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Maniphest T405730

[MEX] M4.1.5 - Mathematical expression: Simple text input (string) with value specific output
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Assigned To
karapayneWMDE
Authored By
Alice.moutinho
Sep 26 2025, 12:42 PM
Tags
Referenced Files
F71619209: Screenshot 2026-01-28 at 08.31.05.png
Jan 28 2026, 1:53 PM
F71519023: Screenshot 2026-01-13 at 14.39.57.png
Jan 13 2026, 1:43 PM
F66754492: Screenshot 2025-10-16 at 13.36.27.png
Oct 16 2025, 11:46 AM
Subscribers
Aklapper
Alice.moutinho
karapayneWMDE
Lucas_Werkmeister_WMDE
mahmoud.abdelsattar.wmde

Description

As a user, i want to add Mathematical expressions to wikidata, and see them displayed on the main page.

Screenshot 2026-01-13 at 14.39.57.png (1×2 px, 222 KB)

  • the input field for mathematical expression is a simple text input
  • the error check only occurs once the user attempts to publish - therefore if there is an error, we remain consistent with errors while publishing and display an error message: it reads "Could not save due to an error. Malformed input: syntax error"
  • In addition to the error message we show the error state in the input field
  • On the display side, we show whatever the tool math extensions gives us. On desktop it looks like this:
    Screenshot 2026-01-28 at 08.31.05.png (250×1 px, 32 KB)

Acceptance Criteria:

  • The input field for mathematical expression is a simple text input.
  • The math equations are only supported in LTR (for now)
  • In case the math equation is too long, it should be truncated (overflow-x) with a gradient like the Musical notation.
  • The valid math equation will be placed as it is from the server rendering.

Details

Related Changes in Gerrit:
SubjectRepoBranchLines +/-
Add missing statementId property to snakValue specmediawiki/extensions/Wikibasemaster+2 -1
T405730: Mathematical expression: Simple text inputmediawiki/extensions/Wikibasemaster+75 -17
Customize query in gerrit

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Event Timeline

Alice.moutinho created this task.Sep 26 2025, 12:42 PM
Restricted Application added a subscriber: Aklapper. · View Herald TranscriptSep 26 2025, 12:42 PM
Alice.moutinho renamed this task from Simple text input (string) with different output to Simple text input (string) with value specific output.Sep 26 2025, 12:50 PM
Maintenance_bot added a project: Wikidata.Sep 26 2025, 1:31 PM
Alice.moutinho updated the task description. (Show Details)Oct 14 2025, 3:21 PM
karapayneWMDE renamed this task from Simple text input (string) with value specific output to [MEX] 4.1.1 - Simple text input (string) with value specific output.Oct 15 2025, 9:19 AM
karapayneWMDE added a parent task: T407324: [MEX] M4 - Create editing functionality for the remaining datatypes for statements on Items on mobile.
Alice.moutinho renamed this task from [MEX] 4.1.1 - Simple text input (string) with value specific output to [MEX] 4.1.1 - Mathematical expression: Simple text input (string) with value specific output.Oct 16 2025, 11:46 AM
Alice.moutinho removed Alice.moutinho as the assignee of this task.
Alice.moutinho updated the task description. (Show Details)
karapayneWMDE moved this task from Incoming to MEX Incoming column on the Wikidata-Omega board.Oct 21 2025, 4:52 PM
karapayneWMDE renamed this task from [MEX] 4.1.1 - Mathematical expression: Simple text input (string) with value specific output to [MEX] M4.1.1 - Mathematical expression: Simple text input (string) with value specific output.Nov 24 2025, 8:35 AM
karapayneWMDE mentioned this in T394621: [MEX] Mobile Editing Experience of Items Project.Nov 24 2025, 8:42 AM
karapayneWMDE added a parent task: T410855: [MEX] M4.1 First Pass + Functionalty.Nov 24 2025, 8:46 AM
karapayneWMDE removed a parent task: T407324: [MEX] M4 - Create editing functionality for the remaining datatypes for statements on Items on mobile.Nov 24 2025, 8:50 AM
karapayneWMDE moved this task from MEX Incoming column to Ready for Task Time (Story Writing) on the Wikidata-Omega board.Jan 12 2026, 9:31 AM
mahmoud.abdelsattar.wmde updated the task description. (Show Details)Jan 12 2026, 2:51 PM
mahmoud.abdelsattar.wmde updated the task description. (Show Details)Jan 12 2026, 3:09 PM
karapayneWMDE assigned this task to Alice.moutinho.Jan 13 2026, 10:04 AM
karapayneWMDE updated the task description. (Show Details)

