Manual:Page content models/ja
MediaWiki 1.21 で導入された ContentHandler では、ウィキテキスト以外の新しいコンテンツモデルを追加できるようにします。 これにより、ウィキ ページをウィキテキスト以外のデータで構成したり、任意の方法で表現できるようになります。Markdown、reStructuredText、icalendar、カスタム XML 形式などです。 The display and editing of these content models can be handled in custom ways (e.g. different syntax highlighting, or whole new data-entry forms).
このページでは、拡張機能で新しいコンテンツ モデルを作成する方法を説明します。 It assumes some familiarity with general extension development practices. For a brief summary of the requirements, see the Summary section at the bottom of this page.
A meaningless "Goat" content model will be used for the examples. また、Extension:Examples の一部である DataPages 拡張機能を調べることもできます。
登録
First of all, add the content model's name and handler class to your extension.json:
"ContentHandlers": {
"goat": "MediaWiki\\Extension\\GoatExt\\GoatContentHandler"
}
- The left-hand value here is the name of the content type, it can be any unique string you want, and it lives alongside the five built-in content types: 'wikitext', 'JavaScript', 'CSS', 'plain text', 'JSON'. This value is exposed to users in places such as Special:ChangeContentModel and page information.
- The right-hand value is the fully-qualified name of a class that extends ContentHandler.
This will require two new classes to be created, such as \MediaWiki\Extension\GoatExt\GoatContent
and \MediaWiki\Extension\GoatExt\GoatContentHandler
(make sure their namespace is registered in AutoloadNamespaces).
More information about these classes is given below.
Optional content model constants
The 'goat' string above is the content model's ID (generally called $modelId
in code), and is usually also defined as a constant.
These constants are defined for all built-in content models, and lots of documentation refers to the "CONTENT_MODEL_XXX" constants.
それらを定義していない場合、これは少し混乱するかもしれません。
The definition should be done via the callback item in extension.json
. For example:
extension.json
内:
"callback": "MediaWiki\\Extension\\GoatExt\\Hooks::registrationCallback"
includes/Hooks.php
内:
namespace MediaWiki\Extension\GoatExt;
class Hooks {
public static function registrationCallback() {
// Must match the name used in the 'ContentHandlers' section of extension.json
define( 'CONTENT_MODEL_GOAT', 'goat' );
}
}
You don't have to do it this way, and could just use the string.
ページにコンテンツモデルを割り当てる
Pages can have their content type manually changed, but it's useful to have them default to the correct one. Two common ways of doing this are by namespace, and by file extension.
By namespace: If you want an entire wiki namespace to have a default content model, you can define it as such in extension.json:
"namespaces": [
{
"id": 550,
"constant": "NS_GOAT",
"name": "Goat",
"subpages": false,
"content": true,
"defaultcontentmodel": "goat"
},
{
"id": 551,
"constant": "NS_GOAT_TALK",
"name": "Goat_talk",
"subpages": true,
"content": false,
"defaultcontentmodel": "wikitext"
}
]
Note that published extensions should register the namespace IDs they use (550
and 551
above) on the 拡張機能の既定の名前空間 page.
By file extension: If you want to determine the content type by the addition of a quasi-file-type suffix on the wiki page name, you can use the ContentHandlerDefaultModelFor hook. For example:
namespace MediaWiki\Extension\GoatExt;
class Hooks {
public static function onContentHandlerDefaultModelFor( \Title $title, &$model ) {
// Any page title (in any namespace) ending in '.goat'.
$ext = '.goat';
if ( substr( $title->getText(), -strlen( $ext ) ) === $ext ) {
// This is the constant you defined earlier.
$model = CONTENT_MODEL_GOAT;
// If you change the content model, return false.
return false;
}
// If you don't change it, return true.
return true;
}
}
ContentHandler
The next thing to define is the GoatContentHandler class, which is where we also specify what format this content type will be stored as (in this case, text). ContentHandlers don't know anything about any particular page content, but determine the general structure and storage of the content.
<?php
namespace MediaWiki\Extension\GoatExt;
class GoatContentHandler extends \ContentHandler {
public function __construct( $modelId = 'goat' ) {
parent::__construct( $modelId, [ CONTENT_FORMAT_TEXT ] );
}
public function serializeContent( \Content $content, $format = null ) {
}
public function unserializeContent( $blob, $format = null ) {
}
public function makeEmptyContent() {
return new GoatContent();
}
public function supportsDirectEditing() {
return true;
}
}
Content
The GoatContent
class is the representation of the content's data, and does not know anything about pages, revisions, or how it is stored in the database.
Beside the required seven inherited methods, you can add other public methods are domain-specific; in this case we want to be able to retrieve the goat's name.
