          ordering = ('speed', 'load')
  
  
  class SwallowOneToOne(models.Model):
      swallow = models.OneToOneField(Swallow)
  
  
  class UnorderedObject(models.Model):
      """
      Model without any defined `Meta.ordering`.
 
</s> remove     novel = models.ForeignKey(Novel)
 </s> add     novel = models.ForeignKey(Novel, models.CASCADE) </s> remove     chapter = models.ForeignKey(Chapter, on_delete=models.PROTECT)
 </s> add     chapter = models.ForeignKey(Chapter, models.PROTECT) </s> remove     ingredient = models.ForeignKey(Ingredient, to_field='iname')
    recipe = models.ForeignKey(Recipe, to_field='rname')
 </s> add     ingredient = models.ForeignKey(Ingredient, models.CASCADE, to_field='iname')
    recipe = models.ForeignKey(Recipe, models.CASCADE, to_field='rname') </s> remove     parent = models.ForeignKey(ParentWithDependentChildren)
 </s> add     parent = models.ForeignKey(ParentWithDependentChildren, models.CASCADE) </s> remove     b = models.ForeignKey(B)
 </s> add     b = models.ForeignKey(B, models.CASCADE)
    swallow = models.OneToOneField(Swallow, models.CASCADE)
          ordering = ('speed', 'load')
  
  
  class SwallowOneToOne(models.Model):
    swallow = models.OneToOneField(Swallow, models.CASCADE)
  
  
  class UnorderedObject(models.Model):
      """
      Model without any defined `Meta.ordering`.
keep keep keep keep replace keep keep keep keep keep
 Fixed #21127 -- Started deprecation toward requiring on_delete for ForeignKey/OneToOneField 
tests/admin_changelist/models.py