python-social-auth and Django, replace UserSocialAuth with custom model

Question

I'm trying to integrate python-social-auth into an existent Django project.

I want to use an existent model for a user's social accounts, instead of UserSocialAuth (my DB already has data with it, as well as some custom fields).

Is there some setting for it?

My custom model looks like this:

class Channel(models.Model, DjangoUserMixin):
    PROVIDER_CHOICES = (
        ('twitter', 'Twitter'),
    )

    uid = models.CharField(max_length=255)
    user = models.ForeignKey(settings.AUTH_USER_MODEL, blank=True, null=True,
                             related_name='channels')

    provider = models.CharField(max_length=32, choices=PROVIDER_CHOICES)
    extra_data = JSONField()

    class Meta:
        unique_together = ('provider', 'uid')

    @classmethod
    def get_social_auth(cls, provider, uid):
        try:
            return cls.objects.select_related('user').get(provider=provider, uid=uid)
        except Channel.DoesNotExist:
            return None

    username_max_length = 255
    user_model = get_user_model()

Any ideas?

Answer 1

Solved by creating a custom Storage:

# channels/models.py
# ...

class CustomSocialStorage(DjangoStorage):
    """To replace UserSocialAuth model with Channel"""
    user = Channel

And registering it in the settings:

SOCIAL_AUTH_STORAGE = 'proj.channels.models.CustomSocialStorage'

For some reason this setting is documented only in the "Django" section of Python-social-auth's documentation, and not on the Settings page.