dosamigos\fileupload\FileUploadUI::registerClientScript PHP Метод

    public function registerClientScript()
    {
        $view = $this->getView();
        if ($this->gallery) {
            GalleryAsset::register($view);
        }
        FileUploadUIAsset::register($view);
        $options = Json::encode($this->clientOptions);
        $id = $this->options['id'];
        $js[] = ";jQuery('#{$id}').fileupload({$options});";
        if (!empty($this->clientEvents)) {
            foreach ($this->clientEvents as $event => $handler) {
                $js[] = "jQuery('#{$id}').on('{$event}', {$handler});";
            }
        }
        $view->registerJs(implode("\n", $js));
        if ($this->load) {
            $view->registerJs("\n                \$('#{$id}').addClass('fileupload-processing');\n                \$.ajax({\n                    url: \$('#{$id}').fileupload('option', 'url'),\n                    dataType: 'json',\n                    context: \$('#{$id}')[0]\n                }).always(function () {\n                    \$(this).removeClass('fileupload-processing');\n                }).done(function (result) {\n                    \$(this).fileupload('option', 'done').call(this, \$.Event('done'), {result: result});\n                });\n            ");
        }
    }