plz error hanlde

karapayneWMDE moved this task from Ready for Task Time (Story Writing) to The Backlog on the Wikidata-Omega board.Jan 13 2026, 10:23 AM
Alice.moutinho updated the task description. (Show Details)Jan 13 2026, 1:43 PM
Arian_Bozorg closed subtask T407248: [MEX] M4.1.1 - Func - Commons media statements on mobile as Resolved.Jan 15 2026, 6:21 PM
Arian_Bozorg closed subtask T407247: [MEX][SPIKE] M4.1.10 - Musical notation statements on mobile as Resolved.Jan 19 2026, 1:49 AM
mahmoud.abdelsattar.wmde claimed this task.Jan 28 2026, 7:39 AM
mahmoud.abdelsattar.wmde moved this task from The Backlog to The Board on the Wikidata-Omega board.
mahmoud.abdelsattar.wmde edited projects, added Wikidata-Omega (The Board); removed Wikidata-Omega.
mahmoud.abdelsattar.wmde moved this task from new to the board to In Development on the Wikidata-Omega (The Board) board.
Alice.moutinho updated the task description. (Show Details)Jan 28 2026, 1:53 PM
Alice.moutinho updated the task description. (Show Details)
gerritbot added a comment.Jan 29 2026, 4:16 PM

Change #1235065 had a related patch set uploaded (by Mahmoud-abdelsattar; author: Mahmoud-abdelsattar):

[mediawiki/extensions/Wikibase@master] T405730: Mathematical expression: Simple text input

https://gerrit.wikimedia.org/r/1235065

gerritbot added a project: Patch-For-Review.Jan 29 2026, 4:16 PM
mahmoud.abdelsattar.wmde added a comment.Feb 2 2026, 1:57 PM

🔄 Development Handover Summary

NOTE: 🟢 Move from "In Development" > "Ready for Review"

📋 Overview

This work adds support for Math expressions in the Wikibase UI 2025 editing interface. Users can now edit mathematical formulas on items that have math-type properties. The implementation includes:

  • Rendering math expressions in both read and edit modes.
  • Displaying user-friendly error messages when invalid syntax is submitted.
  • Visual error state on input fields when validation fails.
  • Proper error handling that captures detailed API error messages.

✅ Work Completed

  • Added math datatype to StringValueStrategy for editing support.
  • Implemented math value rendering using MediaWiki's Math extension.
  • Added [extractErrorMessage](repo/resources/wikibase.wbui2025/utils.js) utility function to parse API errors and show user-friendly messages.
  • Implemented hasValidationError state in snak stores to show input error styling.
  • Fixed save button re-enablement after validation errors.
  • Implemented Jest tests with proper testing logic.

Architecture/Design Decisions:

  • Reused StringValueStrategy for math: Math expressions use the same strategy as strings since both are text-based inputs.
  • hasValidationError in snak store: Error state is stored per-snak to allow targeted error styling.
  • Extract error from API response: Uses error.errors[0]['*'] for user-friendly message with wikibase-error-save-generic prefix.

Dependencies:

  • Uses existing wikibase-error-save-generic translation key from lib/i18n/en.json.
  • Uses Codex cdx-text-input--status-error class for input error styling.

🧪 Testing/Technical Status

Completed:

  • Manual testing performed for math expression editing
  • Manual testing performed for validation error display
  • Manual testing performed for error state on input
  • JavaScript syntax validation passing

Manual Testing Performed:

  • Created/edited math statements with valid LaTeX - works correctly.
  • Submitted invalid LaTeX syntax - error message displays with specific error.
  • Corrected invalid value after error - save button re-enables.
  • Error styling appears on input field when validation fails.
  • Error styling clears when user starts typing.

