Issue tracker: #TextExtracts

Extension:TextExtracts

From Linux Web Expert

<translate> This {{<tvar name=1>#if:|{{{type}}}</tvar>|extension}} [[<tvar name=mwversion>Special:MyLanguage/MediaWiki 1.34#Bundled extensions</tvar>|comes with MediaWiki <tvar name=mwversion2>1.34</tvar>]] and above.</translate> <translate> Thus you do not have to download it again.</translate> <translate> However, you still need to follow the other instructions provided.</translate>
This extension is under code stewardship review and not actively maintained (<translate> task <tvar name=1>T256505</tvar></translate>). No new feature requests will be considered during this period.
MediaWiki extensions manual
File:OOjs UI icon advanced-invert.svg
TextExtracts
Release status: stable
Implementation API
Description Provides API with plain-text or limited HTML extracts of page content
Author(s) Max Semenik (MaxSemtalk)
Compatibility policy Snapshots releases along with MediaWiki. Master is not backward compatible.
MediaWiki >= 1.42
Database changes No
License GNU General Public License 2.0 or later
Download
<translate> Download extension</translate>
<translate> Git</translate> [?]:
Parameters
  • $wgExtractsExtendOpenSearchXml
  • $wgExtractsRemoveClasses
Hooks used
Quarterly downloads Lua error in Module:Extension at line 172: bad argument #1 to 'inNamespace' (unrecognized namespace name 'skin').
Public wikis using Lua error in Module:Extension at line 172: bad argument #1 to 'inNamespace' (unrecognized namespace name 'skin').
Translate the TextExtracts extension if it is available at translatewiki.net
Issues Open tasks · Report a bug

The TextExtracts extension provides an API which allows retrieval of plain-text or limited HTML (HTML with content for some CSS classes removed) extracts of page content.

Installation

  • <translate> [[<tvar name=2>Special:ExtensionDistributor/TextExtracts</tvar>|Download]] and move the extracted <tvar name=name>TextExtracts</tvar> folder to your <tvar name=ext>extensions/</tvar> directory.</translate>
    <translate> Developers and code contributors should install the extension [[<tvar name=git>Special:MyLanguage/Download from Git</tvar>|from Git]] instead, using:</translate>cd extensions/
    git clone https://gerrit.wikimedia.org/r/mediawiki/extensions/TextExtracts
  • <translate> Add the following code at the bottom of your <tvar name=1>LocalSettings.php </tvar> file:</translate> 
    wfLoadExtension( 'TextExtracts' );
  • File:OOjs UI icon check-constructive.svg <translate> Done</translate> – <translate> Navigate to <tvar name=special>Special:Version</tvar> on your wiki to verify that the extension is successfully installed.</translate>

Configuration settings

  • $wgExtractsRemoveClasses is an array of <tag>, <tag>.class, .<class>, #<id> which will be excluded from extraction.
    For example, $wgExtractsRemoveClasses[] = 'dl'; removes indented text, often used for non-templated hatnotes that are not desired in summaries.
    extension.json defines the defaults, of which the class "noexcerpt" is one - this may be added to any template to exclude it.
  • $wgExtractsExtendOpenSearchXml defines whether TextExtracts should provide its extracts to the Opensearch API module. The default is false.

API

extracts
Returns plain-text or limited HTML extracts of the given pages
<translate> This module cannot be used as a [[<tvar|1>Special:MyLanguage/API:Query#Generators</>|generator]].</translate>
<translate> Prefix</translate> ex
<translate> Required rights</translate> <translate> none</translate>
<translate> Post only?</translate> <translate> No</translate>
<translate> Generated help</translate> <translate> Current</translate>


Module "query+extracts" not found.

Another example

api.php?action=query&prop=extracts&exchars=100&explaintext&titles=Earth [<translate> try in ApiSandbox</translate>]
<translate> Result</translate>
{
    "query": {
        "pages": {
            "9228": {
                "pageid": 9228,
                "ns": 0,
                "title": "Earth",
                "extract": "Earth, also called the world and, less frequently, Gaia, (or Terra in some works of science fiction)..."
            }
        }
    }
}

Caveats

There are various things to be aware of when using the API or software that uses the API e.g. Extension:Popups .

  • We do not recommend the usage of `exsentences`. It does not work for HTML extracts and there are many edge cases for which it doesn't exist. For example "Arm. gen. Ing. John Smith was a soldier." will be treated as 4 sentences. We do not plan to fix this.
  • Inline images are stripped from the response (even in HTML mode). This means if you are using the Math extension and using formulae in your lead section they may not appear in the summary output.
  • In HTML mode we cannot guarantee well formed HTML. Resulting HTML may be invalid or malformed.
  • In plaintext mode:
    • citations may not be stripped (see phab:T197266)
    • if a paragraph ends with an HTML tag e.g. ref tag, new lines may be dropped (see phab:T201946)
    • new lines may be dropped after lists phab:T208132
    • Articles must begin with the lead paragraph for an extract to be generated. The use of any template, and/or unclosed or empty HTML element may result in no preview for the article. E.g. "<div></div>hello" will give an empty extract.

FAQ

How can I remove content from a page preview/extract?

TextExtracts will strip any element that is marked with the class .noexcerpt. This is provided by the $wgExtractsRemoveClasses configuration variable (which also defines some other excluded elements).

See also

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