Default manager methods should allow _id style arguments for foreign keys

[Simon Litchfield <simon@…>]

Instead of being required to do this --

current_user = User.objects.get(id=47)
profile = Profile.objects.get(name='Example', user=current_user)

Since I can use profile.user_id, I would expect to be able to do this --

profile = Profile.objects.get(name='Example', user_id=47)

Both in terms of consistency *and* performance.

Another example gotcha, which obviously makes sense once you know it but needn't be the case if filters etc supported _id style arguments --

pa, created = ProfileAttrib.objects.get_or_create(profile=self.profile,
                                                  attrib__id=attrib_id,
                                                  value=value,
                                                  defaults={'attrib_id':attrib_id}
                                                  )

Why not, just --

pa, created = ProfileAttrib.objects.get_or_create(profile=self.profile,
                                                  attrib_id=attrib_id,
                                                  value=value,
                                                  )

[James Bennett]

Duplicate of #5535.