Weiko
9c66975520
## Context
`isCustom` was a legacy denormalized boolean on `ObjectMetadataEntity`
and `FieldMetadataEntity`.
Now that every metadata row carries `applicationId` (via
`SyncableEntity`), "is this custom" is fully derivable, and the stored
boolean was a redundant second source of truth that could drift.
The real meaning of `isCustom` is **"the owning application is not the
twenty-standard application"** — i.e. `!belongsToTwentyStandardApp`.
Note this is *not* "belongs to the workspace custom app" as I initially
thought: third-party-application
objects/fields are custom too.
The standard application has a globally stable `universalIdentifier`, so
the value derives with no per-workspace lookup.
## Changed
## `isCustom` checks — before → after
`isCustom` is no longer a stored column. The table below lists every
site that branched on it and how it resolves now. The unifying rule:
`isCustom ≡
!isTwentyStandardApplicationUniversalIdentifier(applicationUniversalIdentifier)`.
### Server — behavioural checks
| Location | Purpose | Before | Now |
|---|---|---|---|
| `utils/compute-object-target-table.util.ts` | Physical table name `_`
prefix | `computeTableName(nameSingular, objectMetadata.isCustom)` |
derives from `applicationUniversalIdentifier` (single source for all
table-name callers) |
| `twenty-orm/factories/entity-schema.factory.ts` +
`…/entity-schema-metadata.type.ts` | ORM table name (hot path) |
`object.isCustom` | `object.applicationId !== standardApplicationId`
(computed in `buildEntitySchemaMetadataMaps`) |
|
`twenty-orm/repository/workspace-{delete,soft-delete,update}-query-builder.ts`
| Table name for mutations | `computeTableName(nameSingular,
objectMetadata.isCustom)` | `computeObjectTargetTable(objectMetadata)` |
| `index-metadata/utils/generate-deterministic-index-name-v2.ts` | Index
name hash (must stay bit-identical) | `flatObjectMetadata.isCustom` |
derives from `applicationUniversalIdentifier` |
| `object-metadata/object-record-count.service.ts` | Table name for
record count | `computeTableName(nameSingular, isCustom)` |
`computeObjectTargetTable(flatObjectMetadata)` |
|
`workspace-manager/dev-seeder/data/services/dev-seeder-data.service.ts`
| Match seed config by table name | `computeTableName(item.nameSingular,
item.isCustom)` | `computeObjectTargetTable(item)` |
| `commands/workspace-export/workspace-export.service.ts` +
`…/utils/generate-workspace-schema-ddl.util.ts` | Export table name (raw
entity) | `objectMetadata.isCustom` |
`!isTwentyStandard…(objectMetadata.application?.universalIdentifier)` |
|
`flat-field-metadata/services/flat-field-metadata-type-validator.service.ts`
| Block users creating reserved field types |
`args.flatEntityToValidate.isCustom` |
`!args.flatEntityToValidate.isSystem` |
| `api/common/.../common-create-many-query-runner.service.ts` | Don't
let client overwrite system `createdBy` |
`createdByFieldMetadata.isCustom === false` |
`createdByFieldMetadata.isSystem === true` |
|
`field-metadata/utils/resolve-field-metadata-standard-override.util.ts`
| Skip i18n/overrides for custom fields | `if (fieldMetadata.isCustom)
return raw` | **removed** — falls through on
`isDefined(standardOverrides)` |
|
`object-metadata/utils/resolve-object-metadata-standard-override.util.ts`
| Skip i18n/overrides for custom objects | `if (objectMetadata.isCustom)
return raw` | **removed** — same fall-through |
|
`command-menu-item/utils/build-navigation-interpolation-context.util.ts`
| Override context for nav labels | passed `isCustom` into resolver |
dropped (resolver no longer needs it) |
| `api/common/.../data-arg-processor.service.ts` | `isCustom` for
record-position table name | `flatObjectMetadata.isCustom` | derives
from `applicationUniversalIdentifier` |
| `metadata-modules/minimal-metadata/minimal-metadata.service.ts` |
Minimal DTO + override context | `flatObjectMetadata.isCustom` | derives
from `applicationUniversalIdentifier` |
|
`commands/upgrade-version-command/1-23/…backfill-record-page-layouts.command.ts`
| Filter to custom objects | `objectMetadata.isCustom` |
`!isTwentyStandard…(applicationUniversalIdentifier)` |
### Server — DTO / API population
| Location | Before | Now |
|---|---|---|
|
`flat-object-metadata/utils/from-flat-object-metadata-to-object-metadata-dto.util.ts`
| passthrough `isCustom` | derives from `applicationUniversalIdentifier`
|
|
`flat-field-metadata/utils/from-flat-field-metadata-to-field-metadata-dto.util.ts`
| passthrough `isCustom` | derives from `applicationUniversalIdentifier`
|
|
`object-metadata/utils/from-object-metadata-entity-to-object-metadata-dto.util.ts`
(REST) | `entity.isCustom` | `entity.applicationId !==
standardApplicationId` |
|
`field-metadata/utils/from-field-metadata-entity-to-field-metadata-dto.util.ts`
(REST) | `entity.isCustom` | `entity.applicationId !==
standardApplicationId` |
| `dataloaders/dataloader.service.ts` | passed
`flatFieldMetadata.isCustom` into override resolver | dropped (resolver
no longer needs it) |
> REST controllers (`object-metadata.controller.ts`,
`field-metadata.controller.ts`) resolve `standardApplicationId` once per
request from the cached `flatApplicationMaps`.
### Frontend
| Location | Purpose | Before | Now |
|---|---|---|---|
| `settings/.../SettingsObjectFieldDisabledActionDropdown.tsx` | Whether
an inactive field is deletable | `isDeletable = isCustomField` |
`isDeletable = isCustomField && !isSystemField` |
### Unchanged (out of scope)
`isCustom` on `IndexMetadata` / `View` / `Skill` / `Agent` and their
guards still read the persisted column.
Breaking change is on the isCustom filter on field and object APIs, this
is never used in the FE and unlikely used by external consumers
Postcard App — Twenty App Example
A rich example app showcasing all Twenty app entity types. Use this as a reference when building your own apps.
What's included
This app demonstrates every entity type available in the Twenty SDK:
| Entity | Files | What it shows |
|---|---|---|
| Application | src/application.config.ts |
App metadata, application variables, server variables |
| Objects | src/objects/ |
Custom objects with inline fields, junction tables |
| Fields | src/fields/ |
Standalone fields, relations (ONE_TO_MANY, MANY_TO_ONE), extending standard objects |
| Logic Functions | src/logic-functions/ |
HTTP routes, database event triggers, cron schedules, tool functions, install hooks |
| Front Components | src/components/ |
React components rendered inside Twenty's UI |
| Roles | src/roles/ |
Permission roles with object and field-level access control |
| Views | src/views/ |
Saved table views with column configuration |
| Navigation | src/navigation-menu-items/ |
Sidebar links targeting views |
| Skills | src/skills/ |
AI skill providing context to agents |
| Agents | src/agents/ |
AI agent with a system prompt |
| Page Layouts | src/page-layouts/ |
Custom record page with a front component widget |
Getting started
# From this directory
yarn install
yarn twenty dev