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fix(api): return 404 for a malformed work item identifier - #9870
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The route `workspaces/<slug>/issues/<project_identifier>-<issue_identifier>/`
splits a path segment on its last hyphen. When a caller passes a UUID there,
`issue_identifier` ends up as a hex fragment, and filtering the integer
`sequence_id` column on it raises
ValueError: Field 'sequence_id' expected a number but got 'e4c5320be796'.
`BaseAPIView.handle_exception` maps `ObjectDoesNotExist` to 404 but lets
`ValueError` fall through to a 500, so a simple bad URL looked like a server
fault. Validate the identifier up front and return the same 404 body a
genuinely missing work item produces.
This also fixes a latent bug in the same handler: when either identifier was
falsy the method fell off the end and returned `None`, which Django reports as
"view didn't return an HttpResponse object" - another 500.
Fixes PLANE-API-7YJ
Fixes PLANE-API-95M
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
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Included review availability: This review used your included allowance. Your plan provides up to 10 included reviews per hour; 8 remain after this review. 📝 WalkthroughWalkthroughThe workspace issue endpoint converts decimal issue identifiers to integers before querying. It returns 404 when an identifier is not decimal or integer conversion fails. ChangesWorkspace issue lookup
Priority: ➖ Normal Estimated code review effort: 2 (Simple) | ~10 minutes Change: Bug fix Merge Risk: ⚪ Minimal · up to Malformed and missing work-item identifiers have a 404 path on both routes. No actionable merge-blocking risk remains after normal checks. 🚥 Pre-merge checks | ✅ 5✅ Passed checks (5 passed)
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Inline comments:
In `@apps/api/plane/api/views/issue.py`:
- Around line 239-265: Convert issue_identifier to an integer before the Issue
query in the visible issue lookup flow, and return the existing 404 response if
conversion raises ValueError. Keep the isdecimal() validation and successful
query behavior unchanged.
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apps/api/plane/api/views/issue.py
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isdecimal() alone left one residual 500. CPython refuses to convert decimal strings longer than 4300 digits, so a path segment of 4301+ digits passes the isdecimal() guard, and Django's IntegerField.get_prep_value then re-raises the ValueError that this change set out to eliminate. Convert the identifier up front and treat a failed conversion as a 404, the same as any other malformed identifier. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
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`preview` grew its own guard for this endpoint, rejecting a non-decimal identifier before the query. This branch's validation subsumes it: it converts the identifier and also catches the `ValueError` `int()` raises for decimal strings longer than 4300 characters, which the guard alone lets through to the ORM as a 500. Kept this branch's structure and `preview`'s response body. The combined gate also answers when either identifier is absent — `preview`'s version fell off the end of the method and returned `None`.
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Description
These routes split a single path segment on its last hyphen:
When a caller passes a UUID in that position, e.g.
project_identifierbecomes6c8b7f5e-e6f8-48cd-b1d2andissue_identifierbecomese4c5320be796. Filtering the integersequence_idcolumn on that hex fragment raises:BaseAPIView.handle_exceptionmapsObjectDoesNotExistto 404 but letsValueErrorfall through to a 500, so a simple bad URL looked like a server fault. Sentry shows ~350 events across 40 users.This validates the identifier before it reaches the ORM and returns the same 404 body a genuinely missing work item already produces, so the two cases are indistinguishable to clients.
Two notes on the implementation:
None, which Django reports as "view didn't return an HttpResponse object" — another 500. The guard now covers that path explicitly.isdecimal()is used rather thanisdigit()becauseisdigit()also accepts superscript digits, whichint()then rejects — using it would have left a narrower version of the same 500 in place.Type of Change
Screenshots and Media (if applicable)
n/a — no user-facing surface.
Test Scenarios
Not exercised against a running instance:
apps/api/tests/currently contains onlyRUNNING_TESTS.md, so there is no suite to extend, and I had no local Django environment. Verified by inspection andpython -m py_compile.Worth confirming on review or in CI:
GET .../issues/<uuid>/→ 404 (was 500)GET .../issues/PROJ-123/for an existing work item → 200, unchangedGET .../issues/PROJ-999999/for a valid but absent sequence id → 404, unchangedwork-itemsaliasReferences
Summary by CodeRabbit