抢礼物，优化

application/api/controller/Grabgift.php

@@ -86,7 +86,7 @@ class Grabgift extends Api
 
         //扣钱
         Db::startTrans();
-        $grab_info = Db::name('grabgift')->where('id',$grab_id)->find();
+        $grab_info = Db::name('grabgift')->where('id',$grab_id)->lock(true)->find();
         $rs_wallet = model('wallet')->lockChangeAccountRemain($this->auth->id,$grab_info['price'],'-',0,'抽礼物第'.$grab_id.'期',38,'jewel');
         if($rs_wallet['status'] === false){
             Db::rollback();
@@ -131,9 +131,9 @@ class Grabgift extends Api
 
             //修改
             $nowtime = time();
+            $rs3 = Db::name('grabgift')->where('id',$grab_id)->update(['status'=>1,'grabtime'=>$nowtime]);
             $rs1 = Db::name('grabgift_log')->where('grab_id',$grab_id)->update(['grabtime'=>$nowtime]);
             $rs2 = Db::name('grabgift_log')->where('grab_id',$grab_id)->where('user_id',$winer_uid)->update(['grabstatus'=>1]);
-            $rs3 = Db::name('grabgift')->where('id',$grab_id)->update(['status'=>1,'grabtime'=>$nowtime]);
 
             //发放到背包
             $gift_info = Db::name('gift')->where('id',$grab_info['gift_id'])->find();