Laravel custom maintenance page dynamically

With the help of this tutorial you can create custom laravel maintenance page. Its will show custom page to all routes but allow all admin/*

1.create a middleware app\Http\Middleware\CustomMaintenanceMiddleware.php

<?php
namespace App\Http\Middleware;
use Closure;
use Illuminate\Http\Request;
class CustomMaintenanceMiddleware
{
    public function checkIfAdmin(){
        if (request()->is('admin') || request()->is('admin/*')) {
            return true;
        }else{
            return false;
        }
    }
    public function handle(Request $request, Closure $next)
    {
        $is_maintence_mode = false;
        if ($is_maintence_mode && !$this->checkIfAdmin()) {
            $data = $this->getDataFromDatabase();
            return response()->view('errors.custom_maintenance', compact('data'), 503);
        }

         return $next($request);
    }
    private function getDataFromDatabase()
    {
         return [];
    }
}

2. Modify app\Exceptions\Handler.php

<?php

namespace App\Exceptions;

use Illuminate\Foundation\Exceptions\Handler as ExceptionHandler;
use App\Http\Middleware\CustomMaintenanceMiddleware;
use Throwable;
class Handler extends ExceptionHandler
{
    protected $dontReport = [
        //
    ];
    public function render($request, Throwable $exception)
    {
        if ($this->isHttpException($exception)) {
            if ($exception->getStatusCode() === 503 && app()->isDownForMaintenance()) {
                $middleware = new CustomMaintenanceMiddleware();
                return $middleware->handle($request, function ($request) {
                    return response('');
                });
            }
        }
        return parent::render($request, $exception);
    }
    protected $dontFlash = [
        'current_password',
        'password',
        'password_confirmation',
    ];
    public function register()
    {
        $this->reportable(function (Throwable $e) {
        });
    }
}

3. cretae a view Resources\views\errors\custom_maintenance.blade.php

Its custom page

4. Modify app\Http\Kernal.php

protected $middlewareGroups = [
        'web' => [
            \App\Http\Middleware\CustomMaintenanceMiddleware::class
        ],
        'api' => [
            'throttle:api',
            \Illuminate\Routing\Middleware\SubstituteBindings::class,
        ],
    ];