Unique Constraint Failed: Auth_user.username

I'm trying to store the First name and last name straight from the Facebook API to a User Auth model (which is extended with FacebookProfile model, containing webpull, id and year_

Solution 1:

If you use the default authenticate function not providing a password should always (?) fail, which means that

has_account = authenticate(first_name = first_name, last_name = last_name)

always will be None.

But the main problem is that you do not set a username for the new User, only first_name and last_name. This will work once, but after one User with an empty username was created the next attempt will fail, as Users need an unique username. So: Add a username!

Besides that, I think that

user = facebook_user.save()

does not assign the User to "user" but the Form. You should use facebook_user.instance.