Add count column to admin group list - Refs #1181

modules/backend/lang/en/lang.php

@@ -110,7 +110,8 @@ return [
             'list_title' => 'Manage Groups',
             'new' => 'New Administrator Group',
             'delete_confirm' => 'Do you really want to delete this administrator group?',
-            'return' => 'Return to the group list'
+            'return' => 'Return to the group list',
+            'users_count' => 'Users'
         ],
         'preferences' => [
             'not_authenticated' => 'There is no an authenticated user to load or save preferences for.'

modules/backend/models/UserGroup.php

@@ -26,7 +26,8 @@ class UserGroup extends GroupBase
      * @var array Relations
      */
     public $belongsToMany = [
-        'users' => ['Backend\Models\User', 'table' => 'backend_users_groups']
+        'users' => ['Backend\Models\User', 'table' => 'backend_users_groups'],
+        'users_count' => ['Backend\Models\User', 'table' => 'backend_users_groups', 'count' => true]
     ];
 
     public function afterCreate()

modules/backend/models/usergroup/columns.yaml

@@ -9,4 +9,10 @@ columns:
 
     description:
         label: backend::lang.user.group.description_field
-        searchable: yes
+        searchable: yes
+
+    users_count:
+        label: backend::lang.user.group.users_count
+        relation: users_count
+        valueFrom: count
+        default: 0