X-Git-Url: http://git.veekun.com/zzz-pokedex.git/blobdiff_plain/acb88ee169b9a8f255f2e72cca2cf6dc94fd02e8..b82af79bb9da4c033e3891bba40e913e19393be3:/pokedex/db/markdown.py

diff --git a/pokedex/db/markdown.py b/pokedex/db/markdown.py
index 09f8067..c82ce68 100644
--- a/pokedex/db/markdown.py
+++ b/pokedex/db/markdown.py
@@ -112,6 +112,9 @@ 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
@@ -119,4 +122,7 @@ class MarkdownColumn(sqlalchemy.types.TypeDecorator):
         return unicode(value)
 
     def process_result_value(self, value, dialect):
+        if value is None:
+            return None
+
         return MarkdownString(value)