/** * Return block instance with specific attribute fields * * @param Enterprise_ImportExport_Model_Scheduled_Operation $operation * @return Enterprise_ImportExport_Block_Adminhtml_Export_Filter */ protected function _getFilterBlock($operation) { $export = $operation->getInstance(); $block = $this->getLayout()->createBlock('enterprise_importexport/adminhtml_export_filter')->setOperation($export); $export->filterAttributeCollection($block->prepareCollection($export->getEntityAttributeCollection())); return $block; }