Paul Rastoin
b2a4bb0e0c
## What
Adds a docs page teaching app developers how to reference auto-created
**system fields** (`createdAt`, `updatedAt`, `id`, …) from views and
other entities, and makes the API it documents real by exporting
`generateDefaultFieldUniversalIdentifier` from the SDK.
## Why
System fields are provisioned by the server, so they're never declared
with `defineField()` and have no importable `universalIdentifier`
constant. Since 2.19 their universal identifier is derived
deterministically from the application id, the object id and the field
name. Hardcoding an invented id fails sync with `INVALID_VIEW_DATA:
Field metadata not found` (this is exactly what broke the
twenty-partners `createdAt` view column).
The twenty-partners app already imports
`generateDefaultFieldUniversalIdentifier` from `twenty-sdk/define`, but
the function was never exported from the SDK. This PR adds the export
and documents the pattern.
## Changes
- **New page** `data/system-fields.mdx` — "Targeting System Fields":
- Lists the 8 system fields (`id`, `createdAt`, `updatedAt`,
`deletedAt`, `createdBy`, `updatedBy`, `position`, `searchVector`).
- Explains the deterministic derivation and the sync error from
hardcoding ids.
- Documents `generateDefaultFieldUniversalIdentifier({
applicationUniversalIdentifier, objectUniversalIdentifier, fieldName })`
with a full `defineView` example.
- Contrasts with standard objects (use
`STANDARD_OBJECT_UNIVERSAL_IDENTIFIERS.<object>.fields.<field>.universalIdentifier`)
and notes that `name` is a default, not system, field.
- **SDK export** — new `generate-default-field-universal-identifier.ts`
wrapping the existing `getFieldUniversalIdentifier` from
`twenty-shared/application` (`name` → `fieldName`), exported from
`define/index.ts`.
- Registered the page in `docs.json` (Data group) and cross-linked it
from the Views doc.
## Notes
`node_modules` isn't installed in this environment, so `nx typecheck`
wasn't run. The wrapper is a signature-matched pass-through and the
`twenty-shared/application` subpath + `getFieldUniversalIdentifier`
barrel export were both verified to exist.
---
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---------
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Twenty Documentation
Official documentation for Twenty CRM, powered by Mintlify.
🌐 Live Site
Visit the documentation at docs.twenty.com
📚 Content
This repository contains:
- User Guide (46 pages) - Complete guide for Twenty users
- Developers (24 pages) - Technical documentation for developers
- Twenty UI (25 pages) - UI component library documentation
🚀 Local Development
To run the documentation locally:
# From the twenty monorepo root
npx nx run twenty-docs:dev
The documentation will be available at http://localhost:3000
📝 Editing Content
Adding/Editing Pages
-
Edit MDX files in the appropriate directory:
user-guide/- User documentationdevelopers/- Developer documentationtwenty-ui/- Component documentation
-
Update
navigation/base-structure.jsonif you need to change the tab/group hierarchy or add/remove pages. This file stays in the repo and is not uploaded to Crowdin. -
Keep the translation template (
navigation/navigation.template.json) in sync by runningyarn docs:generate-navigation-templateafter editing the base structure. This template is the only file that should be pushed to Crowdin. -
For each translated locale pulled from Crowdin, ensure a
packages/twenty-docs/l/<language>/navigation.jsonfile exists. These files contain labels only; page slugs always come from the base structure. -
Run
yarn docs:generateto rebuilddocs.jsonfrom the base structure + translated labels.
MDX Format
All documentation pages use MDX format with frontmatter:
---
title: Page Title
description: Page description
image: /images/path/to/image.png
---
Your content here...
Adding Images
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 - Or use Mintlify Frame component:
<Frame>
<img src="/images/your-image.png" alt="Description" />
</Frame>
🔧 Configuration
navigation/base-structure.json- Source of truth for tabs, groups, icons, and page slugs (English only, not sent to Crowdin).navigation/navigation.template.json- Generated translation template (labels only) that is uploaded to Crowdin.l/<language>/navigation.json- Locale-specific label files pulled from Crowdin.docs.json- Generated Mintlify configuration (always runyarn docs:generateafter modifying navigation files).package.json- Package dependencies and scripts (docs:generate,docs:generate-navigation-template, …).project.json- Nx workspace configuration
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🔗 Links
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packages/twenty-docsdirectory - Test locally with
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