getTable('kimai2_users'); $table->addColumn('supervisor_id', 'integer', ['length' => 11, 'notnull' => false, 'default' => null]); $table->addForeignKeyConstraint('kimai2_users', ['supervisor_id'], ['id'], ['onDelete' => 'SET NULL'], 'FK_B9AC5BCE19E9AC5F'); $table->addIndex(['supervisor_id'], 'IDX_B9AC5BCE19E9AC5F'); } public function down(Schema $schema): void { $table = $schema->getTable('kimai2_users'); $table->removeForeignKey('FK_B9AC5BCE19E9AC5F'); $table->dropIndex('IDX_B9AC5BCE19E9AC5F'); $table->dropColumn('supervisor_id'); } }