<?php
namespace MediaWiki\Extension\GoatExt;
class GoatContent extends \AbstractContent {
public function __construct( $modelId = 'goat' ) {
parent::__construct( $modelId );
}
public function getTextForSearchIndex() {
}
public function getWikitextForTransclusion() {
}
public function getTextForSummary( $maxLength = 250 ) {
}
public function getNativeData() {
}
public function getSize() {
}
public function copy() {
}
public function isCountable( $hasLinks = null ) {
}
public function getName() {
return 'Garry';
}
}
編集フォーム
Now we've got the skeleton set up, we'll want to try editing a Goat.
To do this, we create GoatContentHandler::getActionOverrides()
and specify what actions we want to map to what classes.
To start with, we'll just deal with 'edit' (which corresponds to ?action=edit
in the URL).
public function getActionOverrides() {
return [
'edit' => GoatEditAction::class,
];
}
And we'll create our new GoatEditAction
class, basically the same as the core EditAction
but using our own GoatEditPage
:
<?php
namespace MediaWiki\Extension\GoatExt;
class GoatEditAction extends \EditAction {
public function show() {
$this->useTransactionalTimeLimit();
$editPage = new GoatEditPage( $this->getArticle() );
$editPage->setContextTitle( $this->getTitle() );
$editPage->edit();
}
}
Our new GoatEditPage
class is where the action happens (excuse the pun):
<?php
namespace MediaWiki\Extension\GoatExt;
class GoatEditPage extends \MediaWiki\EditPage\EditPage {
protected function showContentForm() {
$out = $this->context->getOutput();
// Get the data.
$name = $this->getCurrentContent()->getGoatName();
// Create the form.
$nameField = new \OOUI\FieldLayout(
new \OOUI\TextInputWidget( [ 'name' => 'goat_name', 'value' => $name ] ),
[ 'label' => 'Name', 'align' => 'left' ]
);
$out->addHTML( $nameField );
}
}
You should now be able to edit a page and see your form. But when you put data into it, and hit 'preview', you'll see that things are not yet working fully and that you get no output, nor is your submitted text shown again in the form.
So we must override the 'submit' action as well, with a new GoatSubmitAction
class and the addition of 'submit' => GoatSubmitAction::class,
to our GoatContentHandler::getActionOverrides()
method.
Our GoatSubmitAction
class should be the same as that of core, but inheriting from our GoatEditAction
.
表示
A content model is responsible for producing any required output for display. This usually involves working with its data and producing HTML in some way, to add to the parser output.
<?php
namespace MediaWiki\Extension\GoatExt;
class GoatContentHandler extends \AbstractContentHandler {
protected function fillParserOutput(
Title $title, $revId, ParserOptions $options, $generateHtml, ParserOutput &$output
) {
// e.g. $output->setText( $html );
}
}
Display a description/documentation
時には JSON など、そのウィキ ページに特化したコンテンツ様式を供えていて、情報や解説文書を表示したい場合があります。 There are no system messages to display text above such pages (except for MediaWiki:Clearyourcache displayed above only JavaScript and CSS pages). You may want to see phab:T206395 for further details.
Comparing revisions
The GoatDifferenceEngine
class is the representation of the difference between goat contents.
We override the default generateContentDiffBody
method to generate a diff.
<?php
namespace MediaWiki\Extension\GoatExt;
class GoatDifferenceEngine extends \DifferenceEngine {
public function generateContentDiffBody( Content $old, Content $new ) {
}
}
In order to tell MediaWiki to use our GoatDifferenceEngine
, we overwrite the getDiffEngineClass
in our GoatContentHandler
.
<?php
namespace MediaWiki\Extension\GoatExt;
class GoatContentHandler extends \ContentHandler {
public function getDiffEngineClass() {
return GoatDifferenceEngine::class;
}
}
要約
To implement a new content model with a custom editing form, create the following:
<?php
namespace MediaWiki\Extension\GoatExt;
class GoatContent extends \AbstractContent {
public function __construct( $modelId = 'goat' ) {
parent::__construct($modelId);
}
public function getTextForSearchIndex() {}
public function getWikitextForTransclusion() {}
public function getTextForSummary( $maxLength = 250 ) {}
public function getNativeData() {}
public function getSize() {}
public function copy() {}
public function isCountable( $hasLinks = null ) {}
}
<?php
namespace MediaWiki\Extension\GoatExt;
class GoatContentHandler extends \ContentHandler {
public function __construct( $modelId = CONTENT_MODEL_GOAT, $formats = ['text/x-goat'] ) {
parent::__construct($modelId, $formats);
}
protected function getContentClass() {}
public function supportsDirectEditing() {}
public function serializeContent( \Content $content, $format = null ) {}
public function unserializeContent( $blob, $format = null ) {}
public function makeEmptyContent() {}
public function getActionOverrides() {}
protected function fillParserOutput( \Title $title, $revId, \ParserOptions $options, $generateHtml, \ParserOutput &$output) {}
}
Checklist
Action | Example | |
---|---|---|
Define a content model id (al. content type) and content model constant |
goat CONTENT_MODEL_GOAT
| |
Choose your preferred mechanism of applying a content model: | ||
(a) By namespace. Define namespace constants, ids and names given any of them is not already taken |
NS_GOAT (id: 550, name 'Goat')NS_GOAT_TALK (id: 551, name: 'Goat talk')
| |
(b) By extension in pagename | .goat
| |
(c) Other | through 'Page information' interface (&action=info )
| |
extension.json
| ||
ContentHandlers : register a ContentHandler subclass for the new content model
|
"ContentHandlers": {
"goat": "GoatExt\\GoatContentHandler"
}
|
↑ |
callback : name your class method for callbacks, conventionally in your Hooks file
|
"callback": "GoatExt\\Hooks::registrationCallback"
|
↑ |
Hooks : provide a hook method for ContentHandlerDefaultModelFor
|
"Hooks": {
"ContentHandlerDefaultModelFor": [ "GoatExt\\Hooks::onContentHandlerDefaultModelFor" ]
}
| |
namespaces : define namespaces with the appropriate value for defaultcontentmodel .For more options, use ContentHandlerDefaultModelFor hook instead.
