Improved create-twenty-app documentation for AI coding agents (#20325)

Added a bit of enhanced context for better agentic coding, based on this [Discord conversation](https://discord.com/channels/1130383047699738754/1130383048173682821/1501538550301331477). --------- Co-authored-by: Félix Malfait <felix@twenty.com> Co-authored-by: Félix Malfait <felix.malfait@gmail.com>
2026-05-07 14:31:27 +02:00
parent 1179357bc7
commit 2eae25dc34
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+---
+title: Objects
+description: Declare new record types — custom tables with their own fields — using defineObject.
+icon: "table"
+---
+
+Custom **objects** are new record types your app adds to a workspace — Post Card, Invoice, Subscription, anything specific to your domain. Each object declares its schema (fields, relations, default values) and a stable universal identifier that survives across syncs and deploys.
+
+```ts src/objects/post-card.object.ts
+import { defineObject, FieldType } from 'twenty-sdk/define';
+
+enum PostCardStatus {
+  DRAFT = 'DRAFT',
+  SENT = 'SENT',
+  DELIVERED = 'DELIVERED',
+  RETURNED = 'RETURNED',
+}
+
+export default defineObject({
+  universalIdentifier: '54b589ca-eeed-4950-a176-358418b85c05',
+  nameSingular: 'postCard',
+  namePlural: 'postCards',
+  labelSingular: 'Post Card',
+  labelPlural: 'Post Cards',
+  description: 'A post card object',
+  icon: 'IconMail',
+  fields: [
+    {
+      universalIdentifier: '58a0a314-d7ea-4865-9850-7fb84e72f30b',
+      name: 'content',
+      type: FieldType.TEXT,
+      label: 'Content',
+      description: "Postcard's content",
+      icon: 'IconAbc',
+    },
+    {
+      universalIdentifier: 'c6aa31f3-da76-4ac6-889f-475e226009ac',
+      name: 'recipientName',
+      type: FieldType.FULL_NAME,
+      label: 'Recipient name',
+      icon: 'IconUser',
+    },
+    {
+      universalIdentifier: '95045777-a0ad-49ec-98f9-22f9fc0c8266',
+      name: 'recipientAddress',
+      type: FieldType.ADDRESS,
+      label: 'Recipient address',
+      icon: 'IconHome',
+    },
+    {
+      universalIdentifier: '87b675b8-dd8c-4448-b4ca-20e5a2234a1e',
+      name: 'status',
+      type: FieldType.SELECT,
+      label: 'Status',
+      icon: 'IconSend',
+      defaultValue: `'${PostCardStatus.DRAFT}'`,
+      options: [
+        { value: PostCardStatus.DRAFT, label: 'Draft', position: 0, color: 'gray' },
+        { value: PostCardStatus.SENT, label: 'Sent', position: 1, color: 'orange' },
+        { value: PostCardStatus.DELIVERED, label: 'Delivered', position: 2, color: 'green' },
+        { value: PostCardStatus.RETURNED, label: 'Returned', position: 3, color: 'orange' },
+      ],
+    },
+    {
+      universalIdentifier: 'e06abe72-5b44-4e7f-93be-afc185a3c433',
+      name: 'deliveredAt',
+      type: FieldType.DATE_TIME,
+      label: 'Delivered at',
+      icon: 'IconCheck',
+      isNullable: true,
+      defaultValue: null,
+    },
+  ],
+});
+```
+
+## Key points
+
+- The `universalIdentifier` must be unique and stable across deployments.
+- Each field requires a `name`, `type`, `label`, and its own stable `universalIdentifier`.
+- The `fields` array is optional — you can define objects without custom fields.
+- Inline fields defined here do **not** need an `objectUniversalIdentifier` — it's inherited from the parent object. Use [`defineField()`](/developers/extend/apps/data/extending-objects) to add fields to objects you don't own.
+- You can scaffold new objects with `yarn twenty add object`, which guides you through naming, fields, and relationships. See [Architecture → Scaffolding entities](/developers/extend/apps/getting-started/scaffolding).
+
+<Note>
+**Base fields are added automatically.** When you define a custom object, Twenty creates standard fields like `id`, `name`, `createdAt`, `updatedAt`, `createdBy`, `updatedBy`, and `deletedAt` for you. You don't need to declare them in your `fields` array — only your custom fields. You can override a default field by declaring one with the same name, but this is rarely a good idea.
+</Note>
+
+## What's next
+
+- **Connect this object to others** — see [Relations](/developers/extend/apps/data/relations) for the bidirectional relation pattern.
+- **Add fields to objects from other apps** — see [Extending Objects](/developers/extend/apps/data/extending-objects) for `defineField()`.
+- **Display this object in the UI** — see [Views](/developers/extend/apps/layout/views) and [Navigation Menu Items](/developers/extend/apps/layout/navigation-menu-items) to put it in the sidebar.