ldc-supportweb/app/Http/Middleware/IsAdmin.php

<?php

namespace App\Http\Middleware;

use Closure;
use Illuminate\Http\Request;

class IsAdmin
{
    /**
     * Handle an incoming request.
     *
     * @param  \Illuminate\Http\Request $request
     * @param  \Closure                 $next
     * @return mixed
     */
    public function handle(Request $request, Closure $next)
    {
        /** @var \App\Models\User */
        $user = auth()->user();
        if ($user->isAdmin()) {
            return $next($request);
        }
        return redirect()->route('bo.home');
    }
}