+ def get_subpath(self, obj):
+ if isinstance(obj, NewsletterArticle):
+ if obj.newsletter == self.newsletter:
+ article_view_args = {'slug': obj.slug}
+ if self.article_permalink_style in 'DMY':
+ article_view_args.update({'year': str(obj.date.year).zfill(4)})
+ if self.article_permalink_style in 'DM':
+ article_view_args.update({'month': str(obj.date.month).zfill(2)})
+ if self.article_permalink_style == 'D':
+ article_view_args.update({'day': str(obj.date.day).zfill(2)})
+ return reverse(self.article_view, urlconf=self, kwargs=article_view_args)
+ elif isinstance(obj, NewsletterIssue):
+ if obj.newsletter == self.newsletter:
+ return reverse(self.issue_view, urlconf=self, kwargs={'number': str(obj.number)})
+ raise ViewCanNotProvideSubpath
+