代付openid

@@ -546,6 +546,7 @@ class Order extends Api
      * @ApiMethod   (POST)
      * @ApiHeaders  (name=token, type=string, required=true, description="请求的Token")
      * @ApiParams   (name="id", type="integer", required=true, description="订单ID")
+     * @ApiParams   (name="openid", type="string", required=false, description="代付人openid")
      * @ApiReturn   ({
     'code':'1',
     'msg':'返回成功'
@@ -554,19 +555,20 @@ class Order extends Api
     public function pay()
     {
         $order_id = $this->request->post('id');
-        $friend_id = $this->request->post('user_id');
+        $openid = $this->request->post('openid');
         empty($order_id) && $this->error('缺少必需参数');
 
         $model = new \app\api\model\Order();
         $order = $model::get($order_id);
         if (!$order) $this->error('订单不存在');
-//        $openid = Third::get(['user_id'=>$this->auth->id]);
-        $openid = Third::alias('a')
+//        $third = Third::get(['user_id'=>$this->auth->id]);
+        $third = Third::alias('a')
             ->join('user b','b.id = a.user_id')
             ->where('a.user_id',$order['user_id'])
             ->field('a.openid')
             ->find();
-        if (!$openid) $this->error('未注册用户');
+        if (!$third) $this->error('下单人未注册');
+
         $params = [
             'type'         => 'wechat',
             'orderid'      => $order['order_no'],
@@ -574,7 +576,7 @@ class Order extends Api
 //            'amount'       => $order['pay_price'],
             'amount'       => 0.01,
             'method'       => 'miniapp',
-            'openid'       => $openid['openid'],
+            'openid'       => !empty($openid) ? $openid : $third['openid'],
             'notifyurl'    => $this->request->domain().'/api/notify/orderNotify/type/wechat',
             'returnurl'    => '',
         ];