1 # This file is part of Wolnelektury, licensed under GNU Affero GPLv3 or later.
2 # Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information.
4 from django.db import models
5 from django.utils.translation import ugettext_lazy as _
8 class Source(models.Model):
9 """A collection of books, which might be defined before publishing them."""
10 netloc = models.CharField(_('network location'), max_length=120, primary_key=True)
11 name = models.CharField(_('name'), max_length=120, blank=True)
14 ordering = ('netloc',)
15 verbose_name = _('source')
16 verbose_name_plural = _('sources')
17 app_label = 'catalogue'
22 def save(self, *args, **kwargs):
23 from catalogue.models import Book
26 old_self = type(self).objects.get(pk=self)
27 except type(self).DoesNotExist:
29 old_netloc = self.netloc
31 old_name = old_self.name
32 old_netloc = old_self.netloc
34 ret = super(Source, self).save(*args, **kwargs)
36 # If something really changed here, find relevant books
37 # and invalidate their cached includes.
38 if old_name != self.name or old_netloc != self.netloc:
39 for book in Book.objects.all():
40 source = book.get_extra_info_json().get('source_url', '')
41 if self.netloc in source or (old_netloc != self.netloc and old_netloc in source):