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Available from version 1.18.0 (r86001)
Before creating an HTMLForm object for a page action; allows to change the fields on the form that will be generated.
Define function:
public static function onActionModifyFormFields( $name, array &$fields, Page $article ) { ... }
Attach hook:

In extension.json:

	"Hooks": {
		"ActionModifyFormFields": "MyExtensionHooks::onActionModifyFormFields"

For MediaWiki ≤1.25:

$wgHooks['ActionModifyFormFields'][] = 'MyExtensionHooks::onActionModifyFormFields';
Called from:File(s): actions/FormAction.php

For more information about attaching hooks, see Manual:Hooks.
For examples of extensions using this hook, see Category:ActionModifyFormFields extensions.


  • $name: name of the action
  • &$fields: HTMLForm descriptor array
  • $article: Article object

See also[edit]