LazyUser `get_user_class` returns string, not class

[aschriner]

The call to rel.to on LazyUser user field returns a string "auth.User", not the class.

@classmethod
def get_user_class(cls):
    return cls._meta.get_field('user').rel.to

This results in AttributeError: 'str' object has no attribute '_meta' when I try to do LazyUser.objects.create_lazy_user()

replacing the definition of the User foriegnkey

    user = models.ForeignKey(
        getattr(settings, 'LAZYSIGNUP_USER_MODEL', 'auth.User'),
        unique=True)

with

    user = models.ForeignKey(
        user_model,
        unique=True)

where

USER_MODEL = getattr(settings, 'LAZYSIGNUP_USER_MODEL', 'auth.User')
user_model = models.get_model(*USER_MODEL.split("."))

fixes the issue for me. I'm wondering why this is happening at all though?? Usually rel.to does in fact return a class.

[aschriner]

This is strange - if I import my own app's model (which has an FK to user using the string reference method) BEFORE importing LazyUser, then rel.to returns a class.

>>> from lazysignup.models import LazyUser
>>> LazyUser.user.field.rel.to
'auth.User'
>>> from supporters.models import Profile
>>> Profile.user.field.rel.to
<class 'django.contrib.auth.models.User'>
>>> LazyUser.user.field.rel.to
<class 'django.contrib.auth.models.User'>

and the only thing that supporters.models is importing is from django.db import models