# Access Control Lists¶

## ACL versus Django Permissions¶

Currently we use the is_superuser flag in the User model to indicate that a user can access the admin site.

Outside of that we use the access.models.GroupUser to define what access groups a user is a part of.

## How permissions work¶

Permissions that you can use as filters can be either explicit or general.

For example Admin:EditAddons means only someone with that permission will validate.

If you simply require that a user has some permission in the Admin group you can use Admin:%. The % means “any.”

Similarly a user might be in a group that has explicit or general permissions. They may have Admin:EditAddons which means they can see things with that same permission, or things that require Admin:%.

If a user has a wildcard, they will have more permissions. For example, Admin:* means they have permission to see anything that begins with Admin:.

The notion of a superuser has a permission of *:* and therefore they can see everything.