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Extensão:Cargo

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Manual de extensões do MediaWiki
Cargo
Estado de lançamento: estável
Implementação Página espacial , API , Função do analisador
Descrição Uma extensão que permite o armazenamento e a consulta de dados contidos nas predefinições.
Autor(es) Yaron Koren <yaron57@gmail.com> (Yaron Koren discussão )
Última versão 3.9.3 (julho de 2026)
Política de compatibilidade Original mantém a compatibilidade com versões anteriores.
MediaWiki 1.42+
Alterações à base de dados Sim
Composer mediawiki/cargo
  • $wgCargoFileDataColumns
  • $wgCargoDrilldownLargestFontSize
  • $wgCargoDecimalMark
  • $wgCargoDefaultStringBytes
  • $wgCargoAllowedSQLFunctions
  • $wgCargoHideNamespaceName
  • $wgCargoMaxVisibleHierarchyDrilldownValues
  • $wgCargoDrilldownSmallestFontSize
  • $wgCargoDBTableOptions
  • $wgCargoMaxQueryLimit
  • $wgCargoDefaultMapService
  • $wgCargoStoreUseTemplateArgsFallback
  • $wgCargoPageDataColumns
  • $wgCargoIgnoreBacklinks
  • $wgCargoDigitGroupingCharacter
  • $wgCargoDefaultQueryLimit
  • $wgCargoDrilldownNumRangesForNumbers
  • $wgCargo24HourTime
  • $wgCargoLegacyNullLuaFieldsAsEmptyString
  • $wgCargoTablesPrioritizeReplacements
  • $wgCargoRecurringEventMaxInstances
  • $wgCargoDrilldownUseTabs
  • $wgCargoDrilldownMinValuesForComboBox
  • $wgCargoMapClusteringMinimum
  • recreatecargodata
  • deletecargodata
  • runcargoqueries
Licence GNU - Licença Pública Geral 2.0 ou superior
Transferência
Exemplo Wikimedia Australia's Cargo Tables
Traduza a extensão Cargo
Problemas Tarefas em aberto · Reportar um erro

Cargo é uma extensão para MediaWiki que fornece uma maneira leve de armazenar e consultar os dados contidos nas chamadas para predefinições, como infoboxes. É um conceito similar ao da extensão [$url MediaWiki Semântica], mas oferece um número de vantagens, incluindo facilidade de instalação e uso.

O Cargo armazena todos os seus dados em tabelas de banco de dados, que podem ser colocadas no próprio banco de dados do MediaWiki (o padrão) ou em um banco de dados separado. For the most part, each stored template gets its data stored in a single DB table, with a column for each relevant template parameter. There are a few exceptions to this: the handling of template fields that hold arrays/lists of values, and of fields that hold geographical coordinates, is more complex, due to poor native handling of those data types in most DB systems. And multiple templates can be set to all store their data in one DB table.

The extension defines a number of parser functions; these three are the most important:

  • #cargo_declareplaced within the ‎<noinclude> part of a template; it defines the schema for a table.
  • #cargo_storestores one row to a Cargo table; usually placed within the ‎<includeonly> part of a template.
  • #cargo_queryqueries one or more Cargo data tables, using SQL components.

The other defined parser functions are:

  • #cargo_attachdefines a template as adding rows to a table declared elsewhere.
  • #cargo_compound_querydisplays the results of multiple queries in one place.
  • #cargo_display_mapdisplays a map showing a single point.
  • #recurring_eventprints out the dates for a recurring event; for use by #cargo_store.

Cargo also defines various interfaces for viewing and drilling down through this stored data. As such, it adds the following special pages:

  • Special:CargoQuery
  • Special:CargoTableDiagram
  • Special:CargoTables
  • Special:Drilldown

Cargo has been tested, and works, with the MySQL and PostgreSQL database systems. In theory, it also supports SQLite, but it has not been well-tested with SQLite and may not work.

This version of the Cargo extension requires MediaWiki 1.42+.

Below are links to the entire documentation.

  • Download and installation
    How to download Cargo via either Git, a standard download, or a software package; and how to install it.
  • Quick start guide
    A short guide to generate Cargo-based templates and Cargo tables, especially in conjunction with the Page Forms extension.
  • Other documentation
    Links to other forms of documentation
  • SMW migration guide
    A guide for modifying templates and queries that use Semantic MediaWiki to switch to Cargo instead.
  • Storing data
    Using #cargo_declare, #cargo_attach and #cargo_store to create and populate Cargo tables.
  • Querying data
    Querying Cargo data with #cargo_query, #cargo_compound_query and other tools.
  • Display formats
    The various display formats available, including lists, charts, maps and calendars.
  • Browsing data
    Browsing the Cargo data using the built-in tools: Special:Drilldown, Special:CargoQuery, Special:CargoTables
  • Exporting data
    Exporting Cargo data into output formats including: CSV, JSON, RSS
  • Other features
    Other features of Cargo, including displaying maps and making use of Lua .
  • Common problems
    Common issues that people have run into.
  • Known bugs and planned features
    Known bugs in the software, and potential workarounds for them; plus features that are planned in the current development roadmap.
  • Getting support
    Where to ask questions, submit bug reports, submit feature requests, submit fixes, and add new translations.
  • Authors and credits
    The main authors, others who have contributed to the code, and credits to other organizations and software projects.
  • Version history
    The release history of Cargo.
  • Sites that use Cargo
    A small sampling of the wikis that use Cargo.
  • Cargo and Semantic MediaWiki
    A comparison of Cargo to its main alternative, Semantic MediaWiki, in terms of both features and performance.
  • FAQ
    Frequently-asked questions.

