Bisame/bisame/app/Http/Middleware/Admin.php

<?php

namespace App\Http\Middleware;

use Closure;

class Admin
{
    /**
     * Handle an incoming request.
     *
     * @param  \Illuminate\Http\Request  $request
     * @param  \Closure  $next
     * @return mixed
     */
    public function handle($request, Closure $next)
    {
        if ($request->user()->admin)
		{
			return $next($request);
		}
		return new RedirectResponse(url('post/liste'));
    }
}