User:Liangent/wb-lang


 * Target: Language fallback & conversion feature for data stored in Wikibase.
 * Mentor: User:Denny?

Introduction

 * Every user may define it's language preference order
 * Every language has its system fallback order
 * Some languages can be derivated from other (prime & sister) languages automatically
 * Display what user loves best to the extent of what's available in current data

Reasons to do this

 * Someting readable is better than nothing (especially in small languages, whose users usually know some other languages too)
 * Language with heavy subtag / variant use (such as zh: zh-cn, zh-tw etc. which can be derivated from others automatically with LanguageConverter)
 * Wikibase / Wikidata is under development. Having this (fallback + conversion) included in design is better that patching it in adhoc ways later.
 * WMF cares more and more about multilingual content these days, and is lack of people knowing about LanguageConverter :)

Technical notes

 * Caching issues need some care
 * Wikibase is under fast development. Talk with others to minimize merge conflicts

Timeline

 * May 27, 1900 UTC: Announced
 * May 28 - June 6
 * (I'll be busy at the first one or two weeks after June 17 so I may have to start early to compensate that)
 * Investigate places where visible (to users & other external developers such as bot authors) work is needed which may include API (new interfaces may be needed), repo front-end (obviously), client front-end (for example, the add-link dialog) and exported data (for example, data dumps, if we're planning to provide per-language dump at some time), and design the interface when needed.


 * June 7 - June 16
 * Investigate current data exchange structures (API, embedded JavaScript data or anything else etc) and see whether they still meet my need. Design new data structure when necessary.


 * June 17: Beginning
 * June 17 - June 30 (and as soon as any design is done)
 * Send designs of interface and data structure to mentor & others for review, and during this period I may be somehow busy, so it won't block me much if there's some delay in others' actions.


 * July 1 - July 20
 * Code up anything internal (data structures, API etc.) based on design done in previous time.


 * July 21 - July 29
 * Front-end development based on design, part I.


 * July 29, 1900 UTC - August 2, 1900 UTC: Mid-term
 * Writing some summary about current design and coding work as mid-term evaluation document.


 * August 3 - August 11
 * Front-end development, part II.


 * August 12 - August 25
 * Test it and see whether it works, tweak code when necessary


 * Auguest 26 - September 2
 * Test it on larger data set? (optional, continue coding work if it's not done)


 * September 3 - September 16
 * Try to have it deployed on Wikidata and test it in real world? (optional, continue coding work if it's not done)


 * September 16 / September 23, 0900 UTC - September 27, 1900 UTC: Final documentations and reports


 * Expected target: Have it deployed on Wikidata
 * Minimal target: Have a working codebase done

Links

 * Wikidata/Data model
 * Wikidata/Notes/Data model primer
 * Wikidata/Notes/Language fallback
 * Writing systems
 * Language in MediaWiki