the upload_to attribute does not append MEDIA_URL automaticaly

[dantario@…]

the upload_to attribute on FileField didn't append MEDIA_URL setting automatically when submit a form from django admin

this is my field syntax from my model:
thumb = models.ImageField(upload_to='news')

[Karen Tracey]

upload_to is used as described here: ​http://docs.djangoproject.com/en/dev/ref/models/fields/#django.db.models.FileField.upload_to

That does not include appending MEDIA_URL to the name. Rather, MEDIA_ROOT is prepended to the upload_to value. This does work. If you are having trouble in this area the django-users mailing list or #django IRC channel would be a better place to ask for guidance, since really the basics of uploading files are really not broken in 1.2. When describing your problem it would be best to include all relevant settings (MEDIA_ROOT and MEDIA_URL) and more description of what exactly the problem you are observing is.

[Sam Thompson]

This is no longer true as of Django 1.6. upload_to does not prepend MEDIA_ROOT, but you are responsible for ensuring that upload_to starts with MEDIA_ROOT.

If it doesn't, you will get a 400 Bad Request response to POST, which is exceptionally hard to debug if you don't have some form of logging enabled.