Getting “Permission denied” page in the admin, whi

Question

I've got some issue with user permissions in Django. I added some permissions for the Magasin model as shown below:

add_magasin=Permission.objects.get(codename="add_magasin")
change_magasin=Permission.objects.get(codename="change_magasin")
delete_magasin=Permission.objects.get(codename="delete_magasin")
user.user_permissions.add(add_magasin)
user.user_permissions.add(change_magasin)
user.user_permissions.add(delete_magasin)
user.save()

then when I check the permission I get:

In [100]: user.has_perm(delete_magasin)
Out[100]: False

In [101]: user.has_perm(add_magasin)
Out[101]: False

In [102]: user.has_perm(change_magasin)
Out[102]: False

and in the admin, connected with the same user, I can add a Magasin instance, but not delete one ("Permission denied"). I can't even delete a Magasin instance with the superuser.

I'm using Django 1.3 and I'm not using any external permission-related app...

EDIT: sql queries

mysql> select * from django_content_type;
+----+-----------------------+--------------+------------------+
| id | name                  | app_label    | model            |
+----+-----------------------+--------------+------------------+
***more stuff***
|  9 | magasin               | securite_v2  | magasin          |
***more stuff***


mysql> select * from auth_permission;
+----+----------------------------------+-----------------+-------------------------+
| id | name                             | content_type_id | codename                |
+----+----------------------------------+-----------------+-------------------------+
***more stuff***
| 25 | Can add magasin                  |               9 | add_magasin             |
| 26 | Can change magasin               |               9 | change_magasin          |
| 27 | Can delete magasin               |               9 | delete_magasin          |
***more stuff***


mysql> select * from auth_user where id=135;
+-----+---------------+------------+-----------+-------------------------------+-----------------------------------------------------+----------+-----------+--------------+---------------------+---------------------+
| id  | username      | first_name | last_name | email                         | password                                            | is_staff | is_active | is_superuser | last_login          | date_joined         |
+-----+---------------+------------+-----------+-------------------------------+-----------------------------------------------------+----------+-----------+--------------+---------------------+---------------------+
| 135 | admingrandest |            |           | [e-mail] | sha1$14f21$02a50f37be16f27aba3f677618b663edfb0ce5a7 |        1 |         1 |            0 | 2012-06-25 11:16:35 | 2012-06-22 16:42:46 |
+-----+---------------+------------+-----------+-------------------------------+-----------------------------------------------------+----------+-----------+--------------+---------------------+---------------------+


mysql> select * from auth_user_user_permissions;
+----+---------+---------------+
| id | user_id | permission_id |
+----+---------+---------------+
|  1 |     135 |            25 |
|  2 |     135 |            26 |
|  3 |     135 |            27 |
***more stuff***

What could be wrong?

Answer 1

The first argument of User.has_perm() have to be a string in <app label>.<permission codename> format. In you're code you're passing Permission instance as first argument, which get's evaluated to <app_label> | <content_type> | <name>, so has_perm will always return False.

Instead use user.has_perm("<yourapp>.delete_magasin")

Answer 2

It seems it has to do with file permissions, not Django user permissions.