fix(auth): hide sign-up on login and onboarding when registration is closed - #503
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…closed With ALLOW_REGISTRATION=false the login page still linked to /onboarding and the onboarding page still rendered the GitHub/Google/email sign-up forms, even though the API rejects the sign-up. Expose getIsRegistrationAllowed through a public auth.isRegistrationAllowed query and use it to hide the link and replace the forms with a short message. Valid invite links and a fresh install with no users still get the sign-up forms, matching the server-side check.
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Included review availability: Your plan provides up to 8 included reviews per hour; 7 remain after this review. 📝 WalkthroughWalkthroughThe auth router now exposes invite-aware registration availability. Login forwards ChangesRegistration gating
Priority: ➖ Normal Estimated code review effort: 3 (Moderate) | ~20 minutes Change: Bug fix · Severity of issue fixed: Medium Sequence Diagram(s)sequenceDiagram
participant Visitor
participant LoginRoute
participant OnboardingRoute
participant AuthRouter
Visitor->>LoginRoute: Open login route
LoginRoute->>AuthRouter: Query registration availability with inviteId
AuthRouter-->>LoginRoute: Return availability
LoginRoute-->>Visitor: Provide encoded onboarding link
Visitor->>OnboardingRoute: Open onboarding route
OnboardingRoute->>AuthRouter: Query registration availability with inviteId
AuthRouter-->>OnboardingRoute: Return availability
alt Registration allowed
OnboardingRoute-->>Visitor: Render sign-up flow
else Registration unavailable
OnboardingRoute-->>Visitor: Render message and sign-in link
end
Merge Risk: ⚪ Minimal · up to The unavailable-registration page accurately explains that invitations may be disabled, so no verified merge-blocking issue remains. 🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
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Inline comments:
In `@apps/start/src/routes/_login.login.tsx`:
- Line 27: Update the login route’s isRegistrationAllowed query to pass the
validated inviteId instead of an empty input, and ensure the same inviteId
remains included in the /onboarding link.
In `@packages/trpc/src/routers/auth.ts`:
- Line 595: Update the registration-availability query around
getIsRegistrationAllowed to return a discriminated result that distinguishes
allowed, registration_disabled, and invite_invalid outcomes. Update the
onboarding loader and its rendering in _public.onboarding.tsx to use that result
when selecting the message, and update signUpEmail to enforce the policy via the
result’s allowed field.
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apps/start/src/routes/_login.login.tsxapps/start/src/routes/_public.onboarding.tsxpackages/trpc/src/routers/auth.ts
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Pass the login page's inviteId to isRegistrationAllowed and carry it into the onboarding link, so invited users still see sign-up when ALLOW_REGISTRATION=false. Reword the invalid-invite message to also cover ALLOW_INVITATION=false. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01QBWFWqjbUQGS1c9LsM2bxX
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01NZuAZiVnEFqt9qgTjo2tsk
With
ALLOW_REGISTRATION=false,/loginstill shows "Don't have an account? Create one today" and/onboardingstill shows the GitHub/Google/email sign-up forms. The API already rejects the sign-up (getIsRegistrationAllowed), but the dashboard never finds out, so people fill in the form and then get "Registrations are not allowed".Change
auth.isRegistrationAllowedis a new public query that just returnsgetIsRegistrationAllowed(inviteId). The existing/api/configenvs aren't enough here because the rule depends on the database too: the first user can always register, and a valid invite gets past the flag./loginloads it in the route loader and hides the "Create one today" link when it'sfalse./onboardingloads it with the page'sinviteId. When it'sfalsethe page shows "Registration is disabled" with a Sign in link, or "Invitation not valid" if the link had aninviteIdthe server doesn't accept. Otherwise the page is unchanged.Because the UI uses the same check as the API, these still see the sign-up forms: cloud (
ALLOW_REGISTRATIONunset), a fresh self-hosted install with no users, and invite links whileALLOW_INVITATIONisn'tfalse.How I tested
I ran the API and dashboard locally against Postgres, Redis and ClickHouse in Docker, with one existing user:
ALLOW_REGISTRATION=false:/loginhas no sign-up link, and/onboardingshows the disabled message./onboarding?inviteId=<valid invite>still shows the form, and I signed up through it; the new user was added to the inviting org.ALLOW_REGISTRATION=falsewith no users: both pages look the same as before, so first-time setup still works.ALLOW_REGISTRATION=true, and also unset: both pages look the same as before. The one exception is aninviteIdthat no longer exists. That now shows "Invitation not valid" instead of a form the API would reject. I checkedsignUpEmailwith that id and it returns "Registrations are not allowed".tsc --noEmitpasses inapps/start,packages/trpcandapps/api. Thepackages/trpctests andregistration.service.test.tspass.ultracite checkon the touched files shows only the errors that are already onmain.Before,


ALLOW_REGISTRATION=false:After,



ALLOW_REGISTRATION=false:Overlap with open PRs
#492 (hide unconfigured OAuth buttons) and #496 (generic OIDC) change the same two route files. This PR doesn't touch the OAuth button blocks. It only adds a loader, one
useLoaderDataline, the login link condition and an early return on onboarding. Whichever PR merges second will get small conflicts around the routeloaderand the first lines of the component. They're easy to resolve: keep both loaders' prefetches and both hook lines.Fixes #495
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