eur czk can be disabled from now on

assets/i18n/en/main.ftl

@@ -20,6 +20,7 @@ admin-audio-desc = upload songs, then group them into albums.
 logout = Log out
 settings = Settings
 settings-language = Language
+settings-currency = Currency
 settings-theme = Theme
 language-en = English
 language-sk = Slovak
@@ -475,6 +476,14 @@ bank-amount = Amount
 admin-shipping = Shipping
 admin-shipping-desc = set the price and availability of each delivery option.
 shipping-enabled = Active
+admin-currency = Exchange rate
+admin-currency-desc = set the exchange rate for the currencies customers can switch between. You always enter prices in EUR.
+currency-rate = Rate
+exchange-rate = Exchange rate
+exchange-rate-hint = { $code } prices are the { $base } price recalculated at this rate.
+currency-enabled = Available to customers
+currency-base = Base currency
+currency-base-hint = the currency you enter prices in and settle payment in. Cannot be changed.
 shipping-new = Add delivery option
 shipping-add = Add
 shipping-requires-pickup = Requires pickup point

assets/i18n/sk/main.ftl

@@ -20,6 +20,7 @@ admin-audio-desc = nahrať skladby a potom ich zoskupiť do albumov.
 logout = Odhlásiť sa
 settings = Nastavenia
 settings-language = Jazyk
+settings-currency = Mena
 settings-theme = Téma
 language-en = Angličtina
 language-sk = Slovenčina
@@ -475,6 +476,14 @@ bank-amount = Suma
 admin-shipping = Doprava
 admin-shipping-desc = nastaviť cenu a dostupnosť jednotlivých možností dopravy.
 shipping-enabled = Aktívne
+admin-currency = Kurz
+admin-currency-desc = nastaviť výmenný kurz pre meny, medzi ktorými môžu zákazníci prepínať. Ceny zadávate vždy v EUR.
+currency-rate = Kurz
+exchange-rate = Výmenný kurz
+exchange-rate-hint = ceny v { $code } sa prepočítajú z ceny v { $base } týmto kurzom.
+currency-enabled = Dostupná pre zákazníkov
+currency-base = Základná mena
+currency-base-hint = mena, v ktorej zadávate ceny a prebieha platba. Nedá sa zmeniť.
 shipping-new = Pridať možnosť dopravy
 shipping-add = Pridať
 shipping-requires-pickup = Vyžaduje výdajné miesto

assets/views/account/order_detail.html

@@ -30,18 +30,18 @@
       {% for item in items %}
       <li class="flex justify-between gap-2">
         <span class="text-on-surface/80 dark:text-on-surface-dark/80">{{ item.product_name }}{% if item.variant_label %} · {{ item.variant_label }}{% endif %} × {{ item.quantity }}</span>
-        <span class="tabular-nums">{{ item.line_total }} {{ order.currency }}</span>
+        <span class="tabular-nums">{{ item.line_total }} €</span>
       </li>
       {% endfor %}
     </ul>
     <div class="space-y-1 border-t border-outline py-3 text-sm dark:border-outline-dark">
-      <div class="flex justify-between"><span class="text-on-surface/70 dark:text-on-surface-dark/70">{{ t(key="checkout-subtotal", lang=lang | default(value='sk')) }}</span><span class="tabular-nums">{{ order.subtotal }} {{ order.currency }}</span></div>
-      <div class="flex justify-between"><span class="text-on-surface/70 dark:text-on-surface-dark/70">{{ order.carrier_name }}</span><span class="tabular-nums">{{ order.shipping }} {{ order.currency }}</span></div>
+      <div class="flex justify-between"><span class="text-on-surface/70 dark:text-on-surface-dark/70">{{ t(key="checkout-subtotal", lang=lang | default(value='sk')) }}</span><span class="tabular-nums">{{ order.subtotal }} €</span></div>
+      <div class="flex justify-between"><span class="text-on-surface/70 dark:text-on-surface-dark/70">{{ order.carrier_name }}</span><span class="tabular-nums">{{ order.shipping }} €</span></div>
       {% if order.pickup_point_name %}<div class="text-xs text-on-surface/60 dark:text-on-surface-dark/60">{{ order.pickup_point_name }}</div>{% endif %}
     </div>
     <div class="flex justify-between border-t border-outline pt-3 font-bold dark:border-outline-dark">
       <span>{{ t(key="order-total", lang=lang | default(value='sk')) }}</span>
-      <span class="tabular-nums text-primary dark:text-primary-dark">{{ order.total }} {{ order.currency }}</span>
+      <span class="tabular-nums text-primary dark:text-primary-dark">{{ order.total }} €</span>
     </div>
   </div>
 
@@ -68,7 +68,7 @@
       <span class="text-on-surface/70 dark:text-on-surface-dark/70">{{ t(key="bank-account-name", lang=lang | default(value='sk')) }}</span><span class="font-medium">{{ order.bank_account_name }}</span>
       <span class="text-on-surface/70 dark:text-on-surface-dark/70">IBAN</span><span class="font-mono font-medium">{{ order.bank_iban }}</span>
       <span class="text-on-surface/70 dark:text-on-surface-dark/70">{{ t(key="bank-variable-symbol", lang=lang | default(value='sk')) }}</span><span class="font-mono font-medium">{{ order.variable_symbol }}</span>
-      <span class="text-on-surface/70 dark:text-on-surface-dark/70">{{ t(key="bank-amount", lang=lang | default(value='sk')) }}</span><span class="font-medium tabular-nums">{{ order.total }} {{ order.currency }}</span>
+      <span class="text-on-surface/70 dark:text-on-surface-dark/70">{{ t(key="bank-amount", lang=lang | default(value='sk')) }}</span><span class="font-medium tabular-nums">{{ order.total }} €</span>
     </div>
   </div>
   {% endif %}

assets/views/account/orders.html

@@ -22,7 +22,7 @@
   </div>
   <div class="flex items-center gap-4">
     {{ self::status_badge(status=order.status) }}
-    <span class="tabular-nums text-sm font-medium text-on-surface-strong dark:text-on-surface-dark-strong">{{ order.total }} {{ order.currency }}</span>
+    <span class="tabular-nums text-sm font-medium text-on-surface-strong dark:text-on-surface-dark-strong">{{ order.total }} €</span>
   </div>
 </a>
 {% endmacro order_row %}

assets/views/admin/base.html

@@ -105,6 +105,10 @@
           class="flex items-center gap-2 rounded-radius px-2 py-1.5 text-sm font-medium text-on-surface underline-offset-2 transition hover:bg-primary/5 hover:text-on-surface-strong focus:outline-hidden focus-visible:underline aria-[current=page]:bg-primary/10 aria-[current=page]:text-on-surface-strong dark:text-on-surface-dark dark:hover:bg-primary-dark/5 dark:hover:text-on-surface-dark-strong dark:aria-[current=page]:bg-primary-dark/10 dark:aria-[current=page]:text-on-surface-dark-strong">
           {{ t(key="admin-shipping", lang=lang | default(value='sk')) }}
         </a>
+        <a href="/admin/currencies" data-nav="/admin/currencies"
+          class="flex items-center gap-2 rounded-radius px-2 py-1.5 text-sm font-medium text-on-surface underline-offset-2 transition hover:bg-primary/5 hover:text-on-surface-strong focus:outline-hidden focus-visible:underline aria-[current=page]:bg-primary/10 aria-[current=page]:text-on-surface-strong dark:text-on-surface-dark dark:hover:bg-primary-dark/5 dark:hover:text-on-surface-dark-strong dark:aria-[current=page]:bg-primary-dark/10 dark:aria-[current=page]:text-on-surface-dark-strong">
+          {{ t(key="admin-currency", lang=lang | default(value='sk')) }}
+        </a>
       </div>
 
       <div class="border-t border-outline p-4 dark:border-outline-dark">

assets/views/admin/catalog/discount_form.html

@@ -38,7 +38,7 @@
           x-text="row.label || ('#' + row.id)"></span>
         <span class="text-sm tabular-nums text-on-surface/70 dark:text-on-surface-dark/70">
           {{ t(key="price", lang=lang | default(value='sk')) }}:
-          <span x-text="row.regular_price"></span> <span x-text="row.currency"></span>
+          <span x-text="row.regular_price"></span> €
         </span>
       </div>
 
@@ -80,9 +80,9 @@
         class="flex flex-wrap items-center justify-between gap-3 rounded-radius border border-outline bg-surface-alt px-4 py-2.5 text-sm dark:border-outline-dark dark:bg-surface-dark/40">
         <span class="text-on-surface/70 dark:text-on-surface-dark/70">{{ t(key="discount-preview-after", lang=lang | default(value='sk')) }}</span>
         <span class="flex items-center gap-2">
-          <span class="tabular-nums text-on-surface/50 line-through dark:text-on-surface-dark/50" x-text="money(row.regular_cents) + ' ' + row.currency"></span>
+          <span class="tabular-nums text-on-surface/50 line-through dark:text-on-surface-dark/50" x-text="money(row.regular_cents) + ' €'"></span>
           <span class="text-base font-semibold tabular-nums" :class="valid(row) ? 'text-danger' : 'text-on-surface/40 dark:text-on-surface-dark/40'"
-            x-text="money(afterCents(row)) + ' ' + row.currency"></span>
+            x-text="money(afterCents(row)) + ' €'"></span>
           <span x-show="valid(row)" class="text-xs text-on-surface/60 dark:text-on-surface-dark/60" x-text="'(−' + percentOff(row) + '%)'"></span>
         </span>
       </div>
@@ -106,7 +106,6 @@
         label: r.label || '',
         regular_cents: r.regular_cents,
         regular_price: r.regular_price,
-        currency: r.currency,
         mode: r.mode || 'fixed',
         fixed: r.fixed || '',
         percent: r.percent || '',

assets/views/admin/catalog/product_form.html

@@ -21,9 +21,9 @@
   {{ ui::csrf_field() }}
 
   {% if product %}
-    {% set v_name = product.name %}{% set v_currency = product.currency %}{% set v_desc = product.description | default(value="") %}{% set v_short = product.short_description | default(value="") %}{% set v_pub = product.published %}
+    {% set v_name = product.name %}{% set v_desc = product.description | default(value="") %}{% set v_short = product.short_description | default(value="") %}{% set v_pub = product.published %}
   {% else %}
-    {% set v_name = "" %}{% set v_currency = "EUR" %}{% set v_desc = "" %}{% set v_short = "" %}{% set v_pub = false %}
+    {% set v_name = "" %}{% set v_desc = "" %}{% set v_short = "" %}{% set v_pub = false %}
   {% endif %}
   {% set inp = "w-full rounded-radius border border-outline bg-surface-alt px-3 py-2 text-sm text-on-surface focus-visible:outline-2 focus-visible:outline-offset-2 focus-visible:outline-primary dark:border-outline-dark dark:bg-surface-dark-alt/50 dark:text-on-surface-dark dark:focus-visible:outline-primary-dark" %}
   {% set sublabel = "text-xs font-medium text-on-surface/70 dark:text-on-surface-dark/70" %}
@@ -33,11 +33,6 @@
     {{ ui::input(name="name", id="name", required=true, value=v_name) }}
   </div>
 
