X-Git-Url: https://git.mdrn.pl/wolnelektury.git/blobdiff_plain/76849e4b3dcc3305edbe86b794b04a0bf4a8467c..aae232dcf008ab39db553bc1b20573fa00e3b191:/apps/catalogue/models/book.py

diff --git a/apps/catalogue/models/book.py b/apps/catalogue/models/book.py
index 64dd498d7..83bc040c6 100644
--- a/apps/catalogue/models/book.py
+++ b/apps/catalogue/models/book.py
@@ -100,6 +100,12 @@ class Book(models.Model):
     def name(self):
         return self.title
 
+    def language_code(self):
+        return constants.LANGUAGES_3TO2.get(self.language, self.language)
+
+    def language_name(self):
+        return dict(settings.LANGUAGES).get(self.language_code(), "")
+
     def book_tag_slug(self):
         return ('l-' + self.slug)[:120]
 
@@ -406,6 +412,10 @@ class Book(models.Model):
             for child in self.children.all():
                 child.parent_cover_changed()
 
+    def other_versions(self):
+        """Find other versions (i.e. in other languages) of the book."""
+        return type(self).objects.filter(common_slug=self.common_slug).exclude(pk=self.pk)
+
     def related_info(self):
         """Keeps info about related objects (tags, media) in cache field."""
         if self._related_info is not None:
@@ -535,7 +545,7 @@ class Book(models.Model):
         """
         # get relevant books and their tags
         objects = cls.tagged.with_all(tags)
-        parents = objects.filter(html_file='').only('slug')
+        parents = objects.exclude(children=None).only('slug')
         # eliminate descendants
         l_tags = Tag.objects.filter(category='book',
             slug__in=[book.book_tag_slug() for book in parents.iterator()])