PdfJsAsset.php

<?php

namespace yii2assets\pdfjs;

use yii\web\AssetBundle;
use yii\web\View;

/**
 * PdfJs Asset bundle
 * @author Sathit Seethaphon <dixonsatit@gmail.com>
 */
class PdfJsAsset extends AssetBundle
{
    public $sourcePath = '@yii2assets/pdfjs/assets';

    public $js = [
        'web/compatibility.js',
//        'web/l10n.js',
        'build/pdf.js',
        'build/pdf.worker.js',
        'web/debugger.js',
        'web/viewer.js'
    ];

    public $jsOptions  = [
      'position'=> View::POS_HEAD
    ];

    public $css = [
        'web/viewer.css'
    ];

    public function init()
    {
        parent::init(); // TODO: Change the autogenerated stub

        for ($i = 0; $i < count($this->css); $i++) {
            $this->css[$i] .= '?' . uniqid();
        }

        for ($i = 0; $i < count($this->js); $i++) {
            $this->js[$i] .= '?' . uniqid();
        }
    }
}
 ?>