X-Git-Url: https://git.mdrn.pl/wolnelektury.git/blobdiff_plain/b7d5131321533374cdcb85542ef4dcb53269863d..f7833f76b5f9555b0d95d23d47fc886a3528a335:/apps/catalogue/models.py

diff --git a/apps/catalogue/models.py b/apps/catalogue/models.py
index 58025fabd..2c1f66a6b 100644
--- a/apps/catalogue/models.py
+++ b/apps/catalogue/models.py
@@ -231,11 +231,14 @@ class Book(models.Model):
         if hasattr(book_info, 'parts'):
             for n, part_url in enumerate(book_info.parts):
                 base, slug = part_url.rsplit('/', 1)
-                child_book = Book.objects.get(slug=slug)
-                child_book.parent = book
-                child_book.parent_number = n
-                child_book.save()
-
+                try:
+                    child_book = Book.objects.get(slug=slug)
+                    child_book.parent = book
+                    child_book.parent_number = n
+                    child_book.save()
+                except Book.DoesNotExist, e:
+                    raise Book.DoesNotExist(u'Book with slug = "%s" does not exist.' % slug)
+        
         book_descendants = list(book.children.all())
         while len(book_descendants) > 0:
             child_book = book_descendants.pop(0)