fix(api): filter "Updated At" by updated_at column, not created_at

[sanjibani]

Summary

filter_updated_at in apps/api/plane/utils/issue_filters.py was passing created_at__date as the date_term to date_filter — a copy-paste from filter_created_at. The "Updated At -> is -> today" filter was therefore checking the issue's creation date instead of its last-modified date. Work items created earlier but updated today silently disappeared from the results.

The typo was in both the GET and POST branches of filter_updated_at. Replaced created_at__date with updated_at__date and added a focused unit test in apps/api/plane/tests/unit/utils/test_issue_filters.py that pins the column name.

Test plan

• New unit test TestFilterUpdatedAt covers the GET, GET-with-CSV, POST, and prefixed-cycle_issue__ cases, asserting every emitted filter key references updated_at and none reference created_at.
• Existing tests in tests/unit/utils/ continue to apply.

Refs #9316

Summary by CodeRabbit

• Bug Fixes

  • Fixed issue date filtering so updated_at now matches against the correct update date field for both GET and POST inputs (including date-based filtering).

• Tests

  • Added unit test coverage to ensure updated_at filtering targets the right date field, supports comma-separated and list-style parameters, honors optional prefixes, and treats empty filter values as a no-op.

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[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 02316e39-34d8-4b68-86da-b8dffa36509f

📥 Commits

Reviewing files that changed from the base of the PR and between c8c22ca and d2e8d10.

📒 Files selected for processing (2)

• apps/api/plane/tests/unit/utils/test_issue_filters.py
• apps/api/plane/utils/issue_filters.py

🚧 Files skipped from review as they are similar to previous changes (2)

• apps/api/plane/tests/unit/utils/test_issue_filters.py
• apps/api/plane/utils/issue_filters.py

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📝 Walkthrough

Walkthrough

filter_updated_at now filters both GET and non-GET requests on updated_at__date instead of created_at__date. New unit tests cover GET and POST inputs, comma-separated and list date values, prefixes, and empty input behavior.

Changes

Updated-at filter fix

Layer / File(s)	Summary
Filter target and regression coverage apps/api/plane/utils/issue_filters.py, apps/api/plane/tests/unit/utils/test_issue_filters.py	filter_updated_at uses updated_at__date in both branches, and new tests verify GET/POST handling, CSV/list inputs, prefix support, and no-op behavior for empty values.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

Poem

A rabbit hopped by moonlit code,
And sniffed where dates were gently turned;
No created_at in the trail tonight,
Just updated_at, all crisp and earned.
🐰✨

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title is concise and accurately reflects the core fix from created_at to updated_at.
Description check	✅ Passed	The description has a detailed summary, test plan, and issue reference; the omitted template sections are non-critical.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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