add a revert button to return scan gallery to first page for this book

[redakcja.git] / apps / catalogue / models / book.py

diff --git a/apps/catalogue/models/book.py b/apps/catalogue/models/book.py
index 46d11e8..ade9a42 100755 (executable)
--- a/apps/catalogue/models/book.py
+++ b/apps/catalogue/models/book.py
@@ -34,6 +34,7 @@ class Book(models.Model):
     _single = models.NullBooleanField(editable=False, db_index=True)
     _new_publishable = models.NullBooleanField(editable=False)
     _published = models.NullBooleanField(editable=False)
+    _on_track = models.IntegerField(null=True, blank=True, db_index=True, editable=False)
     dc_slug = models.CharField(max_length=128, null=True, blank=True,
             editable=False, db_index=True)
 
@@ -208,6 +209,18 @@ class Book(models.Model):
         assert not other.chunk_set.exists()
         other.delete()
 
+    def split(self):
+        """Splits all the chunks into separate books."""
+        self.title
+        for chunk in self:
+            book = Book.objects.create(title=chunk.title, slug=chunk.slug,
+                    public=self.public, gallery=self.gallery)
+            book[0].delete()
+            chunk.book = book
+            chunk.number = 1
+            chunk.save()
+        assert not self.chunk_set.exists()
+        self.delete()
 
     # State & cache
     # =============
@@ -230,13 +243,13 @@ class Book(models.Model):
         from librarian import NoDublinCore, ParseError, ValidationError
 
         try:
-            bi = BookInfo.from_string(book_xml.encode('utf-8'))
+            bi = BookInfo.from_string(book_xml.encode('utf-8'), strict=True)
         except ParseError, e:
-            raise AssertionError(_('Invalid XML') + ': ' + str(e))
+            raise AssertionError(_('Invalid XML') + ': ' + unicode(e))
         except NoDublinCore:
             raise AssertionError(_('No Dublin Core found.'))
         except ValidationError, e:
-            raise AssertionError(_('Invalid Dublin Core') + ': ' + str(e))
+            raise AssertionError(_('Invalid Dublin Core') + ': ' + unicode(e))
 
         valid_about = self.correct_about()
         assert bi.about == valid_about, _("rdf:about is not") + " " + valid_about
@@ -267,6 +280,16 @@ class Book(models.Model):
         return self.publish_log.exists()
     published = cached_in_field('_published')(is_published)
 
+    def get_on_track(self):
+        if self.published:
+            return -1
+        stages = [ch.stage.ordering if ch.stage is not None else 0
+                    for ch in self]
+        if not len(stages):
+            return 0
+        return min(stages)
+    on_track = cached_in_field('_on_track')(get_on_track)
+
     def is_single(self):
         return len(self) == 1
     single = cached_in_field('_single')(is_single)
@@ -295,7 +318,7 @@ class Book(models.Model):
 
         info = self.book_info()
         if info is not None:
-            update['dc_slug'] = info.slug
+            update['dc_slug'] = info.url.slug
         Book.objects.filter(pk=self.pk).update(**update)
 
     def touch(self):
@@ -306,6 +329,7 @@ class Book(models.Model):
             "_new_publishable": self.is_new_publishable(),
             "_published": self.is_published(),
             "_single": self.is_single(),
+            "_on_track": self.get_on_track(),
             "_short_html": None,
         }
         Book.objects.filter(pk=self.pk).update(**update)
@@ -346,6 +370,15 @@ class Book(models.Model):
             changes = self.get_current_changes(publishable)
         return compile_text(change.materialize() for change in changes)
 
+    def wldocument(self, publishable=True, changes=None, parse_dublincore=True):
+        from catalogue.ebook_utils import RedakcjaDocProvider
+        from librarian.parser import WLDocument
+
+        return WLDocument.from_string(
+                self.materialize(publishable=publishable, changes=changes),
+                provider=RedakcjaDocProvider(publishable=publishable),
+                parse_dublincore=parse_dublincore)
+
     def publish(self, user):
         """
             Publishes a book on behalf of a (local) user.