addSql('ALTER TABLE block DROP FOREIGN KEY FK_831B9722C4663E4'); $this->addSql('DROP INDEX IDX_831B9722C4663E4 ON block'); $this->addSql('ALTER TABLE block DROP page_id'); } public function down(Schema $schema): void { // this down() migration is auto-generated, please modify it to your needs $this->addSql('ALTER TABLE block ADD page_id INT DEFAULT NULL'); $this->addSql('ALTER TABLE block ADD CONSTRAINT FK_831B9722C4663E4 FOREIGN KEY (page_id) REFERENCES page (id)'); $this->addSql('CREATE INDEX IDX_831B9722C4663E4 ON block (page_id)'); } }