LiveComponent

TwigComponents that re-render dynamically via AJAX. Build reactive UIs in PHP + Twig with zero JavaScript. Every user interaction triggers a server round-trip that re-renders the component and morphs the DOM.

When to Use LiveComponent

Use LiveComponent when a component's output depends on user interaction -- search results that update as you type, forms with real-time validation, filters that refine a list, anything where the UI needs to change based on user input and that change requires server-side data or logic.

If the component never re-renders after initial load, use TwigComponent instead (less overhead, no AJAX). If the interaction is purely client-side (toggle, animation), use Stimulus instead.

Installation

composer require symfony/ux-live-component

Quick Reference