Added variant update functionality.

common/src/models/variant.rs

@@ -88,3 +88,38 @@ pub async fn insert_variant(article_id: i64, variant: &Variant, pool: PgPool) ->
         }
     }
 }
+
+pub async fn update_variant(variant_id: i64, variant: &Variant, pool: PgPool) -> Option<Variant> {
+    let mut args = PgArguments::default();
+    args.add(&variant.id);
+    args.add(&variant.weight);
+    args.add(&variant.ean);
+    args.add(&variant.name);
+    args.add(&variant.description);
+    args.add(&variant.ingredients);
+
+    info!("Variant: {:#?}", variant);
+
+    let statement = format!(
+        "UPDATE {} SET weight = $2, ean = $3, name = $4, description = $5, ingredients = $6 WHERE id = $1 RETURNING *",
+        "variant",
+    );
+
+    let res = sqlx::query_with(
+        statement.as_str(),
+        args)
+        .fetch_one(&pool).await;
+
+    info!("{:#?}", res);
+
+    match res {
+        Ok(record) => {
+            let variant = from_postgres_row_small(record);
+            Some(variant)
+        }
+        Err(err) => {
+            error!("Error while updating variant: {}", variant_id);
+            None
+        }
+    }
+}