Question

I need to avoid cascading deletes on a foreign key, but it’s a OneToOneField(), like:

class MyModel(models.Model):
    def delete(self):
        self.mysubmodel.clear()  # Breaks because self.cartitem is not a QuerySet.
        super(MyModel, self).delete()

class MySubModel(models.Model):
    mymodel = models.OneToOneField(MyModel)

This version would work (but I can’t use this version):

class MyModel(models.Model):
    def delete(self):
        self.mysubmodel_set.clear()  # Works because self.mysubmodel_set is a QuerySet.
        super(MyModel, self).delete()

class MySubModel(models.Model):
    mymodel = models.ForeignKey(MyModel)

Answer 1

Setting the field to None in the delete method should work:

self.mysubmodel = None