X-Git-Url: http://git.veekun.com/zzz-pokedex.git/blobdiff_plain/2fee7534634e0f96094500811ae88b2bfae94fc6..a04865183fefdd58b0de1cea7c69a9b04a408e53:/pokedex/db/markdown.py

diff --git a/pokedex/db/markdown.py b/pokedex/db/markdown.py
index 616830a..257c8de 100644
--- a/pokedex/db/markdown.py
+++ b/pokedex/db/markdown.py
@@ -106,6 +106,9 @@ class MarkdownColumn(sqlalchemy.types.TypeDecorator):
     impl = sqlalchemy.types.Unicode
 
     def process_bind_param(self, value, dialect):
+        if value is None:
+            return None
+
         if not isinstance(value, basestring):
             # Can't assign, e.g., MarkdownString objects yet
             raise NotImplementedError
@@ -113,4 +116,7 @@ class MarkdownColumn(sqlalchemy.types.TypeDecorator):
         return unicode(value)
 
     def process_result_value(self, value, dialect):
+        if value is None:
+            return None
+
         return MarkdownString(value)