Known Test Limitations:

  • No Cypress E2E tests were added.

🔗 Related Resources

Related Gerrit patch:
https://gerrit.wikimedia.org/r/c/mediawiki/extensions/Wikibase/+/1235065

Handover Date: 02-02-2026
Last Updated By: Mahmoud
Status: Ready for Peer Review

mahmoud.abdelsattar.wmde removed mahmoud.abdelsattar.wmde as the assignee of this task.Feb 2 2026, 1:58 PM
mahmoud.abdelsattar.wmde moved this task from In Development to Ready for Peer Review on the Wikidata-Omega (The Board) board.
mahmoud.abdelsattar.wmde subscribed.
Lucas_Werkmeister_WMDE claimed this task.Feb 6 2026, 12:40 PM
Lucas_Werkmeister_WMDE moved this task from Ready for Peer Review to In Peer Review on the Wikidata-Omega (The Board) board.
karapayneWMDE renamed this task from [MEX] M4.1.1 - Mathematical expression: Simple text input (string) with value specific output to [MEX] M4.1.5 - Mathematical expression: Simple text input (string) with value specific output.Feb 10 2026, 4:26 PM
karapayneWMDE mentioned this in T407324: [MEX] M4 - Create editing functionality for the remaining datatypes for statements on Items on mobile.Feb 10 2026, 4:39 PM
karapayneWMDE removed a subtask: T407247: [MEX][SPIKE] M4.1.10 - Musical notation statements on mobile.Feb 10 2026, 4:47 PM
AudreyPenven_WMDE mentioned this in T417413: [MEX] Cleanup unsupported datatypes code.Feb 13 2026, 3:02 PM
Lucas_Werkmeister_WMDE mentioned this in T417797: [MEX] Display errors using HTML format.Feb 18 2026, 3:54 PM
Lucas_Werkmeister_WMDE removed Lucas_Werkmeister_WMDE as the assignee of this task.Feb 18 2026, 4:55 PM
Lucas_Werkmeister_WMDE moved this task from In Peer Review to Product Verification on the Wikidata-Omega (The Board) board.
Lucas_Werkmeister_WMDE subscribed.
gerritbot added a comment.Feb 18 2026, 5:37 PM

Change #1235065 merged by jenkins-bot:

[mediawiki/extensions/Wikibase@master] T405730: Mathematical expression: Simple text input

https://gerrit.wikimedia.org/r/1235065

ReleaseTaggerBot added a project: MW-1.46-notes (1.46.0-wmf.17; 2026-02-24).Feb 18 2026, 6:00 PM
Maintenance_bot removed a project: Patch-For-Review.Feb 18 2026, 6:31 PM
gerritbot added a comment.Feb 19 2026, 8:45 AM

Change #1240604 had a related patch set uploaded (by Arthur taylor; author: Arthur taylor):

[mediawiki/extensions/Wikibase@master] Add missing statementId property to snakValue spec

https://gerrit.wikimedia.org/r/1240604

gerritbot added a project: Patch-For-Review.Feb 19 2026, 8:45 AM
gerritbot added a comment.Feb 19 2026, 9:36 AM

Change #1240604 merged by jenkins-bot:

[mediawiki/extensions/Wikibase@master] Add missing statementId property to snakValue spec

https://gerrit.wikimedia.org/r/1240604

Maintenance_bot removed a project: Patch-For-Review.Feb 19 2026, 10:31 AM
karapayneWMDE closed this task as Resolved.Feb 23 2026, 7:07 PM
karapayneWMDE claimed this task.
karapayneWMDE moved this task from Product Verification to Done - Moving a task here will move it to the completed tasks workboard, resolve the ticket, and assign it to whomever made the move on the Wikidata-Omega (The Board) board.
karapayneWMDE edited projects, added Wikidata-Omega (Completed Tasks); removed Wikidata-Omega (The Board).
karapayneWMDE moved this task from Newly completed tasks to 2026 Q1 on the Wikidata-Omega (Completed Tasks) board.Feb 23 2026, 7:25 PM
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