How to define and use model events (e.g., creating, updating, deleting) in Eloquent in Laravel?

In Laravel, Eloquent provides a way to define and use model events which allow you to attach custom logic to certain actions like creating, updating, and deleting records in your database. Here's how you can define and use model events in Eloquent:

Define the Model Event: Start by defining the model event you want to listen to. Eloquent provides several model events like creating, created, updating, updated, deleting, deleted, etc.
Create a Listener: Create a listener class that will contain the logic you want to execute when the specified model event occurs. You can create a listener using the php artisan make:listener command, or manually create a new class that implements the Illuminate\Contracts\Events\Listener interface.
Register the Listener: Next, you need to register the listener in your EventServiceProvider. This file is located in the app/Providers directory. In the EventServiceProvider, add the listener class to the $listen property, associating it with the specific model event you defined.
Implement the Logic: In your listener class, implement the logic you want to execute when the model event is triggered. This logic can be anything you need, such as updating related records, sending notifications, or performing any other operations.
Fire the Event: Finally, you can manually fire the model event within your code. You can do this by calling the corresponding event method on the model instance Model::creating(), Model::created(), Model::updating(), Model::updated(), Model::deleting(), or Model::deleted().

Here's an example of defining and using the creating model event:

Define the Model Event:

// Model.php
protected static function boot()
{
    parent::boot();

    static::creating(function ($model) {
        // Custom logic to be executed when creating a new record
    });
}

Create a Listener:

php artisan make:listener MyModelCreatingListener

// EventServiceProvider.php
protected $listen = [
    'App\Events\MyModelCreating' => [
        'App\Listeners\MyModelCreatingListener',
    ],
];

Implement the Logic:

// MyModelCreatingListener.php
public function handle(MyModelCreating $event)
{
    // Custom logic to be executed when the 'creating' event occurs
}

Fire the Event:

// SomeController.php
use App\Events\MyModelCreating;

event(new MyModelCreating($myModel));

That's it! You have now defined and used a model event in Eloquent. Repeat the process for other model events if necessary.