addSql('ALTER TABLE financial_breakdowns DROP FOREIGN KEY `FK_D66D9FF44C3A3BB`'); $this->addSql('ALTER TABLE financial_breakdowns ADD CONSTRAINT FK_D66D9FF44C3A3BB FOREIGN KEY (payment_id) REFERENCES payments (id) ON DELETE RESTRICT'); } public function down(Schema $schema): void { // this down() migration is auto-generated, please modify it to your needs $this->addSql('ALTER TABLE financial_breakdowns DROP FOREIGN KEY FK_D66D9FF44C3A3BB'); $this->addSql('ALTER TABLE financial_breakdowns ADD CONSTRAINT `FK_D66D9FF44C3A3BB` FOREIGN KEY (payment_id) REFERENCES payments (id) ON DELETE CASCADE'); } }