simplified form generation from schema

ordr2/schemas/__init__.py

@@ -24,8 +24,11 @@ class CSRFSchema(colander.Schema):
         )
 
     @classmethod
-    def as_form(cls, request, url, **kw):
+    def as_form(cls, request, **kwargs):
+        url = kwargs.get('url', None)
+        if not url:
+            url = request.resource_url(request.context, request.view_name)
         schema = cls().bind(request=request)
-        form = deform.Form(schema, action=url, **kw)
+        form = deform.Form(schema, action=url, **kwargs)
         return form