upload_to argument on FileField It is not completely clear in the documentation

[finngruwier]

The documentation says: "A local filesystem path that will be appended to your MEDIA_ROOT setting...". However, if file_field is a callable, the value returned from the callable will be used as the full path for the file, thus ignoring the MEDIA_ROOT setting.

[Karen Tracey]

The MEDIA_ROOT setting is not ignored if the upload_to is a callable. The callable upload_to is expected to return a local filesystem path that will then be appended to MEDIA_ROOT, just like a static upload_to. (Note in both cases if these values turn out to be absolute paths then that absolute path will be used. This will usually result in a SuspiciousOperation exception since Django won't allow writing to files outside the MEDIA_ROOT tree. If, however, the absolute path happens to fall inside the MEDIA_ROOT tree then things will work.)

[finngruwier]

Ah - I see.

Thanks for pointing this out.