X-Git-Url: https://git.mdrn.pl/wolnelektury.git/blobdiff_plain/e1ca1ec8d77b79835f83bb8910cdd629e1cd3534..a652bbb45f118f38a3688680c527e31d726ed7a8:/apps/catalogue/views.py

diff --git a/apps/catalogue/views.py b/apps/catalogue/views.py
index f574c13fa..b73552ed6 100644
--- a/apps/catalogue/views.py
+++ b/apps/catalogue/views.py
@@ -214,7 +214,18 @@ def download_shelf(request, slug):
     # Create a ZIP archive
     temp = temp = tempfile.TemporaryFile()
     archive = zipfile.ZipFile(temp, 'w')
-    for book in models.Book.tagged.with_all(shelf):
+    
+    # Collect all books to include in ZIP archive
+    def collect_books(books):
+        result = []
+        for book in books:
+            if len(book.children.all()) == 0:
+                result.append(book)
+            else:
+                result += collect_books(book.children.all())
+        return result
+    
+    for book in collect_books(models.Book.tagged.with_all(shelf)):
         if book.pdf_file:
             filename = book.pdf_file.path
             archive.write(filename, str('%s.pdf' % book.slug))