Authenticate users in multiple database

[Evgeniy Makhmudov]

A problem occur while using several database (each contains users tables) and don't using managers. Process authentication in Django is avaiable only for users table in default database. My proposal is in small modification in original (1.4) code:

# django.contrib.auth.backends.py
# class ModelBackend(object)
# ... 

    def authenticate(self, username=None, password=None, database='default'):
        try:
            user = User.objects.using(database).get(username=username)
            if user.check_password(password):
                return user
        except User.DoesNotExist:
            return None

I don't tested this from global point of view, but in my app it is working.

[Jacob]

I think this is in "write your own backend" territory. It's fairly simple to subclass ModelBackend and provide your own authentication using whatever database you choose. Once you start doing "special things" with auth, you're almost certainly going to have to write a custom backend.

[Also, this mixes up what arguments authenticate() takes: it's supposed to be **credentials, but the database isn't exactly considered credentials, I think.]

[Evgeniy Makhmudov]

about first, ok. I understand.

about this:
[Also, this mixes up what arguments authenticate() takes: it's supposed to be **credentials, but the database isn't exactly considered credentials, I think.]

i don't understand, why it problem for authenticate()? Look, django.contrib.auth.authenticate takes **credentials and send it to backend, which by default alwsays the only 'django.contrib.auth.backends.ModelBackend'. This backend receive dictionary with needed username,password and if neccesseary database name, otherwise use predefault value 'default'. So, i can't see where is mixing?