_storeManager = $storemanager; parent::__construct($context, $data); $this->_authorization = $context->getAuthorization(); } /** * Renders grid column * * @param Object $row * @return string */ public function render(DataObject $row) { $mediaDirectory = $this->_storeManager->getStore()->getBaseUrl( \Magento\Framework\UrlInterface::URL_TYPE_MEDIA ); $imageUrl = $mediaDirectory.'/yereone/testimonials'.$this->_getValue($row); return ''; } }