Am Samstag 14 März 2009 22:13:39 schrieb Christoph Wegscheider:
> Hi,
> I want to upload photos to directories structured by the album primary
> key. I have the following model:
>
> class Photo(models.Model):
> album = models.ForeignKey(Album)
> img = models.FileField(upload_to='albums/images/' + str(album.pk)
> + '/', blank=True)
>
> The str(album.pk) part is not working. As I understand it I can't use
> the album as an object of type album here like in views/templates (I'm
> new to python and haven't fully understand the mechanisms working
> underneath, but I guess the class declaration is processed earlier,
> when the information is not yet available).
>
> Nevertheless, I'm sure I can use the foreign key id for albums somehow
> as part of the path, but how?
> Any hint will be appreciated.
Hi Christoph,
since the FileField refactoring you can define a callable for upload_to.
Basically that's a function which knows about the instance and filename and
returns the full image path. Like this:
from django.conf import settings
def get_img_storage_path(instance, filename):
return '%salbums/images/%s/' % (settings.MEDIA_ROOT, instance.album.pk)
class Photo(models.Model):
img = models.FileField(upload_to=get_img_storage_path, blank=True)
Also see:
http://docs.djangoproject.com/en/dev/ref/models/fields/#django.db.models.FileField.upload_to
Best Regards,
Dirk Eschler
--
Dirk Eschler <dirk.esch...@gmx.net>
http://www.krusader.org
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