update

app/Repositories/UpgradeRepository.php

@@ -32,8 +32,8 @@ class UpgradeRepository {
     }
     //创建
     public function create($request){
-        $activities = $this->upgrade->where(['os'=>$request['os'],'version'=>$request['version']])->first();
-        if($activities){
+        $upgrade = $this->upgrade->where(['os'=>$request['os'],'version'=>$request['version']])->first();
+        if($upgrade){
             return Response::create([
                 'message'  => '该版本已存在',
                 'status_code'   => 500