-  <div class="space-y-1.5 sm:max-w-[10rem]">
-    <label for="currency" class="text-sm font-medium text-on-surface-strong dark:text-on-surface-dark-strong">{{ t(key="currency", lang=lang | default(value='sk')) }}</label>
-    {{ ui::input(name="currency", id="currency", value=v_currency, attrs='maxlength="3"', extra="uppercase") }}
-  </div>
-
   {# --- Variants / options editor ------------------------------------------- #}
   {# Each product is sold as one or more variants (a free-text label such as     #}
   {# "10cm x 13cm" or "5ml" plus its own price). Price is required. Stock is      #}
@@ -76,7 +71,7 @@
             <input type="number" min="0" :name="`variants[${i}][stock]`" x-model="row.stock" class="{{ inp }}" placeholder="∞" title="{{ t(key='stock-untracked-hint', lang=lang | default(value='sk')) }}">
           </div>
           <div class="space-y-1 sm:col-span-2">
-            <label class="{{ sublabel }} block truncate">{{ t(key="price", lang=lang | default(value='sk')) }}</label>
+            <label class="{{ sublabel }} block truncate">{{ t(key="price", lang=lang | default(value='sk')) }} (€)</label>
             <input :name="`variants[${i}][price]`" x-model="row.price" inputmode="decimal" required class="{{ inp }}" placeholder="0.00">
           </div>
         </div>

assets/views/admin/catalog/products.html

@@ -122,7 +122,7 @@
             </div>
           </div>
         </td>
-        <td class="px-4 py-3 tabular-nums">{% if product.has_options %}{{ t(key="from-price", price=product.regular_price, lang=lang | default(value='sk')) }}{% else %}{{ product.regular_price }}{% endif %} {{ product.currency }}</td>
+        <td class="px-4 py-3 tabular-nums">{% if product.has_options %}{{ t(key="from-price", price=product.regular_price, lang=lang | default(value='sk')) }}{% else %}{{ product.regular_price }}{% endif %} €</td>
         <td class="px-4 py-3 tabular-nums">{{ product.variant_count }}</td>
         <td class="px-4 py-3 tabular-nums">
           <span id="eff-{{ product.id }}">{{ ui::eff_price(p=product) }}</span>

assets/views/admin/currencies/index.html

@@ -0,0 +1,44 @@
+{% extends "admin/base.html" %}
+{% import "macros/ui.html" as ui %}
+
+{% block title %}{{ t(key="admin-currency", lang=lang | default(value='sk')) }}{% endblock title %}
+{% block crumb %}{{ t(key="admin-currency", lang=lang | default(value='sk')) }}{% endblock crumb %}
+
+{% block content %}
+<header class="space-y-1">
+  <h1 class="text-2xl font-bold text-on-surface-strong dark:text-on-surface-dark-strong">{{ t(key="admin-currency", lang=lang | default(value='sk')) }}</h1>
+  <p class="text-sm text-on-surface/70 dark:text-on-surface-dark/70">{{ t(key="admin-currency-desc", lang=lang | default(value='sk')) }}</p>
+</header>
+
+<div class="mt-6 space-y-4">
+  <!-- base currency, read-only for context -->
+  <div class="flex flex-wrap items-center gap-4 rounded-radius border border-outline bg-surface-alt/40 p-5 dark:border-outline-dark dark:bg-surface-dark-alt/30">
+    <div class="min-w-40">
+      <p class="font-semibold text-on-surface-strong dark:text-on-surface-dark-strong">{{ base_code }} ({{ base_symbol }})</p>
+      <p class="text-xs text-on-surface/60 dark:text-on-surface-dark/60">{{ t(key="currency-base-hint", lang=lang | default(value='sk')) }}</p>
+    </div>
+    {{ ui::badge(label=t(key="currency-base", lang=lang | default(value='sk')), variant="neutral") }}
+  </div>
+
+  {% for c in currencies %}
+  <form method="post" action="/admin/currencies/{{ c.id }}"
+    class="flex flex-wrap items-end gap-4 rounded-radius border border-outline bg-surface p-5 dark:border-outline-dark dark:bg-surface-dark-alt">
+  {{ ui::csrf_field() }}
+    <div class="min-w-40">
+      <p class="font-semibold text-on-surface-strong dark:text-on-surface-dark-strong">{{ c.code }} ({{ c.symbol }})</p>
+      <p class="text-xs text-on-surface/60 dark:text-on-surface-dark/60">{{ t(key="exchange-rate-hint", code=c.code, base=base_code, lang=lang | default(value='sk')) }}</p>
+    </div>
+    <div class="space-y-1.5">
+      <label for="rate-{{ c.id }}" class="text-sm font-medium text-on-surface-strong dark:text-on-surface-dark-strong">{{ t(key="exchange-rate", lang=lang | default(value='sk')) }}</label>
+      <span class="flex items-center gap-2">
+        <span class="text-sm text-on-surface/60 dark:text-on-surface-dark/60">1 {{ base_code }} =</span>
+        {{ ui::input(name="rate", id="rate-" ~ c.id, value=c.rate, width="w-28", attrs='inputmode="decimal"') }}
+        <span class="text-sm text-on-surface/60 dark:text-on-surface-dark/60">{{ c.code }}</span>
+      </span>
+    </div>
+    <div class="pb-2">{{ ui::checkbox(name="enabled", label=t(key="currency-enabled", lang=lang | default(value='sk')), checked=c.enabled) }}</div>
+    {{ ui::button(label=t(key="save", lang=lang | default(value='sk')), type="submit", extra="ml-auto") }}
+  </form>
+  {% endfor %}
+</div>
+{% endblock content %}

assets/views/admin/customers/price_form.html

@@ -38,15 +38,15 @@
   <div class="space-y-2 rounded-radius bg-surface-alt px-4 py-3 dark:bg-surface-dark/40">
     <div class="flex items-center justify-between gap-3 text-sm">
       <span class="text-on-surface/70 dark:text-on-surface-dark/70">{{ t(key="price", lang=lang | default(value='sk')) }}</span>
-      <span class="tabular-nums text-on-surface-strong dark:text-on-surface-dark-strong">{{ product.regular_price }} {{ product.currency }}</span>
+      <span class="tabular-nums text-on-surface-strong dark:text-on-surface-dark-strong">{{ product.regular_price }} €</span>
     </div>
     <div class="flex items-center justify-between gap-3 text-sm">
       <span class="text-on-surface/70 dark:text-on-surface-dark/70">{{ t(key="business-price", lang=lang | default(value='sk')) }}</span>
-      <span class="tabular-nums {% if product.business_reduced %}font-medium text-danger{% else %}text-on-surface-strong dark:text-on-surface-dark-strong{% endif %}">{{ product.business_price }} {{ product.currency }}</span>
+      <span class="tabular-nums {% if product.business_reduced %}font-medium text-danger{% else %}text-on-surface-strong dark:text-on-surface-dark-strong{% endif %}">{{ product.business_price }} €</span>
     </div>
     <div class="flex items-center justify-between gap-3 text-sm">
       <span class="text-on-surface/70 dark:text-on-surface-dark/70">{{ t(key="effective-price", lang=lang | default(value='sk')) }}</span>
-      <span class="tabular-nums font-medium {% if product.effective_differs %}text-primary dark:text-primary-dark{% else %}text-on-surface-strong dark:text-on-surface-dark-strong{% endif %}">{{ product.effective_price }} {{ product.currency }}</span>
+      <span class="tabular-nums font-medium {% if product.effective_differs %}text-primary dark:text-primary-dark{% else %}text-on-surface-strong dark:text-on-surface-dark-strong{% endif %}">{{ product.effective_price }} €</span>
     </div>
   </div>
 
@@ -62,7 +62,7 @@
     <div class="flex items-center justify-between gap-3">
       <span class="text-sm text-on-surface/70 dark:text-on-surface-dark/70">{{ t(key="negotiated-price", lang=lang | default(value='sk')) }}</span>
       <span class="text-lg font-semibold tabular-nums" :class="valid ? 'text-secondary dark:text-secondary-dark' : 'text-on-surface/40 dark:text-on-surface-dark/40'">
-        <span x-text="money(afterCents)"></span> {{ product.currency }}
+        <span x-text="money(afterCents)"></span> €
       </span>
     </div>
     <p x-show="!valid" class="text-xs text-danger">{{ t(key="discount-must-be-positive", lang=lang | default(value='sk')) }}</p>

assets/views/admin/customers/show.html

@@ -82,14 +82,14 @@
         </td>
         <td class="px-4 py-3 tabular-nums">
           {% if product.business_reduced %}
-          <span class="font-medium text-danger">{{ product.business_price }} {{ product.currency }}</span>
+          <span class="font-medium text-danger">{{ product.business_price }} €</span>
           <span class="ml-1 text-xs text-on-surface/50 line-through dark:text-on-surface-dark/50">{{ product.regular_price }}</span>
           {% else %}
-          {{ product.business_price }} {{ product.currency }}
+          {{ product.business_price }} €
           {% endif %}
         </td>
         <td class="px-4 py-3 tabular-nums">
-          <span class="font-medium {% if product.effective_differs %}text-primary dark:text-primary-dark{% else %}text-on-surface-strong dark:text-on-surface-dark-strong{% endif %}">{{ product.effective_price }} {{ product.currency }}</span>
+          <span class="font-medium {% if product.effective_differs %}text-primary dark:text-primary-dark{% else %}text-on-surface-strong dark:text-on-surface-dark-strong{% endif %}">{{ product.effective_price }} €</span>
           {% if product.collision %}<span class="ml-1">{{ ui::badge(label=t(key="collision", lang=lang | default(value='sk')), variant="warning") }}</span>{% endif %}
         </td>
         <td class="px-4 py-3">

assets/views/admin/orders/index.html

@@ -44,7 +44,7 @@
         <td class="px-4 py-3">
           {{ ui::badge(label=t(key="order-status-" ~ order.status, lang=lang | default(value='sk')), variant="neutral") }}
         </td>
-        <td class="px-4 py-3 text-right tabular-nums">{{ order.total }} {{ order.currency }}</td>
+        <td class="px-4 py-3 text-right tabular-nums">{{ order.total }} €</td>
         <td class="px-4 py-3 text-right">
           {{ ui::button(variant="outline-secondary", label=t(key="view", lang=lang | default(value='sk')), href="/admin/orders/" ~ order.id, size="px-3 py-1.5 text-xs") }}
         </td>

assets/views/admin/orders/show.html

@@ -38,14 +38,14 @@
           <tr>
             <td class="px-4 py-3">{{ item.product_name }}{% if item.variant_label %} <span class="text-on-surface/60 dark:text-on-surface-dark/60">· {{ item.variant_label }}</span>{% endif %}</td>
             <td class="px-4 py-3 tabular-nums">{{ item.quantity }}</td>
-            <td class="px-4 py-3 text-right tabular-nums">{{ item.line_total }} {{ order.currency }}</td>
+            <td class="px-4 py-3 text-right tabular-nums">{{ item.line_total }} €</td>
           </tr>
           {% endfor %}
         </tbody>
         <tfoot class="{{ ui::tfoot_cls() }}">
           <tr>
             <td colspan="2" class="px-4 py-3 text-right font-semibold">{{ t(key="order-total", lang=lang | default(value='sk')) }}</td>
-            <td class="px-4 py-3 text-right font-bold tabular-nums text-primary dark:text-primary-dark">{{ order.total }} {{ order.currency }}</td>
+            <td class="px-4 py-3 text-right font-bold tabular-nums text-primary dark:text-primary-dark">{{ order.total }} €</td>
           </tr>
         </tfoot>
       </table>
@@ -75,7 +75,7 @@
       </div>
       <div>
         <p class="text-xs uppercase tracking-wide text-on-surface/60 dark:text-on-surface-dark/60">{{ t(key="checkout-carrier", lang=lang | default(value='sk')) }}</p>
-        <p class="text-on-surface/80 dark:text-on-surface-dark/80">{{ order.carrier_name }} — {{ order.shipping }} {{ order.currency }}</p>
+        <p class="text-on-surface/80 dark:text-on-surface-dark/80">{{ order.carrier_name }} — {{ order.shipping }} €</p>
         {% if order.pickup_point_name %}<p class="text-on-surface/80 dark:text-on-surface-dark/80">{{ order.pickup_point_name }}</p>{% endif %}
       </div>
       <div>

