Handle image reupload correctly.

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

diff --git a/apps/catalogue/models/book.py b/apps/catalogue/models/book.py
index 25b9304..7c2bccc 100755 (executable)
--- a/apps/catalogue/models/book.py
+++ b/apps/catalogue/models/book.py
@@ -13,7 +13,7 @@ from slughifi import slughifi
 
 import apiclient
 from catalogue.helpers import cached_in_field, GalleryMerger
-from catalogue.models import BookPublishRecord, ChunkPublishRecord
+from catalogue.models import BookPublishRecord, ChunkPublishRecord, Project
 from catalogue.signals import post_publish
 from catalogue.tasks import refresh_instance, book_content_updated
 from catalogue.xml_tools import compile_text, split_xml
@@ -29,6 +29,7 @@ class Book(models.Model):
     slug = models.SlugField(_('slug'), max_length=128, unique=True, db_index=True)
     public = models.BooleanField(_('public'), default=True, db_index=True)
     gallery = models.CharField(_('scan gallery name'), max_length=255, blank=True)
+    project = models.ForeignKey(Project, null=True, blank=True)
 
     #wl_slug = models.CharField(_('title'), max_length=255, null=True, db_index=True, editable=False)
     parent = models.ForeignKey('self', null=True, blank=True, verbose_name=_('parent'), related_name="children", editable=False)
@@ -205,7 +206,8 @@ class Book(models.Model):
         # and move the gallery starts
         if gm.was_merged:
                 for chunk in self[len(self) - len_other:]:
-                        chunk.gallery_start += gm.dest_size - gm.num_deleted
+                        old_start = chunk.gallery_start or 1
+                        chunk.gallery_start = old_start + gm.dest_size - gm.num_deleted
                         chunk.save()
 
         other.delete()
@@ -270,6 +272,14 @@ class Book(models.Model):
         valid_about = self.correct_about()
         assert bi.about == valid_about, _("rdf:about is not") + " " + valid_about
 
+    def publishable_error(self):
+        try:
+            return self.assert_publishable()
+        except AssertionError, e:
+            return e
+        else:
+            return None
+
     def hidden(self):
         return self.slug.startswith('.')