Fixes #3739 - Core Workflow: Show hidden attributes on group selection (ticket edit).

app/assets/javascripts/app/controllers/_application_controller/form.coffee

@@ -92,7 +92,7 @@ class App.ControllerForm extends App.Controller
     if @model.attributesGet
       attributesClean = @model.attributesGet(@screen)
     else
-      attributesClean = App.Model.attributesGet(@screen, @model.configure_attributes)
+      attributesClean = App.Model.attributesGet(@screen, @model.configure_attributes, undefined, @model.className)
 
     for attributeName, attribute of attributesClean
 

app/assets/javascripts/app/controllers/ticket_zoom/sidebar_ticket.coffee

@@ -38,7 +38,7 @@ class Edit extends App.ControllerObserver
     else
       @controllerFormSidebarTicket = new App.ControllerForm(
         elReplace:      @el
-        model:          { configure_attributes: @formMeta.configure_attributes || App.Ticket.configure_attributes }
+        model:          { className: 'Ticket', configure_attributes: @formMeta.configure_attributes || App.Ticket.configure_attributes }
         screen:         'edit'
         handlersConfig: handlers
         filter:         @formMeta.filter

app/assets/javascripts/app/models/_application_model.coffee

@@ -211,9 +211,12 @@ set new attributes of model (remove already available attributes)
 
   ###
 
-  @attributesGet: (screen = undefined, attributes = false, noDefaultAttributes = false) ->
+  @attributesGet: (screen = undefined, attributes = false, noDefaultAttributes = false, className = undefined) ->
+    if !className
+      className = @.className
+
     if !attributes
-      attributes = clone(App[@.className].configure_attributes, true)
+      attributes = clone(App[className].configure_attributes, true)
     else
       attributes = clone(attributes, true)
 
@@ -224,7 +227,7 @@ set new attributes of model (remove already available attributes)
     attributesNew = {}
     if screen
       for attribute in attributes
-        if attribute && attribute.screen && attribute.screen[screen] && (!_.isEmpty(attribute.screen[screen]) && (attribute.screen[screen].shown is true || attribute.screen[screen].shown is undefined || App.FormHandlerCoreWorkflow.checkScreen(@.className, screen)))
+        if attribute && attribute.screen && attribute.screen[screen] && (!_.isEmpty(attribute.screen[screen]) && (attribute.screen[screen].shown is true || attribute.screen[screen].shown is undefined || App.FormHandlerCoreWorkflow.checkScreen(className, screen)))
           for item, value of attribute.screen[screen]
             attribute[item] = value
           attributesNew[ attribute.name ] = attribute

spec/system/ticket/zoom_spec.rb

@@ -1908,4 +1908,53 @@ RSpec.describe 'Ticket zoom', type: :system do
       end
     end
   end
+
+  describe 'Core Workflow: Show hidden attributes on group selection (ticket edit) #3739', authenticated_as: :authenticate do
+    let!(:ticket) { create(:ticket, group: Group.find_by(name: 'Users')) }
+    let(:field_name) { SecureRandom.uuid }
+    let(:field) do
+      create :object_manager_attribute_text, name: field_name, display: field_name, screens: {
+        'edit' => {
+          'ticket.agent' => {
+            'shown'    => false,
+            'required' => false,
+          }
+        }
+      }
+      ObjectManager::Attribute.migration_execute
+    end
+
+    before do
+      visit "#ticket/zoom/#{ticket.id}"
+    end
+
+    context 'when field visible' do
+      let(:workflow) do
+        create(:core_workflow,
+               object:  'Ticket',
+               perform: { "ticket.#{field_name}" => { 'operator' => 'show', 'show' => 'true' } })
+      end
+
+      def authenticate
+        field
+        workflow
+        true
+      end
+
+      it 'does show up the field' do
+        expect(page).to have_css("div[data-attribute-name='#{field_name}']")
+      end
+    end
+
+    context 'when field hidden' do
+      def authenticate
+        field
+        true
+      end
+
+      it 'does not show the field' do
+        expect(page).to have_css("div[data-attribute-name='#{field_name}'].is-hidden", visible: :hidden)
+      end
+    end
+  end
 end