models.py

from django.conf import settings
from django.db import models
from django.utils.translation import gettext_lazy

from greg.models import BaseModel, Person, Sponsor

class GregUserProfile(BaseModel):
    """Link the django user to a Person or Sponsor."""

    user = models.ForeignKey(settings.AUTH_USER_MODEL, on_delete=models.CASCADE)
    person = models.ForeignKey(
        Person,
        on_delete=models.CASCADE,
        related_name='user_profiles',
        blank=True,
        null=True
        )
    sponsor = models.ForeignKey(
        Sponsor,
        on_delete=models.CASCADE,
        related_name='user_profiles',
        blank=True,
        null=True
        )
    userid_feide = models.CharField(gettext_lazy("userid-feide"), max_length=150)