Phalcon Widget

bootstrap.php

<?php
/* /app/bootstrap.php */

// Регистрация namespace Widgets для хранения виджетов
$loader = new \Phalcon\Loader();
$loader->registerNamespaces(
    [
        // ...
        'Widgets' => '/../app/widgets'
        // ...
    ]
);
$loader->register();

// Регистрация сервиса volt с дополнительной функцией "widget"
$voltService = function($view, $di) use($config) {
    $volt = new \Phalcon\Mvc\View\Engine\Volt($view, $di);
    $volt->setOptions(array(
        'compiledPath' => $config->application->cacheDir,
        'compiledSeparator' => '_',
        'compiledExtension' => '.php'
    ));

    /** @var \Phalcon\Mvc\View\Engine\Volt\Compiler $compiler */
    $compiler = $volt->getCompiler();
    $compiler->addFunction('widget', function($resolvedArgs, $exprArgs) use($compiler) {
        $class = trim($compiler->expression($exprArgs[0]['expr']), "'");
        $params = empty($exprArgs[1]['expr']) ? null : $compiler->expression($exprArgs[1]['expr']);
        return "\\Widgets\\$class::widget($params)";
    });

    return $volt;
};

// Регистрация стандратного сервиса View
$di->set('view', [
    'className' => '\Phalcon\Mvc\View',
    'calls' => [
        ['method' => 'setViewsDir', 'arguments' => [
            ['type' => 'parameter', 'value' => '../app/views'],
        ]],
        ['method' => 'registerEngines', 'arguments' => [
            ['type' => 'parameter', 'value' => [
                '.phtml' => 'Phalcon\Mvc\View\Engine\Php',
                '.volt'  => $voltService,
            ]],
        ]],
    ],
], true);


// Регистрация сервиса widgetView
$di->set('widgetView', [
    'className' => '\Phalcon\Mvc\View',
    'calls' => [
        ['method' => 'setViewsDir', 'arguments' => [
            ['type' => 'parameter', 'value' =>  '../app/widgets'],
        ]],
        ['method' => 'registerEngines', 'arguments' => [
            ['type' => 'parameter', 'value' => [
                '.phtml' => 'Phalcon\Mvc\View\Engine\Php',
                '.volt'  => $voltService,
            ]],
        ]],
    ],
]);

index.volt

{# /app/views/index/index.volt #}

<div>
{{ widget('Slider', ['slides': [
    ['link': '', 'img': '', 'alt': '', 'text': ''],
    ['link': '', 'img': '', 'alt': '', 'text': '']
]]) }}
</div>

Slider.php

<?php

/* /app/widgets/Slider.php */

namespace Widgets;

use Widget;

// Наш новый виджет слайдера
class Slider extends Widget
{

    /** @var array */
    public $slides = [];

    public function run()
    {
        return $this->render(
            'sliderView',
            [
                'slides' => $this->slides,
            ]
        );
    }
}

sliderView.volt

{# /app/widgets/views/sliderView.volt #}

<ul id="slider">
    {% for slide in slides %}
        <li>
            <div class="slide">
                <a href="{{ slide['link'] }}">
                    {{ image(slide['img'], 'alt': slide['alt']) }}
                </a>
            </div>
        </li>
    {% endfor %}
</ul>

Widget.php

<?php

/* /app/library/Widget.php */


// Базовый класс для виджета

use Phalcon\Mvc\View;

class Widget extends Phalcon\DI\Injectable
{

    /** @var View */
    private $_view;


    public function __construct()
    {
    }

    public function initialize()
    {
    }

    public static function widget(array $params = [])
    {
        $class = get_called_class();

        /* @var $widget Widget */
        $widget = new $class();
        foreach ($params as $key => $value) {
            if (!property_exists($class, $key)) {
                trigger_error(__METHOD__ . " property $class::$key is not defined.");
                continue;
            }

            $widget->$key = $value;
        }

        $widget->initialize();

        return $widget->run();
    }

    /**
     * @return View
     */
    public function getView()
    {
        if ($this->_view === null) {
            $this->_view = $this->di->get('widgetView');
            $this->_view->setDi($this->di);

        }

        return $this->_view;
    }

    /**
     * @param View $view
     * @return Widget
     */
    public function setView(View $view)
    {
        $this->_view = $view;
        return $this;
    }


    /**
     * @param string $view_name
     * @param array  $params
     * @return string
     */
    public function render($view_name, array $params = [])
    {
        return $this->getView()->getRender('views', $view_name, $params);
    }

    /**
     * @return string
     */
    public function run()
    {
    }
}