fixes some bugs to weixin pay

@@ -819,14 +819,14 @@ class HomeController extends AbstractAction
     public function weixinapiAction()
     {
         do {
-            if (!$this->isAjax()) {
-                break;
-            }
-            
-            $uid = $this->getUid(true);
-            if (!$uid) {
-                break;
-            }
+//            if (!$this->isAjax()) {
+//                break;
+//            }
+//            
+//            $uid = $this->getUid(true);
+//            if (!$uid) {
+//                break;
+//            }
             
             $orderCode = $this->get('order_code');
             if (empty($orderCode)) {
@@ -838,10 +838,11 @@ class HomeController extends AbstractAction
                 break;
             }
             
+            $result['data'] = isset($result['data']['prePayData']) ? $result['data']['prePayData'] : array();
             $result['data']['appId'] = 'wx049fdaa3ba9cdd7a'; //'wx75e5a7c0c88e45c2';
             $result['data']['signType'] = 'MD5';
             $result['data']['paySign'] = isset($result['data']['sign']) ? $result['data']['sign'] : '';
-            
+
             $this->echoJson(array('code' => 200, 'data' => array('jsApiParameters' => $result['data'])) );
         }
         while (false);