# What this PR does
Overall naming `universal` versus `flat` is not always the most updated
and so on
Will make a big cleaning tour after I've finished the whole migration
Migrating all `view` and ( filter fields etc ) `field` `object` `index`
to the universal pattern on all `services`, `builder` and `runner`
levels
## Universal and flat optimistic tooling
`addUniversalFlatEntityToUniversalFlatEntityAndRelatedEntityMapsThroughMutationOrThrow`
and its delete counterpart maintain the consistency of
`UniversalFlatEntityMaps` when an entity is created or removed. Beyond
inserting/removing the entity from its own maps, they walk through
`ALL_UNIVERSAL_METADATA_RELATIONS` to update the **aggregator arrays**
on related parent entities — the add appends the new entity's
`universalIdentifier` to the parent's aggregator (e.g. a new viewField's
identifier gets appended to its parent view's
`viewFieldUniversalIdentifiers`), and the delete filters it out. This
keeps the maps in sync so that diff computations and relation lookups
remain accurate throughout the migration building process.
## ALL_UNIVERSAL_METADATA_RELATIONS
`ALL_UNIVERSAL_METADATA_RELATIONS` is the universal counterpart of
`ALL_METADATA_RELATIONS`. It maps each metadata entity to its
many-to-one and one-to-many relations using universal foreign keys
(`*UniversalIdentifier`) instead of database IDs (`*Id`). This allows
migration actions to reference related entities in a workspace-agnostic
way. Relations that are workspace-specific (e.g. `workspace`,
`dataSource`, `userWorkspace`) are set to `null` and skipped during
resolution.
## `workspaceMigrationCreateIdEnrichment`
Reserved to API metadata ( will be able to validate at app installation
lvl )
- Workspace migration `create` actions now carry an optional `id` (and
`fieldIdByUniversalIdentifier` for object/field actions) so that
caller-provided IDs flow through the entire build-validate-run pipeline.
- New `enrichCreateWorkspaceMigrationActionsWithIds` utility resolves
`universalIdentifier → id` mappings after the builder runs and injects
them into the migration actions before the runner persists entities.
- Runner action handlers use the provided IDs instead of generating new
UUIDs, enabling deterministic entity creation for synchronization
workflows.
## `resolveUniversalUpdateRelationIdentifiersToIds`
`resolveUniversalUpdateRelationIdentifiersToIds` converts universal
identifiers (workspace-agnostic, stable keys) in a migration update
payload into concrete database UUIDs, so the update can be applied to a
specific workspace.
It iterates over the many-to-one relations defined in
`ALL_UNIVERSAL_METADATA_RELATIONS` for the given entity type, replaces
each `*UniversalIdentifier` property with its corresponding `*Id` by
looking up the target entity in `allFlatEntityMaps`, and throws if a
non-null identifier can't be resolved.
Used by all `update` action handlers in
`transpileUniversalActionToFlatAction`, avoiding duplicated resolution
logic across handlers.
## What this PR does not
- Migrating twenty-standard declaration to universal
- Migrating all the inputs transpilers to universal
- Migrating all metadata to be fully universal ( we still need to
de-scope the type of all of them and refactor their validator very close
)
---------
Co-authored-by: Charles Bochet <charles@twenty.com>
# Introduction
Requiring the spreaded `__universal` record that aggregates all the
universal identifier ( relations fk and aggregators ) of an entity to
its root
It's blockin for https://github.com/twentyhq/twenty/pull/17687 to be
finalized because if we don't we would have to migrated all related
entities at once in order for them to always have the universal
properties
## `resolveEntityRelationUniversalIdentifiers`
Introduced `resolveEntityRelationUniversalIdentifiers` a centralized
utility that resolves foreign key IDs to universal identifiers using
ALL_METADATA_RELATIONS metadata. It provides strict typing for both
input (foreign keys) and output (universal identifiers), with
nullability dynamically inferred from entity relation types.
