Lifecycle Hooks in Livewire v4

Livewire v4 components have lifecycle hooks that run at specific times.

Complete Lifecycle Example

class UserProfile extends Component
{
    public User $user;
    public string $name;
    public string $email;
    
    // Runs once when component is first created
    public function mount(User $user): void
    {
        $this->user = $user;
        $this->name = $user->name;
        $this->email = $user->email;
    }
    
    // Runs on every request (before hydration)
    public function boot(): void
    {
        // Good for authorization checks
        if (!auth()->user()->can('view', $this->user)) {
            abort(403);
        }
    }
    
    // Runs after component is hydrated from state
    public function hydrate(): void
    {
        // Re-initialize non-persisted data
    }
    
    // Runs before a specific property updates
    public function updatingName($value): void
    {
        $this->name = trim($value);
    }
    
    // Runs after a specific property updates  
    public function updatedName($value): void
    {
        $this->validate(['name' => 'required|min:2']);
    }
    
    // Runs before any property updates
    public function updating($property, $value): void
    {
        logger("Updating {$property} to {$value}");
    }
    
    // Runs after any property updates
    public function updated($property, $value): void
    {
        logger("{$property} updated to {$value}");
    }
    
    public function render(): View
    {
        return view('livewire.user-profile');
    }
}