Refactor: with form builder

app/helpers/bulk_form_builder.rb

@@ -0,0 +1,13 @@
+# frozen_string_literal: true
+
+class BulkFormBuilder < ActionView::Helpers::FormBuilder
+  def text_field(field, **opts)
+    # Mark field if it is changed (unsaved)
+    changed_method = "#{field}_changed?"
+    if object.respond_to?(changed_method) && object.public_send(changed_method)
+      opts[:class] = "#{opts[:class]} changed".strip
+    end
+
+    super(field, **opts)
+  end
+end

app/views/admin/products_v3/_table.html.haml

@@ -1,4 +1,5 @@
 = form_with url: bulk_update_admin_products_path, method: :patch, id: "products-form",
+            builder: BulkFormBuilder,
             html: {'data-reflex-serialize-form': true, 'data-reflex': 'submit->products#bulk_update',
                    'data-controller': "bulk-form", 'data-bulk-form-disable-selector-value': "#sort,#filters"} do |form|
   %fieldset.form-actions.hidden{ 'data-bulk-form-target': "actions" }
@@ -40,10 +41,10 @@
           %tr
             %td.field.align-left.header
               = product_form.hidden_field :id
-              = product_form.text_field :name, 'aria-label': t('admin.products_page.columns.name'), class: (product_form.object.name_changed? ? 'changed' : nil)
+              = product_form.text_field :name, 'aria-label': t('admin.products_page.columns.name')
               = error_message_on product, :name
             %td.field
-              = product_form.text_field :sku, 'aria-label': t('admin.products_page.columns.sku'), class: (product_form.object.sku_changed? ? 'changed' : nil)
+              = product_form.text_field :sku, 'aria-label': t('admin.products_page.columns.sku')
               = error_message_on product, :sku
             %td.align-right
               .content
@@ -69,15 +70,15 @@
               %tr.condensed
                 %td.field
                   = variant_form.hidden_field :id
-                  = variant_form.text_field :display_name, 'aria-label': t('admin.products_page.columns.name'), placeholder: product.name, class: (variant_form.object.display_name_changed? ? 'changed' : nil)
+                  = variant_form.text_field :display_name, 'aria-label': t('admin.products_page.columns.name'), placeholder: product.name
                   = error_message_on variant, :display_name
                 %td.field
-                  = variant_form.text_field :sku, 'aria-label': t('admin.products_page.columns.sku'), class: (variant_form.object.sku_changed? ? 'changed' : nil)
+                  = variant_form.text_field :sku, 'aria-label': t('admin.products_page.columns.sku')
                   = error_message_on variant, :sku
                 %td.align-right
                   .content= variant.unit_to_display
                 %td.field
-                  = variant_form.text_field :price, 'aria-label': t('admin.products_page.columns.price'),  class: (variant_form.object.price_changed? ? 'changed' : nil), value: number_to_currency(variant.price, unit: '')&.strip # TODO: add a spec to prove that this formatting is necessary. If so, it should be in a shared form helper for currency inputs
+                  = variant_form.text_field :price, 'aria-label': t('admin.products_page.columns.price'), value: number_to_currency(variant.price, unit: '')&.strip # TODO: add a spec to prove that this formatting is necessary. If so, it should be in a shared form helper for currency inputs
                   = error_message_on variant, :price
                 %td.align-right
                   .content= variant.on_hand || 0 #TODO: spec for this according to requirements.

spec/helpers/bulk_form_builder_spec.rb

@@ -0,0 +1,26 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+class TestHelper < ActionView::Base; end
+
+describe BulkFormBuilder do
+  describe '#text_field' do
+    let(:product) { create(:product) }
+    let(:form) { BulkFormBuilder.new(:product, product, self, {}) }
+
+    it { expect(form.text_field(:name)).to_not include "changed" }
+
+    context "attribute has been changed" do
+      before { product.assign_attributes name: "updated name" }
+
+      it { expect(form.text_field(:name)).to include "changed" }
+
+      context "and saved" do
+        before { product.save }
+
+        it { expect(form.text_field(:name)).to_not include "changed" }
+      end
+    end
+  end
+end