isSystem field and object (#17992)
# Introduction ## Centralize system field definitions - Extract a single `PARTIAL_SYSTEM_FLAT_FIELD_METADATAS` constant as the source of truth for all 8 system fields (`id`, `createdAt`, `updatedAt`, `deletedAt`, `createdBy`, `updatedBy`, `position`, `searchVector`), eliminating duplication across custom object and standard app field builders - Refactor `buildDefaultFlatFieldMetadatasForCustomObject` to use the shared constant via a new `buildObjectSystemFlatFieldMetadatas` helper ## Mark system fields as `isSystem: true` - Fields `id`, `createdAt`, `updatedAt`, `deletedAt`, `createdBy`, `updatedBy`, `position`, `searchVector` are now properly flagged as system fields across all standard objects and custom object creation - Standard app field builders for all ~30 standard objects updated to set `isSystem: true` on `createdAt`, `updatedAt`, `deletedAt`, `createdBy`, `updatedBy` - System-only standard objects (blocklist, calendar channels, message threads, etc.) now also include `createdBy`, `updatedBy`, `position`, `searchVector` field definitions that were previously missing ## Validate system fields on object creation - New transversal validation (`crossEntityTransversalValidation`) runs after all atomic entity validations in the build orchestrator, ensuring all 8 system fields are present with correct `type` and `isSystem: true` when an object is created - New `buildUniversalFlatObjectFieldByNameAndJoinColumnMaps` utility to resolve field names to universal identifiers for a given object - New exception codes: `MISSING_SYSTEM_FIELD` and `INVALID_SYSTEM_FIELD` on `ObjectMetadataExceptionCode` ## Protect system fields and objects from mutation - Field validators now block update/delete of `isSystem` fields by non-system callers (`FIELD_MUTATION_NOT_ALLOWED`) - Object validators now block update/delete of `isSystem` objects by non-system callers - `POSITION` and `TS_VECTOR` field type validators replaced: instead of rejecting creation outright, they now validate that the field is named correctly (`position` / `searchVector`) and has `isSystem: true` ## Distinguish `isSystemBuild` from `isCallerTwentyStandardApp` - New `isCallerTwentyStandardApp` utility checks whether the caller's `applicationUniversalIdentifier` matches the twenty standard app - Name-sync logic (`isFlatFieldMetadataNameSyncedWithLabel`, `areFlatObjectMetadataNamesSyncedWithLabels`) refactored to use `isCallerTwentyStandardApp` for custom suffix decisions, keeping `isSystemBuild` for mutation permission checks - `WorkspaceMigrationBuilderOptions` type updated to include `applicationUniversalIdentifier` ## Adapt frontend filtering - New `HIDDEN_SYSTEM_FIELD_NAMES` constant (`id`, `position`, `searchVector`) and `isHiddenSystemField` utility to only hide truly internal fields while keeping user-facing system fields (`createdAt`, `updatedAt`, `deletedAt`, `createdBy`, `updatedBy`) visible in the UI - ~20 frontend files updated to replace `!field.isSystem` checks with `!isHiddenSystemField(field)` across record index, settings, data model, charts, workflows, spreadsheet import, aggregations, and role permissions ## Add 1.19 upgrade commands - **`backfill-system-fields-is-system`**: Raw SQL command to set `isSystem = true` on existing workspace fields matching system field names, and fix `position` field type from `NUMBER` to `POSITION` for `favorite`/`favoriteFolder` objects. Includes proper cache invalidation. - **`add-missing-system-fields-to-standard-objects`**: Codegen'd workspace migration to create missing `position`, `searchVector`, `createdBy`, `updatedBy` fields on standard objects that didn't previously have them. Runs via `WorkspaceMigrationRunnerService` in a single transaction with idempotency check. **Known limitation**: assumes all standard objects exist and are valid in the target workspace. ## Add `universalIdentifier` for system fields in standard object constants - `standard-object.constant.ts` updated to include `universalIdentifier` for `createdBy`, `updatedBy`, `position`, and `searchVector` across all standard objects - `fieldManifestType.ts` updated to support the new field manifest shape ## System relation Completely removed and backfilled all `isSystem` relation to be false false As we won't require an object to have any relation system fields ## Add integration tests - New test suite `failing-sync-application-object-system-fields` covering: missing system fields, wrong field types (`id` as TEXT, `createdAt` as TEXT, `position` as TEXT), system field deletion attempts, and system field update attempts - New test utilities: `buildDefaultObjectManifest` (builds an object manifest with all 8 system fields) and `setupApplicationForSync` (centralizes application setup) - Existing successful sync test updated to verify system fields are created with correct properties ## Next step Make the builder scope the compared entity to be the currently built app + nor twenty standard app
The #1 Open-Source CRM
🌐 Website · 📚 Documentation · Roadmap ·
Discord ·
Figma
Installation
See: 🚀 Self-hosting 🖥️ Local Setup
Does the world need another CRM?
We built Twenty for three reasons:
CRMs are too expensive, and users are trapped. Companies use locked-in customer data to hike prices. It shouldn't be that way.
A fresh start is required to build a better experience. We can learn from past mistakes and craft a cohesive experience inspired by new UX patterns from tools like Notion, Airtable or Linear.
We believe in Open-source and community. Hundreds of developers are already building Twenty together. Once we have plugin capabilities, a whole ecosystem will grow around it.
What You Can Do With Twenty
Please feel free to flag any specific needs you have by creating an issue.
Below are a few features we have implemented to date:
- Personalize layouts with filters, sort, group by, kanban and table views
- Customize your objects and fields
- Create and manage permissions with custom roles
- Automate workflow with triggers and actions
- Emails, calendar events, files, and more
Personalize layouts with filters, sort, group by, kanban and table views
Customize your objects and fields
Create and manage permissions with custom roles
Automate workflow with triggers and actions
Emails, calendar events, files, and more
Stack
- TypeScript
- Nx
- NestJS, with BullMQ, PostgreSQL, Redis
- React, with Recoil, Emotion and Lingui
Thanks
Thanks to these amazing services that we use and recommend for UI testing (Chromatic), code review (Greptile), catching bugs (Sentry) and translating (Crowdin).
Join the Community
- Star the repo
- Subscribe to releases (watch -> custom -> releases)
- Follow us on Twitter or LinkedIn
- Join our Discord
- Improve translations on Crowdin
- Contributions are, of course, most welcome!




