Laravel 5.1中间件用户键入重定向

我正在尝试在Laravel 5.1中制作一个应用程序。

在我的用户表中，我有三种类型的用户，管理员、代理和农民。在users表中有一个名为user_type_id的列，其中admin是user_type_id=1，agent是user_type_id=2，farmer是user_type_id=3。

管理员有权在代理几乎没有权限的情况下执行所有操作。

问题是，在使用中间件时，我的Authenticate.php和AgentAuthenticate.php中间件文件表现得好像它们是一样的，这意味着代理获得了管理的所有权限。有逻辑错误吗？这是代码。

agentAuthenticate.php（中间件）

 public function handle($request, Closure $next)
    {
        if ($this->auth->guest()) {
            if ($request->ajax()) {
                return response('Unauthorized.', 401);
            } else {
                return redirect()->guest('auth/login');
            }
        }
        if(! $this->auth->user()->user_type != 2) {
         return redirect()->guest('auth/login');   
        }
        return $next($request);
    } 

Authenticate.php

public function handle($request, Closure $next)
    {
        if ($this->auth->guest()) {
            if ($request->ajax()) {
                return response('Unauthorized.', 401);
            } else {
                return redirect()->guest('auth/login');
            }
        }
        if(! $this->auth->user()->user_type != 1) {
         return redirect()->guest('auth/login');   
        }
        return $next($request);
    }

routes.php

 //guest routes
    Route::resource('/farmerPoint','farmerPointController',['only' => ['index', 'show']]);
    Route::resource('/crop','cropController',['only' => ['index', 'show']]);
    //Admin routes
    Route::group(['middleware' => 'auth'], function () {
    Route::resource('agent','agentController');
    Route::resource('farmer','farmerController');
    Route::resource('farmer.crop','farmerCropController');
    Route::resource('cropType','cropTypeController');
    Route::resource('crop','cropController',['except' => ['index','show']]);
    Route::resource('farmerPoint','farmerPointController',['except' => ['index','show']]);
    Route::get('/AdminPanel',function(){
       return view('frontend.AdminPanel');
      });
    });
    //agent routes
       Route::group(['middleware' => 'agent'], function () {
       Route::resource('farmer','farmerController');
       Route::resource('farmer.crop','farmerCropController');
       Route::resource('agent','agentController',['only' => ['index','show']]);
       Route::get('/AgentPanel',function(){
        return view('frontend.AgentPanel'); 
       });
    });