Question

I’m trying to upload files using Django-filetransfer and I was wondering how to import the username to use as the name of the file the uploads are saved in. Right now I’m using User.username, but that is invalid. I guess the big question is how to access a user’s attributes from models.py. Below is my models.py:

from django.db import models
from django.contrib.auth.models import User, UserManager

class UploadModel(User,models.Model):
    title = models.CharField(max_length=64, blank=True)
    user = models.ForeignKey(User)
    file = models.FileField(upload_to='./uploads/'+str(User.username))


    @property
    def filename(self):
    return self.file.name.rsplit('/', 1)[-1]

UPDATED:
app/upload/models.py

from django.db import models
from django.contrib.auth.models import User, UserManager

def uploadmodel_file_upload_to(instance, filename):
    return 'uploads/%s/%s' % (instance.user.username, filename)

class UploadModel(models.Model):
    user = models.ForeignKey('auth.user')
    file = models.FileField(upload_to=uploadmodel_file_upload_to)

TemplateSyntaxError at /upload
Caught DatabaseError while rendering: column upload_uploadmodel.user_id does not exist
LINE 1: SELECT “upload_uploadmodel”.”id”, “upload_uploadmodel”.”user…

Answer 1

Model attributes are officially defined when Python parses models.py code. You should use a callback for upload_to, to be generate the upload file path using the user related instance, for example:

def uploadmodel_file_upload_to(instance, filename):
    return 'uploads/%s/%s' % (instance.user.username, filename)

class UploadModel(models.Model):
    user = models.ForeignKey('auth.user')
    file = models.FileField(upload_to=uploadmodel_file_upload_to)