Core Event Package

This package is responsible for handling all events in the system.

Installation

composer require raid/core-event

Configuration

php artisan core:publish-event

Usage

class UserController extends Controller
{
    /**
     * Invoke the controller method.
     */
    public function __invoke(Request $request)
    {
        $user = User::create($request->only(['name', 'email', 'password']));
        
        // let's trigger the create event.
        User::events('create', $user);
        
        // or using the trigger method
        User::events()->trigger('create', $user);

        // using the facade
        Events::trigger('user.create', $user);
        
        // using the helper
        events()->trigger('user.create', $user);
    }
}

How to work this

Let's start with our eventable class User.

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Model;
use Raid\Core\Event\Traits\Event\Eventable;

class User extends Model
{
    use Eventable;
}

To define the eventable class ex:User model events, we have two ways:

Define getEvents method.

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Model;
use Raid\Core\Event\Traits\Event\Eventable;
use App\Events\CreateUserEvent;

class User extends Model
{
    use Eventable;
    
    /**
     * Get eventable events.
     */
    public static function getEvents(): array
    {
        return [
            // here we define our event classes.
            CreateUserEvent::class,
        ];
    }
}

Define config/event.php events.

'events' => [
    // here we define our eventable class.
    User::class => [
        // here we define our event classes.
        CreateUserEvent::class,
    ],
],

Now, let's create our event class CreateUserEvent.

you can use this command to create the event class.

php artisan core:make-event CreateUserEvent

Here is the event class.

<?php

namespace App\Events;

use Raid\Core\Event\Events\Contracts\EventInterface;
use Raid\Core\Event\Events\Event;

class CreateUserEvent extends Event implements EventInterface
{
    /**
     * {@inheritdoc}
     */
    public const ACTION = '';

    /**
     * {@inheritdoc}
     */
    public const LISTENERS = [];
}

The event class must implement EventInterface interface.

The event class must extend Event class.

The event class must define ACTION constant, which is the event action name.

The LISTENERS constant is an array of listener classes that will be called when the event is triggered.

Now, let's create our event listener CreateUserListener.

you can use this command to create the event listener class.

php artisan core:make-listener CreateUserListener

<?php

namespace App\Listeners;

use Raid\Core\Event\Events\Contracts\EventListenerInterface;

class CreateUserListener implements EventListenerInterface
{
    /**
     * Initialize the listener.
     */
    public function init(): void
    {
    }

    /**
     * Handle the listener.
     */
    public function handle(): void
    {
    }
}

The event listener class must implement EventListenerInterface interface.

The init method is the method that will be called when the event listener is initialized.

The handle method is the method that will be called when the event is triggered.

Let's finish our event class and listener class.

<?php

namespace App\Events;

use Raid\Core\Event\Events\Contracts\EventInterface;
use Raid\Core\Event\Events\Event;

class CreateUserEvent extends Event implements EventInterface
{
    /**
     * {@inheritdoc}
     */
    public const ACTION = 'create';

    /**
     * {@inheritdoc}
     */
    public const LISTENERS = [
        CreateUserListener::class,
    ];
}

<?php

namespace App\Listeners;

use App\Models\User;
use Raid\Core\Event\Events\Contracts\EventListenerInterface;

class CreateUserListener implements EventListenerInterface
{
    /**
     * Handle the listener.
     */
    public function handle(User $user): void
    {
        // here we can do many things with the event given arguments.
    }
}

Now, let's trigger the event with its listeners.

<?php

namespace App\Http\Controllers;

use App\Models\User;

class UserController extends Controller
{
    /**
     * Invoke the controller method.
     */
    public function __invoke(Request $request)
    {
        $user = User::create($request->only(['name', 'email', 'password']));
    
        User::events()->trigger('create', $user);
    }
}

The events method is a static method that will be called from the Eventable trait.

The trigger method is a method that will be called from the Events and Listeners related to the triggered action.

This will call the handle method in each listener related to the triggered event action without calling the init method.

And that's it.

License

The MIT License (MIT). Please see License File for more information.

Credits

Mohamed Khedr

Security

If you discover any security-related issues, please email instead of using the issue tracker.

About Raid

Raid is a PHP framework created by Mohamed Khedr and it is maintained by Mohamed Khedr.

Support Raid

Raid is an MIT-licensed open-source project. It's an independent project with its ongoing development made possible.

raid/core-event

Raid Core Event