Here are some examples of using events to trigger updates in parent Livewire components:
1. Emitting Events from Child to Parent:
- In the child component, use the `$this->emit()` method to emit an event:
php
class ChildComponent extends Component
{
public function someAction()
{
// Perform some action
$this->emit('childActionPerformed', $data);
}
}
- In the parent component, listen for the event and handle it:
html
<livewire:child-component wire:click="someAction" />
php
class ParentComponent extends Component
{
protected $listeners = ['childActionPerformed'];
public function childActionPerformed($data)
{
// Handle the event and update the parent's state
$this->someParentData = $data;
}
}
2. Emitting Events to Update a Shared State Service:
- Create a Livewire component that acts as a state management service:
php
class StateService extends Component
{
public $someData;
public function updateSomeData($newData)
{
$this->someData = $newData;
$this->emit('stateUpdated');
}
}
- In your parent and child components, inject the StateService and use its methods to manage the shared state:
html
<livewire:state-service />
<livewire:parent-component />
<livewire:child-component />
php
class ParentComponent extends Component
{
public function mount(StateService $stateService)
{
$this->stateService = $stateService;
$this->stateService->addListener('stateUpdated', function () {
$this->someParentData = $this->stateService->someData;
});
}
public function someAction()
{
$this->stateService->updateSomeData($newData);
}
}
class ChildComponent extends Component
{
public function mount(StateService $stateService)
{
$this->stateService = $stateService;
}
public function someAction()
{
$this->stateService->updateSomeData($newData);
}
}
3. Emitting Events to Trigger a Refresh in the Parent:
- In the child component, emit an event to trigger a refresh in the parent:
php
class ChildComponent extends Component
{
public function someAction()
{
// Perform some action
$this->emit('refreshParent');
}
}
- In the parent component, listen for the `refreshParent` event and call the `$refresh` magic method:
html
<livewire:child-component wire:click="someAction" />
php
class ParentComponent extends Component
{
protected $listeners = ['refreshParent' => '$refresh'];
}
These examples demonstrate how you can use events to communicate between parent and child Livewire components, allowing the child to trigger updates in the parent's state or trigger a full component refresh.
Citations:[1] https://livewire.laravel.com/docs/nesting
[2] https://livewire.laravel.com/docs/javascript
[3] https://laracasts.com/discuss/channels/livewire/how-to-pickup-event-from-livewire-child-component
[4] https://laravel-livewire.com/docs/2.x/actions
[5] https://stackoverflow.com/questions/70047849/fire-an-event-from-laravel-controller-and-listen-on-livewire-component