Unique fields - add unicity toggle on data model settings (#13592)

To review after https://github.com/twentyhq/twenty/pull/13539

closes https://github.com/twentyhq/core-team-issues/issues/1224

---------

Co-authored-by: Charles Bochet <charles@twenty.com>

packages/twenty-server/src/engine/metadata-modules/index-metadata/utils/__tests__/validate-can-create-unique-index.util.spec.ts

@@ -8,7 +8,6 @@ describe('validateCanCreateUniqueIndex', () => {
     const field = {
       name: 'testField',
       type: FieldMetadataType.MORPH_RELATION,
-      isCustom: true,
     };
 
     expect(() => validateCanCreateUniqueIndex(field)).toThrow(
@@ -23,7 +22,6 @@ describe('validateCanCreateUniqueIndex', () => {
     const field = {
       name: 'testField',
       type: FieldMetadataType.RELATION,
-      isCustom: true,
     };
 
     expect(() => validateCanCreateUniqueIndex(field)).toThrow(
@@ -38,7 +36,6 @@ describe('validateCanCreateUniqueIndex', () => {
     const field = {
       name: 'testField',
       type: FieldMetadataType.FULL_NAME,
-      isCustom: true,
     };
 
     expect(() => validateCanCreateUniqueIndex(field)).toThrow(
@@ -53,7 +50,6 @@ describe('validateCanCreateUniqueIndex', () => {
     const field = {
       name: 'testField',
       type: FieldMetadataType.ADDRESS,
-      isCustom: true,
     };
 
     expect(() => validateCanCreateUniqueIndex(field)).toThrow(

packages/twenty-server/src/engine/metadata-modules/index-metadata/utils/validate-can-create-unique-index.util.ts

@@ -10,17 +10,8 @@ import {
 import { isCompositeFieldMetadataType } from 'src/engine/metadata-modules/field-metadata/utils/is-composite-field-metadata-type.util';
 
 export const validateCanCreateUniqueIndex = (
-  field: Pick<FieldMetadataEntity, 'type' | 'name' | 'isCustom'>,
+  field: Pick<FieldMetadataEntity, 'type' | 'name'>,
 ) => {
-  if (field.isCustom === false)
-    throw new FieldMetadataException(
-      `Unique index cannot be created on standard field`,
-      FieldMetadataExceptionCode.INVALID_FIELD_INPUT,
-      {
-        userFriendlyMessage: t`Standard fields cannot be unique.`,
-      },
-    );
-
   const isCompositeFieldWithNonIncludedUniqueConstraint =
     isCompositeFieldMetadataType(field.type) &&
     !compositeTypeDefinitions