On 14/07/2014 9:23 AM, Aeh. ABID wrote:
i'm bit confused here, shouldn't ovverride delete() instead of save() ?
and how to retrieve selected items ?
Not really. You don't want to delete anything. You want to break a link.
Making the foreign key field null will do that.
It sounds like you might want a many to many relationship between A and
AB and another one between B and AB.
In that case, you actually delete the link record not the A nor the AB
record.
That makes AB.A_id and AB.B_id redundant. The only fields you need in AB
are field_1 and field_2.
So create a table A_AB and another one B_AB. A_AB needs a foreign key to
A and also a foreign key to AB. In addition, A needs a ManyToManyField
pointing to AB (or AB needs one to A) using the "through" table A_AB. Do
likewise between B and AB.
https://docs.djangoproject.com/en/1.6/ref/models/fields/#manytomanyfield
Mike
On Sunday, July 13, 2014 7:48:05 PM UTC+1, Aeh. ABID wrote:
I Have a model AB that holds two foreign keys A_id and B_id.
|class AB(models.Model):
A_id= models.ForeignKey('A')
B_id= models.ForeignKey('B')
field_1= models.CharField(max_length=200, blank=True)
field_2= models.CharField(max_length=200, blank=True)|
When editing A or B, AB items are edited inlines, what I want to
achieve is that when editing let's say B I want to keep the selected
AB items and set the foreign key B_id to null instead of deleting them.
thanks for any hint
http://stackoverflow.com/q/24726046/288387?sem=2
<http://stackoverflow.com/q/24726046/288387?sem=2>
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