loco straucture

src/models/product_images.rs

@@ -0,0 +1,47 @@
+use loco_rs::prelude::*;
+use sea_orm::entity::prelude::*;
+use sea_orm::QueryOrder;
+
+pub use crate::models::_entities::product_images::{ActiveModel, Column, Entity, Model};
+pub type ProductImages = 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 write-oriented logic here
+impl ActiveModel {}
+
+// implement your custom finders, selectors oriented logic here
+impl Entity {}
+
+/// Filename of a product's primary (lowest-position) image, if any.
+pub async fn first_for(ctx: &AppContext, product_id: i32) -> Result<Option<String>> {
+    Ok(Entity::find()
+        .filter(Column::ProductId.eq(product_id))
+        .order_by_asc(Column::Position)
+        .one(&ctx.db)
+        .await?
+        .map(|image| image.image_id))
+}
+
+/// Number of images already attached to a product, used to position new uploads.
+pub async fn count_for(ctx: &AppContext, product_id: i32) -> Result<i32> {
+    use sea_orm::PaginatorTrait;
+    Ok(Entity::find()
+        .filter(Column::ProductId.eq(product_id))
+        .count(&ctx.db)
+        .await? as i32)
+}