X-Git-Url: http://git.veekun.com/zzz-pokedex.git/blobdiff_plain/2fee7534634e0f96094500811ae88b2bfae94fc6..55758f863e5137fd44e4b43f3c2a63005177f08c:/pokedex/db/markdown.py

diff --git a/pokedex/db/markdown.py b/pokedex/db/markdown.py
index 616830a..c82ce68 100644
--- a/pokedex/db/markdown.py
+++ b/pokedex/db/markdown.py
@@ -31,11 +31,17 @@ class MarkdownString(object):
     def __unicode__(self):
         return self.source_text
 
+    def __str__(self):
+        return unicode(self.source_text).encode()
+
+    def __html__(self):
+        return self.as_html
+
     @property
     def as_html(self):
         """Returns the string as HTML4."""
 
-        if self._as_html:
+        if self._as_html is not None:
             return self._as_html
 
         md = markdown.Markdown(
@@ -106,6 +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
@@ -113,4 +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)