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 urlparse import urljoin
   8 from django.conf import settings
   9 from django.core.files.base import ContentFile
  10 from django.db import models
  11 from django.db.models.signals import post_save
  12 from django.dispatch import receiver
  13 from django.utils.translation import ugettext_lazy as _
  14 from django.contrib.sites.models import Site
  15 from cover.utils import URLOpener
  16
  17
  18 class Image(models.Model):
  19     title = models.CharField(max_length=255, verbose_name=_('title'))
  20     author = models.CharField(max_length=255, verbose_name=_('author'))
  21     license_name = models.CharField(max_length=255, verbose_name=_('license name'))
  22     license_url = models.URLField(max_length=255, blank=True, verbose_name=_('license URL'))
  23     source_url = models.URLField(verbose_name=_('source URL'))
  24     download_url = models.URLField(unique=True, verbose_name=_('image download URL'))
  25     file = models.ImageField(upload_to='cover/image', editable=False, verbose_name=_('file'))
  26
  27     class Meta:
  28         verbose_name = _('cover image')
  29         verbose_name_plural = _('cover images')
  30
  31     def __unicode__(self):
  32         return u"%s - %s" % (self.author, self.title)
  33
  34     @models.permalink
  35     def get_absolute_url(self):
  36         return ('cover_image', [self.id])
  37
  38     def get_full_url(self):
  39         return "http://%s%s" % (Site.objects.get_current().domain, self.get_absolute_url())
  40
  41
  42 @receiver(post_save, sender=Image)
  43 def download_image(sender, instance, **kwargs):
  44     if instance.pk and not instance.file:
  45         t = URLOpener().open(instance.download_url).read()
  46         instance.file.save("%d.jpg" % instance.pk, ContentFile(t))
  47
  48