In Django 2.0 foreign key relations must have the parameter on_delete set: https://docs.djangoproject.com/en/2.0/releases/2.0/#features-removed-in-2-0
This is not the case for the parent field of the ThreadedComment model. To reflect the behaviour in Django 1.11, it would have to set to models.CASCADE
In Django 2.0 foreign key relations must have the parameter
on_delete
set: https://docs.djangoproject.com/en/2.0/releases/2.0/#features-removed-in-2-0 This is not the case for the parent field of theThreadedComment
model. To reflect the behaviour in Django 1.11, it would have to set tomodels.CASCADE