Example of a Forest Smart Action on Laravel 5.5.x+

forestSmartActionLaravel.php

<!-- config/forest.php -->
<?php

return [
  'secret_key' => '7a3049f8cd14e719c219e6d75e2a7715eef38bf6ec4be2ffc774a3374c9196a8',
  'auth_key' => 'l8oeFltNrdrbq6pPeEGzxbG47h2qCK46',
  'models_path' => 'app',
  'url' => 'http://localhost:3001',
  'debug_mode' => true,
  'actions' => [
    'AppUser' => [
      ['name' => 'ban']
    ]
  ]
];

<!-- app/Providers/RouteServiceProvider.php -->
<?php

namespace App\Providers;

use Illuminate\Support\Facades\Route;
use Illuminate\Foundation\Support\Providers\RouteServiceProvider as ServiceProvider;

class RouteServiceProvider extends ServiceProvider
{
    /**
     * This namespace is applied to your controller routes.
     *
     * In addition, it is set as the URL generator's root namespace.
     *
     * @var string
     */
    protected $namespace = 'App\Http\Controllers';

    /**
     * Define your route model bindings, pattern filters, etc.
     *
     * @return void
     */
    public function boot()
    {
        //

        parent::boot();
    }

    /**
     * Define the routes for the application.
     *
     * @return void
     */
    public function map()
    {
        $this->mapApiRoutes();

        $this->mapWebRoutes();

        // Add this
        $this->mapForestRoutes();
    }

    /**
     * Define the "web" routes for the application.
     *
     * These routes all receive session state, CSRF protection, etc.
     *
     * @return void
     */
    protected function mapWebRoutes()
    {
        Route::middleware('web')
             ->namespace($this->namespace)
             ->group(base_path('routes/web.php'));
    }

    /**
     * Define the "api" routes for the application.
     *
     * These routes are typically stateless.
     *
     * @return void
     */
    protected function mapApiRoutes()
    {
        Route::prefix('api')
             ->middleware('api')
             ->namespace($this->namespace)
             ->group(base_path('routes/api.php'));
    }

    // Add this
    protected function mapForestRoutes()
    {
      Route::prefix('forest/actions')
           ->middleware('auth.forest')
           ->namespace($this->namespace)
           ->group(base_path('routes/forest.php'));
    }
}

<!-- routes/forest.php -->
<?php

Route::post('ban', 'UsersController@ban');

<!-- app/Http/Controllers/UsersController.php -->
<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;
use Illuminate\Support\Facades\Response as Response;
use ForestAdmin\ForestLaravel\Logger;

class UsersController extends Controller {
    public function ban(Request $request) {
        Logger::debug('UsersController@ban');

        // $id = $request->input('data')['attributes']['ids'][0];

        // $user = User::find($id);
        // $user->banned = true;
        // $user->save();

        return Response::make('OK', 204);
    }
}