import django
from django.db.models.fields.related import ForeignObject

django_version = django.VERSION

is_django2 = (django_version >= (2, 0))


def compat_contribute_to_class(self, cls, name, virtual_only=False):
    if is_django2:
        super(ForeignObject, self).contribute_to_class(
            cls, name, private_only=virtual_only)
    else:
        super(ForeignObject, self).contribute_to_class(
            cls, name, virtual_only=virtual_only)