Ticket #7865: admin_site_add_to_inlines.diff

django/contrib/admin/sites.py

@@ -94 +94 @@
                 raise NotRegistered('The model %s is not registered' % model.__name__)
             del self._registry[model]
 
+    def add_to_inlines(self, target_model, inline_admin_classes):
+        if target_model not in self._registry:
+            return False
+        if not hasattr(inline_admin_classes, '__iter__'):
+            inline_admin_classes = [inline_admin_classes]
+        for cls in inline_admin_classes:
+            inline_instance = cls(self._registry[target_model].model, self._registry[target_model].admin_site)
+            if inline_instance not in self._registry[target_model].inline_instances:
+                self._registry[target_model].inline_instances.append(inline_instance)
+        return True
+
     def has_permission(self, request):
         """
         Returns True if the given HttpRequest has permission to view