fix ancient bug (WaitedFile.is_stale)

[wolnelektury.git] / src / catalogue / models / book.py

diff --git a/src/catalogue/models/book.py b/src/catalogue/models/book.py
index 6e66f2e..5ac999e 100644 (file)
--- a/src/catalogue/models/book.py
+++ b/src/catalogue/models/book.py
@@ -22,6 +22,7 @@ from catalogue import constants
 from catalogue.fields import EbookField
 from catalogue.models import Tag, Fragment, BookMedia
 from catalogue.utils import create_zip, gallery_url, gallery_path
+from catalogue.models.tag import prefetched_relations
 from catalogue import app_settings
 from catalogue import tasks
 from wolnelektury.utils import makedirs
@@ -92,7 +93,7 @@ class Book(models.Model):
         pass
 
     class Meta:
-        ordering = ('sort_key',)
+        ordering = ('sort_key_author', 'sort_key')
         verbose_name = _('book')
         verbose_name_plural = _('books')
         app_label = 'catalogue'
@@ -106,8 +107,18 @@ class Book(models.Model):
         except AttributeError:
             return ''
 
-    def author_str(self):
-        return ", ".join(str(t) for t in self.tags.filter(category='author'))
+    def authors(self):
+        return self.tags.filter(category='author')
+
+    def tag_unicode(self, category):
+        relations = prefetched_relations(self, category)
+        if relations:
+            return ', '.join(rel.tag.name for rel in relations)
+        else:
+            return ', '.join(self.tags.filter(category=category).values_list('name', flat=True))
+
+    def author_unicode(self):
+        return self.tag_unicode('author')
 
     def save(self, force_insert=False, force_update=False, **kwargs):
         from sortify import sortify
@@ -116,8 +127,8 @@ class Book(models.Model):
         self.title = unicode(self.title)  # ???
 
         try:
-            author = self.tags.filter(category='author')[0].sort_key
-        except IndexError:
+            author = self.authors().first().sort_key
+        except AttributeError:
             author = u''
         self.sort_key_author = author
 
@@ -150,6 +161,9 @@ class Book(models.Model):
     def language_name(self):
         return dict(settings.LANGUAGES).get(self.language_code(), "")
 
+    def is_foreign(self):
+        return self.language_code() != settings.LANGUAGE_CODE
+
     def has_media(self, type_):
         if type_ in Book.formats:
             return bool(getattr(self, "%s_file" % type_))
@@ -247,6 +261,11 @@ class Book(models.Model):
 
     def download_pictures(self, remote_gallery_url):
         gallery_path = self.gallery_path()
+        # delete previous files, so we don't include old files in ebooks
+        if os.path.isdir(gallery_path):
+            for filename in os.listdir(gallery_path):
+                file_path = os.path.join(gallery_path, filename)
+                os.unlink(file_path)
         ilustr_elements = list(self.wldocument().edoc.findall('//ilustr'))
         if ilustr_elements:
             makedirs(gallery_path)
@@ -470,7 +489,7 @@ class Book(models.Model):
         return books
 
     def pretty_title(self, html_links=False):
-        names = [(tag.name, tag.get_absolute_url()) for tag in self.tags.filter(category='author')]
+        names = [(tag.name, tag.get_absolute_url()) for tag in self.authors().only('name', 'category', 'slug')]
         books = self.parents() + [self]
         names.extend([(b.title, b.get_absolute_url()) for b in books])
 
@@ -500,8 +519,7 @@ class Book(models.Model):
         """
 
         books_by_parent = {}
-        books = cls.objects.all().order_by('parent_number', 'sort_key').only(
-                'title', 'parent', 'slug')
+        books = cls.objects.order_by('parent_number', 'sort_key').only('title', 'parent', 'slug')
         if book_filter:
             books = books.filter(book_filter).distinct()
 
@@ -521,7 +539,7 @@ class Book(models.Model):
             books_by_author[tag] = []
 
         for book in books_by_parent.get(None, ()):
-            authors = list(book.tags.filter(category='author'))
+            authors = list(book.authors().only('pk'))
             if authors:
                 for author in authors:
                     books_by_author[author].append(book)
@@ -566,6 +584,15 @@ class Book(models.Model):
         else:
             return None
 
+    def update_popularity(self):
+        count = self.tags.filter(category='set').values('user').order_by('user').distinct().count()
+        try:
+            pop = self.popularity
+            pop.count = count
+            pop.save()
+        except BookPopularity.DoesNotExist:
+            BookPopularity.objects.create(book=self, count=count)
+
 
 def add_file_fields():
     for format_ in Book.formats:
@@ -585,3 +612,8 @@ def add_file_fields():
         ).contribute_to_class(Book, field_name)
 
 add_file_fields()
+
+
+class BookPopularity(models.Model):
+    book = models.OneToOneField(Book, related_name='popularity')
+    count = models.IntegerField(default=0)