refactor: stop reading joinColumnName from relation field settings (#20304)

## Summary

`joinColumnName` on relation field settings is always derivable from the
field name (and the target object name for morph relations). This PR
stops reading it from settings anywhere in production code; the stored
value is no longer used.

The settings field is **not** removed from data yet — a follow-up can
drop it once we are confident nothing depends on the stored value.

## Helpers

The helpers are split by layer because frontend and backend hold morph
relations differently: the frontend has a base name plus a
`morphRelations[]` array, the backend has one row per target with the
name already morph-resolved.

| Helper | Layer | When to use |
|---|---|---|
| `computeRelationGqlFieldJoinColumnName` | Shared / frontend
(`gqlField`) | Non-morph relation on the frontend. |
| `computeMorphRelationGqlFieldName` | Shared / frontend (`gqlField`) |
Need the per-target morph gqlField name (e.g. `targetCompany`). |
| `computeMorphRelationGqlFieldJoinColumnName` | Shared / frontend
(`gqlField`) | Per-target morph join column on the frontend. Prefer over
the non-morph helper for any morph field — it forces the per-target
inputs. |
| `computeMorphOrRelationFieldJoinColumnName` | Backend
(`FlatFieldMetadata.name`) | Any backend read or write — the flat name
is already morph-resolved, so one helper covers both cases. |
| `computeMorphRelationFlatFieldName` | Backend
(`FlatFieldMetadata.name`) | **Mutation paths only** (create / update /
object rename). Reads consume the stored `field.name` and never call
this. |

## Test plan

- [x] Typecheck and lint (front, server, shared)
- [x] Existing unit tests pass
- [ ] CI green
This commit is contained in:
Charles Bochet
2026-05-07 09:53:00 +02:00
committed by GitHub
parent 4b56ad0607
commit 10876138d2
73 changed files with 592 additions and 387 deletions
@@ -2,8 +2,8 @@ import { isObject, isString } from '@sniptt/guards';
import { FieldMetadataType, RelationType } from 'twenty-shared/types';
import { isDefined } from 'twenty-shared/utils';
import { getFlatFieldsFromFlatObjectMetadata } from 'src/engine/api/graphql/workspace-schema-builder/utils/get-flat-fields-for-flat-object-metadata.util';
import { computeMorphOrRelationFieldJoinColumnName } from 'src/engine/metadata-modules/field-metadata/utils/compute-morph-or-relation-field-join-column-name.util';
import { getFlatFieldsFromFlatObjectMetadata } from 'src/engine/api/graphql/workspace-schema-builder/utils/get-flat-fields-for-flat-object-metadata.util';
import { isFlatFieldMetadataOfType } from 'src/engine/metadata-modules/flat-field-metadata/utils/is-flat-field-metadata-of-type.util';
import { type ObjectMetadataInfo } from 'src/modules/workflow/common/workspace-services/workflow-common.workspace-service';