Add Publish Route For Publish Action

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('/', function () {
    return view('welcome');
});


Route::group(['prefix' => 'admin'], function () {
    
    Route::get('posts/publish','Voyager\PostController@publish')->name('posts.publish');
    Voyager::routes();
});