From: Petr Viktorin <encukou@gmail.com>
Date: Sun, 3 Apr 2011 16:42:46 +0000 (+0300)
Subject: Enable nullable MarkdownColumns
X-Git-Tag: veekun-promotions/2011041101~8^2~5
X-Git-Url: http://git.veekun.com/zzz-pokedex.git/commitdiff_plain/93be19674c4072725be9aa4eac890931c8b0e294

Enable nullable MarkdownColumns
---

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)