models.py

from django.db import models
from django.contrib import admin
from PIL import Image
from Boothie.settings import MEDIA_ROOT, MEDIA_URL
from django.conf import settings
import os.path
from django.utils.html import format_html
from django.core.files.storage import FileSystemStorage




class Album(models.Model):
    title = models.CharField(max_length=50)
    # thumbnail = models.ImageField()

    def __str__(self):
        return self.title

    def images(self):
        lst = [x.photo.title for x in self.photo_set.all()]
        return lst

class AlbumAdmin(admin.ModelAdmin):
    # Set search_fields to enable a search box on the admin change list page.
    # This should be set to a list of field names that will be searched whenever
    # somebody submits a search query in that text box.
    search_fields = ["title"]
    # Set list_display to control which fields are displayed on the change list page of the admin.
    list_display = ["title"]


class Photo(models.Model):
    title = models.CharField(max_length=50, blank=True)
    album = models.ForeignKey(Album)
    photo = models.FileField(upload_to="album")
    width = models.IntegerField(blank=True, null=True)
    height = models.IntegerField(blank=True, null=True)
    upload = models.DateTimeField(auto_now_add=True)
    # thumbnail = models.ImageField()

    def save(self, *args, **kwargs):
        # Save image dimensions
        # Save image
        super(Photo, self).save(*args, **kwargs)
        # get image
        # pic = Image.open(os.path.join(MEDIA_ROOT, self.photo))
        pic = Image.open(FileSystemStorage(location=os.path.join(MEDIA_ROOT, self.photo)))
        # set Photo width and height
        self.width, self.height = pic.size
        # save object
        super(Photo, self).save(*args, **kwargs)

    def __str__(self):
        return self.title

    def albums_(self):
        # https://docs.djangoproject.com/en/1.7/ref/models/querysets/#values-list
        lst = [x[1] for x in self.album.value_list()]
        return ', '.join(lst)

    def size(self):
        # Photo size
        return "%s x %s" % (self.width, self.height)

    def thumbnail(self):
        # return """<a href="/media/%s"><img border="0" alt="" src="/media/%s" height="40" /></a>""" % (self.image.name, self.image.name)
        thumbnail_html = """<a href=\"{{ MEDIA_URL }}%s\"><img border=\"0\" alt=\"\" src=\"{{ MEDIA_URL }}%s\" height=\"40\" /></a>""" % (self.photo.name, self.photo.name)
        # thumbnail_html = "<a href=\"{0}{1}\"><img border=\"0\" alt=\"\" src=\"{2}{3}\" height=\"40\" /></a>".format(settings.MEDIA_URL, self.photo.name, settings.MEDIA_URL, self.photo.name)
        return thumbnail_html

    thumbnail.allow_tags = True

class PhotoAdmin(admin.ModelAdmin):
    search_fields = ["title", "photo"]
    list_display = ["photo", "thumbnail", "title", "album", "size"]
    list_filter = ["album"]

settings.py

STATIC_ROOT = os.path.join(BASE_DIR, "../collected_static/Boothie")
MEDIA_ROOT = os.path.join(BASE_DIR, "../media_root/Boothie/pics")
MEDIA_URL = '/media/'
STATIC_URL = '/static/'
STATICFILES_DIRS = (
    os.path.join(BASE_DIR, "static"),
)