addSql('ALTER TABLE network_settings DROP FOREIGN KEY FK_48869B5450C9D4F7'); $this->addSql('ALTER TABLE network_settings ADD CONSTRAINT FK_48869B5450C9D4F7 FOREIGN KEY (repository_id) REFERENCES image_repository (id) ON DELETE SET NULL'); } public function down(Schema $schema): void { // this down() migration is auto-generated, please modify it to your needs $this->addSql('ALTER TABLE network_settings DROP FOREIGN KEY FK_48869B5450C9D4F7'); $this->addSql('ALTER TABLE network_settings ADD CONSTRAINT FK_48869B5450C9D4F7 FOREIGN KEY (repository_id) REFERENCES image_repository (id)'); } }