pp_cms/webApp/common/widgets/JsBlock.php

<?php
/**
 * Author: lf
 * Blog: https://blog.feehi.com
 * Email: job@feehi.com
 * Created at: 2016-07-08 14:23
 */
namespace common\widgets;

use yii\web\View;
use yii\widgets\Block;
use yii\base\InvalidParamException;


class JsBlock extends Block
{

    /**
     * @var null
     */
    public $key = null;
    /**
     * @var int
     */
    public $pos = View::POS_END;

    /**
     * Ends recording a block.
     * This method stops output buffering and saves the rendering result as a named block in the view.
     */
    public function run()
    {
        $block = ob_get_clean();
        if ($this->renderInPlace) {
            throw new InvalidParamException("Not implemented yet ! ");
        }
        $block = trim($block);
        /*
        $jsBlockPattern  = '|^<script[^>]*>(.+?)</script>$|is';
        if(preg_match($jsBlockPattern,$block)){
            $block =  preg_replace ( $jsBlockPattern , '${1}'  , $block );
        }
        */
        $jsBlockPattern = '|^<script[^>]*>(?P<block_content>.+?)</script>$|is';
        if (preg_match($jsBlockPattern, $block, $matches)) {
            $block = $matches['block_content'];
        }

        $this->view->registerJs($block, $this->pos, $this->key);
    }
}