Strictly and dynamically typed for both output and input
To do so added a new type and const/runtime grain to
ALL_METADATA_RELATIONS `isNullable`to many-to-one entries, derived from
the entity relation property types. And fixed incorrectly typed typeorm
entities
### Usage
```ts
const {
availabilityObjectMetadataUniversalIdentifier,
frontComponentUniversalIdentifier,
} = resolveEntityRelationUniversalIdentifiers({
metadataName: 'commandMenuItem',
foreignKeyValues: {
availabilityObjectMetadataId:
createCommandMenuItemInput.availabilityObjectMetadataId,
frontComponentId: createCommandMenuItemInput.frontComponentId,
},
flatEntityMaps: { flatObjectMetadataMaps, flatFrontComponentMaps },
});
```
# Introduction
In this PR we're refactoring the `FlatEntity` type to become a superset
of the `UniversalFlatEntity`.
Right now we're storing all the extra properties in `__universal`
property, at some point it might just be sibling to other entity and we
might rely on the `propertiesToCompare` constants and TypeScript
allowing passing a superset type into a smaller subset type
## FromTo utils
The entity to flat entity method now computes the universal information,
standardized a typing and pattern to do
## Example
Also strictly type
```ts
"bbb019ea-6205-498c-aea5-67bc53bce8a9": {
"workspaceId": "20202020-1c25-4d02-bf25-6aeccf7ea419",
"universalIdentifier": "20202020-d111-4d11-8d11-da5ab0a11002",
"applicationId": "d01b010d-b984-465b-b40b-370e954e5188",
"id": "bbb019ea-6205-498c-aea5-67bc53bce8a9",
"pageLayoutTabId": "791a512f-169f-4209-b731-aa86716668c6",
"title": "Deals by Company",
"type": "GRAPH",
"objectMetadataId": "9e14efea-df5b-4c0e-aba9-cfe455f32397",
"gridPosition": { "row": 0, "column": 6, "rowSpan": 6, "columnSpan": 6 },
"configuration": {
"color": "orange",
"orderBy": "FIELD_ASC",
"timezone": "UTC",
"displayLegend": true,
"displayDataLabel": false,
"showCenterMetric": true,
"configurationType": "PIE_CHART",
"firstDayOfTheWeek": 0,
"aggregateOperation": "COUNT",
"groupBySubFieldName": "name",
"groupByFieldMetadataId": "6673ff18-63d2-47a1-8f85-2b9b09ca27a5",
"aggregateFieldMetadataId": "8d64ee41-5dd4-4de6-945a-7c0c18399715"
},
"createdAt": "2026-01-28T14:08:52.140Z",
"updatedAt": "2026-01-28T14:08:52.140Z",
"deletedAt": null,
"__universal": {
"universalIdentifier": "20202020-d111-4d11-8d11-da5ab0a11002",
"applicationUniversalIdentifier": "20202020-64aa-4b6f-b003-9c74b97cee20",
"pageLayoutTabUniversalIdentifier": "20202020-d011-4d11-8d11-da5ab0a01001",
"objectMetadataUniversalIdentifier": "20202020-9549-49dd-b2b2-883999db8938",
"gridPosition": {
"row": 0,
"column": 6,
"rowSpan": 6,
"columnSpan": 6
},
"configuration": {
"color": "orange",
"orderBy": "FIELD_ASC",
"timezone": "UTC",
"displayLegend": true,
"displayDataLabel": false,
"showCenterMetric": true,
"configurationType": "PIE_CHART",
"firstDayOfTheWeek": 0,
"aggregateOperation": "COUNT",
"groupBySubFieldName": "name",
"aggregateFieldMetadataUniversalIdentifier": "20202020-d01a-4131-8a31-f123456789ab",
"groupByFieldMetadataUniversalIdentifier": "20202020-cbac-457e-b565-adece5fc815f"
}
}
},
```
Paul Rastoin