Sharing Livewire validation data with AlpineJS

I build this project to be a proof of concept for sharing Livewire validation state with AlpineJS components. .env and prebuilt assets are included to ease the project startup process, feel free to change as needed.

Installation

Clone the repo to a local folder and install the composer dependencies.

> composer install

Next, install the NPM dependencies

> npm i
> npm run build

Lastly, start up the Laravel server and access the site from your browser.

> php artisan serve

  INFO  Server running on [http://127.0.0.1:8000].

  Press Ctrl+C to stop the server

Overview

The local component demonstrates a Livewire component tracking and handling its own error states. There is a 'global' bit of code that is used to dispatch the error messages to the proper components, however.

Here's the meat of it:

document.addEventListener("DOMContentLoaded", () => {
    Livewire.hook('message.processed', (message, component) => {
        let alpineComponent = Alpine.$data(component.el);

        // Make sure we aren't going to call an invalid alpine component
        if(alpineComponent.processValidation) {
            alpineComponent.processValidation(message.response.serverMemo.errors);
        }
    })
});

Reference: Livewire docs - Lifecycle Hooks

It's pretty simple, actually. This block of code will catch Livewire messages after they've been processed forward the message to the corresponding component with an updated validation state. If the errors are empty, there's no validation errors.

In the Livewire component, we've added the x-wire-errors attribute which enables all the features from the package. You can read what's available at the repo's README.

The real important bit is to set the listener on the root Livewire element. Like so:

<div wire:id="wIhowMna8Zh2UxDqhWeq" x-data x-wire-errors >
    <~-- The rest of the component -->
</div>

In the demo, the Age field will be evaluated after the user blurs the input and a message will be displayed next to the input field label.