PHP Magento\Backend\Block\System\Config\Form Field::_toHtml Examples

Example #1

File: AbstractFieldArray.php Project: aiesh/magento2

 /**
  * Render block HTML
  *
  * @return string
  * @throws \Exception
  */
 protected function _toHtml()
 {
     if (!$this->_isPreparedToRender) {
         $this->_prepareToRender();
         $this->_isPreparedToRender = true;
     }
     if (empty($this->_columns)) {
         throw new \Exception('At least one column must be defined.');
     }
     return parent::_toHtml();
 }