SK/FB work

schema/ContactCategory.entityType.php

@@ -46,14 +46,22 @@ return [
     'category_definition_id' => [
       'title' => E::ts('Category Definition'),
       'sql_type' => 'int unsigned',
-      'required' => TRUE,
-      'default' => 0,
-      'input_type' => 'EntityRef',
+      'required' => FALSE,
+      'default' => NULL,
+      // 'input_type' => 'EntityRef',
+      'input_type' => 'Select',
       'entity_reference' => [
         'entity' => 'ContactCategoryDefinition',
         'key' => 'id',
         'on_delete' => 'CASCADE',
       ],
+      'pseudoconstant' => [
+        'prefetch' => TRUE,
+        'table' => 'civicrm_contact_category_definition',
+        'key_column' => 'id',
+        'label_column' => 'label',
+        'name_column' => 'id',
+      ],
     ],
     'next_category' => [
       'title' => E::ts('Next Category'),

schema/ContactCategoryDefinition.entityType.php

@@ -10,6 +10,8 @@ return [
     'title_plural' => E::ts('Contact Category Definitions'),
     'description' => E::ts('Holds definition of a "Contact category"'),
     'log' => FALSE,
+    'label_field' => 'label',
+    'icon' => 'fa-tags',
   ],
   'getFields' => fn() => [
     'id' => [
@@ -42,6 +44,7 @@ return [
           // 'name' => 'title',
           'search' => E::ts('Search Kit search'),
           'group' => E::ts('Group'),
+          'default' => E::ts('Default category'),
           // Future:
           // 'sql' => E::ts('SQL template'),
         ],