#2288: Provide an equivalent for 'ON DELETE' and friends
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Reporter: ubernostrum | Owner: nobody
Status: new | Component: Core framework
Version: | Resolution:
Keywords: | Stage: Design decision needed
Has_patch: 0 | Needs_docs: 0
Needs_tests: 0 | Needs_better_patch: 0
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Comment (by anonymous):
Perhaps a temporal solution was to provide a "blank" method that blanks
all the relations of one object to the others: For example, if we have:
class Person(model.Models):
firstname = models.CharField(max_length=100)
lastname = models.CharField(max_length=100)
car = models.ManyToManyField('Car')
class Car(models.Models):
name = models.CharField(max_length=100)
number_plate = models.IntegerField()
one_car = Car(name="Porche", number_plate="COOL")
one_car.save()
this_is_me = Person(firstname="John", lastname="Doe", car=one_car)
this_is_me.save()
Now I have not this car (I sell it but the car exists). I just want to
delete my relation to this car. It could be done by:
this_is_me.Car_set.blank(one_car) # This drops one_car with the lists of
cars I have
this_is_me.Car_set.all.blank() # This is equivalent that I have no cars
(but cars exist)
I suppose that this syntax is not good at all, but the main idea as you
understand I say you: one method that deletes the relations between
objects and not the objects itselfs.
Thanks,
Xan.
--
Ticket URL: <http://code.djangoproject.com/ticket/2288#comment:10>
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