PurgeAction.php

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<?php
use MediaWiki\HTMLForm\HTMLForm;
use MediaWiki\Permissions\PermissionStatus;
use MediaWiki\Status\Status;
 
class PurgeAction extends FormAction {
 
    private $redirectParams;
 
    public function getName() {
        return 'purge';
    }
 
    public function getDescription() {
        return '';
    }
 
    public function onSubmit( $data ) {
        $authority = $this->getAuthority();
        $page = $this->getWikiPage();
 
        $status = PermissionStatus::newEmpty();
        if ( !$authority->authorizeAction( 'purge', $status ) ) {
            return Status::wrap( $status );
        }
 
        return $page->doPurge();
    }
 
    public function show() {
        $this->setHeaders();
 
        // This will throw exceptions if there's a problem
        $this->checkCanExecute( $this->getUser() );
 
        if ( $this->getRequest()->wasPosted() ) {
            $this->redirectParams = wfArrayToCgi( array_diff_key(
                $this->getRequest()->getQueryValues(),
                [ 'title' => null, 'action' => null ]
            ) );
 
            $result = $this->onSubmit( [] );
            if ( $result === true ) {
                $this->onSuccess();
            } elseif ( $result instanceof Status ) {
                if ( $result->isOK() ) {
                    $this->onSuccess();
                } else {
                    $this->getOutput()->addHTML( $result->getHTML() );
                }
            }
        } else {
            $this->redirectParams = $this->getRequest()->getVal( 'redirectparams', '' );
            $form = $this->getForm();
            if ( $form->show() ) {
                $this->onSuccess();
            }
        }
    }
 
    protected function usesOOUI() {
        return true;
    }
 
    protected function getFormFields() {
        return [
            'intro' => [
                'type' => 'info',
                'raw' => true,
                'default' => $this->msg( 'confirm-purge-top' )->parse()
            ]
        ];
    }
 
    protected function alterForm( HTMLForm $form ) {
        $form->setWrapperLegendMsg( 'confirm-purge-title' );
        $form->setSubmitTextMsg( 'confirm_purge_button' );
    }
 
    protected function postText() {
        return $this->msg( 'confirm-purge-bottom' )->parse();
    }
 
    public function onSuccess() {
        $this->getOutput()->redirect( $this->getTitle()->getFullURL( $this->redirectParams ) );
    }
 
    public function doesWrites() {
        return true;
    }
}