check for req.method first.

lib/schema.js

@@ -112,7 +112,7 @@ exports.create = function(schema) {
 };
 exports.middleware = function(schema) {
   return function(req, res, next) {
-    req.form = new Schema(schema).validate(req.route.method == "post" ? req.body : req.query);
+    req.form = new Schema(schema).validate((req.method || req.route.method || '').toLowerCase() == "post" ? req.body : req.query);
     next();
   };
 };