I can see the product with different options

src/controllers/admin_products.rs

@@ -104,13 +104,12 @@ struct VariantInput {
     sku: Option<String>,
     stock: i32,
     price_cents: i64,
-    sale_cents: Option<i64>,
     business_sale_cents: Option<i64>,
     position: i32,
 }
 
-/// An optional price field on a variant row (sale / business sale): blank means
-/// "no quick-sale", a value must parse and be below the regular price.
+/// The optional business-sale price field on a variant row: blank means "no
+/// business quick-sale", a value must parse and be below the regular price.
 fn parse_optional_sale(
     form: &MultipartForm,
     i: usize,
@@ -161,8 +160,7 @@ fn parse_variants(form: &MultipartForm) -> Result<Vec<VariantInput>> {
             .text(&format!("variants[{i}][stock]"))
             .and_then(|s| s.parse::<i32>().ok())
             .filter(|n| *n >= 0)
-            .unwrap_or(0);
-        let sale_cents = parse_optional_sale(form, i, "sale", price_cents)?;
+            .ok_or_else(|| Error::BadRequest("each option needs a stock quantity".to_string()))?;
         let business_sale_cents = parse_optional_sale(form, i, "business_sale", price_cents)?;
         let id = form
             .text(&format!("variants[{i}][id]"))
@@ -174,7 +172,6 @@ fn parse_variants(form: &MultipartForm) -> Result<Vec<VariantInput>> {
             sku,
             stock,
             price_cents,
-            sale_cents,
             business_sale_cents,
             position: out.len() as i32,
         });
@@ -193,7 +190,8 @@ fn apply_variant(active: &mut product_variants::ActiveModel, input: &VariantInpu
     active.sku = Set(input.sku.clone());
     active.stock = Set(input.stock);
     active.price_cents = Set(input.price_cents);
-    active.sale_price_cents = Set(input.sale_cents);
+    // The per-variant public sale price was removed from the UI; keep it cleared.
+    active.sale_price_cents = Set(None);
     active.business_sale_price_cents = Set(input.business_sale_cents);
     active.position = Set(input.position);
 }
@@ -252,7 +250,6 @@ fn variant_form_json(variant: &product_variants::Model) -> serde_json::Value {
         "sku": variant.sku,
         "stock": variant.stock,
         "price": format_price(variant.price_cents),
-        "sale": variant.sale_price_cents.map(format_price),
         "business_sale": variant.business_sale_price_cents.map(format_price),
     })
 }