assets/views/base.html

@@ -104,8 +104,19 @@
           {% endif %}
         </ul>
 
-        <!-- right side: cart + settings + mobile toggle -->
+        <!-- right side: kurz + cart + settings + mobile toggle -->
         <div class="ml-auto flex items-center gap-3">
+          <!-- exchange-rate ("kurz") display: the admin-set EUR→alt rate(s).
+               Hidden when the store is EUR-only (no enabled alternatives). -->
+          {% set nav_cc = currencies() %}
+          {% if nav_cc.alts | length > 0 %}
+          <div class="hidden items-center gap-2 text-xs text-on-surface/70 dark:text-on-surface-dark/70 sm:flex">
+            <span class="font-semibold uppercase tracking-wide">{{ t(key="currency-rate", lang=lang | default(value='sk')) }}</span>
+            {% for a in nav_cc.alts %}
+            <span class="tabular-nums">1 {{ nav_cc.base.symbol }} = {{ a.rate }} {{ a.symbol }}</span>
+            {% endfor %}
+          </div>
+          {% endif %}
           <!-- customer profile dropdown (avatar + name + account type) -->
           {% if logged_in_customer %}
           {% include "partials/profile_menu.html" %}

assets/views/macros/ui.html

@@ -132,10 +132,10 @@
 {% macro eff_price(p, preview=false) -%}
 {%- if preview -%}{% set strong = "text-info" %}{%- else -%}{% set strong = "text-primary dark:text-primary-dark" %}{%- endif -%}
 {% if p.effective_reduced %}
-<span class="font-medium {{ strong }}">{{ p.effective_price }} {{ p.currency }}</span>
+<span class="font-medium {{ strong }}">{{ p.effective_price }} €</span>
 <span class="ml-1 text-xs text-on-surface/60 dark:text-on-surface-dark/60">(−{{ p.effective_percent_off }}%)</span>
 {% else %}
-{{ p.effective_price }} {{ p.currency }}
+{{ p.effective_price }} €
 {% endif %}
 {%- endmacro eff_price %}
 

assets/views/partials/settings_dropdown.html

@@ -35,6 +35,32 @@
       {% if lang | default(value='sk') == "sk" %}<span class="text-primary dark:text-primary-dark">✓</span>{% endif %}
     </button>
   </form>
+  {# Currency switcher. Only enabled (buyer-available) currencies are listed,
+     from the `currencies()` snapshot; the whole section is hidden when the store
+     is EUR-only (no enabled alternatives). The active code is read from the
+     `currency` cookie client-side (Alpine); posting to /currency sets it. #}
+  {% set cc = currencies() %}
+  {% if cc.alts | length > 0 %}
+  <p class="mt-1 px-4 py-1.5 text-xs font-semibold uppercase tracking-wide text-on-surface/60 dark:text-on-surface-dark/60">
+    {{ t(key="settings-currency", lang=lang | default(value='sk')) }}
+  </p>
+  <form method="post" action="/currency" hx-boost="false"
+    x-data="{ cur: ((document.cookie.split('; ').find(function (c) { return c.indexOf('currency=') === 0 }) || 'currency={{ cc.base.code }}').split('=')[1]) }">
+  <input type="hidden" name="_csrf" value="{{ csrf_token() }}">
+    <button type="submit" name="currency" value="{{ cc.base.code }}" role="menuitem"
+      class="flex w-full items-center justify-between px-4 py-2 text-sm text-on-surface transition hover:bg-primary/5 hover:text-on-surface-strong focus-visible:bg-primary/10 focus-visible:text-on-surface-strong focus-visible:outline-hidden dark:text-on-surface-dark dark:hover:bg-primary-dark/5 dark:hover:text-on-surface-dark-strong">
+      <span>{{ cc.base.code }} ({{ cc.base.symbol }})</span>
+      <span x-cloak x-show="cur === '{{ cc.base.code }}'" class="text-primary dark:text-primary-dark">✓</span>
+    </button>
+    {% for a in cc.alts %}
+    <button type="submit" name="currency" value="{{ a.code }}" role="menuitem"
+      class="flex w-full items-center justify-between px-4 py-2 text-sm text-on-surface transition hover:bg-primary/5 hover:text-on-surface-strong focus-visible:bg-primary/10 focus-visible:text-on-surface-strong focus-visible:outline-hidden dark:text-on-surface-dark dark:hover:bg-primary-dark/5 dark:hover:text-on-surface-dark-strong">
+      <span>{{ a.code }} ({{ a.symbol }})</span>
+      <span x-cloak x-show="cur === '{{ a.code }}'" class="text-primary dark:text-primary-dark">✓</span>
+    </button>
+    {% endfor %}
+  </form>
+  {% endif %}
   <p class="mt-1 px-4 py-1.5 text-xs font-semibold uppercase tracking-wide text-on-surface/60 dark:text-on-surface-dark/60">
     {{ t(key="settings-theme", lang=lang | default(value='sk')) }}
   </p>

assets/views/shop/_card.html

@@ -38,11 +38,11 @@
       {% endif %}
       {% if product.on_sale %}
       <div class="flex flex-wrap items-baseline gap-x-2 leading-tight">
-        <span class="text-xl font-semibold text-danger"><span class="sr-only">Price</span>{% if product.has_options %}{{ t(key="from-price", price=product.price, lang=lang | default(value='sk')) }}{% else %}{{ product.price }}{% endif %} {{ product.currency }}</span>
-        <span class="text-sm text-on-surface/50 line-through dark:text-on-surface-dark/50">{{ product.regular_price }} {{ product.currency }}</span>
+        <span class="text-xl font-semibold text-danger"><span class="sr-only">Price</span>{% if product.has_options %}{{ t(key="from-price", price=product.price, lang=lang | default(value='sk')) }}{% else %}{{ product.price }}{% endif %} {{ currency_symbol }}</span>
+        <span class="text-sm text-on-surface/50 line-through dark:text-on-surface-dark/50">{{ product.regular_price }} {{ currency_symbol }}</span>
       </div>
       {% else %}
-      <span class="break-words text-xl"><span class="sr-only">Price</span>{% if product.has_options %}{{ t(key="from-price", price=product.price, lang=lang | default(value='sk')) }}{% else %}{{ product.price }}{% endif %} {{ product.currency }}</span>
+      <span class="break-words text-xl"><span class="sr-only">Price</span>{% if product.has_options %}{{ t(key="from-price", price=product.price, lang=lang | default(value='sk')) }}{% else %}{{ product.price }}{% endif %} {{ currency_symbol }}</span>
       {% endif %}
     </div>
   </a>

assets/views/shop/_cart_body.html

@@ -23,10 +23,10 @@
         </td>
         <td class="px-4 py-3 tabular-nums">
           {% if item.on_sale %}
-          <span class="font-medium text-danger">{{ item.price }} {{ item.currency }}</span>
+          <span class="font-medium text-danger">{{ item.price }} {{ currency_symbol }}</span>
           <span class="ml-1 text-xs text-on-surface/50 line-through dark:text-on-surface-dark/50">{{ item.regular_price }}</span>
           {% else %}
-          {{ item.price }} {{ item.currency }}
+          {{ item.price }} {{ currency_symbol }}
           {% endif %}
         </td>
         <td class="px-4 py-3">
@@ -48,7 +48,7 @@
               class="w-20 rounded-radius border border-outline bg-surface-alt px-2 py-1 text-sm text-on-surface focus-visible:outline-2 focus-visible:outline-offset-2 focus-visible:outline-primary disabled:cursor-not-allowed disabled:opacity-75 dark:border-outline-dark dark:bg-surface-dark-alt/50 dark:text-on-surface-dark dark:focus-visible:outline-primary-dark">
           </form>
         </td>
-        <td class="px-4 py-3 text-right font-medium tabular-nums">{{ item.line_total }} {{ item.currency }}</td>
+        <td class="px-4 py-3 text-right font-medium tabular-nums">{{ item.line_total }} {{ currency_symbol }}</td>
         <td class="px-4 py-3 text-right">
           <form method="post" action="/cart/remove"
             hx-post="/cart/remove" hx-target="#cart-body" hx-swap="innerHTML">
@@ -63,7 +63,7 @@
     <tfoot class="{{ ui::tfoot_cls() }}">
       <tr>
         <td colspan="3" class="px-4 py-3 text-right font-semibold text-on-surface-strong dark:text-on-surface-dark-strong">{{ t(key="cart-total", lang=lang | default(value='sk')) }}</td>
-        <td class="px-4 py-3 text-right text-lg font-bold tabular-nums text-primary dark:text-primary-dark">{{ total }} {{ currency }}</td>
+        <td class="px-4 py-3 text-right text-lg font-bold tabular-nums text-primary dark:text-primary-dark">{{ total }} {{ currency_symbol }}</td>
         <td></td>
       </tr>
     </tfoot>

assets/views/shop/_cart_preview.html

@@ -1,6 +1,6 @@
 {# Mini-cart preview shown on hover over the navbar cart (Alza-style).
    Lazy-loaded via htmx from /partials/cart into the hover dropdown panel in
-   base.html. Receives: items[], total, currency, lang. #}
+   base.html. Receives: items[], total, lang. #}
 {% import "macros/ui.html" as ui %}
 {% if items | length > 0 %}
 <div class="max-h-80 divide-y divide-outline overflow-y-auto dark:divide-outline-dark">
@@ -9,16 +9,16 @@
     <div class="min-w-0 flex-1">
       <a href="/shop/{{ item.slug }}" class="block truncate text-sm font-medium text-on-surface-strong hover:text-primary dark:text-on-surface-dark-strong dark:hover:text-primary-dark">{{ item.name }}</a>
       {% if item.variant_label %}<span class="block truncate text-xs text-on-surface/60 dark:text-on-surface-dark/60">{{ item.variant_label }}</span>{% endif %}
-      <p class="mt-0.5 text-xs tabular-nums text-on-surface dark:text-on-surface-dark">{{ item.quantity }} × {{ item.price }} {{ item.currency }}</p>
+      <p class="mt-0.5 text-xs tabular-nums text-on-surface dark:text-on-surface-dark">{{ item.quantity }} × {{ item.price }} {{ currency_symbol }}</p>
     </div>
-    <span class="shrink-0 text-sm font-semibold tabular-nums text-on-surface-strong dark:text-on-surface-dark-strong">{{ item.line_total }} {{ item.currency }}</span>
+    <span class="shrink-0 text-sm font-semibold tabular-nums text-on-surface-strong dark:text-on-surface-dark-strong">{{ item.line_total }} {{ currency_symbol }}</span>
   </div>
   {% endfor %}
 </div>
 <div class="border-t border-outline px-4 py-3 dark:border-outline-dark">
   <div class="mb-3 flex items-center justify-between">
     <span class="text-sm text-on-surface dark:text-on-surface-dark">{{ t(key="cart-total", lang=lang | default(value='sk')) }}</span>
-    <span class="text-base font-bold tabular-nums text-primary dark:text-primary-dark">{{ total }} {{ currency }}</span>
+    <span class="text-base font-bold tabular-nums text-primary dark:text-primary-dark">{{ total }} {{ currency_symbol }}</span>
   </div>
   <div class="flex gap-2">
     {{ ui::button(href="/cart", variant="outline-primary", label=t(key="cart-title", lang=lang | default(value='sk')), extra="flex-1", attrs='hx-boost="false"') }}

assets/views/shop/_search.html

@@ -65,7 +65,7 @@
 
       <!-- price band -->
       <label class="flex flex-col gap-1 text-xs font-medium text-on-surface/70 dark:text-on-surface-dark/70">
-        {{ t(key="filter-price", lang=L) }}
+        {{ t(key="filter-price", lang=L) }}{% if currency_symbol %} ({{ currency_symbol }}){% endif %}
         <span class="flex items-center gap-1">
           <input type="number" name="min_price" min="0" step="0.01" inputmode="decimal"
             value="{{ min_price | default(value='') }}" placeholder="{{ price_floor }}"

assets/views/shop/checkout.html

@@ -188,7 +188,7 @@
             class="before:content[''] relative h-4 w-4 appearance-none rounded-full border border-outline bg-surface before:invisible before:absolute before:left-1/2 before:top-1/2 before:h-1.5 before:w-1.5 before:-translate-x-1/2 before:-translate-y-1/2 before:rounded-full before:bg-on-primary checked:border-primary checked:bg-primary checked:before:visible focus:outline-2 focus:outline-offset-2 focus:outline-outline-strong checked:focus:outline-primary disabled:cursor-not-allowed dark:border-outline-dark dark:bg-surface-dark dark:before:bg-on-primary-dark dark:checked:border-primary-dark dark:checked:bg-primary-dark dark:focus:outline-outline-dark-strong dark:checked:focus:outline-primary-dark">
           <span class="font-medium text-on-surface-strong dark:text-on-surface-dark-strong">{{ m.name }}</span>
         </span>
-        <span class="tabular-nums text-on-surface/80 dark:text-on-surface-dark/80">{{ m.price }} {{ currency }}</span>
+        <span class="tabular-nums text-on-surface/80 dark:text-on-surface-dark/80">{{ m.price }} €</span>
       </label>
       {% endfor %}
 