|
"namespaces": [
{
"id": 550,
"constant": "NS_GOAT",
"name": "Goat",
"subpages": false,
"content": false,
"defaultcontentmodel": "goat"
},
{
"id": 551,
"constant": "NS_GOAT_TALK",
"name": "Goat_talk",
"subpages": true,
"content": false,
"defaultcontentmodel": "wikitext"
}
]
|
↑ |
AutoloadNamespaces : load Content and ContentHandler subclasses in subdirectory
|
"AutoloadNamespaces": {
"GoatExt\\": "includes/"
}
| |
Or AutoloadClasses : load Content and ContentHandler subclasses explicitly
|
"AutoloadClasses": {
"GoatExt\\Hooks": "includes/Hooks.php",
"GoatExt\\GoatContent": "includes/GoatContent.php",
"GoatExt\\GoatContentHandler": "includes/GoatContentHandler.php"
}
| |
Hooks file | GoatExt\\Hooks
| |
Add method for the callback | public static function registrationCallback() {
// Must match the name used in the 'ContentHandlers' section of extension.json
define( 'CONTENT_MODEL_GOAT', 'goat' );
}
| |
Add method for the ContentHandlerDefaultModelFor hook for wiki pages in the intended namespace
|
public static function onContentHandlerDefaultModelFor( \Title $title, &$model ) {
if ( $title->inNamespace( NS_GOAT ) {
$model = CONTENT_MODEL_GOAT;
return false;
}
return true;
}
|
|
Or add method for the ContentHandlerDefaultModelFor hook for wiki pages with the intended file extension
|
public static function onContentHandlerDefaultModelFor( \Title $title, &$model ) {
$ext = '.goat';
if ( substr( $title->getText(), -strlen( $ext ) ) === $ext ) {
$model = CONTENT_MODEL_GOAT;
return false;
}
return true;
}
|
↑ |
Content and ContentHandler subclasses | ||
Add a Content subclass by extending AbstractContent or one of the subclasses available (e.g. TextContent) | namespace GoatExt;
class GoatContent extends \AbstractContent {
public function __construct( $modelId = 'goat' ) {
parent::__construct( $modelId );
}
public function getTextForSearchIndex() {
}
public function getWikitextForTransclusion() {
}
public function getTextForSummary( $maxLength = 250 ) {
}
public function getNativeData() {
}
public function getSize() {
}
public function copy() {
}
public function isCountable( $hasLinks = null ) {
}
// etc. See documentation for details.
}
|
↑ |
Add a ContentHandler subclass by extending either ContentHandler or one of its subclasses (e.g. TextContentHandler or CodeContentHandler) | namespace GoatExt;
class GoatContentHandler extends \ContentHandler {
public function __construct( $modelId = 'goat' ) {
parent::__construct( $modelId, [ CONTENT_FORMAT_TEXT ] );
}
public function serializeContent( \Content $content, $format = null ) {
}
public function unserializeContent( $blob, $format = null ) {
}
public function makeEmptyContent() {
return new GoatContent();
}
public function supportsDirectEditing() {
return true;
}
protected function fillParserOutput(
Title $title, $revId, ParserOptions $options, $generateHtml, ParserOutput &$output
) {
// e.g. $output->setText( $html );
}
// etc. See documentation for details
}
|
↑ |
Compare revisions | Override ContentHandler::getDiffEngineClass() and DifferenceEngine::generateContentDiffBody() | ↑ |
Modify associated actions such as 'edit' | Override ContentHandler::getActionOverrides() and EditAction::show() | ↑ |
関連項目
- Manual:Hooks/ContentHandlerDefaultModelFor
- Help:ChangeContentModel - for end-user documentation about changing a content model.
- Extension:Examples - for an example of a custom content model (but not yet any custom editing form).