Configuration

Below are Cargo's global configuration settings along with their default values.

To configure Cargo to use a separate database instead of the MediaWiki database, the following settings are provided:

Separate database configuration settings
Setting Default Description
$wgCargoDBtype null Database type.
$wgCargoDBserver null Host name or IP address of database server.
$wgCargoDBname null Name of the database.
$wgCargoDBuser null Database username.
$wgCargoDBpassword null The password for $wgCargoDBuser.
$wgCargoDBprefix null Database table name prefix.
$wgCargoDBRowFormat null Database row format.
$wgCargoDBTableOptions null Comma-separated options, analogous to $wgDBTableOptions.

For character configuration as related to numbers, the following configuring settings are provided:

Character configuration settings
Setting Default Description
$wgCargoDecimalMark . Decimal character for numbers.
$wgCargoDigitGroupingCharacter , Thousands digit separator.

The remaining global configuration settings are as follows:

Setting Default Description
$wgCargoAllowedSQLFunctions [1] Sets allowed SQL functions.
$wgCargoRecurringEventMaxInstances 100 The number of max instances to store for recurring events with no set end date.
$wgCargoDefaultStringBytes 300 The default number of characters for fields of type Page, String, Wikitext string, File, URL, Email
$wgCargoDefaultQueryLimit 100 Number of results to show for #cargo_query if no limit is set
$wgCargoMaxQueryLimit 5000 The maximum allowed number of results for #cargo_query
$wgCargoQueryMaxExecutionTime null The maximum amount of time (in milliseconds) that Cargo queries can run before they are stopped (MySQL/MariaDB only)
$wgCargo24HourTime false If true uses 24-hour time for Datetime field types.
$wgCargoDefaultMapService OpenLayers Sets the default map service to Google Maps, if set to googlemaps, to Leaflet if set to leaflet, and to OpenLayers if set to openlayers.
$wgCargoGoogleMapsKey null API key for Google Maps, for the googlemaps display format.
$wgCargoMapClusteringMinimum 80 If the number of map points displayed is greater than the value of $wgCargoMapClusteringMinimum, the map displays the locations in "clusters" instead of individual points, for readability. If set to a very high number, does not display clustering.
$wgCargoDrilldownUseTabs true Displays Special:Drilldown table names as tabs at the top instead of a vertical list at the side.
$wgCargoDrilldownSmallestFontSize -1 If set to a positive number, sets the smallest font size, in pixels, for a tag-cloud-style display of filter values.
$wgCargoDrilldownLargestFontSize -1 If set to a positive number, sets the largest font size, in pixels, for a tag-cloud-style display of filter values.
$wgCargoDrilldownMinValuesForComboBox 40 Sets the minimum number of values before their display is converted to a combo box, instead of individual links.
$wgCargoDrilldownNumRangesForNumbers 5 For fields/filters of type Integer or Float, specifies the number of "buckets" into which values are divided.
$wgCargoMaxVisibleHierarchyDrilldownValues 30 If set to a positive integer, specifies the maximum number of values shown at a time for any hierarchy field (All the top-level values are shown irrespective of this value). The values are hidden beyond a certain depth of the hierarchy such that the count of total visible values is at most this number.
$wgCargoTablesPrioritizeReplacements false If true, all tables having a replacement appear at the top of the Special:CargoTables page, instead displaying them in alphabetical order.
$wgCargoPageDataColumns [] The set of fields to store in the _pageData Cargo table. See Storing page data .
$wgCargoFileDataColumns [] The set of fields to store in the _fileData Cargo table. See Storing file data .
$wgCargoHideNamespaceName [6] Array of namespaces to hide from query results.
$wgCargoLegacyNullLuaFieldsAsEmptyString false Null results to the Lua Cargo query function should return as string rather than nil. This allows you to rollback a breaking change from early 2022. New wikis created after this time should not enable this.
$wgCargoStoreUseTemplateArgsFallback true Enable the behavior that looks for template arguments that match the template's declared table to fill columns.

See also

This extension is included in the following wiki farms/hosts and/or packages:
  1. See Using SQL Functions for defaults.

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