apps/cover/models.py

   1 # -*- coding: utf-8 -*-
   2 #
   3 # This file is part of FNP-Redakcja, licensed under GNU Affero GPLv3 or later.
   4 # Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information.
   5 #
   6 import re
   7 from urllib2 import urlopen
   8 from urlparse import urljoin
   9 from django.conf import settings
  10 from django.core.files.base import ContentFile
  11 from django.db import models
  12 from django.db.models.signals import post_save
  13 from django.dispatch import receiver
  14 from django.utils.translation import ugettext_lazy as _
  15
  16
  17 class Image(models.Model):
  18     title = models.CharField(max_length=255, verbose_name=_('title'))
  19     author = models.CharField(max_length=255, verbose_name=_('author'))
  20     license_name = models.CharField(max_length=255, verbose_name=_('license name'))
  21     license_url = models.URLField(max_length=255, blank=True, verbose_name=_('license URL'))
  22     source_url = models.URLField(verbose_name=_('source URL'))
  23     download_url = models.URLField(unique=True, verbose_name=_('image download URL'))
  24     file = models.ImageField(upload_to='cover/image', editable=False, verbose_name=_('file'))
  25
  26     class Meta:
  27         verbose_name = _('cover image')
  28         verbose_name_plural = _('cover images')
  29
  30     def __unicode__(self):
  31         return u"%s - %s" % (self.author, self.title)
  32
  33     @models.permalink
  34     def get_absolute_url(self):
  35         return ('cover_image', [self.id])
  36
  37
  38 @receiver(post_save, sender=Image)
  39 def download_image(sender, instance, **kwargs):
  40     if instance.pk and not instance.file:
  41         t = urlopen(instance.download_url).read()
  42         instance.file.save("%d.jpg" % instance.pk, ContentFile(t))
  43
  44