By Riazul Islam · · 2 min read · 221 views
Events allow you to decouple your application logic.
Trigger an event when something happens
Handle it later in a listener
Use Cases:
Sending email after user registration
Logging activity
Broadcasting notifications
Updating analytics
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Generate an event:
php artisan make:event UserRegisteredapp/Events/UserRegistered.php:
<?php
namespace App\Events;
use App\Models\User;
use Illuminate\Queue\SerializesModels;
use Illuminate\Foundation\Events\Dispatchable;
class UserRegistered
{
use Dispatchable, SerializesModels;
public $user;
public function __construct(User $user)
{
$this->user = $user;
}
}Event carries data ($user) to listeners
Generate listener:
php artisan make:listener SendWelcomeEmail --event=UserRegisteredapp/Listeners/SendWelcomeEmail.php:
<?php
namespace App\Listeners;
use App\Events\UserRegistered;
use Illuminate\Support\Facades\Mail;
class SendWelcomeEmail
{
public function handle(UserRegistered $event)
{
Mail::raw('Welcome to Laravel Events!', function ($message) use ($event) {
$message->to($event->user->email)
->subject('Welcome Email');
});
}
}handle() → executes when the event is triggered
In app/Providers/EventServiceProvider.php:
protected $listen = [
\App\Events\UserRegistered::class => [
\App\Listeners\SendWelcomeEmail::class,
],
];Laravel automatically listens for this event
Trigger event in controller (e.g., after user registration):
use App\Events\UserRegistered;
public function register(Request $request)
{
$user = User::create($request->all());
event(new UserRegistered($user)); // Trigger event
return redirect('/dashboard');
}Event fired immediately
Listener executes logic asynchronously (optional with queues)
You can queue listeners for background processing:
class SendWelcomeEmail implements ShouldQueue
{
use InteractsWithQueue, Queueable;
}Avoids blocking HTTP request
Works with Laravel queue system
Events can be broadcasted to frontend using Laravel Echo:
class UserRegistered implements ShouldBroadcast
{
public $user;
public function __construct(User $user)
{
$this->user = $user;
}
public function broadcastOn()
{
return new Channel('users');
}
}Enables real-time notifications in SPA apps or chat apps
This week you learned:
What events & listeners are in Laravel
How to create and trigger events
How to handle logic in listeners
Optional: queue listeners for background tasks
Optional: broadcast events for real-time apps
👉 Next Week : Laravel Notifications & Mail System