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Livewire Plugin

Integrate Laravel Livewire components inside October CMS themes, app and plugins, with templates provided by Twig, Blade or PHP.

Requirements

  • October CMS v3.3.9 or above

Installation

To install with Composer, run this from your project root.

composer require rainlab/livewire-plugin

Rendering Livewire Components

Use the livewire CMS component to activate Livewire in your CMS theme page or layout. For example, your page may look like this.

url = "/test"
layout = "default"

[livewire]
==
<div class="container">
    {% livewire 'counter' %}
</div>

Next, render a Livewire component using the {% livewire %} Twig tag.

{% livewire 'counter' %}

You may pass variables to the component using an equal sign (=).

{% livewire 'counter' count=3 %}

Note: For proper operation, your CMS layout should include the {% styles %} and {% scripts %} placeholder tags, as described in the placeholder documentation.

File Locations

By default, classes are stored in the app/Livewire directory. However, you can register custom classes within plugins (see below).

Views are stored in the in app/views/livewire directory by default. The following template syntaxes are supported in the views directory, determined by their file extension.

Extension Template Engine
.htm October Twig
.blade.php Laravel Blade
.php PHP Template

Plugin Registration

To register Livewire components in your plugins using the registerLivewireComponents override method. The method should return a class name as the key and the component alias as the value.

public function registerLivewireComponents()
{
    return [
        \October\Demo\Livewire\Todo::class => 'demoTodo'
    ];
}

In the above example, the October\Demo\Livewire\Todo class refers to the following file locations:

  • Class file: plugins/october/demo/livewire/Todo.php
  • View file: plugins/october/demo/views/livewire/todo.htm.

The class should return its view path by overriding the render method, and returns a View instance relative to the plugin.

namespace October\Demo\Livewire;

use RainLab\Livewire\Classes\LivewireBase;

class Todo extends LivewireBase
{
    public function render()
    {
        return \View::make('october.demo::livewire.todo');
    }
}

The component can be rendered anywhere using the demoTodo alias.

{% livewire 'demoTodo' %}

Usage in CMS Components

You may implement Livewire in your CMS components using the RainLab\Livewire\Behaviors\LivewireComponent behavior. This implementation will ensure that the necessary dependencies are registered when the component is used.

class MyComponent extends \Cms\Classes\ComponentBase
{
    public $implement = [
        \RainLab\Livewire\Behaviors\LivewireComponent::class
    ];
}

Then render the component using the {% livewire %} tag.

{% livewire 'counter' %}

Alternatively, you can render the component in PHP using the renderLivewire method.

$this->renderLivewire('counter');

Usage in Backend Controllers

You may implement Livewire in your backend controllers using the RainLab\Livewire\Behaviors\LivewireController behavior. This implementation will ensure that the necessary dependencies are registered with the controller.

class MyController extends \Backend\Classes\Controller
{
    public $implement = [
        \RainLab\Livewire\Behaviors\LivewireController::class
    ];
}

Then render the component using the makeLivewire method.

<?= $this->makeLivewire('counter') ?>

Usage Example

Here we will create a component in the app directory and render it on a CMS page freestanding. First, create a file called app/views/livewire/counter.htm with the following content.

<div class="input-group py-3 w-25">
    <button wire:click="add" class="btn btn-outline-secondary">
        Add
    </button>
    <div class="form-control">
        {{ count }}
    </div>
    <button wire:click="subtract" class="btn btn-outline-secondary">
        Subtract
    </button>
</div>

Create a file called app/Livewire/Counter.php with the following contents.

<?php namespace App\Livewire;

use RainLab\Livewire\Classes\LivewireBase;

class Counter extends LivewireBase
{
    public $count = 1;

    public function add()
    {
        $this->count++;
    }

    public function subtract()
    {
        $this->count--;
    }
}

This component now be rendered as counter in your CMS templates. The component name is derived from the class name.

{% livewire 'counter' %}

For example, in the demo theme, create a template called test.htm with the following content. Then open the /test URL.

url = "/test"
layout = "default"

[livewire]
==
<div class="container">
    {% livewire 'counter' %}
</div>

See Also

License

This plugin is an official extension of the October CMS platform and is free to use if you have a platform license. See EULA license for more details.

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