Weiko
1a475d0edd
## What & why Syncing a Twenty app's metadata is destructive (removing a field/object drops the backing column/table), but the only preview was `dev --once --dry-run`, which collapsed every change into one line per entity — no before/after, no color, no destructive warning, and no confirmation before a real sync. This introduces a `terraform plan`-style flow. The server's `syncApplication(manifest, dryRun)` already returns a complete `SyncAction[]` (create/update/delete with per-attribute `before`/`after`), so this is a CLI-only change — **no server changes**. ## Command surface `plan` previews, `apply` applies; `dev` is the watch wrapper over the same engine. | Command | Behavior | | --- | --- | | `twenty plan [appPath]` | Render the full plan, read-only | | `twenty apply [appPath]` | Plan → confirm on destructive → apply | | `twenty dev --once` | **Deprecated** alias of `twenty apply` (still works, warns) | | `twenty dev --once --dry-run` | **Deprecated** alias of `twenty plan` (still works, warns) | | `twenty dev` (watch) | Compact summary; inline `[y/N]` confirm on destructive saves | | `-f, --force` | Skip the destructive gate (on `apply` and `dev`) | ## Plan output ``` Twenty will perform the following actions: # objectMetadata "rocket" will be created + nameSingular = "rocket" + labelSingular = "Rocket" # fieldMetadata "name" will be updated in-place ~ label = "Name" -> "Launch name" ~ isNullable = true -> false # fieldMetadata "legacyCode" will be destroyed - name = "legacyCode" Plan: 1 to add, 1 to change, 1 to destroy. Warning: 1 destructive change(s) will permanently delete data. - fieldMetadata "legacyCode" — drops the column and its data Destroys are irreversible. Review carefully before applying. ``` Grouped by metadata type, ordered create → update → destroy, `=` aligned per block. Internal keys (`id`, `workspaceId`, `*Id`, timestamps, nulls) are filtered; updates show only changed keys via the server `diff`. ## Destructive safety gate The server applies the manifest diff atomically, so every apply path computes the plan read-only first, then decides whether to apply: - **`twenty apply` / `dev --once`** — interactive `y/N` prompt when the plan deletes metadata; `--force` skips; **fails closed** (exit 1) in CI / non-TTY. - **`dev` (watch)** — creates/updates auto-apply with the compact summary; a save that deletes metadata shows an inline `y/N` prompt in the Ink UI. **Declining cleanly stops the watch** (exit 1) rather than leaving the session in a nagging/blocked state — since the atomic apply would otherwise also block the additive changes on every subsequent save until resolved. `dev --force` applies deletions without asking. ## Notes - `twenty apply` / `dev --once` now do one extra **read-only** dry-run before applying (to compute the plan + gate). `--force` skips it. - The watch sync step now skips API-client regeneration on any non-synced outcome (error or decline), avoiding a partial client write during shutdown. - The Ink watch UI keeps its existing compact summary; the full plan renders only on the plain-console surfaces — `dev` watch output is unchanged in the common case. ## Test plan - `npx nx typecheck twenty-sdk` ✓ - `npx nx lint twenty-sdk` ✓ - Unit tests (vitest): renderer (`format-sync-actions-plan.spec.ts`) + confirm gate (`confirm-destructive-apply.spec.ts`); existing summary / sync-step specs still green. - Manual against `simple-app` + a local server: `plan`, `apply` (destructive prompt + `--force` + non-TTY fail-closed), and the `dev` watch inline confirm (incl. decline → stop).
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Why Twenty
Twenty gives technical teams the building blocks for a custom CRM that meets complex business needs and quickly adapts as the business evolves. Twenty is the CRM you build, ship, and version like the rest of your stack.
Learn more about why we built Twenty
Installation
Cloud
The fastest way to get started. Sign up at twenty.com and spin up a workspace in under a minute, with no infrastructure to manage and always up to date.
Build an app
Scaffold a new app with the Twenty CLI:
npx create-twenty-app my-app
Define objects, fields, and views as code:
import { defineObject, FieldType } from 'twenty-sdk/define';
export default defineObject({
nameSingular: 'deal',
namePlural: 'deals',
labelSingular: 'Deal',
labelPlural: 'Deals',
fields: [
{ name: 'name', label: 'Name', type: FieldType.TEXT },
{ name: 'amount', label: 'Amount', type: FieldType.CURRENCY },
{ name: 'closeDate', label: 'Close Date', type: FieldType.DATE_TIME },
],
});
Then ship it to your workspace:
npx twenty app:publish --private
See the app development guide for objects, views, agents, and logic functions.
Self-hosting
Run Twenty on your own infrastructure with Docker Compose, or contribute locally via the local setup guide.
Everything you need
Twenty gives you the building blocks of a modern CRM (objects, views, workflows, and agents) and lets you extend them as code. Here's a tour of what's in the box.
Want to go deeper? Read the 
User Guide for product walkthroughs, or the Documentation for developer reference.
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