# Migrate Attachment Author to CreatedBy Field **Twill Task**: https://twill.ai/twentyhq/ENG/tasks/7 ## Summary This PR implements a migration to transition the `Attachment` object from using an `author` relation field to using the standard `createdBy` field, addressing issue https://github.com/twentyhq/core-team-issues/issues/1594. ## Changes - **Added migration command** (`1-8-migrate-attachment-author-to-created-by.command.ts`): - Migrates existing attachment data to use `createdBy` instead of `author` - Ensures data integrity during the transition to the standard field pattern - **Updated Attachment workspace entity**: - Added `createdBy` relation field to the `Attachment` standard object - Registered new field ID in `standard-field-ids.ts` constants - **Integrated migration into upgrade pipeline**: - Added migration module for version 1.8 - Registered in the main upgrade version command module This change aligns the `Attachment` object with Twenty's standard field conventions by using the built-in `createdBy` field instead of a custom `author` field. --- Fixes https://github.com/twentyhq/core-team-issues/issues/1594 --------- Co-authored-by: Twill <agent@twill.ai> Co-authored-by: Claude <noreply@anthropic.com> Co-authored-by: Félix Malfait <felix.malfait@gmail.com> Co-authored-by: Félix Malfait <felix@twenty.com>