option to export non-publishable lesson

[redakcja.git] / apps / catalogue / ebook_utils.py

diff --git a/apps/catalogue/ebook_utils.py b/apps/catalogue/ebook_utils.py
index d9c9922..8b7d80f 100644 (file)
--- a/apps/catalogue/ebook_utils.py
+++ b/apps/catalogue/ebook_utils.py
@@ -1,7 +1,6 @@
 # -*- coding: utf-8 -*-
-from StringIO import StringIO
 from catalogue.models import Book
-from librarian import DocProvider
+from librarian import DocProvider, IOFile
 from django.http import HttpResponse
 
 
@@ -12,9 +11,8 @@ class RedakcjaDocProvider(DocProvider):
         self.publishable = publishable
 
     def by_slug(self, slug):
-        return StringIO(Book.objects.get(dc_slug=slug
-                    ).materialize(publishable=self.publishable
-                    ).encode('utf-8'))
+        return IOFile.from_string(
+            Book.objects.get(dc_slug=slug).materialize(publishable=self.publishable).encode('utf-8'))
 
 
 def serve_file(file_path, name, mime_type):