过滤0元支付情况

@@ -234,18 +234,21 @@ class Index extends Api
             'description' => $post['description'],
             'date' => $post['date']
         ]);
-        // 发起微信支付
-        $Wechat = new Wechat;
-        $openid = Db::name('third')->where('user_id',$this->auth->id)->value('openid');
-        $notify_url = $this->request->root(true) . '/api/notify/notifyAppointment';
-        if(!$payment = $Wechat->wxPay($appointment['order_sn'], $openid, $pay_fee, $notify_url)){
-            $this->error($Wechat->getError());
+        if($pay_fee <= 0){
+            $payment = [];
+            (new Notify())->notifyAppointmentZero([
+                'out_trade_no' => $appointment['order_sn'],
+                'transaction_id' => ''
+            ]);
+        }else{
+            // 发起微信支付
+            $Wechat = new Wechat;
+            $openid = Db::name('third')->where('user_id',$this->auth->id)->value('openid');
+            $notify_url = $this->request->root(true) . '/api/notify/notifyAppointment';
+            if(!$payment = $Wechat->wxPay($appointment['order_sn'], $openid, $pay_fee, $notify_url)){
+                $this->error($Wechat->getError());
+            }
         }
-//        $payment = [];
-//        (new Notify())->notifyAppointmentZero([
-//            'out_trade_no' => $appointment['order_sn'],
-//            'transaction_id' => ''
-//        ]);
         $this->success('成功',[
             'payment' => $payment,
             'appointment_id' => $appointment['id']