  model class, so use the :attr:`~Field.verbose_name` keyword argument::
  
      poll = models.ForeignKey(Poll, verbose_name="the related poll")
      sites = models.ManyToManyField(Site, verbose_name="list of sites")
      place = models.OneToOneField(Place, verbose_name="related place")
  
  The convention is not to capitalize the first letter of the
  :attr:`~Field.verbose_name`. Django will automatically capitalize the first
  letter where it needs to.
  
 
</s> remove     poll = models.ForeignKey(Poll, verbose_name="the related poll")
 </s> add     poll = models.ForeignKey(
        Poll,
        on_delete=models.CASCADE,
        verbose_name="the related poll",
    ) </s> remove     parent = models.OneToOneField(Place)
 </s> add     parent = models.OneToOneField(Place, models.CASCADE) </s> remove     honeycomb = models.ForeignKey(Honeycomb)
 </s> add     honeycomb = models.ForeignKey(Honeycomb, models.CASCADE) </s> remove     parent = models.OneToOneField(Place, parent_link=True)
 </s> add     parent = models.OneToOneField(Place, models.CASCADE, parent_link=True) </s> remove model was altered to ``blog = ForeignKey(Blog, related_name='entries')``, the
above example code would look like this::
 </s> add model was altered to ``blog = ForeignKey(Blog, on_delete=models.CASCADE,
related_name='entries')``, the above example code would look like this::
    place = models.OneToOneField(
        Place,
        on_delete=models.CASCADE,
        verbose_name="related place",
    )
  model class, so use the :attr:`~Field.verbose_name` keyword argument::
  
      poll = models.ForeignKey(Poll, verbose_name="the related poll")
      sites = models.ManyToManyField(Site, verbose_name="list of sites")
    place = models.OneToOneField(
        Place,
        on_delete=models.CASCADE,
        verbose_name="related place",
    )
  
  The convention is not to capitalize the first letter of the
  :attr:`~Field.verbose_name`. Django will automatically capitalize the first
  letter where it needs to.
  
keep keep keep keep replace keep keep keep keep keep
 Fixed #21127 -- Started deprecation toward requiring on_delete for ForeignKey/OneToOneField 
docs/topics/db/models.txt