Question

if I have basic model for keeping track of client art:

class ArtEntry(models.Model):
    client = models.CharField(max_length=50, choices=CLIENT_CHOICES)
    job_number = models.CharField(max_length=30, unique=False, blank=False, null=False)
    filename = models.CharField(max_length=64, unique=False, blank=False, null=False)
    descriptor = models.CharField(max_length=64, unique=False, blank=True, null=True)
    date = models.DateField(("Date"), default=datetime.date.today)
    post_type = models.CharField(max_length=64, choices=POST_CHOICES)

and the last field of this model is a file upload field:

    upload = models.FileField(upload_to='documents/*/**/***')

is it possible to populate the “upload_to” argument dynamically, so that * = the input ‘client’ data and ** = the input ‘job_number’ and * = the ‘post_type’ choice?

Answer 1

Sure. Just check the docs for upload_to:

This may also be a callable, such as a function, which will be called
to obtain the upload path, including the filename.

Check this answer to see an example which you can easily adapt to your problem.