Fix update_main_character_model() bug

allianceauth/authentication/admin.py

@@ -241,6 +241,22 @@ class MainAllianceFilter(admin.SimpleListFilter):
                         self.value())
                 
 
+def update_main_character_model(modeladmin, request, queryset):    
+    tasks_count = 0
+    for obj in queryset:
+        if obj.profile.main_character:
+            update_character.delay(obj.profile.main_character.character_id)
+            tasks_count += 1
+
+    modeladmin.message_user(
+        request, 
+        'Update from ESI started for {} characters'.format(tasks_count)
+    )
+
+update_main_character_model.short_description = \
+    'Update main character model from ESI'
+
+
 class UserAdmin(BaseUserAdmin):
     """Extending Django's UserAdmin model
     
@@ -272,28 +288,13 @@ class UserAdmin(BaseUserAdmin):
             else:    
                 return queryset.filter(groups__pk=self.value())
 
-    def update_main_character_model(self, request, queryset):    
-        tasks_count = 0
-        for obj in queryset:
-            if obj.profile.main_character:
-                update_character.delay(obj.profile.main_character.character_id)
-                tasks_count += 1
-
-        self.message_user(
-            request, 
-            'Update from ESI started for {} characters'.format(tasks_count)
-        )
-
-    update_main_character_model.short_description = \
-        'Update main character model from ESI'
-
     def get_actions(self, request):
         actions = super(BaseUserAdmin, self).get_actions(request)
 
-        actions[self.update_main_character_model.__name__] = (
-            self.update_main_character_model, 
-            self.update_main_character_model.__name__, 
-            self.update_main_character_model.short_description
+        actions[update_main_character_model.__name__] = (
+            update_main_character_model, 
+            update_main_character_model.__name__, 
+            update_main_character_model.short_description
         )
 
         for hook in get_hooks('services_hook'):

allianceauth/authentication/tests/test_admin.py

@@ -25,7 +25,8 @@ from ..admin import (
     UserAdmin,     
     user_main_organization,
     user_profile_pic, 
-    user_username,    
+    user_username,
+    update_main_character_model
 )
 from . import get_admin_change_view_url
 
@@ -409,8 +410,8 @@ class TestUserAdmin(TestCase):
         self, mock_task, mock_message_user
     ):
         users_qs = User.objects.filter(pk__in=[self.user_1.pk, self.user_2.pk])
-        self.modeladmin.update_main_character_model(
-            MockRequest(self.user_1), users_qs
+        update_main_character_model(
+            self.modeladmin, MockRequest(self.user_1), users_qs
         )
         self.assertEqual(mock_task.delay.call_count, 2)
         self.assertTrue(mock_message_user.called)