@@ -252,23 +252,23 @@
       {% for item in items %}
       <li class="flex justify-between gap-2">
         <span class="text-on-surface/80 dark:text-on-surface-dark/80">{{ item.name }} × {{ item.quantity }}</span>
-        <span class="tabular-nums">{{ item.line_total }} {{ item.currency }}</span>
+        <span class="tabular-nums">{{ item.line_total }} €</span>
       </li>
       {% endfor %}
     </ul>
     <div class="space-y-1 border-t border-outline pt-3 text-sm dark:border-outline-dark">
       <div class="flex justify-between">
         <span class="text-on-surface/70 dark:text-on-surface-dark/70">{{ t(key="checkout-subtotal", lang=lang | default(value='sk')) }}</span>
-        <span class="tabular-nums">{{ subtotal }} {{ currency }}</span>
+        <span class="tabular-nums">{{ subtotal }} €</span>
       </div>
       <div class="flex justify-between">
         <span class="text-on-surface/70 dark:text-on-surface-dark/70">{{ t(key="checkout-shipping-cost", lang=lang | default(value='sk')) }}</span>
-        <span class="tabular-nums" x-text="fmt(carrierPrice) + ' {{ currency }}'"></span>
+        <span class="tabular-nums" x-text="fmt(carrierPrice) + ' €'"></span>
       </div>
     </div>
     <div class="flex justify-between border-t border-outline pt-3 text-base font-bold dark:border-outline-dark">
       <span>{{ t(key="cart-total", lang=lang | default(value='sk')) }}</span>
-      <span class="tabular-nums text-primary dark:text-primary-dark" x-text="fmt(subtotal + carrierPrice) + ' {{ currency }}'"></span>
+      <span class="tabular-nums text-primary dark:text-primary-dark" x-text="fmt(subtotal + carrierPrice) + ' €'"></span>
     </div>
     {{ ui::button(label=t(key="checkout-place-order", lang=lang | default(value='sk')), type="submit", attrs=':disabled="!canSubmit"', extra="w-full", size="px-6 py-2.5 text-sm") }}
   </aside>

assets/views/shop/order_confirmed.html

@@ -30,18 +30,18 @@
       {% for item in items %}
       <li class="flex justify-between gap-2">
         <span class="text-on-surface/80 dark:text-on-surface-dark/80">{{ item.product_name }}{% if item.variant_label %} · {{ item.variant_label }}{% endif %} × {{ item.quantity }}</span>
-        <span class="tabular-nums">{{ item.line_total }} {{ order.currency }}</span>
+        <span class="tabular-nums">{{ item.line_total }} €</span>
       </li>
       {% endfor %}
     </ul>
     <div class="space-y-1 border-t border-outline py-3 text-sm dark:border-outline-dark">
-      <div class="flex justify-between"><span class="text-on-surface/70 dark:text-on-surface-dark/70">{{ t(key="checkout-subtotal", lang=lang | default(value='sk')) }}</span><span class="tabular-nums">{{ order.subtotal }} {{ order.currency }}</span></div>
-      <div class="flex justify-between"><span class="text-on-surface/70 dark:text-on-surface-dark/70">{{ order.carrier_name }}</span><span class="tabular-nums">{{ order.shipping }} {{ order.currency }}</span></div>
+      <div class="flex justify-between"><span class="text-on-surface/70 dark:text-on-surface-dark/70">{{ t(key="checkout-subtotal", lang=lang | default(value='sk')) }}</span><span class="tabular-nums">{{ order.subtotal }} €</span></div>
+      <div class="flex justify-between"><span class="text-on-surface/70 dark:text-on-surface-dark/70">{{ order.carrier_name }}</span><span class="tabular-nums">{{ order.shipping }} €</span></div>
       {% if order.pickup_point_name %}<div class="text-xs text-on-surface/60 dark:text-on-surface-dark/60">{{ order.pickup_point_name }}</div>{% endif %}
     </div>
     <div class="flex justify-between border-t border-outline pt-3 font-bold dark:border-outline-dark">
       <span>{{ t(key="order-total", lang=lang | default(value='sk')) }}</span>
-      <span class="tabular-nums text-primary dark:text-primary-dark">{{ order.total }} {{ order.currency }}</span>
+      <span class="tabular-nums text-primary dark:text-primary-dark">{{ order.total }} €</span>
     </div>
   </div>
 
@@ -52,7 +52,7 @@
       <span class="text-on-surface/70 dark:text-on-surface-dark/70">{{ t(key="bank-account-name", lang=lang | default(value='sk')) }}</span><span class="font-medium">{{ order.bank_account_name }}</span>
       <span class="text-on-surface/70 dark:text-on-surface-dark/70">IBAN</span><span class="font-mono font-medium">{{ order.bank_iban }}</span>
       <span class="text-on-surface/70 dark:text-on-surface-dark/70">{{ t(key="bank-variable-symbol", lang=lang | default(value='sk')) }}</span><span class="font-mono font-medium">{{ order.variable_symbol }}</span>
-      <span class="text-on-surface/70 dark:text-on-surface-dark/70">{{ t(key="bank-amount", lang=lang | default(value='sk')) }}</span><span class="font-medium tabular-nums">{{ order.total }} {{ order.currency }}</span>
+      <span class="text-on-surface/70 dark:text-on-surface-dark/70">{{ t(key="bank-amount", lang=lang | default(value='sk')) }}</span><span class="font-medium tabular-nums">{{ order.total }} €</span>
     </div>
   </div>
   {% else %}

assets/views/shop/show.html

@@ -67,7 +67,7 @@
             <label for="variant-select" class="text-sm font-medium text-on-surface-strong dark:text-on-surface-dark-strong">{{ t(key="choose-option", lang=lang | default(value='sk')) }}</label>
             <select id="variant-select" x-model.number="sel" class="{{ fld }}">
               <template x-for="(v, i) in variants" :key="v.id">
-                <option :value="i" x-text="(v.label || '—') + ' · ' + v.price + ' {{ product.currency }}' + (v.in_stock ? '' : ' ({{ t(key='out-of-stock', lang=lang | default(value='sk')) }})')"></option>
+                <option :value="i" x-text="(v.label || '—') + ' · ' + v.price + ' {{ currency_symbol }}' + (v.in_stock ? '' : ' ({{ t(key='out-of-stock', lang=lang | default(value='sk')) }})')"></option>
               </template>
             </select>
           </div>
@@ -75,10 +75,10 @@
 
         <div class="flex items-baseline gap-3">
           <p class="text-2xl font-semibold" :class="current.on_sale ? 'text-danger' : 'text-primary dark:text-primary-dark'">
-            <span x-text="current.price"></span> {{ product.currency }}
+            <span x-text="current.price"></span> {{ currency_symbol }}
           </p>
           <template x-if="current.on_sale">
-            <p class="text-lg text-on-surface/50 line-through dark:text-on-surface-dark/50"><span x-text="current.regular_price"></span> {{ product.currency }}</p>
+            <p class="text-lg text-on-surface/50 line-through dark:text-on-surface-dark/50"><span x-text="current.regular_price"></span> {{ currency_symbol }}</p>
           </template>
         </div>
 

migration/src/lib.rs

@@ -47,6 +47,8 @@ mod m20260622_000005_product_search_aggregate;
 mod m20260622_000006_order_search_indexes;
 mod m20260623_000001_add_short_description_to_products;
 mod m20260623_000002_strip_html_from_product_search;
+mod m20260623_000003_drop_currency;
+mod m20260623_000004_currencies;
 pub struct Migrator;
 
 #[async_trait::async_trait]
@@ -98,6 +100,8 @@ impl MigratorTrait for Migrator {
             Box::new(m20260622_000006_order_search_indexes::Migration),
             Box::new(m20260623_000001_add_short_description_to_products::Migration),
             Box::new(m20260623_000002_strip_html_from_product_search::Migration),
+            Box::new(m20260623_000003_drop_currency::Migration),
+            Box::new(m20260623_000004_currencies::Migration),
             // inject-above (do not remove this comment)
         ]
     }

migration/src/m20260623_000003_drop_currency.rs

@@ -0,0 +1,20 @@
+use loco_rs::schema::*;
+use sea_orm_migration::prelude::*;
+
+#[derive(DeriveMigrationName)]
+pub struct Migration;
+
+#[async_trait::async_trait]
+impl MigrationTrait for Migration {
+    async fn up(&self, m: &SchemaManager) -> Result<(), DbErr> {
+        // The store is EUR-only. Currency is no longer stored per product/order;
+        // the euro symbol is rendered everywhere in the UI.
+        remove_column(m, "products", "currency").await?;
+        remove_column(m, "orders", "currency").await
+    }
+
+    async fn down(&self, m: &SchemaManager) -> Result<(), DbErr> {
+        add_column(m, "products", "currency", ColType::StringWithDefault("EUR".to_string())).await?;
+        add_column(m, "orders", "currency", ColType::StringWithDefault("EUR".to_string())).await
+    }
+}

migration/src/m20260623_000004_currencies.rs

@@ -0,0 +1,31 @@
+use loco_rs::schema::*;
+use sea_orm_migration::prelude::*;
+
+#[derive(DeriveMigrationName)]
+pub struct Migration;
+
+#[async_trait::async_trait]
+impl MigrationTrait for Migration {
+    async fn up(&self, m: &SchemaManager) -> Result<(), DbErr> {
+        // Buyer-selectable display currencies. EUR is the base/transaction
+        // currency and is NOT stored here; each row is an alternative the buyer
+        // can switch to, whose prices are the EUR price recalculated at
+        // `rate_e4` (units of this currency per 1 EUR, scaled ×10000). For now
+        // the only row is CZK, seeded by `initializers::currency_seeder`.
+        create_table(m, "currencies",
+            &[
+            ("id", ColType::PkAuto),
+            ("code", ColType::StringUniq),
+            ("symbol", ColType::String),
+            ("rate_e4", ColType::BigIntegerWithDefault(10_000)),
+            ("enabled", ColType::BooleanWithDefault(true)),
+            ],
+            &[
+            ]
+        ).await
+    }
+
+    async fn down(&self, m: &SchemaManager) -> Result<(), DbErr> {
+        drop_table(m, "currencies").await
+    }
+}

