README

WARNING!

This package is currently under active development. It is not recommended for use in production environments due to potential instability.

Requirements

Make sure that your server is configured with following PHP version and extensions:

• PHP 8.1+
• Spiral framework 3.7+

Installation

You can install the package via composer:

composer require spiral-packages/livewire

To enable the package in your Spiral Framework application, you will need to add the Spiral\Livewire\Bootloader\LivewireBootloader class to the list of bootloaders in your application:

protected const LOAD = [
    // ...
    \Spiral\Livewire\Bootloader\LivewireBootloader::class,
];

Note If you are using spiral-packages/discoverer, you don't need to register bootloader by yourself.

Template engines

Twig

To get started with Livewire and Twig in Spiral Framework application, need to add the Spiral\Livewire\Bootloader\TwigBootloader class to the list of bootloaders in your application.

Here's an example of how to do that:

    // ...
    \Spiral\Livewire\Bootloader\TwigBootloader::class,

When the TwigBootloader is registered, it provides the Spiral\Livewire\Twig\Extension\LivewireExtension extension that allows to use the livewire_styles, livewire_scripts, livewire Twig functions.

• livewire_styles and livewire_scripts - These functions are used to include the required Livewire CSS and JavaScript code.
• livewire - This function takes the name of the component as the first parameter and renders the initial state of the component. Subsequent parameters will be passed to the component's mount method.

Stempler

To get started with Livewire and Stempler in Spiral Framework application, need to add the Spiral\Livewire\Bootloader\StemplerBootloader class to the list of bootloaders in your application.

Here's an example of how to do that:

    // ...
    \Spiral\Livewire\Bootloader\StemplerBootloader::class,

When the StemplerBootloader is registered, it provides the Spiral\Livewire\Template\Stempler\LivewireDirective directive that allows to use the livewireStyles, livewireScripts directives and Spiral\Livewire\Template\Stempler\NodeVisitor that can render a Livewire component on a page using the <livewire:name /> tag syntax.

• livewireStyles and livewireScripts - These functions are used to include the required Livewire CSS and JavaScript code.

Configuration

The configuration file should be located at app/config/livewire.php, and it allows you to set options. Here is an example of how the configuration file might look:

use Spiral\Events\Config\EventListener;
use Spiral\Livewire\Component\Registry\Processor\AttributeProcessor;
use Spiral\Livewire\Event\Component\ComponentHydrateSubsequent;
use Spiral\Livewire\Listener\Component\SupportChildren;
use Spiral\Livewire\Listener\Component\SupportLocales;
use Spiral\Livewire\Middleware\Component\CallHydrationHooks;
use Spiral\Livewire\Middleware\Component\CallPropertyHydrationHooks;
use Spiral\Livewire\Middleware\Component\HydrateModelProperties;
use Spiral\Livewire\Interceptor\Mount\CycleInterceptor;
use Spiral\Livewire\Interceptor\Mount\TypecasterInterceptor;

return [
    'listeners' => [
        // ...
        ComponentHydrateSubsequent::class => [
            new EventListener(
                listener: SupportLocales::class,
                method: 'onComponentHydrateSubsequent',
                priority: 10
            ),
            new EventListener(
                listener: SupportChildren::class,
                method: 'onComponentHydrateSubsequent',
                priority: 20
            ),
        ],
        // ...
    ],
    'interceptors' => [
        'mount' => [
            CycleInterceptor::class,
            TypecasterInterceptor::class,
        ],
        'boot' => []
    ],
    'initial_hydration_middleware' => [
        // ...
        CallHydrationHooks::class,
        // ...
    ],
    'hydration_middleware' => [
        // ...
        HydrateModelProperties::class,
        // ...
    ],
    'initial_dehydration_middleware' => [
        // ...
        CallPropertyHydrationHooks::class,
        // ...
    ],
    'dehydration_middleware' => [
        // ...
        CallPropertyHydrationHooks::class,
        // ...
    ],
    'processors' => [
        // ...
        AttributeProcessor::class,
        // ...
    ],
    'disable_browser_cache' => true,
];

Notice The package is configured by default and does not require any additional configuration. Use the config file only if you need to change the default configuration.

Warning The order of all middleware is important! The correct order can be viewed in the default configuration here: src/Bootloader/ConfigBootloader.php

Usage

Add the required Livewire CSS and JavaScript code:

Twig

<!DOCTYPE html>
<html lang="@{locale}">
    <head>
        // ...
        {{ livewire_styles() }}
    </head>
    <body>
        {% block body %}{% endblock %}
        {{ livewire_scripts() }}
    </body>
</html>

Stempler

<!DOCTYPE html>
<html lang="@{locale}">
<head>
    // ...
    @livewireStyles
</head>
<body>
    // ...
    @livewireScripts
</body>
</html>

Lets create a simple Livewire component Counter:

namespace App\Endpoint\Web\Livewire\Component;

use Spiral\Livewire\Attribute\Component;
use Spiral\Livewire\Attribute\Model;
use Spiral\Livewire\Component\LivewireComponent;

#[Component(name: 'counter', template: 'components/counter')]
final class Counter extends LivewireComponent
{
    #[Model]
    public int $count = 0;

    public function increment(): void
    {
        $this->count++;
    }
}

Create a template:

<div style="text-align: center">
    <button wire:click="increment">+</button>
    <h1>{{ count }}</h1>
</div>

Call the Livewire component anywhere in your template.

