Module:Hatnote/doc

This is a documentation subpage for Module:Hatnote.
It contains usage information, categories and other content that is not part of the original module page.

This Lua module is used in MediaWiki:Wantedpages-summary, and on approximately 1,650,000 pages, or roughly 49401% of all pages.
Changes to it can cause immediate changes to the Wikipedia user interface.
To avoid major disruption and server load, any changes should be tested in the module's /sandbox or /testcases subpages, or in your own module sandbox. The tested changes can be added to this page in a single edit. Please discuss changes on the talk page before implementing them.

This module depends on the following other modules:

This module uses TemplateStyles:

Module:Hatnote/styles.css

This is a meta-module that provides various functions for making hatnotes. It implements the {{hatnote}} template, for use in hatnotes at the top of pages, and the {{format link}} template, which is used to format a wikilink for use in hatnotes. It also contains a number of helper functions for use in other Lua hatnote modules.

Use from wikitext

The functions in this module cannot be used directly from #invoke, and must be used through templates instead. Please see Template:Hatnote and Template:Format link for documentation.

Use from other Lua modules

To load this module from another Lua module, use the following code.

local mHatnote = require('Module:Hatnote')

You can then use the functions as documented below.

Hatnote

mHatnote._hatnote(s, options)

Formats the string s as a hatnote. This encloses s in the tags <div class="hatnote">...</div>. Options are provided in the options table. Options include:

options.extraclasses - a string of extra classes to provide
options.selfref - if this is not nil or false, adds the class "selfref", used to denote self-references to Wikipedia (see Template:Selfref))

The CSS of the hatnote class is defined in Module:Hatnote/styles.css.

Example 1

mHatnote._hatnote('This is a hatnote.')

Produces: <div class="hatnote">This is a hatnote.</div>

Displays as:

Example 2

mHatnote._hatnote('This is a hatnote.', {extraclasses = 'boilerplate seealso', selfref = true})

Produces: <div class="hatnote boilerplate seealso selfref">This is a hatnote.</div>

Displayed as:

Find namespace id

mHatnote.findNamespaceId(link, removeColon)

Finds the namespace id of the string link, which should be a valid page name, with or without the section name. This function will not work if the page name is enclosed with square brackets. When trying to parse the namespace name, colons are removed from the start of the link by default. This is helpful if users have specified colons when they are not strictly necessary. If you do not need to check for initial colons, set removeColon to false.

Examples: mHatnote.findNamespaceId('Lion') → 0; mHatnote.findNamespaceId('Category:Lions') → 14; mHatnote.findNamespaceId(':Category:Lions') → 14; mHatnote.findNamespaceId(':Category:Lions', false) → 0 (the namespace is detected as ":Category", rather than "Category")

Make wikitext error

mHatnote.makeWikitextError(msg, helpLink, addTrackingCategory)

Formats the string msg as a red wikitext error message, with optional link to a help page helpLink. Normally this function also adds Category:Hatnote templates with errors (0). To suppress categorization, pass false as third parameter of the function (addTrackingCategory).

Examples:

mHatnote.makeWikitextError('an error has occurred') → Error: an error has occurred.

mHatnote.makeWikitextError('an error has occurred', 'Template:Example#Errors') → Error: an error has occurred (help).

Examples

For an example of how this module is used in other Lua modules, see Module:Main