src/app.rs

@@ -17,9 +17,9 @@ use std::{path::Path, sync::Arc};
 #[allow(unused_imports)]
 use crate::{
     controllers::{
-        account, admin_categories, admin_customers, admin_dashboard, admin_discount_profiles,
-        admin_form, admin_orders, admin_products, admin_shipping, auth, auth_pages,
-        cart, checkout, home, i18n, media, oauth2,
+        account, admin_categories, admin_currencies, admin_customers, admin_dashboard,
+        admin_discount_profiles, admin_form, admin_orders, admin_products, admin_shipping,
+        auth, auth_pages, cart, checkout, currency, home, i18n, media, oauth2,
         shop,
     },
     initializers,
@@ -83,6 +83,7 @@ impl Hooks for App {
             Box::new(initializers::view_engine::ViewEngineInitializer),
             Box::new(initializers::admin_seeder::AdminSeeder),
             Box::new(initializers::shipping_seeder::ShippingSeeder),
+            Box::new(initializers::currency_seeder::CurrencySeeder),
             Box::new(initializers::oauth2::OAuth2StoreInitializer),
             Box::new(initializers::oauth2_session::OAuth2SessionInitializer),
         ])
@@ -95,6 +96,7 @@ impl Hooks for App {
             .add_route(shop::routes())
             .add_route(cart::routes())
             .add_route(checkout::routes())
+            .add_route(currency::routes())
             // cross-cutting
             .add_route(auth::routes())
             .add_route(auth_pages::routes())
@@ -110,6 +112,7 @@ impl Hooks for App {
             .add_route(admin_orders::routes())
             .add_route(admin_customers::routes())
             .add_route(admin_shipping::routes())
+            .add_route(admin_currencies::routes())
     }
 
     async fn after_context(ctx: AppContext) -> Result<AppContext> {

src/controllers/admin_currencies.rs

@@ -0,0 +1,94 @@
+//! Admin management of the alternative display currencies.
+//!
+//! EUR is the base/transaction currency and is shown read-only for context. The
+//! admin sets each alternative currency's exchange rate (units per 1 EUR) and
+//! toggles whether buyers may switch to it. The currencies themselves are fixed
+//! and seeded by `initializers::currency_seeder`.
+
+use axum_extra::extract::cookie::CookieJar;
+use loco_rs::prelude::*;
+use sea_orm::{ActiveModelTrait, EntityTrait, QueryOrder, Set};
+use serde::Deserialize;
+use serde_json::json;
+
+use crate::{
+    controllers::i18n::current_lang,
+    models::currencies,
+    shared::{
+        currency::{self, BASE_CODE, BASE_SYMBOL},
+        guard,
+    },
+};
+
+#[derive(Debug, Deserialize)]
+struct CurrencyForm {
+    rate: String,
+    enabled: Option<String>,
+}
+
+fn is_checked(value: &Option<String>) -> bool {
+    matches!(value.as_deref(), Some("on" | "true" | "1"))
+}
+
+#[debug_handler]
+async fn index(
+    auth: auth::JWT,
+    jar: CookieJar,
+    ViewEngine(v): ViewEngine<TeraView>,
+    State(ctx): State<AppContext>,
+) -> Result<Response> {
+    guard::current_admin(auth, &ctx).await?;
+    let rows = currencies::Entity::find()
+        .order_by_asc(currencies::Column::Code)
+        .all(&ctx.db)
+        .await?;
+    let currencies_json: Vec<serde_json::Value> = rows
+        .iter()
+        .map(|c| {
+            json!({
+                "id": c.id,
+                "code": c.code,
+                "symbol": c.symbol,
+                "rate": currency::format_rate(c.rate_e4),
+                "enabled": c.enabled,
+            })
+        })
+        .collect();
+    format::view(
+        &v,
+        "admin/currencies/index.html",
+        json!({
+            "base_code": BASE_CODE,
+            "base_symbol": BASE_SYMBOL,
+            "currencies": currencies_json,
+            "lang": current_lang(&jar),
+        }),
+    )
+}
+
+#[debug_handler]
+async fn update(
+    auth: auth::JWT,
+    Path(id): Path<i32>,
+    State(ctx): State<AppContext>,
+    Form(form): Form<CurrencyForm>,
+) -> Result<Response> {
+    guard::current_admin(auth, &ctx).await?;
+    let row = currencies::Entity::find_by_id(id)
+        .one(&ctx.db)
+        .await?
+        .ok_or_else(|| Error::NotFound)?;
+    let mut active = row.into_active_model();
+    active.rate_e4 = Set(currency::parse_rate(&form.rate)?);
+    active.enabled = Set(is_checked(&form.enabled));
+    active.update(&ctx.db).await?;
+    // Keep the navbar/settings chrome snapshot in sync with the new rate/state.
+    currency::refresh_snapshot(&ctx.db).await?;
+    format::redirect("/admin/currencies")
+}
+
+pub fn routes() -> Routes {
+    Routes::new()
+        .add("/admin/currencies", get(index))
+        .add("/admin/currencies/{id}", post(update))
+}

src/controllers/admin_customers.rs

@@ -198,7 +198,6 @@ async fn show(
                 "variant_id": variant.id,
                 "name": product.name,
                 "variant_label": variant.label,
-                "currency": product.currency,
                 "regular_price": format_price(d.regular_cents),
                 "business_price": format_price(b.price_cents),
                 "business_reduced": b.price_cents < d.regular_cents,
@@ -285,7 +284,6 @@ async fn price_edit(
                 "variant_id": variant.id,
                 "name": product.name,
                 "variant_label": variant.label,
-                "currency": product.currency,
                 "regular_price": format_price(d.regular_cents),
                 "regular_cents": d.regular_cents,
                 "business_price": format_price(business_cents),

src/controllers/admin_orders.rs

@@ -202,7 +202,6 @@ async fn ship(
         country: order.country.as_deref(),
         pickup_point_id: order.pickup_point_id.as_deref(),
         cod_cents,
-        currency: &order.currency,
         value_cents: goods_value,
         weight_grams: DEFAULT_PARCEL_WEIGHT_GRAMS,
     };

src/controllers/admin_products.rs

@@ -53,7 +53,6 @@ struct ProductFields {
     slug: String,
     description: Option<String>,
     short_description: Option<String>,
-    currency: String,
     category_id: Option<i32>,
     published: bool,
 }
@@ -66,7 +65,6 @@ async fn parse_product_fields(
     let name = form
         .text("name")
         .ok_or_else(|| Error::BadRequest("product name is required".to_string()))?;
-    let currency = form.text("currency").unwrap_or_else(|| "EUR".to_string());
     let description = form.text("description");
     let short_description = form.text("short_description");
     let category_id = form.text("category_id").and_then(|s| s.parse::<i32>().ok());
@@ -94,7 +92,6 @@ async fn parse_product_fields(
         slug,
         description,
         short_description,
-        currency,
         category_id,
         published,
     })
@@ -366,7 +363,6 @@ fn product_row(
         "id": product.id,
         "name": product.name,
         "slug": product.slug,
-        "currency": product.currency,
         "stock": stock_display,
         "variant_count": variant_count,
         "has_options": variant_count > 1,
@@ -442,7 +438,6 @@ async fn create(
         slug: Set(fields.slug),
         description: Set(fields.description),
         short_description: Set(fields.short_description),
-        currency: Set(fields.currency),
         view_count: Set(0),
         published: Set(fields.published),
         published_at: Set(fields.published.then(|| chrono::Utc::now().into())),
@@ -557,7 +552,6 @@ async fn update(
     product.slug = Set(fields.slug);
     product.description = Set(fields.description);
     product.short_description = Set(fields.short_description);
-    product.currency = Set(fields.currency);
     product.category_id = Set(fields.category_id);
     product.published = Set(fields.published);
     if fields.published && !was_published {
@@ -704,7 +698,6 @@ async fn profiles_preview(
         }
         rows.push(json!({
             "id": product.id,
-            "currency": product.currency,
             "effective_price": format_price(priced.price_cents),
             "effective_reduced": priced.is_reduced(),
             "effective_percent_off": percent_off(priced.regular_cents, priced.price_cents),
@@ -816,13 +809,12 @@ impl DiscountRow {
         }
     }
 
-    fn to_json(&self, currency: &str) -> serde_json::Value {
+    fn to_json(&self) -> serde_json::Value {
         json!({
             "id": self.id,
             "label": self.label,
             "regular_cents": self.regular_cents,
             "regular_price": format_price(self.regular_cents),
-            "currency": currency,
             "mode": self.mode,
             "fixed": self.fixed,
             "percent": self.percent,
@@ -871,7 +863,7 @@ async fn discount_view(
     audience: &str,
     error: Option<&str>,
 ) -> Result<Response> {
-    let rows_json: Vec<_> = rows.iter().map(|r| r.to_json(&product.currency)).collect();
+    let rows_json: Vec<_> = rows.iter().map(DiscountRow::to_json).collect();
     let has_discount = rows.iter().any(|r| r.has_discount);
     format::view(
         v,
@@ -880,7 +872,6 @@ async fn discount_view(
             "product": {
                 "id": product.id,
                 "name": product.name,
-                "currency": product.currency,
             },
             "rows": rows_json,
             "audience": audience,

src/controllers/cart.rs

@@ -1,4 +1,4 @@
-use crate::{controllers::i18n::current_lang, shared::{guard, money::format_price, pricing}, models::{product_variants, products}};
+use crate::{controllers::i18n::current_lang, shared::{currency::{self, Currency}, guard, pricing}, models::{product_variants, products}};
 use axum::{
     http::{HeaderMap, StatusCode},
     response::Redirect,
@@ -65,7 +65,7 @@ fn cart_cookie(value: String) -> Cookie<'static> {
 }
 
 /// Look up a variant whose product is published, returning the variant together
-/// with its parent product (for name/slug/currency).
+/// with its parent product (for name/slug).
 async fn published_variant(
     ctx: &AppContext,
     variant_id: i32,
@@ -173,12 +173,8 @@ async fn cart_response(
         return Ok((jar, Redirect::to("/cart")).into_response());
     }
 
-    let (lines, valid, total) = resolve_cart(ctx, &jar).await?;
-    let currency = lines
-        .first()
-        .and_then(|line| line["currency"].as_str())
-        .unwrap_or("EUR")
-        .to_string();
+    let cur = currency::resolve(ctx, &jar).await;
+    let (lines, valid, total) = resolve_cart(ctx, &jar, &cur).await?;
     // Persist the re-validated cookie (drops now-invalid lines).
     let jar = jar.add(cart_cookie(serialize_cart(&valid)));
     let response = format::view(
@@ -186,8 +182,8 @@ async fn cart_response(
         "shop/_cart_body.html",
         json!({
             "items": lines,
-            "total": format_price(total),
-            "currency": currency,
+            "total": cur.format(total),
+            "currency_symbol": cur.symbol,
             "lang": current_lang(&jar),
         }),
     )?;
@@ -200,6 +196,7 @@ async fn cart_response(
 pub(crate) async fn resolve_cart(
     ctx: &AppContext,
     jar: &CookieJar,
+    cur: &Currency,
 ) -> Result<(Vec<serde_json::Value>, Vec<(i32, i32)>, i64)> {
     // Resolve the cart entries to in-stock products first, then price them all
     // for the current viewer in one batch (the price depends on who's logged in).
@@ -232,13 +229,12 @@ pub(crate) async fn resolve_cart(
             "name": product.name,
             "variant_label": variant.label,
             "slug": product.slug,
-            "price": format_price(unit_price),
-            "regular_price": format_price(priced.regular_cents),
+            "price": cur.format(unit_price),
+            "regular_price": cur.format(priced.regular_cents),
             "on_sale": priced.is_reduced(),
-            "currency": product.currency,
             "quantity": qty,
             "stock": variant.stock,
-            "line_total": format_price(line_total),
+            "line_total": cur.format(line_total),
         }));
     }
 
