Django: Access primary key in models.filefield(upload_to) location

Question

I\'d like to save my files using the primary key of the entry.

Here is my code:

def get_nzb_filename(instance, filename):
    if not instance.pk:
            


        

Answer 1

It seems you'll need to pre-generate your File models with empty file fields first. Then pick up one and save it with the given file object.

You can have a custom manager method like this;

def create_with_pk(self):
    instance = self.create()
    instance.save()     # probably this line is unneeded
    return instance

But this will be troublesome if either of your fields is required. Because you are initially creating a null object, you can't enforce required fields on the model level.

EDIT

create_with_pk is supposed to be a custom manager method, in your code it is just a regular method. Hence self is meaningless. It is all properly documented with examples.