http://chriskief.com/2012/12/15/multiple-files-for-django-models/

blog.py

from django.db import models


class Blog(models.Model):

    title = models.CharField(max_length=255)
    slug = models.CharField(max_length=255)
    author = models.CharField(max_length=100)
    blog = models.TextField()
    image = models.CharField(max_length=20)
    tags = models.TextField()
    created = models.DateTimeField('date created', auto_now_add=True)
    updated = models.DateTimeField('last updated', auto_now_add=True, auto_now=True)

    def __unicode__(self):
        return self.title

    class Meta:
        app_label = 'app'