      location1 = models.CharField(max_length=1000, default='location1')
  
  
  class Request(models.Model):
      profile = models.ForeignKey(Profile, null=True, blank=True)
      location = models.ForeignKey(Location)
      items = models.ManyToManyField(Item)
  
      request1 = models.CharField(default='request1', max_length=1000)
      request2 = models.CharField(default='request2', max_length=1000)
      request3 = models.CharField(default='request3', max_length=1000)
 
</s> remove     location = models.ForeignKey(Location)
 </s> add     location = models.ForeignKey(Location, models.CASCADE) </s> remove     chef = models.ForeignKey(Chef, null=True, blank=True)
 </s> add     chef = models.ForeignKey(Chef, models.SET_NULL, null=True, blank=True) </s> remove     profile = models.ForeignKey(UserProfile, to_field="user")
 </s> add     profile = models.ForeignKey(UserProfile, models.CASCADE, to_field="user") </s> remove     owner = models.ForeignKey(User, null=True, blank=True, on_delete=models.SET_NULL)
 </s> add     owner = models.ForeignKey(User, models.SET_NULL, null=True, blank=True) </s> remove     location = models.ForeignKey(AugmentedLocation)
 </s> add     location = models.ForeignKey(AugmentedLocation, models.CASCADE)
    profile = models.ForeignKey(Profile, models.SET_NULL, null=True, blank=True)
    location = models.ForeignKey(Location, models.CASCADE)
      location1 = models.CharField(max_length=1000, default='location1')
  
  
  class Request(models.Model):
    profile = models.ForeignKey(Profile, models.SET_NULL, null=True, blank=True)
    location = models.ForeignKey(Location, models.CASCADE)
    profile = models.ForeignKey(Profile, models.SET_NULL, null=True, blank=True)
    location = models.ForeignKey(Location, models.CASCADE)
      items = models.ManyToManyField(Item)
  
      request1 = models.CharField(default='request1', max_length=1000)
      request2 = models.CharField(default='request2', max_length=1000)
      request3 = models.CharField(default='request3', max_length=1000)
keep keep keep keep replace replace keep keep keep keep keep
 Fixed #21127 -- Started deprecation toward requiring on_delete for ForeignKey/OneToOneField 
tests/defer_regress/models.py