feat: Add regex option u for unicode support in Parse.Query.matches for MongoDB

[mtrezza]

Pull Request

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• Any contribution is under this license.
• Link this pull request to an issue.

Issue

Parse Server doesn't support the unicode regex option.

Approach

Add regex option u for unicode support in Parse.Query.matches

Summary by CodeRabbit

• New Features

  • Regex queries now support the 'u' (Unicode) option, enabling Unicode-aware pattern matching. Supported flags expand from i, m, x, s to i, m, x, s, u.

• Bug Fixes

  • Validation of regex options improved to avoid rejecting queries that use the 'u' flag, preventing false errors for Unicode regex searches.

[parse-github-assistant]

🚀 Thanks for opening this pull request!

[parseplatformorg]

🎉 Snyk checks have passed. No issues have been found so far.

✅ security/snyk check is complete. No issues have been found. (View Details)

[coderabbitai]

📝 Walkthrough

Walkthrough

Allowed $regex $options in the query validator was broadened to include the Unicode 'u' flag (pattern changed from /^[imxs]+$/ to /^[imxsu]+$/). A test was added verifying regex matching with the 'u' flag against a Unicode (Chinese) string. No public/exported interfaces changed.

Changes

Cohort / File(s)	Summary
Query regex options validation src/Controllers/DatabaseController.js	Expanded allowed $regex $options pattern from /^[imxs]+$/ to /^[imxsu]+$/, permitting the 'u' flag and changing error behavior for previously rejected options.
Tests — regex unicode support spec/ParseQuery.spec.js	Added a test case that saves an object with Chinese characters and asserts a regex query using the u (unicode) flag returns the expected result.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~8 minutes

Pre-merge checks and finishing touches

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Description Check	⚠️ Warning	The description includes the standard Pull Request, Issue, and Approach headings but fails to link to a specific issue by providing a “Closes:” line and omits the required Tasks section with checkboxes for tests, documentation, security checks, and new error codes, so it does not adhere fully to the repository template.	Add a “Closes: #ISSUE_NUMBER” under the Issue section and include a Tasks section listing the test additions, documentation updates, security check, and new error codes as appropriate with checkboxes to match the repository template.

✅ Passed checks (2 passed)

Check name	Status	Explanation
Docstring Coverage	✅ Passed	No functions found in the changes. Docstring coverage check skipped.
Title Check	✅ Passed	The title clearly and concisely summarizes the primary change by specifying the addition of the regex u option for Unicode support in Parse.Query.matches, accurately reflecting the code updates without extraneous detail.

✨ Finishing touches

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🧪 Generate unit tests (beta)

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• Post copyable unit tests in a comment

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[coderabbitai]

Actionable comments posted: 1

📜 Review details

Configuration used: CodeRabbit UI

Review profile: CHILL

Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between f755a5d and 9d55d2e.

📒 Files selected for processing (1)

• src/Controllers/DatabaseController.js (1 hunks)

⏰ Context from checks skipped due to timeout of 90000ms. You can increase the timeout in your CodeRabbit configuration to a maximum of 15 minutes (900000ms). (12)

• GitHub Check: PostgreSQL 16, PostGIS 3.5
• GitHub Check: PostgreSQL 17, PostGIS 3.5
• GitHub Check: PostgreSQL 15, PostGIS 3.5
• GitHub Check: PostgreSQL 15, PostGIS 3.3
• GitHub Check: PostgreSQL 15, PostGIS 3.4
• GitHub Check: Node 18
• GitHub Check: Redis Cache
• GitHub Check: Node 20
• GitHub Check: MongoDB 6, ReplicaSet
• GitHub Check: MongoDB 8, ReplicaSet
• GitHub Check: MongoDB 7, ReplicaSet
• GitHub Check: Docker Build

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 92.99%. Comparing base (89fad46) to head (9231194).
⚠️ Report is 3 commits behind head on alpha.

Additional details and impacted files

@@            Coverage Diff             @@
##            alpha    #9867      +/-   ##
==========================================
- Coverage   93.01%   92.99%   -0.02%     
==========================================
  Files         187      187              
  Lines       15097    15097              
  Branches      174      174              
==========================================
- Hits        14042    14040       -2     
- Misses       1043     1045       +2     
  Partials       12       12              

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[parseplatformorg]

🎉 This change has been released in version 8.3.0-alpha.2