Twig

{{ livewire('counter') }}

Stempler

<livewire:counter />

Now reload the page in the browser, you should see the counter component rendered. If you click the "+" button, the page should automatically update without a page reload.

Validation

The first step in enabling validation in your Livewire components is to make sure that spiral\validator or spiral-packages/laravel-validator packages are installed and properly configured in your application. Once you have ensured that the validator package is installed, you will need to add the Spiral\Livewire\Bootloader\ValidationBootloader class to the list of bootloaders in your application:

protected const LOAD = [
    // ...
    \Spiral\Livewire\Bootloader\ValidationBootloader::class,
];

After adding the ValidationBootloader class, you must implement the Spiral\Livewire\Validation\ShouldBeValidated interface in your Livewire component and define the validationRules method to specify your validation rules. This method should return an array of validation rules for each property that requires validation. Validation rules must be in the format supported by the validator you are using.

Notice Validation rules are described in the Spiral Validator, Laravel Validator documentation.

For example, if you want to validate the name and email fields of a ContactForm component, you could define the component like this.

Spiral Validator

namespace App\Endpoint\Web\Livewire\Component;

use Spiral\Livewire\Attribute\Component;
use Spiral\Livewire\Attribute\Model;
use Spiral\Livewire\Component\LivewireComponent;
use Spiral\Livewire\Validation\ShouldBeValidated;

#[Component(name: 'contact-form', template: 'components/contact-form.twig')]
final class ContactForm extends LivewireComponent implements ShouldBeValidated
{
    #[Model]
    public string $name;

    #[Model]
    public string $email;

    public function submit(): void
    {
        // This method will only be called if all the data is valid
    }

    public function validationRules(): array
    {
        return [
            'name' => ['required'],
            'email' => ['required', 'email']
        ];
    }

Laravel Validator

namespace App\Endpoint\Web\Livewire\Component;

use Spiral\Livewire\Attribute\Component;
use Spiral\Livewire\Attribute\Model;
use Spiral\Livewire\Component\LivewireComponent;
use Spiral\Livewire\Validation\ShouldBeValidated;

#[Component(name: 'contact-form', template: 'components/contact-form.twig')]
final class ContactForm extends LivewireComponent implements ShouldBeValidated
{
    #[Model]
    public string $name;

    #[Model]
    public string $email;

    public function submit(): void
    {
        // This method will only be called if all the data is valid
    }

    public function validationRules(): array
    {
        return [
            'name' => 'required',
            'email' => 'required|email'
        ];
    }

In this examples, the validationRules method returns an array of rules that specify that both name and email are required fields, and that the email field must be a valid email address.

• Validator can validate only single property when the property is updated. If the component is configured to update the data when the field changes. For example, a validator might validate an Email and display an error before the user clicks the Submit button.
• Before calling the component method, the validator will check all the data and only call the method if all data is valid.

Interceptors

Spiral provides a way for developers to customize the behavior of their executing boot and mount methods through interceptors. An interceptor is a piece of code that is executed before or after a mount or boot method is called.

Some interceptors are provided by the package and enabled by default.

• Spiral\Livewire\Interceptor\Mount\CycleInterceptor - This is mount interceptor. Automatically resolves Cycle entities based on given parameter.
• Spiral\Livewire\Interceptor\Mount\TypecasterInterceptor - This is mount interceptor. Automatically converts the parameters passed to the mount method to the required type (bool, int, float, array).

Notice The CycleInterceptor requires Cycle ORM Bridge. If you don't use it, the interceptor will not be activated.

You can create an interceptor yourself and register it in the config file.

namespace App\Interceptor;

use Spiral\Core\CoreInterceptorInterface;
use Spiral\Core\CoreInterface;
use Spiral\Livewire\Component\LivewireComponent;

class SomeInterceptor implements CoreInterceptorInterface
{
    /**
     * @param class-string $controller Component class name
     * @param string $action method (boot or mount)
     * @param array{
     *     component: LivewireComponent,
     *     reflection: \ReflectionMethod,
     *     parameters: array
     * } $parameters Array with additional parameters.
     *  For the mount method, contains an array with the parameters that were passed to it.
     */
    public function process(string $controller, string $action, array $parameters, CoreInterface $core): mixed
    {
        // Some code before calling method mount or boot

        $core->callAction($controller, $action, $parameters);

        // Some code after calling method mount or boot

        return null;
    }
}

// file app/config/livewire.php
use App\Interceptor\SomeInterceptor;
use Spiral\Livewire\Interceptor\Mount\CycleInterceptor;
use Spiral\Livewire\Interceptor\Mount\TypecasterInterceptor;

return [
    'interceptors' => [
        'mount' => [
            SomeInterceptor::class,
            CycleInterceptor::class,
            TypecasterInterceptor::class,
        ],
        'boot' => [
            SomeInterceptor::class,
        ]
    ],
];

Testing

composer test

composer psalm

composer cs

Changelog

Please see CHANGELOG for more information on what has changed recently.

License

The MIT License (MIT). Please see License File for more information.