The user needs to be able to manually position the photos in the gallery (using drag and drop, for example). A photo can exist in multiple galleries, which is why the join model GalleryPhoto is required (and this is where the position gets stored).
On Feb 27, 7:36 pm, Prabhu <[email protected]> wrote: > What is wrong with gallery.photos.all().order_by('name') ? > > On Feb 27, 4:49 pm, Kyle Fox <[email protected]> wrote: > > > > > I'm wondering if it's possible to apply ordering to a ManyToMany > > relationship by using a `position` attribute on the join model. A > > classic example (photo gallery) is probably the best way to illustrate > > this: > > > class Photo(models.Model): > > image = models.ImageField(upload_to="photos") > > > class Gallery(models.Model): > > name = models.CharField(max_length=100) > > photos = models.ManyToManyField(Photo, through='GalleryPhoto') > > > class GalleryPhoto(models.Model): > > gallery = models.ForeignKey(Gallery) > > photo = models.ForeignKey(Photo) > > position = models.IntegerField(default=0) > > > class Meta: > > ordering = ('position',) > > > (Also athttp://dpaste.com/hold/165618/) > > > I want to attach photos with a gallery, like this: > > > >>> GalleryPhoto.objects.create(photo=photo1, gallery=some_gallery, > > >>> position=1) > > >>> GalleryPhoto.objects.create(photo=photo2, gallery=some_gallery, > > >>> position=2) > > > And then have the photos retrievable through the gallery *according to > > the position attribute* on the GalleryPhoto, like so: > > > >>> gallery.photos.all() > > > [photo1, photo2] > > > The simplest fix would be to add create a `get_photos` method on the > > Gallery which does a query for it's photos, but I'd rather stick to > > straight Django models if at all possible. > > > Thanks! -- You received this message because you are subscribed to the Google Groups "Django users" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/django-users?hl=en.
