API:Categorías

Versión de MediaWiki:

≥ 1.11

Solicitud GET para ver categorías asociado a una página o páginas.

Este módulo puede ser utilizado como generator .

API Documentación

prop=categories (cl)

(main | query | categories)

• This module requires read rights.
• This module can be used as a generator.
• Source: MediaWiki
• License: GPL-2.0-or-later

List all categories the pages belong to.

• https://www.mediawiki.org/wiki/Special:MyLanguage/API:Categories

Specific parameters:

Other general parameters are available.

clprop

Which additional properties to get for each category:

sortkey

Adds the sortkey (hexadecimal string) and sortkey prefix (human-readable part) for the category.

timestamp

Adds timestamp of when the category was added.

hidden

Tags categories that are hidden with __HIDDENCAT__.

Values (separate with | or alternative): hidden, sortkey, timestamp

clshow

Which kind of categories to show.

Values (separate with | or alternative): !hidden, hidden

cllimit

How many categories to return.

Type: integer or max

The value must be between 1 and 500.

Default: 10

clcontinue

When more results are available, use this to continue. More detailed information on how to continue queries can be found on mediawiki.org.

clcategories

Only list these categories. Useful for checking whether a certain page is in a certain category.

Separate values with | or alternative.

Maximum number of values is 50 (500 for clients that are allowed higher limits).

cldir

The direction in which to list.

One of the following values: ascending, descending

Default: ascending

Examples:

Get a list of categories the page Albert Einstein belongs to.

api.php?action=query&prop=categories&titles=Albert%20Einstein [open in sandbox]

Get information about all categories used in the page Albert Einstein.

api.php?action=query&generator=categories&titles=Albert%20Einstein&prop=info [open in sandbox]

Ejemplo

Solicitud GET

Solicitud GET para ver categorías en una página.

api.php?action=query&format=json&titles=Janelle%20Monáe&prop=categories [Prueba en ApiSandbox]

Respuesta

{
    "continue": {
        "clcontinue": "13828397|Afrofuturists",
        "continue": "||"
    },
    "query": {
        "pages": {
            "13828397": {
                "pageid": 13828397,
                "ns": 0,
                "title": "Janelle Mon\u00e1e",
                "categories": [
                    {
                        "ns": 14,
                        "title": "Category:1985 births"
                    },
                    {
                        "ns": 14,
                        "title": "Category:21st-century American actresses"
                    },
                    {
                        "ns": 14,
                        "title": "Category:21st-century American singers"
                    },
                    ...
                ]
            }
        }
    }
}

Código de muestra

Python

#!/usr/bin/python3

"""
    get_categories.py

    MediaWiki API Demos
    Demo of `Categories` module: Get categories associated with a page.

    MIT License
"""

import requests

S = requests.Session()

URL = "https://en.wikipedia.org/w/api.php"

PARAMS = {
    "action": "query",
    "format": "json",
    "prop": "categories",
    "titles": "Janelle Monáe"
}

R = S.get(url=URL, params=PARAMS)
DATA = R.json()

PAGES = DATA["query"]["pages"]

for k, v in PAGES.items():
    for cat in v['categories']:
        print(cat["title"])

PHP

<?php
/*
    get_categories.php

    MediaWiki API Demos
    Demo of `Categories` module: Get categories associated with a page.

    MIT License
*/

$endPoint = "https://en.wikipedia.org/w/api.php";
$params = [
    "action" => "query",
    "format" => "json",
    "prop" => "categories",
    "titles" => "Janelle Monáe"
];

$url = $endPoint . "?" . http_build_query( $params );

$ch = curl_init( $url );
curl_setopt( $ch, CURLOPT_RETURNTRANSFER, true );
$output = curl_exec( $ch );
curl_close( $ch );

$result = json_decode( $output, true );

foreach( $result["query"]["pages"] as $k => $v ) {
    foreach( $v["categories"] as $k => $v ) {
        echo( $v["title"] . "\n" );
    }
}

JavaScript

/*
    get_categories.js

    MediaWiki API Demos
    Demo of `Categories` module: Get categories associated with a page.

    MIT License
*/

var url = "https://en.wikipedia.org/w/api.php"; 

var params = {
    action: "query",
    format: "json",
    prop: "categories",
    titles: "Janelle Monáe"
};

url = url + "?origin=*";
Object.keys(params).forEach(function(key){url += "&" + key + "=" + params[key];});

fetch(url)
    .then(function(response){return response.json();})
    .then(function(response) {
        var pages = response.query.pages;
        for (var p in pages) {
            for (var cat of pages[p].categories) {
                console.log(cat.title);
            }
        }
    })
    .catch(function(error){console.log(error);});

MediaWiki JS

/*
	get_categories.js

	MediaWiki API Demos
	Demo of `Categories` module: Get categories associated with a page.

	MIT License
*/

var params = {
		action: 'query',
		format: 'json',
		prop: 'categories',
		titles: 'Janelle Monáe'
	},
	api = new mw.Api();

api.get( params ).done( function ( data ) {
	var pages = data.query.pages,
		p;
	for ( p in pages ) {
		pages[ p ].categories.forEach( function ( cat ) {
			console.log( cat.title );
		} );
	}
} );

Errores posibles

Código	Info
clshow	Parámetro incorrecto: no se pueden proporcionar valores mutuamente excluyentes.

Historial de parámetros

• v1.20: Introducido cldir
• v1.16: Introducido clprop=hidden
• v1.15: Introducido clcategories
• v1.14: Introducido clshow
• v1.13: Introducido clcontinue, cllimit, clprop=timestamp

Véase también

• API:Categorymembers - Páginas de lista que son miembros de una determinada categoría.
• API:Allpages - Lista todas las páginas que se ajusten a ciertos criterios; también puede acceder a la categoría namespace .
• API:Allcategories - un módulo list que obtiene categorías de todo el wiki, basado en ciertos criterios relacionados con el título de la categoría.