README

This is a PHP package for automatically create Twig components as tags. This is highly inspired from Laravel Blade Components.

Installation

You can install the package via Composer:

composer require havit/twig-components

Configuration

This package work only with Silex and PHP 7.1

$app['twig.options'] = [
    'debug'      => true,
    'cache'      => __DIR__.'/../storage/cache/twig',
    'components' => [
        'path'      => 'components',
        'namespace' => 'App\View',
    ],
];

$app->register(new \App\Provider\TwigComponentsServiceProvider());

To enable the package just pass your Twig environment object to the function and specify your components folder relative to your Twig templates folder.

SILEX

Create Provider

use Pimple\{Container, ServiceProviderInterface};

class TwigComponentsServiceProvider implements ServiceProviderInterface
{
    public function register(Container $app)
    {
        $app->extend('twig', function (\Twig_Environment $twig, $app) {
            $twig->addExtension(new \Havit\TwigComponents\Extension\ComponentExtension($twig));
            $twig->setLexer(new \Havit\TwigComponents\Lexer\ComponentLexer($twig));

            return $twig;
        });
    }

}

Usage

The components are just Twig templates in a folder of your choice (e.g. components) and can be used anywhere in your Twig templates. The slot variable is any content you will add between the opening and the close tag.

Named slots

{# /components/card.twig #}
<div {{ attributes.class('bg-white shadow p-3 rounded') }}>
    <h2 {{ title.attributes.class('font-bold') }}>
        {{ title }}
    </h2>
    <div>
        {{ body }}
    </div>
</div>

{# /index.twig #}
<x-card>
    <x-slot name="title" class="text-2xl">title</x-slot>
    <x-slot name="body">Body text</x-slot>
</x-card>

Also with the standard syntax.

{# /index.twig #}
{% x:card %}
    {% slot:title with {class: "text-2xl"} %}
        Title
    {% endslot %}
    {% slot:body %}
        Title
    {% endslot %}
{% endx %}

Attributes

You can pass any attribute to the component in different ways. To interprate the content as Twig you need to prepend the attribute name with a : but it works also in other ways.

snake-case variables will be converted to kebabCase

Call

<x-button 
    :class="'btn-' ~ 'success'"
    type="{{'this' ~ 'works' ~ 'too'}}" 
    action="or this"
    this="{{'this' ~ 'does'}}{{ 'not work' }}"
    data-key="foo"
>
    Submit
</x-button>

Component

<a href="{{ action }}" {{ attributes.class('btn btn-sm me-3') }} data-type="{{ type }}" data-key="{{ dataKey }}">
    {{ $slot }}
</a>

Compiled

<a href="or this" class="btn btn-sm me-3 btn-success" data-type="thisworkstoo" data-key="foo">
    Submit
</a>

Component Class

<?php

namespace App\View;

use App\Application;

class Test extends \Havit\TwigComponents\View\Component
{

    public $title    = '';

    public function __construct(string $title = 'xyz')
    {
        $this->title = $title;
    }

    public function handle(Application $app)
    {
        // Do something
        $this->title = $app->trans($this->title);
    }

    public function template(): string
    {
        return 'components/test.twig';
    }
}

## Contributing

Pull requests are welcome. For major changes, please open an issue first to discuss what you would like to change.

Please make sure to update tests as appropriate.


## License

The MIT License (MIT). Please see [License File](LICENSE.md) for more information.