I am a learner and this article serve as my personal notes documenting what I've learned so far. I welcome any feedback, suggestions, or additional insights from more experienced developers. If you have any notes or comments, please feel free to leave them in the comments section. . Your feedback are greatly appreciated!

What is a service provider

Serivce providers are just classes to register some global functionalities.

This image illustrates the Laravel request lifecycle, that shows that Service providers are registered and booted at the beginning of every Laravel application. As mentioned in the article linked here, all service providers listed in config/app.php are executed twice, following a top-to-bottom iteration.

The first iteration is looking for an optional method register() which may be used to initiate something before the boot() method.

Then, the second iteration executes the boot() method of all providers. Again, one by one, from top to bottom of the 'providers' array.

And then, after all the service providers have been processed, Laravel goes to parsing the route, executing the Controller, using Models, etc.

In the filament documentation, they mention the following:

You may customize navigation groups by calling Filament::registerNavigationGroups() from the boot() method of any service provider

This means that it is not necessary to use a specific service provider class; however, for better organization, we use service classes. Povilas Korop explains this in his video link

Creating a Custom Service Provider

To create a custom service provider, you can follow these steps:

Generate the ViewServiceProvider using the following command:

php artisan make:provider ViewServiceProvider

In the ViewServiceProvider class, define the boot method as shown below to make a blade directive global:

public function boot(): void
{
  Blade::directive('greeting', function ($expression) {
  return "<?php echo 'Hello ' . ($expression); ?>";
  });
}

Include the service provider in the config/app.php file, under the providers array:

'providers' => ServiceProvider::defaultProviders()->merge([
App\Providers\AppServiceProvider::class,
App\Providers\AuthServiceProvider::class,
// App\Providers\BroadcastServiceProvider::class,
App\Providers\EventServiceProvider::class,
App\Providers\RouteServiceProvider::class,
ViewServiceProvider::class,
])->toArray(),

Laravel Service Providers Notes

What is a service provider

Creating a Custom Service Provider

Links