Php 登录后未定义变量的问题

我在Laravel5.7上有一个项目，我在登录后创建了一个自定义的admin（admin.blade.php）页面，只是在我的Users表上添加了userlevel列，我在admin.blade上有了下一个foreach

admin.blade.php

@foreach($customers as $customer)
 <h3><b>{{$customer->count('id')}}</b></h3>
 @break
@endforeach

Route::get('/', function () {
    if($user = Auth::user())
    {
        if(Auth::user()->userlevel == "admin"){
            return view('/admin');
        }

    }

    return view('/auth/login');
});

Route::get('/admin', 'HomeController@index')->name('admin');

use App\customers;
use App\pawns;

public function index()
    {
        $customers = customers::all();
        $pawns = pawns::all();
        return view('admin', compact('customers'), ['customers' => $customers,'pawns'=>$pawns]);
    }

public function handle($request, Closure $next, $guard = null)
    {
        if (Auth::guard($guard)->check()) {
            if ($guard == 'admin') {
                return redirect()->route('/admin');
            }
         
        }

        return $next($request);
    }

HomeController.php

@foreach($customers as $customer)
 <h3><b>{{$customer->count('id')}}</b></h3>
 @break
@endforeach

Route::get('/', function () {
    if($user = Auth::user())
    {
        if(Auth::user()->userlevel == "admin"){
            return view('/admin');
        }

    }

    return view('/auth/login');
});

Route::get('/admin', 'HomeController@index')->name('admin');

use App\customers;
use App\pawns;

public function index()
    {
        $customers = customers::all();
        $pawns = pawns::all();
        return view('admin', compact('customers'), ['customers' => $customers,'pawns'=>$pawns]);
    }

public function handle($request, Closure $next, $guard = null)
    {
        if (Auth::guard($guard)->check()) {
            if ($guard == 'admin') {
                return redirect()->route('/admin');
            }
         
        }

        return $next($request);
    }

RedirectIfAuthenticated.php

@foreach($customers as $customer)
 <h3><b>{{$customer->count('id')}}</b></h3>
 @break
@endforeach

Route::get('/', function () {
    if($user = Auth::user())
    {
        if(Auth::user()->userlevel == "admin"){
            return view('/admin');
        }

    }

    return view('/auth/login');
});

Route::get('/admin', 'HomeController@index')->name('admin');

use App\customers;
use App\pawns;

public function index()
    {
        $customers = customers::all();
        $pawns = pawns::all();
        return view('admin', compact('customers'), ['customers' => $customers,'pawns'=>$pawns]);
    }

public function handle($request, Closure $next, $guard = null)
    {
        if (Auth::guard($guard)->check()) {
            if ($guard == 'admin') {
                return redirect()->route('/admin');
            }
         
        }

        return $next($request);
    }

如果我登录了，并且没有显示变量$customers的错误，我如何解决我再次打开的所有问题URL，这将显示admin.blade.php

---

感谢

这是因为它无法使用客户变量，compact是用于合并数组的php函数，第三个参数用于合并数据，您不需要传递第三个参数，而是像这样更新主控制器中的代码

use App\customers;
use App\pawns;

public function index()
    {
        $customers = customers::all();
        $pawns = pawns::all();
        return view('admin',['customers'=>$customers,'pawns'=>$pawns]);
            Or
       return view('admin',compact('customers','pawns'));
    }

---

compact（'customers'，'pawns'）

将是重复数组的简写……是的，两者都正确。您也可以将您的路由文件粘贴到这里吗？