Merge pull request #1535 from MetaModels/hotfix/fix_generate_widget_for_internal_attributes

Fix generate widget for internals attributes

Author: zonky2

src/CoreBundle/EventListener/DcGeneral/DefinitionBuilder/PropertyDefinitionBuilder.php

@@ -27,6 +27,7 @@
 use ContaoCommunityAlliance\DcGeneral\DataDefinition\Definition\Properties\PropertyInterface;
 use ContaoCommunityAlliance\DcGeneral\DataDefinition\Definition\PropertiesDefinitionInterface;
 use MetaModels\Attribute\IAttribute;
+use MetaModels\Attribute\IInternal;
 use MetaModels\Attribute\ITranslated;
 use MetaModels\DcGeneral\DataDefinition\IMetaModelDataDefinition;
 use MetaModels\DcGeneral\Events\MetaModel\BuildAttributeEvent;
@@ -122,7 +123,7 @@ protected function build(IMetaModelDataDefinition $container)
         }
 
         foreach ($metaModel->getAttributes() as $attribute) {
-            if (!isset($properties[$attribute->get('id')])) {
+            if ($attribute instanceof IInternal || !isset($properties[$attribute->get('id')])) {
                 continue;
             }
             $this->buildProperty(