12626: add explaination for clone failure

app/controllers/admin/products_v3_controller.rb

@@ -8,6 +8,16 @@ module Admin
     before_action :init_filters_params
     before_action :init_pagination_params
 
+    VIEW_FIELD_NAME_MAPPER = {
+      name: I18n.t("admin.products_page.columns.name"),
+      sku: I18n.t('admin.products_page.columns.sku'),
+      variant_unit: I18n.t('admin.products_page.columns.unit_scale'),
+      unit_presentation: I18n.t('admin.products_page.columns.unit'),
+      supplier_id: I18n.t('admin.products_page.columns.producer'),
+      primary_taxon_id: I18n.t('admin.products_page.columns.category'),
+      tax_category_id: I18n.t('admin.products_page.columns.tax_category')
+    }.freeze
+
     def index
       fetch_products
       render "index", locals: { producers:, categories:, tax_category_options:, flash: }
@@ -84,8 +94,8 @@ module Admin
         @producer_options = producers
         @category_options = categories
         @tax_category_options = tax_category_options
-      rescue ActiveRecord::ActiveRecordError => _e
-        flash.now[:error] = t('.error')
+      rescue ActiveRecord::ActiveRecordError => e
+        flash.now[:error] = clone_error_message(e)
         status = :unprocessable_entity
         @product_index = "-1" # Create a unique enough index
       end
@@ -209,6 +219,18 @@ module Admin
       params.permit(products: ::PermittedAttributes::Product.attributes)
         .to_h.with_indifferent_access
     end
+
+    def clone_error_message(error)
+      case error
+      when ActiveRecord::RecordInvalid
+        invalid_field_names = error.record.errors.attribute_names
+          .map{ |field_name| VIEW_FIELD_NAME_MAPPER[field_name] }.join(', ')
+
+        t('.invalid_fields_error', invalid_field_names:)
+      else
+        t('.error')
+      end
+    end
   end
 end
 # rubocop:enable Metrics/ClassLength

config/locales/en.yml

@@ -937,6 +937,7 @@ en:
       clone:
         success: Successfully cloned the product
         error: Unable to clone the product
+        invalid_fields_error: "Product being cloned has invalid %{invalid_field_names}"
     product_import:
       title: Product Import
       file_not_found: File not found or could not be opened

spec/system/admin/products_v3/actions_spec.rb

@@ -269,7 +269,7 @@ RSpec.describe 'As an enterprise user, I can manage my products' do
 
           click_product_clone "Apples"
 
-          expect(page).to have_content "Unable to clone the product"
+          expect(page).to have_content "Product being cloned has invalid Unit scale"
 
           within "table.products" do
             # Products does not include the cloned product.