Lifecycle Hooks

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Class Hooks

Each Livewire component undergoes a lifecycle. Lifecycle hooks allow you to run code at any part of the component's lifecyle, or before specific properties are updated.

Hooks Description
mount Runs once, immediately after the component is instantiated, but before render() is called
hydrate Runs on every request, after the component is hydrated, but before an action is performed, or render() is called
hydrateFoo Runs before a property called $foo is hydrated
dehydrate Runs on every request, before the component is dehydrated, but after render() is called
dehydrateFoo Runs before a property called $foo is dehydrated
updating Runs before any update to the Livewire component's data (Using wire:model, not directly inside PHP)
updated Runs after any update to the Livewire component's data (Using wire:model, not directly inside PHP)
updatingFoo Runs before a property called $foo is updated
updatedFoo Runs after a property called $foo is updated
updatingFooBar Runs before updating a nested property bar on the $foo property
updatedFooBar Runs after updating a nested property bar on the $foo property
class HelloWorld extends Component
{
    public $foo;

    public function mount()
    {
        //
    }

    public function hydrateFoo($value)
    {
        //
    }

    public function dehydrateFoo($value)
    {
        //
    }

    public function hydrate()
    {
        //
    }

    public function dehydrate()
    {
        //
    }

    public function updating($name, $value)
    {
        //
    }

    public function updated($name, $value)
    {
        //
    }

    public function updatingFoo($value)
    {
        //
    }

    public function updatedFoo($value)
    {
        //
    }

    public function updatingFooBar($value)
    {
        //
    }

    public function updatedFooBar($value)
    {
        //
    }
}

Javascript Hooks

Livewire gives you the opportunity to execute javascript during certain events.

Hooks Description
component.initialized Called when a component has been initialized on the page by Livewire
element.initialized Called when Livewire initializes an individual element
element.updating Called before Livewire updates an element during its DOM-diffing cycle after a network roundtrip
element.updated Called after Livewire updates an element during its DOM-diffing cycle after a network roundtrip
element.removed Called after Livewire removes an element durting its DOM-diffing cycle
message.sent Called when a Livewire update triggers a message sent to the server via AJAX
message.failed Called if the message send fails for some reason
message.received Called when a message has finished its roudtrip, but before Livewire updates the DOM
message.processed Called after Livewire processes all side effects (including DOM-diffing) from a message
<script>
    document.addEventListener("DOMContentLoaded", () => {
        Livewire.hook('component.initialized', (component) => {})
        Livewire.hook('element.initialized', (el, component) => {})
        Livewire.hook('element.updating', (fromEl, toEl, component) => {})
        Livewire.hook('element.updated', (el, component) => {})
        Livewire.hook('element.removed', (el, component) => {})
        Livewire.hook('message.sent', (message, component) => {})
        Livewire.hook('message.failed', (message, component) => {})
        Livewire.hook('message.received', (message, component) => {})
        Livewire.hook('message.processed', (message, component) => {})
    });
</script>
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