@@ -251,12 +247,8 @@ async fn show(
     ViewEngine(v): ViewEngine<TeraView>,
     State(ctx): State<AppContext>,
 ) -> Result<Response> {
-    let (lines, valid, total) = resolve_cart(&ctx, &jar).await?;
-    let currency = lines
-        .first()
-        .and_then(|line| line["currency"].as_str())
-        .unwrap_or("EUR")
-        .to_string();
+    let cur = currency::resolve(&ctx, &jar).await;
+    let (lines, valid, total) = resolve_cart(&ctx, &jar, &cur).await?;
 
     // Drop any now-invalid lines from the cookie so the badge stays accurate.
     let rebuilt = serialize_cart(&valid);
@@ -266,8 +258,8 @@ async fn show(
         "shop/cart.html",
         json!({
             "items": lines,
-            "total": format_price(total),
-            "currency": currency,
+            "total": cur.format(total),
+            "currency_symbol": cur.symbol,
             "logged_in_admin": c.logged_in_admin,
             "logged_in_customer": c.logged_in_customer,
             "customer_name": c.customer_name,
@@ -287,20 +279,16 @@ async fn preview(
     ViewEngine(v): ViewEngine<TeraView>,
     State(ctx): State<AppContext>,
 ) -> Result<Response> {
-    let (lines, valid, total) = resolve_cart(&ctx, &jar).await?;
-    let currency = lines
-        .first()
-        .and_then(|line| line["currency"].as_str())
-        .unwrap_or("EUR")
-        .to_string();
+    let cur = currency::resolve(&ctx, &jar).await;
+    let (lines, valid, total) = resolve_cart(&ctx, &jar, &cur).await?;
     let rebuilt = serialize_cart(&valid);
     let response = format::view(
         &v,
         "shop/_cart_preview.html",
         json!({
             "items": lines,
-            "total": format_price(total),
-            "currency": currency,
+            "total": cur.format(total),
+            "currency_symbol": cur.symbol,
             "lang": current_lang(&jar),
         }),
     )?;

src/controllers/checkout.rs

@@ -18,7 +18,7 @@ use crate::{
         users::{self, normalize_account_type},
     },
     controllers::i18n::current_lang,
-    shared::{guard, money::format_price, settings},
+    shared::{currency::Currency, guard, money::format_price, settings},
     views::checkout as view,
 };
 
@@ -77,15 +77,12 @@ async fn checkout_page(
     ViewEngine(v): ViewEngine<TeraView>,
     State(ctx): State<AppContext>,
 ) -> Result<Response> {
-    let (lines, _valid, subtotal) = resolve_cart(&ctx, &jar).await?;
+    // Checkout and everything past it (orders, confirmation) stay in the EUR
+    // base — the settlement currency — even when the buyer browsed in another.
+    let (lines, _valid, subtotal) = resolve_cart(&ctx, &jar, &Currency::eur()).await?;
     if lines.is_empty() {
         return format::redirect("/cart");
     }
-    let currency = lines
-        .first()
-        .and_then(|line| line["currency"].as_str())
-        .unwrap_or("EUR")
-        .to_string();
 
     let methods: Vec<serde_json::Value> = enabled_shipping_methods(&ctx)
         .await?
@@ -127,7 +124,6 @@ async fn checkout_page(
             "items": lines,
             "subtotal": format_price(subtotal),
             "subtotal_cents": subtotal,
-            "currency": currency,
             "shipping_methods": methods,
             "packeta_api_key": settings::get(&ctx, "packeta_api_key").unwrap_or(""),
             "logged_in_admin": is_admin,
@@ -165,7 +161,7 @@ async fn place_order(
     State(ctx): State<AppContext>,
     Form(form): Form<CheckoutForm>,
 ) -> Result<Response> {
-    let (_lines, valid, _total) = resolve_cart(&ctx, &jar).await?;
+    let (_lines, valid, _total) = resolve_cart(&ctx, &jar, &Currency::eur()).await?;
     if valid.is_empty() {
         return format::redirect("/cart");
     }

src/controllers/currency.rs

@@ -0,0 +1,39 @@
+//! Storefront display-currency switcher.
+//!
+//! Sets the `currency` cookie to the buyer's chosen display currency, then sends
+//! them back where they were. EUR is the base; any other code must name an
+//! enabled row in `currencies` or it falls back to EUR on the next render.
+
+use axum::{
+    http::{header, HeaderMap},
+    response::Redirect,
+};
+use loco_rs::prelude::*;
+use serde::Deserialize;
+
+use crate::controllers::i18n::back_path;
+use crate::shared::currency::{BASE_CODE, COOKIE};
+
+#[derive(Debug, Deserialize)]
+pub struct CurrencyForm {
+    pub currency: String,
+}
+
+#[debug_handler]
+async fn set_currency(headers: HeaderMap, Form(form): Form<CurrencyForm>) -> Result<Response> {
+    // Store the code uppercased; validation against the enabled set happens at
+    // render time (shared::currency::resolve), which falls back to EUR.
+    let code = form.currency.trim().to_uppercase();
+    let code = if code.is_empty() { BASE_CODE.to_string() } else { code };
+    let cookie = format!("{COOKIE}={code}; Path=/; Max-Age=31536000; SameSite=Lax");
+
+    Ok((
+        [(header::SET_COOKIE, cookie)],
+        Redirect::to(&back_path(&headers)),
+    )
+        .into_response())
+}
+
+pub fn routes() -> Routes {
+    Routes::new().add("/currency", post(set_currency))
+}

src/controllers/home.rs

@@ -4,7 +4,9 @@ use axum_extra::extract::cookie::CookieJar;
 use loco_rs::prelude::*;
 use serde_json::json;
 
-use crate::{controllers::i18n::current_lang, shared::guard, controllers::shop};
+use crate::{
+    controllers::i18n::current_lang, controllers::shop, shared::currency, shared::guard,
+};
 
 #[debug_handler]
 async fn index(
@@ -13,7 +15,8 @@ async fn index(
     State(ctx): State<AppContext>,
 ) -> Result<Response> {
     let user = guard::current_user(&ctx, &jar).await;
-    let products = shop::featured_products(&ctx, user.as_ref(), 8).await?;
+    let cur = currency::resolve(&ctx, &jar).await;
+    let products = shop::featured_products(&ctx, user.as_ref(), 8, &cur).await?;
     let c = guard::chrome_from(&ctx, user.as_ref());
 
     format::view(
@@ -25,6 +28,7 @@ async fn index(
             "logged_in_customer": c.logged_in_customer,
             "customer_name": c.customer_name,
             "customer_account_type": c.customer_account_type,
+            "currency_symbol": cur.symbol,
             "lang": current_lang(&jar),
         }),
     )

src/controllers/i18n.rs

@@ -34,7 +34,7 @@ async fn set_lang(headers: HeaderMap, Form(form): Form<LangForm>) -> Result<Resp
         .into_response())
 }
 
-fn back_path(headers: &HeaderMap) -> String {
+pub(crate) fn back_path(headers: &HeaderMap) -> String {
     let raw = headers
         .get(header::REFERER)
         .and_then(|value| value.to_str().ok())

src/controllers/mod.rs

@@ -3,6 +3,7 @@ pub mod auth;
 pub mod auth_pages;
 pub mod oauth2;
 pub mod admin_categories;
+pub mod admin_currencies;
 pub mod admin_customers;
 pub mod admin_dashboard;
 pub mod admin_discount_profiles;
@@ -12,6 +13,7 @@ pub mod admin_products;
 pub mod admin_shipping;
 pub mod cart;
 pub mod checkout;
+pub mod currency;
 pub mod home;
 pub mod i18n;
 pub mod media;

src/controllers/shop.rs

@@ -13,8 +13,9 @@ use serde_json::json;
 use crate::{
     controllers::i18n::current_lang,
     shared::{
+        currency::{self, Currency},
         guard,
-        money::{format_price, parse_price_to_cents},
+        money::parse_price_to_cents,
         pricing,
     },
     models::{categories, product_images, product_variants, products, users},
@@ -90,6 +91,7 @@ async fn run_search(
     ctx: &AppContext,
     user: Option<&users::Model>,
     params: &SearchParams,
+    cur: &Currency,
 ) -> Result<serde_json::Value> {
     let q = params.q.clone().unwrap_or_default();
     let q_trim = q.trim().to_string();
@@ -136,9 +138,19 @@ async fn run_search(
     let price_floor = items.iter().map(|i| i.priced.price_cents).min().unwrap_or(0);
     let price_ceil = items.iter().map(|i| i.priced.price_cents).max().unwrap_or(0);
 
-    // 3. Non-category filters: price band + in-stock.
-    let min_c = params.min_price.as_deref().and_then(|s| parse_price_to_cents(s).ok());
-    let max_c = params.max_price.as_deref().and_then(|s| parse_price_to_cents(s).ok());
+    // 3. Non-category filters: price band + in-stock. The typed bounds are in
+    //    the buyer's display currency; convert them back to EUR cents to compare
+    //    against the (EUR) resolved prices.
+    let min_c = params
+        .min_price
+        .as_deref()
+        .and_then(|s| parse_price_to_cents(s).ok())
+        .map(|c| cur.to_eur_cents(c));
+    let max_c = params
+        .max_price
+        .as_deref()
+        .and_then(|s| parse_price_to_cents(s).ok())
+        .map(|c| cur.to_eur_cents(c));
     let in_stock_only = is_on(&params.in_stock);
     items.retain(|i| {
         min_c.is_none_or(|m| i.priced.price_cents >= m)
@@ -203,6 +215,7 @@ async fn run_search(
             item.count,
             image,
             cat_name,
+            cur,
         ));
     }
 
@@ -219,8 +232,9 @@ async fn run_search(
         "in_stock": in_stock_only,
         "min_price": params.min_price.clone().unwrap_or_default(),
         "max_price": params.max_price.clone().unwrap_or_default(),
-        "price_floor": format_price(price_floor),
-        "price_ceil": format_price(price_ceil),
+        "price_floor": cur.format(price_floor),
+        "price_ceil": cur.format(price_ceil),
+        "currency_symbol": cur.symbol,
         "total": total,
         "page": page,
         "pages": pages,
@@ -240,6 +254,7 @@ async fn product_rows(
     ctx: &AppContext,
     user: Option<&users::Model>,
     list: Vec<products::Model>,
+    cur: &Currency,
 ) -> Result<Vec<serde_json::Value>> {
     let ids: Vec<i32> = list.iter().map(|p| p.id).collect();
     let grouped = product_variants::Entity::grouped_for_products(&ctx.db, &ids).await?;
@@ -261,7 +276,7 @@ async fn product_rows(
     let mut rows = Vec::with_capacity(entries.len());
     for ((product, rep, count), priced) in entries.iter().zip(priced.iter()) {
         let image = product_images::first_for(ctx, product.id).await?;
-        rows.push(view::product_card(product, rep, priced, *count, image, None));
+        rows.push(view::product_card(product, rep, priced, *count, image, None, cur));
     }
     Ok(rows)
 }
@@ -272,6 +287,7 @@ pub(crate) async fn featured_products(
     ctx: &AppContext,
     user: Option<&users::Model>,
     limit: u64,
+    cur: &Currency,
 ) -> Result<Vec<serde_json::Value>> {
     let list = products::Entity::find()
         .filter(products::Column::Published.eq(true))
@@ -279,7 +295,7 @@ pub(crate) async fn featured_products(
         .limit(limit)
         .all(&ctx.db)
         .await?;
-    product_rows(ctx, user, list).await
+    product_rows(ctx, user, list, cur).await
 }
 
