Laravel extends provider class set by composer

Question

Hi, I am using the following https://github.com/jayhealey/Robots package to add another robots.txt file for each environment that I have in my application. However, this is missing one of the methods that I use in my application, which is a traversal delay i.e.

Crawl-delay: 3600

Now I have the following folder from installing this package:

provider / healey / robots / src / Healey / Robots / Robots.php and it starts as follows:

 <?php namespace Healey\Robots; class Robots {....} 

Now I want to extend this class so that I can successfully use the method inside it, but obviously I do not want to add the function to the provider directory, as this is undesirable. So I created the following class:

Application / Library / Helpers / AppRobots.php

and it has the following content:

 <?php use Healey\Robots\Robots; class AppRobots extends Robots { /** * Add crawl Delay to robots.txt. * * @param string $delay */ public function crawlDelay($delay) { $this->addLine("Crawl-delay: $delay"); } } 

Now in routes.php I have the following:

 Route::get('robots.txt', function() { // If on the live server, serve a nice, welcoming robots.txt. if (App::environment() == 'production') { \Robots::addUserAgent('*'); \AppRobots::crawlDelay('3600'); } else { // If you're on any other server, tell everyone to go away. \Robots::addDisallow('*'); } return Response::make(Robots::generate(), 200, array('Content-Type' => 'text/plain')); }); 

Now this causes the following error:

The non-static AppRobots :: crawlDelay () method should not be called static

So, I changed the method to static as follows:

 public static function crawlDelay($delay) { $this->addLine("Crawl-delay: $delay"); } 

However, this results in the following error:

Using $ this, if not in the context of the object, so I updated this to use the following method:

 /** * Add crawl Delay to robots.txt. * * @param string $delay */ public static function crawlDelay($delay) { $robots = new \Robots(); $robots->addLine("Crawl-delay: $delay"); } 

and now I get Call to undefined method Healey\Robots\RobotsFacade::addLine()

This is the RobotsFacade file (provider / healey / robots / src / Healey / Robots / RobotsFacade.php)

 <?php namespace Healey\Robots; use Illuminate\Support\Facades\Facade; class RobotsFacade extends Facade { /** * Get the registered name of the component. * * @return string */ protected static function getFacadeAccessor() { return 'robots'; } } 

and this is a service provider (provider / healey / robots / src / Healey / Robots / RobotsServiceProvider.php)

 <?php namespace Healey\Robots; use Illuminate\Support\ServiceProvider; class RobotsServiceProvider extends ServiceProvider { /** * Indicates if loading of the provider is deferred. * * @var bool */ protected $defer = false; /** * Bootstrap the application events. * * @return void */ public function boot() { $this->package('healey/robots'); } /** * Register the service provider. * * @return void */ public function register() { $this->app['robots'] = $this->app->share(function($app) { return new Robots(); }); $this->app->booting(function() { $loader = \Illuminate\Foundation\AliasLoader::getInstance(); $loader->alias('Robots', 'Healey\Robots\RobotsFacade'); }); } } 

Any ideas how I can successfully extend this class to add an extra method as needed?

Update

Application / Library / CustomRobotsServiceProvider.php

 <?php namespace MyApp\Healey\Robots; use Illuminate\Support\ServiceProvider; class CustomRobotsServiceProvider extends ServiceProvider { public function boot() { } public function register() { $this->app['robots'] = $this->app->share(function($app) { return new AppRobots(); }); } } 

Application / Library / Helpers / AppRobots.php

 <?php namespace MyApp\Healey\Robots; use MyApp\Healey\Robots\CustomRobotsServiceProvider; use Healey\Robots\Robots as Robots; class AppRobots extends Robots { /** * Add crawl Delay to robots.txt. * * @param string $delay */ public static function crawlDelay($delay) { $robot = new Robots(); $robot->addLine("Crawl-delay: $delay"); } } 

app.php in the providers array, I have the following:

  'Healey\Robots\RobotsServiceProvider', 'MyApp\Healey\Robots\CustomRobotsServiceProvider' 

in an array of aliases, I have the following:

  'Robots' => 'Healey\Robots\Robots', 

However, this does not add the Crawl Delay line using this method:

  \Robots::crawlDelay('3600'); 

Any ideas why this line is not written on the robots.txt route? It reaches the penalty method, but does not successfully add this line.

Answer 1

You will need to create your own service provider and overwrite the robots service there so that it uses your class, not the base one.

• Create a service provider

   use Illuminate\Support\ServiceProvider; class CustomRobotsServiceProvider extends ServiceProvider { public function boot() { } public function register() { $this->app['robots'] = $this->app->share(function($app) { return new AppRobots(); }); } } 

• Register your service provider in config / app.php

   'providers' => array( ... some other providers 'Your\Namespace\CustomRobotsServiceProvider' ), 

Make sure your provider is registered after RobotsServiceProvider so that your service overwrites the original, and not vice versa.