Fixed #2599 -- Fixed rendering problem in comma-separated integer fields.

Thanks, Christopher Lenz.


git-svn-id: http://code.djangoproject.com/svn/django/trunk@3804 bcc190cf-cafb-0310-a4f2-bffc1f526a37

django/forms/__init__.py

@@ -969,6 +969,13 @@ class CommaSeparatedIntegerField(TextField):
         except validators.ValidationError, e:
             raise validators.CriticalValidationError, e.messages
 
+    def render(self, data):
+        if data is None:
+            data = ''
+        elif isinstance(data, (list, tuple)):
+            data = ','.join(data)
+        return super(CommaSeparatedIntegerField, self).render(data)
+
 class RawIdAdminField(CommaSeparatedIntegerField):
     def html2python(data):
         if data: