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## Summary Fixes #17941 — Saving a blank subdomain causes a redirect to `.website.com`, effectively breaking the workspace. **Root cause:** Three layers all fail to reject an empty string `""`: 1. **Frontend (`SettingsDomain.tsx`):** `SaveButton` has both `onClick={onSave}` and `type="submit"`. The `onClick` fires first, calling `handleSave()` directly without running Zod validation. So `isDefined("")` returns `true`, the confirmation modal opens, and the blank subdomain is submitted. 2. **Backend DTO (`update-workspace-input.ts`):** The `subdomain` field has `@IsString()` + `@IsOptional()` but no pattern validation, so an empty string passes the DTO layer. 3. **Backend service (`workspace.service.ts:152`):** `if (payload.subdomain && ...)` — empty string is falsy in JS, so it skips `validateSubdomainOrThrow()` entirely and writes `subdomain: ""` to the database. **The crash:** After save, the redirect logic does `"myworkspace.website.com".replace("myworkspace", "")` → `".website.com"`, sending the user to an invalid URL. ## Fix - **Frontend:** Call `form.trigger()` at the start of `handleSave` to run Zod validation regardless of whether the function was invoked via `onClick` or `form.handleSubmit`. Returns early with validation error if invalid. - **Backend DTO:** Add `@Matches(/^[a-z0-9][a-z0-9-]{1,28}[a-z0-9]$/)` to reject invalid subdomains at the request validation layer (defense-in-depth). - **Backend service:** Change `if (payload.subdomain && ...)` to `if (isDefined(payload.subdomain) && ...)` so empty strings route through `validateSubdomainOrThrow()` instead of being silently skipped. ## Test plan - [x] Existing `is-subdomain-valid.util.spec.ts` tests pass (36/36) - [x] TypeScript type checks pass for both `twenty-server` and `twenty-front` - [x] oxlint passes on all changed files - [x] Prettier passes on all changed files - [ ] Manual: Navigate to Settings > Domains, clear the subdomain field, click Save — should show validation error, not redirect --------- Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com> Co-authored-by: Charles Bochet <charles@twenty.com> Co-authored-by: Charles Bochet <charlesBochet@users.noreply.github.com>
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Why Twenty
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.
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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
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