Re: Use primary key in filenames on FileFields

I forgot to mention that i have imported models like this:

import django.db.models as m

This should explain the first two lines.

On Mon, Sep 5, 2011 at 12:28 PM, Stratos Moros <s.moros@indev.gr> wrote:
> Hello,
>
> I have a model that includes a FileField. When the user uploads a file
> via the admin interface, I want the file to be saved as 'upload_to/
> primary_key/original_filename'. Since the object will not be saved in
> the database when the user uploads the file, it will not have a
> primary key at that point. This is my workaround:
>
>
> class Decision(m.Model):
>    ...
>    decision = m.FileField(upload_to='base_dir/')
>    ...
>
>    def save(self, *args, **kwargs):
>        """ custom save to use pk on filename """
>        #save once to get a pk
>        super(Decision, self).save(*args, **kwargs)
>
>        #get info about the file
>        uploaded = self.decision
>        old_path = self.decision.name
>        basedir, filename = os.path.split(old_path)
>        new_path = os.path.join(basedir, str(self.pk), filename)
>
>        #create the new file, delete the one django created
>        uploaded.storage.save(new_path, uploaded)
>        uploaded.storage.delete(old_path)
>
>        #assign new path and save again
>        self.decision = new_path
>        super(Decision, self).save(*args, **kwargs)
>
>
> This works, but seems to be a bit on the hacky side. Basically, I'm
> letting FileField upload the file to the 'upload_to' path and then
> move it to its correct path when the object has a primary key.
>
> I was wondering if there is a better way to do this. Are there any
> cases where my code wouldn't work?
>
> Thanks.
>

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