ScopedViewParams.php

<?php


namespace SamIT\Yii2\Behaviors;


use yii\base\Behavior;
use yii\base\InvalidConfigException;
use yii\base\View;
use yii\base\ViewEvent;
use yii\base\ViewRenderer;

class ScopedViewRenderer extends ViewRenderer
{
    public $params;
    public $renderer;

    public function render($view, $file, $params)
    {
        $params = array_merge($this->params, $params);

        if (!isset($this->renderer)) {
            return $view->renderPhpFile($file, $params);
        }

        if (!$this->renderer instanceof ViewRenderer) {
            $this->renderer = \Yii::createObject($this->renderer);
        }

        return $this->render($view, $file, $params);
    }
}
/**
 * Class ScopedViewParams
 * @property View $owner
 * @package SamIT\Yii2\Behaviors
 */
class ScopedViewParams extends Behavior
{
    /**
     * @var array Map of view file name to array of params.
     */
    private $scopedParams = [];


    /**
     * @param $viewFile Must be the fully resolved view file name.
     * @param $params
     */
    public function setScopedParams($viewFile, $params)
    {

        $this->scopedParams[$viewFile] = $params;
    }

    public function attach($owner)
    {
        if (!$owner instanceof View) {
            throw new InvalidConfigException('This behavior must be attached to an instance of \yii\base\View');
        }
        parent::attach($owner);
    }

    public function events()
    {
        return [
            View::EVENT_BEFORE_RENDER => 'beforeRender'
        ];
    }

    /**
     * Replace renderer for the view file.
     * @param ViewEvent $event
     */
    public function beforeRender(ViewEvent $event)
    {
        if (!isset($this->scopedParams[$event->viewFile])) {
            return;
        }
        
        // Replace
        $ext = pathinfo($event->viewFile, PATHINFO_EXTENSION);
        if (!isset($this->owner->renderers[$ext])) {
            // Simple case, the file is a PHP file which is rendered directly by the view.
            $this->owner->renderers[$ext] = new ScopedViewRenderer([
                'params' => $this->scopedParams[$event->viewFile],
            ]);
        }

        // In case there is a configuration we replace it.
        if (is_string($this->owner->renderers[$ext]) || is_array($this->owner->renderers[$ext])) {
            $this->owner->renderers[$ext] = new ScopedViewRenderer([
                'params' => $this->scopedParams[$event->viewFile],
                'renderer' => $this->owner->renderers[$ext]
            ]);
        }

        // In case there is already a class.
        if (!$this->owner->renderers[$ext] instanceof ScopedViewRenderer) {
            $this->owner->renderers[$ext] = new ScopedViewRenderer([
                'params' => $this->scopedParams[$event->viewFile],
                'renderer' => $this->owner->renderers[$ext]
            ]);
        }
    }
}