*/ namespace Magento\Tax\Model\ResourceModel\Calculation; class Rate extends \Magento\Framework\Model\ResourceModel\Db\AbstractDb { /** * Resource initialization * * @return void */ protected function _construct() { $this->_init('tax_calculation_rate', 'tax_calculation_rate_id'); } /** * Initialize unique fields * * @return $this */ protected function _initUniqueFields() { $this->_uniqueFields = [['field' => ['code'], 'title' => __('Code')]]; return $this; } /** * Delete all rates * * @return $this */ public function deleteAllRates() { $this->getConnection()->delete($this->getMainTable()); return $this; } /** * Check if this rate exists in rule * * @param int $rateId * @return array */ public function isInRule($rateId) { $connection = $this->getConnection(); $select = $connection->select()->from( $this->getTable('tax_calculation'), ['tax_calculation_rate_id'] )->where( 'tax_calculation_rate_id = ?', $rateId ); return $connection->fetchCol($select); } }