admin.py

#!/usr/bin/env python
# -*- coding: utf-8 -*-
import uuid
import zipfile
import pyghana.settings
from datetime import datetime
from zipfile import ZipFile

from django.contrib import admin
from django.core.files.base import ContentFile

from PIL import Image

from app.models import Album, AlbumImage
from app.forms import AlbumForm

@admin.register(Album)
class AlbumModelAdmin(admin.ModelAdmin):
    form = AlbumForm
    prepopulated_fields = {'slug': ('title',)}
    list_display = ('title', 'thumb')
    list_filter = ('created',)

    def save_model(self, request, obj, form, change):
        if form.is_valid():
            album = form.save(commit=False)
            album.modified = datetime.now()
            album.save()

            if form.cleaned_data['zip'] != None:
                zip = zipfile.ZipFile(form.cleaned_data['zip'])
                for filename in sorted(zip.namelist()):
                    data = zip.read(filename)
                    contentfile = ContentFile(data)

                    img = AlbumImage()
                    img.album = album
                    img.alt = filename
                    filename = '{0}{1}.jpg'.format(album.slug, str(uuid.uuid4())[-13:])
                    img.image.save(filename, contentfile)

                    filepath = '{0}/albums/{1}'.format(pyghana.settings.MEDIA_ROOT, filename)
                    with Image.open(filepath) as i:
                        img.width, img.height = i.size

                    img.thumb.save('thumb-{0}'.format(filename), contentfile)
                    img.save()
                zip.close()
            super(AlbumModelAdmin, self).save_model(request, obj, form, change)

# In case image should be removed from album.
@admin.register(AlbumImage)
class AlbumImageModelAdmin(admin.ModelAdmin):
    list_display = ('alt', 'album')
    list_filter = ('album', 'created')