# Introduction
In this pull-request we introduce a service dedicated to the
twenty-standard app installation, we will later be able to re-use
existing logic to be more generic and allow any app installation.
For the moment sticking to this usage
https://github.com/twentyhq/core-team-issues/issues/1995
## Encountered issues
- We decided not to migrate deprecated fields ( also they will become
custom field for any existing workspace having them in the future )
- duplicate criteria
- wrong search index declaration
- forgotten isSearchable
- Attachement seed
- Restored standardId
## Note
For the moment we're still searching through standardId for code that
run on both existing and new workspaces.
For code running on new workspace exclusively we're searching using
universalIdentifier
We will standardize universalIdentifier usage later when we've migratred
all the existing workspaces
## Workspace creation
Will handle workspace creation the same way in another PR
Related https://github.com/twentyhq/twenty/pull/15065
## TODO
- [ ] Double all frontend hardcoded queries to not refer to deprecated
fields especially attachments
# 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>
In this PR
- closing https://github.com/twentyhq/core-team-issues/issues/313
- adding permission gates on workspace settings and security settings
- adding integration tests for each of the protected setting and
security
Paul Rastoin
