Laravel 5中的身份验证：根据用户类型将访问者重定向到不同的页面？

What I've been trying is to have the middleware do different tasks, based on the user's type.

Here is a Route group.

Route::group(array('prefix' => 'api', 'middleware' => 'admin'), function () {
    Route::resource('animal', 'AnimalController');
    //Other resources
});

My User model has 2 types, which can be accessed by the following way.

$this->user()->user_type_id;

Following this advice, I was trying this task, and the handle function in App\Http\Middleware\Authenticate looks like this right now.

 public function handle($request, Closure $next)
{
    if ($this->auth->guest()) {
        if ((Auth::user()->user_type_id == 2) {
            //If the user is of type 2, this will be triggered
            if ($request->ajax()) {
                return response('You are type 2.', 401);
            }
            //Maybe there are other libes here
        } else if ($request->ajax()) {
            return response('Unauthorized.', 401);
        } else {
            return redirect()->guest('auth/login');
        }
    }
    return $next($request);
}

I thought that this would lead the user of type 2 to get response('You are type 2.', 401), when the user visits a URL prefixed by api/animal, but I saw a message Unauthorized. in the response.

Is it possible to have the authentication middleware work in such a way? Any advice will be appreciated.

if ($this->auth->guest()) {
    if ($request->ajax()) {
        return response('Unauthorized.', 401);
    } else {
        return redirect()->guest('auth/login');
    }
} else if ($this->user()->user_type_id == 2) {
    //If the user is of type 2, this will be triggered
    return response('You are type 2.', 401);
}

Try this.