Event subscribers in Laravel - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to register an event subscriber class in Laravel's EventServiceProvider.

Laravel

protected $subscribe = [[1]::class];

Drag options to blanks, or click blank then click option'

AUserEventHandler

BUserEventListener

CUserEventSubscriber

DUserEventObserver

Attempts:

3 left

💡 Hint

Common Mistakes

Using event listener class names instead of subscriber class names.

Forgetting to add ::class after the class name.

In Laravel, event subscribers are registered by listing their class names in the $subscribe array in the EventServiceProvider.

2fill in blank

medium

Complete the method name in the subscriber class to listen for the UserRegistered event.

Laravel

public function [1](UserRegistered $event) {
    // handle the event
}

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AsubscribeUserRegistered

BonUserRegistered

ClistenUserRegistered

DhandleUserRegistered

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'handle' prefix which is common in listeners but not subscribers.

Using 'subscribe' which is not a method name for handling events.

Subscriber methods that handle events usually start with 'on' followed by the event name in Laravel.

3fill in blank

hard

Fix the error in the subscriber's subscribe method to register the event handler.

Laravel

public function subscribe(Dispatcher $events) {
    $events->listen(
        UserRegistered::class, 
        [[1]::class, 'onUserRegistered']
    );
}

Drag options to blanks, or click blank then click option'

AUserEventListener

BUserRegisteredListener

CUserRegisteredHandler

DUserEventSubscriber

Attempts:

3 left

💡 Hint

Common Mistakes

Using listener or handler class names instead of the subscriber class.

Passing the event class instead of the subscriber class.

The subscriber class itself is passed as the first element in the listener array to register the handler method.

4fill in blank

hard

Fill both blanks to define the subscribe method and register two event handlers in the subscriber class.

Laravel

public function subscribe(Dispatcher $events) {
    $events->listen(UserRegistered::class, [[1]::class, 'onUserRegistered']);
    $events->listen(UserLoggedIn::class, [[2]::class, 'onUserLoggedIn']);
}

Drag options to blanks, or click blank then click option'

AUserEventSubscriber

BUserEventListener

CUserSubscriber

DUserEventHandler

Attempts:

3 left

💡 Hint

Common Mistakes

Using different class names for each event handler.

Using listener or handler class names instead of subscriber class.

Both event handlers are methods inside the same subscriber class, so the class name is repeated.

5fill in blank

hard

Fill all three blanks to create a subscriber class with the subscribe method registering handlers for three events.

Laravel

class UserEventSubscriber {
    public function subscribe(Dispatcher $events) {
        $events->listen(UserRegistered::class, [[1]::class, 'onUserRegistered']);
        $events->listen(UserLoggedIn::class, [[2]::class, 'onUserLoggedIn']);
        $events->listen(UserLoggedOut::class, [[3]::class, 'onUserLoggedOut']);
    }
}

Drag options to blanks, or click blank then click option'

AUserEventSubscriber

BUserEventListener

CUserSubscriber

DUserEventHandler

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing different class names for event handlers.

Using listener or handler class names instead of subscriber class.

The subscriber class registers all event handlers using its own class name in the subscribe method.