Laravel 基于用户角色的登录重定向问题：重定向太多次

Question

I am trying to make code in Laravel using middleware which will redirect user depending on user's role. The issue is I get error: redirected too many times whether user is simple user or admin. I am so far performing check whether user is admin by providing string in middleware, i am not accessing db yet. Any help is greatly appreciated.

Here is my code below:

mid.php (Middleware)

class mid
{
    /**
     * Handle an incoming request.
     *
     * @param  \Illuminate\Http\Request  $request
     * @param  \Closure  $next
     * @return mixed
     */
    public function handle($request, Closure $next)
    {
        if($request->session()->has('user')){
            $user = $request->session()->get('user');
            if($user == "pujan@pujanovic.com"){
                return redirect()->route('adminview');      
            }else{
                return redirect()->route('userview');      
            }
        }else{
            return redirect()->route('login')->with('poruka','Niste administrator!');
        }
        
        return $next($request);
    }
}

Web.php

<?php

/*
|--------------------------------------------------------------------------
| Web Routes
|--------------------------------------------------------------------------
|
| Here is where you can register web routes for your application. These
| routes are loaded by the RouteServiceProvider within a group which
| contains the "web" middleware group. Now create something great!
|
*/

Route::get("/","HomeController@index")->name('index');
Route::get("/login","HomeController@loginview")->name('login');
Route::get("/admin","HomeController@adminview")->name('adminview')->middleware('mid');


Route::post("/login","LoginController@login");

Route::get("/user","HomeController@userview")->name('userview')->middleware('mid');

LoginController.php

<?php

namespace App\Http\Controllers;
use Session;
use Illuminate\Support\Facades\Validator;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\URL;
use App\Models\UserModel;

class LoginController extends Controller
{
    //
    
    public function login(Request $request){
        $email=$request->input('email');
        $password=$request->input('password');

        $this->validate($request,[
        'email'=>'required',
        'password'=>'required'
        ]);
        
        $pass=md5($password);
        $data=DB::SELECT("SELECT * FROM users where email=? and password=?",[$email,$password]);
        
        if (count($data)){
            session()->put('user',$email);
            $value=session('user');
        
        return redirect()->route('userview');
        }else{
            return redirect()->route('login')->with('success','wrong data');
            
        }
        
    }
}

Answer 1

Your middleware will redirect a user who isn't "pujan@pujanovic.com" to the userview route. You have this middleware assigned to the userview route.

So if there is a user in the session and they are not "pujan@pujanovic.com" they will get into an endless loop being redirected to the same route, then the middleware will redirect them to the same route again, in a loop.

This is also an issue for when you have this assigned to the adminview . If you are the "admin" and you try to hit that route, you will also end up in an endless loop.

In short you are telling it to redirect endlessly.

This middleware will never let anyone get to the destination route. It can only redirect to somewhere else.

Update:

Here is a rough idea of what you could do for an Admin check middleware

Admin Middleware:

public function handle($request, $next)
{
    // an auth middleware could handle this itself
    if (! ($email = $request->session()->get('user'))) {
        // not logged in at all
        return redirect()->route('login');
    } 

    if ($email != 'admin@email.com') {
        // not the admin user
        // redirect them away
        return redirect()->route(...);
    }

    // let the request pass through as we have determined they are the admin
    return $next($request);
}

This middleware would get assigned to a route that you only want the admin to be able to access.