Various grid and form tweaks.

tailbone/forms/fields.py

@@ -34,7 +34,8 @@ __all__ = ['AssociationProxyField']
 
 def AssociationProxyField(name, **kwargs):
     """
-    Returns a ``Field`` class which is aware of SQLAlchemy association proxies.
+    Returns a FormAlchemy ``Field`` class which is aware of association
+    proxies.
     """
 
     class ProxyField(Field):
@@ -45,10 +46,7 @@ def AssociationProxyField(name, **kwargs):
                         self.renderer.deserialize())
 
     def value(model):
-        try:
-            return getattr(model, name)
-        except AttributeError:
-            return None
+        return getattr(model, name, None)
 
     kwargs.setdefault('value', value)
     return ProxyField(name, **kwargs)