 /// The site-wide category sidebar, loaded lazily via htmx by the base layout so
@@ -320,7 +336,8 @@ async fn index(
     State(ctx): State<AppContext>,
 ) -> Result<Response> {
     let user = guard::current_user(&ctx, &jar).await;
-    let mut context = run_search(&ctx, user.as_ref(), &SearchParams::default()).await?;
+    let cur = currency::resolve(&ctx, &jar).await;
+    let mut context = run_search(&ctx, user.as_ref(), &SearchParams::default(), &cur).await?;
     let c = guard::chrome_from(&ctx, user.as_ref());
     add_chrome(&mut context, &c, &current_lang(&jar));
     format::view(&v, "shop/index.html", context)
@@ -341,7 +358,8 @@ async fn search(
     State(ctx): State<AppContext>,
 ) -> Result<Response> {
     let user = guard::current_user(&ctx, &jar).await;
-    let mut context = run_search(&ctx, user.as_ref(), &params).await?;
+    let cur = currency::resolve(&ctx, &jar).await;
+    let mut context = run_search(&ctx, user.as_ref(), &params, &cur).await?;
     let lang = current_lang(&jar);
 
     if headers.contains_key("HX-Request") {
@@ -385,12 +403,13 @@ async fn show(
     };
 
     let user = guard::current_user(&ctx, &jar).await;
+    let cur = currency::resolve(&ctx, &jar).await;
     let variants = product_variants::Entity::for_product(&ctx.db, product.id).await?;
     let variant_prices = pricing::price_variants(&ctx, &variants, user.as_ref()).await?;
     let options: Vec<serde_json::Value> = variants
         .iter()
         .zip(variant_prices.iter())
-        .map(|(variant, priced)| view::variant_option(variant, priced))
+        .map(|(variant, priced)| view::variant_option(variant, priced, &cur))
         .collect();
     // The card header uses the representative (first) variant for its headline
     // price; the picker below lets the customer switch.
@@ -404,6 +423,7 @@ async fn show(
             variants.len(),
             None,
             category.as_ref().map(|c| c.name.clone()),
+            &cur,
         ),
         // A product with no variants isn't purchasable; show it without a price.
         _ => serde_json::json!({
@@ -411,7 +431,6 @@ async fn show(
             "name": product.name,
             "slug": product.slug,
             "description": product.description,
-            "currency": product.currency,
             "variant_count": 0,
             "has_options": false,
         }),
@@ -429,6 +448,7 @@ async fn show(
             "logged_in_customer": c.logged_in_customer,
             "customer_name": c.customer_name,
             "customer_account_type": c.customer_account_type,
+            "currency_symbol": cur.symbol,
             "lang": current_lang(&jar),
         }),
     )
@@ -464,7 +484,8 @@ async fn category(
     };
 
     let user = guard::current_user(&ctx, &jar).await;
-    let mut context = run_search(&ctx, user.as_ref(), &params).await?;
+    let cur = currency::resolve(&ctx, &jar).await;
+    let mut context = run_search(&ctx, user.as_ref(), &params, &cur).await?;
     if let Some(map) = context.as_object_mut() {
         map.insert("category".into(), serde_json::to_value(&category)?);
         map.insert("breadcrumbs".into(), serde_json::to_value(&breadcrumbs)?);

src/initializers/currency_seeder.rs

@@ -0,0 +1,52 @@
+//! Ensures the built-in alternative display currencies always exist.
+//!
+//! EUR is the base currency and is never stored. For now the only alternative is
+//! the Czech koruna (CZK); the admin sets its exchange rate and can disable it.
+//! We insert each one only when its `code` is missing, so an admin's rate/enabled
+//! changes are never overwritten on the next boot.
+
+use async_trait::async_trait;
+use loco_rs::prelude::*;
+use sea_orm::{ActiveModelTrait, ColumnTrait, EntityTrait, PaginatorTrait, QueryFilter, Set};
+
+use crate::models::currencies;
+use crate::shared::currency::{self, SCALE};
+
+/// `(code, symbol, default_rate_e4)` — default rate is a placeholder the admin
+/// is expected to update from the live FX rate.
+const BUILTINS: [(&str, &str, i64); 1] = [("CZK", "Kč", 25 * SCALE)];
+
+pub struct CurrencySeeder;
+
+#[async_trait]
+impl Initializer for CurrencySeeder {
+    fn name(&self) -> String {
+        "currency-seeder".to_string()
+    }
+
+    async fn before_run(&self, ctx: &AppContext) -> Result<()> {
+        for (code, symbol, rate_e4) in BUILTINS {
+            let exists = currencies::Entity::find()
+                .filter(currencies::Column::Code.eq(code))
+                .count(&ctx.db)
+                .await?
+                > 0;
+            if exists {
+                continue;
+            }
+            currencies::ActiveModel {
+                code: Set(code.to_string()),
+                symbol: Set(symbol.to_string()),
+                rate_e4: Set(rate_e4),
+                enabled: Set(true),
+                ..Default::default()
+            }
+            .insert(&ctx.db)
+            .await?;
+            tracing::info!(currency = code, "seeded display currency");
+        }
+        // Prime the process-wide snapshot used by the navbar/settings chrome.
+        currency::refresh_snapshot(&ctx.db).await?;
+        Ok(())
+    }
+}

src/initializers/mod.rs

@@ -1,4 +1,5 @@
 pub mod admin_seeder;
+pub mod currency_seeder;
 pub mod oauth2;
 pub mod oauth2_session;
 pub mod shipping_seeder;

src/initializers/view_engine.rs

@@ -54,6 +54,12 @@ impl Initializer for ViewEngineInitializer {
                     crate::shared::csrf::current_token().unwrap_or_default(),
                 ))
             });
+            // `currencies()`: the EUR base plus enabled alternative currencies
+            // (from the process-wide snapshot), used by the global chrome — the
+            // settings-menu switcher and the navbar exchange-rate display.
+            tera.register_function("currencies", |_args: &HashMap<String, serde_json::Value>| {
+                Ok(crate::shared::currency::selectable_json())
+            });
             Ok(())
         })?;
 

src/integrations/mod.rs

@@ -28,7 +28,6 @@ pub struct ShipmentRequest<'a> {
     pub pickup_point_id: Option<&'a str>,
     /// Cash-on-delivery amount in cents; `0` when payment is not COD.
     pub cod_cents: i64,
-    pub currency: &'a str,
     /// Total order value in cents (for insurance / customs declarations).
     pub value_cents: i64,
     pub weight_grams: i32,

src/integrations/packeta.rs

@@ -77,7 +77,7 @@ pub async fn create_shipment(ctx: &AppContext, req: ShipmentRequest<'_>) -> Resu
         xml_escape(address_id),
         value,
         cod,
-        xml_escape(req.currency),
+        "EUR",
         weight_kg,
         xml_escape(sender_label),
     );

src/models/_entities/currencies.rs

@@ -0,0 +1,22 @@
+//! `SeaORM` Entity, @generated by sea-orm-codegen 1.1.19
+
+use sea_orm::entity::prelude::*;
+use serde::{Deserialize, Serialize};
+
+#[derive(Clone, Debug, PartialEq, DeriveEntityModel, Eq, Serialize, Deserialize)]
+#[sea_orm(table_name = "currencies")]
+pub struct Model {
+    pub created_at: DateTimeWithTimeZone,
+    pub updated_at: DateTimeWithTimeZone,
+    #[sea_orm(primary_key)]
+    pub id: i32,
+    #[sea_orm(unique)]
+    pub code: String,
+    pub symbol: String,
+    /// Units of this currency per 1 EUR, scaled ×10000 (e.g. 25.30 → 253000).
+    pub rate_e4: i64,
+    pub enabled: bool,
+}
+
+#[derive(Copy, Clone, Debug, EnumIter, DeriveRelation)]
+pub enum Relation {}

src/models/_entities/mod.rs

@@ -8,6 +8,7 @@ pub mod account_product_resolutions;
 pub mod audience_discount_profiles;
 pub mod audit_logs;
 pub mod categories;
+pub mod currencies;
 pub mod customer_profiles;
 pub mod discount_profile_products;
 pub mod discount_profiles;

src/models/_entities/orders.rs

@@ -16,7 +16,6 @@ pub struct Model {
     pub customer_name: Option<String>,
     pub status: String,
     pub total_cents: i64,
-    pub currency: String,
     pub address: Option<String>,
     pub city: Option<String>,
     pub zip: Option<String>,

src/models/_entities/prelude.rs

@@ -6,6 +6,7 @@ pub use super::account_product_resolutions::Entity as AccountProductResolutions;
 pub use super::audience_discount_profiles::Entity as AudienceDiscountProfiles;
 pub use super::audit_logs::Entity as AuditLogs;
 pub use super::categories::Entity as Categories;
+pub use super::currencies::Entity as Currencies;
 pub use super::customer_profiles::Entity as CustomerProfiles;
 pub use super::discount_profile_products::Entity as DiscountProfileProducts;
 pub use super::discount_profiles::Entity as DiscountProfiles;

src/models/_entities/products.rs

@@ -17,7 +17,6 @@ pub struct Model {
     pub description: Option<String>,
     #[sea_orm(column_type = "Text", nullable)]
     pub short_description: Option<String>,
-    pub currency: String,
     pub view_count: i32,
     pub published: bool,
     pub published_at: Option<DateTimeWithTimeZone>,

src/models/currencies.rs

@@ -0,0 +1,40 @@
+use sea_orm::entity::prelude::*;
+pub use crate::models::_entities::currencies::{ActiveModel, Column, Entity, Model};
+pub type Currencies = Entity;
+
+#[async_trait::async_trait]
+impl ActiveModelBehavior for ActiveModel {
+    async fn before_save<C>(self, _db: &C, insert: bool) -> std::result::Result<Self, DbErr>
+    where
+        C: ConnectionTrait,
+    {
+        if !insert && self.updated_at.is_unchanged() {
+            let mut this = self;
+            this.updated_at = sea_orm::ActiveValue::Set(chrono::Utc::now().into());
+            Ok(this)
+        } else {
+            Ok(self)
+        }
+    }
+}
+
+// implement your read-oriented logic here
+impl Model {}
+
+// implement your write-oriented logic here
+impl ActiveModel {}
+
+// implement your custom finders, selectors oriented logic here
+impl Entity {
+    /// An enabled currency by its ISO code (case-insensitive), or `None`.
+    pub async fn find_enabled_by_code<C: ConnectionTrait>(
+        db: &C,
+        code: &str,
+    ) -> Result<Option<Model>, DbErr> {
+        Entity::find()
+            .filter(Column::Code.eq(code.to_uppercase()))
+            .filter(Column::Enabled.eq(true))
+            .one(db)
+            .await
+    }
+}

src/models/mod.rs

@@ -12,6 +12,7 @@ pub mod account_product_resolutions;
 pub mod audience_discount_profiles;
 pub mod audit_logs;
 pub mod categories;
+pub mod currencies;
 pub mod discount_profile_products;
 pub mod discount_profiles;
 pub mod customer_profiles;

src/models/orders.rs

@@ -53,7 +53,6 @@ pub async fn place(
     let txn = ctx.db.begin().await?;
 
     let mut subtotal: i64 = 0;
-    let mut currency = "EUR".to_string();
     let mut snapshots = Vec::new();
     for (variant_id, qty) in items {
         let variant = product_variants::Entity::find_by_id(*variant_id)
@@ -75,7 +74,6 @@ pub async fn place(
                 )));
             }
         }
-        currency = product.currency.clone();
         // Snapshot the price the buyer actually pays — public sale or, for a
         // business account, their negotiated/lowest price (same resolver the
         // cart and storefront use).
@@ -98,7 +96,6 @@ pub async fn place(
         customer_name: Set(details.customer_name),
         status: Set("pending".to_string()),
         total_cents: Set(subtotal + details.method.price_cents),
-        currency: Set(currency),
         user_id: Set(details.user_id),
         account_type: Set(details.account_type),
         company_name: Set(details.company_name),

src/models/products.rs

@@ -57,7 +57,7 @@ impl Entity {
         let sql = format!(
             r#"
             SELECT p.created_at, p.updated_at, p.id, p.name, p.slug, p.description,
-                   p.currency, p.view_count, p.published, p.published_at, p.category_id
+                   p.short_description, p.view_count, p.published, p.published_at, p.category_id
             FROM products p
             WHERE {published_clause} (
                   p.search_vector @@ websearch_to_tsquery('sk_unaccent', $1)

src/seed.rs

@@ -161,7 +161,6 @@ pub async fn seed_catalog(ctx: &AppContext) -> Result<()> {
             name: Set(item.name.to_string()),
             slug: Set(product_slug),
             description: Set(Some(item.description.to_string())),
-            currency: Set("EUR".to_string()),
             published: Set(true),
             published_at: Set(Some(now.into())),
             category_id: Set(category.map(|c| c.id)),

src/shared/currency.rs

@@ -0,0 +1,206 @@
+//! Buyer-selectable display currency.
+//!
+//! EUR is the base/transaction currency: every price is stored and reasoned
+//! about in EUR minor units (cents). A buyer may switch their *display* currency
+//! (cookie [`COOKIE`]); non-base currencies live in the `currencies` table with
+//! an admin-set exchange `rate_e4` (units per 1 EUR, scaled ×10000). The
+//! [`Currency`] resolved per request converts EUR cents into the chosen currency
+//! for display only — the cart logic, orders and admin stay in EUR.
+
+use std::sync::RwLock;
+
+use axum_extra::extract::cookie::CookieJar;
+use loco_rs::prelude::*;
+use sea_orm::{ColumnTrait, EntityTrait, QueryFilter, QueryOrder};
+
+use crate::models::currencies;
+use crate::shared::money::format_price;
+
+/// Cookie holding the buyer's chosen display-currency code.
+pub const COOKIE: &str = "currency";
+/// The base/transaction currency code.
+pub const BASE_CODE: &str = "EUR";
+/// The base currency symbol.
+pub const BASE_SYMBOL: &str = "€";
+/// Fixed-point scale for exchange rates (`rate_e4` = rate × 10000).
+pub const SCALE: i64 = 10_000;
+
+/// A resolved display currency: how to label prices and how to convert them
+/// from the EUR base.
+#[derive(Debug, Clone)]
+pub struct Currency {
+    pub code: String,
+    pub symbol: String,
+    /// Units of this currency per 1 EUR, scaled ×10000. `SCALE` for the base.
+    pub rate_e4: i64,
+}
+
+impl Currency {
+    /// The base currency (EUR), the identity conversion.
+    #[must_use]
+    pub fn eur() -> Self {
+        Self {
+            code: BASE_CODE.to_string(),
+            symbol: BASE_SYMBOL.to_string(),
+            rate_e4: SCALE,
+        }
+    }
+
+    #[must_use]
+    pub fn is_base(&self) -> bool {
+        self.code == BASE_CODE
+    }
+
+    /// Convert EUR minor units into this currency's minor units (half-up).
+    #[must_use]
+    pub fn convert_cents(&self, eur_cents: i64) -> i64 {
+        if self.is_base() {
+            return eur_cents;
+        }
+        let scale = i128::from(SCALE);
+        ((i128::from(eur_cents) * i128::from(self.rate_e4) + scale / 2) / scale) as i64
+    }
+
+    /// Inverse of [`convert_cents`]: this currency's minor units back to EUR
+    /// minor units (half-up). Used to interpret price-filter bounds typed in the
+    /// display currency.
+    #[must_use]
+    pub fn to_eur_cents(&self, cents: i64) -> i64 {
+        if self.is_base() || self.rate_e4 == 0 {
+            return cents;
+        }
+        let rate = i128::from(self.rate_e4);
+        ((i128::from(cents) * i128::from(SCALE) + rate / 2) / rate) as i64
+    }
+
+    /// Render EUR minor units as a plain decimal string in this currency (no
+    /// symbol). The symbol is appended by templates via `currency_symbol`.
+    #[must_use]
+    pub fn format(&self, eur_cents: i64) -> String {
+        format_price(self.convert_cents(eur_cents))
+    }
+}
+
+/// Resolve the buyer's display currency from the `currency` cookie, falling back
+/// to EUR when the cookie is absent, names the base, or names a currency that is
+/// missing or disabled.
+pub async fn resolve(ctx: &AppContext, jar: &CookieJar) -> Currency {
+    let code = jar
+        .get(COOKIE)
+        .map(|c| c.value().to_string())
+        .unwrap_or_default();
+    if code.is_empty() || code.eq_ignore_ascii_case(BASE_CODE) {
+        return Currency::eur();
+    }
+    match currencies::Entity::find_enabled_by_code(&ctx.db, &code).await {
+        Ok(Some(m)) => Currency {
+            code: m.code,
+            symbol: m.symbol,
+            rate_e4: m.rate_e4,
+        },
+        _ => Currency::eur(),
+    }
+}
+
+/// One enabled, buyer-selectable alternative currency in the process-wide
+/// snapshot below.
+#[derive(Clone)]
+struct Selectable {
+    code: String,
+    symbol: String,
+    rate_e4: i64,
+}
+
+/// Process-wide snapshot of the enabled alternative currencies, so the global
+/// chrome (the settings-menu switcher and the navbar rate) can be rendered via a
+/// Tera function without a per-request DB hit. Loaded at boot by
+/// `initializers::currency_seeder` and refreshed by the admin on every edit (see
+/// [`refresh_snapshot`]). EUR (the base) is implicit and never listed here.
+static ENABLED: RwLock<Vec<Selectable>> = RwLock::new(Vec::new());
+
+/// Reload the [`ENABLED`] snapshot from the database. Call at boot and after any
+/// admin change to a currency's rate/enabled state.
+pub async fn refresh_snapshot<C: sea_orm::ConnectionTrait>(db: &C) -> Result<()> {
+    let rows = currencies::Entity::find()
+        .filter(currencies::Column::Enabled.eq(true))
+        .order_by_asc(currencies::Column::Code)
+        .all(db)
+        .await?;
+    let list = rows
+        .into_iter()
+        .map(|m| Selectable {
+            code: m.code,
+            symbol: m.symbol,
+            rate_e4: m.rate_e4,
+        })
+        .collect();
+    *ENABLED.write().unwrap() = list;
+    Ok(())
+}
+
+/// The selectable currencies for templates (the Tera `currencies()` function):
+/// the EUR base plus every enabled alternative, each with a human rate string.
+/// `alts` is empty when the store is effectively EUR-only.
+#[must_use]
+pub fn selectable_json() -> serde_json::Value {
+    let alts: Vec<serde_json::Value> = ENABLED
+        .read()
+        .unwrap()
+        .iter()
+        .map(|s| {
+            serde_json::json!({
+                "code": s.code,
+                "symbol": s.symbol,
+                "rate": format_rate(s.rate_e4),
+            })
+        })
+        .collect();
+    serde_json::json!({
+        "base": { "code": BASE_CODE, "symbol": BASE_SYMBOL },
+        "alts": alts,
+    })
+}
+
+/// Parse an exchange rate typed in major units ("25", "25.3", "25,30",
+/// "25.3045") into `rate_e4` (×10000). Rejects negatives and >4 decimals.
+pub fn parse_rate(value: &str) -> Result<i64> {
+    let value = value.trim().replace(',', ".");
+    let invalid = || Error::BadRequest("invalid exchange rate".to_string());
+    let (whole, frac) = match value.split_once('.') {
+        Some((w, f)) => (w, f),
+        None => (value.as_str(), ""),
+    };
+    if frac.len() > 4 || whole.is_empty() || !whole.chars().all(|c| c.is_ascii_digit()) {
+        return Err(invalid());
+    }
+    if !frac.chars().all(|c| c.is_ascii_digit()) {
+        return Err(invalid());
+    }
+    let whole: i64 = whole.parse().map_err(|_| invalid())?;
+    // Right-pad the fractional part to exactly 4 digits.
+    let padded = format!("{frac:0<4}");
+    let frac: i64 = if padded.is_empty() {
+        0
+    } else {
+        padded.parse().map_err(|_| invalid())?
+    };
+    let rate = whole * SCALE + frac;
+    if rate <= 0 {
+        return Err(invalid());
+    }
+    Ok(rate)
+}
+
+/// Render `rate_e4` as a human string, trimming trailing zeros (253000 → "25.3",
+/// 250000 → "25").
+#[must_use]
+pub fn format_rate(rate_e4: i64) -> String {
+    let whole = rate_e4 / SCALE;
+    let frac = (rate_e4 % SCALE).abs();
+    if frac == 0 {
+        return whole.to_string();
+    }
+    let frac = format!("{frac:04}");
+    let trimmed = frac.trim_end_matches('0');
+    format!("{whole}.{trimmed}")
+}

src/shared/mod.rs

@@ -1,6 +1,7 @@
 //! Cross-cutting helpers used across feature slices.
 
 pub mod csrf;
+pub mod currency;
 pub mod guard;
 pub mod money;
 pub mod pricing;

src/views/checkout.rs

@@ -40,7 +40,6 @@ pub fn detail(order: &orders::Model, bank_iban: &str, bank_account_name: &str) -
         "subtotal": format_price(order.total_cents - order.shipping_cents),
         "shipping": format_price(order.shipping_cents),
         "total": format_price(order.total_cents),
-        "currency": order.currency,
         "address": order.address,
         "city": order.city,
         "zip": order.zip,
@@ -68,7 +67,6 @@ pub fn summary(order: &orders::Model) -> Value {
         "email": order.email,
         "status": order.status,
         "total": format_price(order.total_cents),
-        "currency": order.currency,
         "created_at": order.created_at.to_rfc3339(),
     })
 }

src/views/shop.rs

@@ -3,7 +3,7 @@
 use serde_json::{json, Value};
 
 use crate::models::_entities::{categories, product_images, product_variants, products};
-use crate::shared::money::format_price;
+use crate::shared::currency::Currency;
 use crate::shared::pricing::PricedProduct;
 
 /// Card/list shape for a product: model fields plus the viewer's resolved price
@@ -20,6 +20,7 @@ pub fn product_card(
     variant_count: usize,
     image: Option<String>,
     category_name: Option<String>,
+    cur: &Currency,
 ) -> Value {
     json!({
         "id": product.id,
@@ -28,11 +29,10 @@ pub fn product_card(
         "slug": product.slug,
         "description": product.description,
         "short_description": product.short_description,
-        "price": format_price(priced.price_cents),
+        "price": cur.format(priced.price_cents),
         "on_sale": priced.is_reduced(),
         "is_business": priced.is_business,
-        "regular_price": format_price(priced.regular_cents),
-        "currency": product.currency,
+        "regular_price": cur.format(priced.regular_cents),
         "sku": representative.sku,
         "stock": representative.stock,
         "tracked": representative.tracked(),
@@ -46,7 +46,11 @@ pub fn product_card(
 }
 
 /// One priced variant row for the product detail page's option picker.
-pub fn variant_option(variant: &product_variants::Model, priced: &PricedProduct) -> Value {
+pub fn variant_option(
+    variant: &product_variants::Model,
+    priced: &PricedProduct,
+    cur: &Currency,
+) -> Value {
     json!({
         "id": variant.id,
         "label": variant.label,
@@ -54,9 +58,9 @@ pub fn variant_option(variant: &product_variants::Model, priced: &PricedProduct)
         "stock": variant.stock,
         "tracked": variant.tracked(),
         "in_stock": variant.in_stock(),
-        "price": format_price(priced.price_cents),
+        "price": cur.format(priced.price_cents),
         "on_sale": priced.is_reduced(),
-        "regular_price": format_price(priced.regular_cents),
+        "regular_price": cur.format(priced.regular_cents),
         "is_business": priced.is_business,
     })
 }
@@ -71,7 +75,6 @@ pub fn product_form(product: &products::Model, images: &[product_images::Model])
         "slug": product.slug,
         "description": product.description,
         "short_description": product.short_description,
-        "currency": product.currency,
         "published": product.published,
         "category_id": product.category_id,
         "images": images