CODEWITHSUNDEEP
pythondjangodjango-modelsdjango-authentication
pnovotnak
pnovotnak

Reputation: 4591

Django Composite Username

Is it possible to use two or more fields configured to be unique together as a username in Django? Is this a dumb idea?

Eg;

class MyUser(AbstractBaseUser, PermissionsMixin):
    user_id = models.CharField(max_length=255)
    backend = models.CharField(max_length=255)
    username = backend + user_id  # ???

    class Meta:
        unique_together = (
            ('user_id', 'backend')
        )

Upvotes: 0

Views: 158

Answers (1)

user2390182
user2390182

Reputation: 73498

You could make 'username' a property. But since I assume you want it to be the USERNAME_FIELD and be able to query the db with it, I'd do something like:

class MyUser(AbstractBaseUser, PermissionsMixin):
    user_id = models.CharField(max_length=255)
    backend = models.CharField(max_length=255)
    username = models.CharField(max_length=510, editable=False)

    class Meta:
        unique_together = (
            ('user_id', 'backend')
        )

    def save(self, *args, **kwargs):
        self.username = self.backend + self.user_id
        super(MyUser, self).save(*args, **kwargs)

Upvotes: 1

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