#11850: Intermediate model order not applied to related model
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Reporter: pielgrzym | Owner: nobody
Status: new | Milestone:
Component: Database layer (models, ORM) | Version: 1.1
Keywords: model orderin, many to many | Stage: Unreviewed
Has_patch: 0 |
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Hi,
Here is a slightly modified example from django m2m with intermediate
model docs (note the meta class with order in Membership model):
{{{
class Person(models.Model):
name = models.CharField(max_length=128)
def __unicode__(self):
return self.name
class Group(models.Model):
name = models.CharField(max_length=128)
members = models.ManyToManyField(Person, through='Membership')
def __unicode__(self):
return self.name
class Membership(models.Model):
person = models.ForeignKey(Person)
group = models.ForeignKey(Group)
date_joined = models.DateField()
invite_reason = models.CharField(max_length=64)
class Meta:
ordering = ('date_joined')
}}}
Now if we try to access the group members (as in django docs):
{{{
>>> beatles.members.all()
[<Person: Ringo Starr>, <Person: Paul McCartney>]
}}}
'''They are sorted with order of Person model, not intermediate model. You
have to manually assign order_by to achieve the desired effect:'''
{{{
>>> beatles.members.all().order_by('membership__date_joined')
}}}
It would be nice to be able to specify the intermediate order as default
order for ManyRelatedManager.
--
Ticket URL: <http://code.djangoproject.com/ticket/11850>
Django <http://code.djangoproject.com/>
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