silverstripe-cms/code/model/SiteTreeExtension.php

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<?php
use SilverStripe\ORM\DataExtension;
/**
* Plug-ins for additional functionality in your SiteTree classes.
*
* @package cms
* @subpackage model
*/
abstract class SiteTreeExtension extends DataExtension {
/**
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* Hook called before the page's {@link Versioned::publishSingle()} action is completed
*
* @param SiteTree &$original The current Live SiteTree record prior to publish
*/
public function onBeforePublish(&$original) {
}
/**
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* Hook called after the page's {@link Versioned::publishSingle()} action is completed
*
* @param SiteTree &$original The current Live SiteTree record prior to publish
*/
public function onAfterPublish(&$original) {
}
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/**
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* Hook called before the page's {@link Versioned::doUnpublish()} action is completed
*/
public function onBeforeUnpublish() {
}
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/**
* Hook called after the page's {@link SiteTree::doUnpublish()} action is completed
*/
public function onAfterUnpublish() {
}
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/**
* Hook called to determine if a user may add children to this SiteTree object
*
* @see SiteTree::canAddChildren()
*
* @param Member $member The member to check permission against, or the currently
* logged in user
* @return boolean|null Return false to deny rights, or null to yield to default
*/
public function canAddChildren($member) {
}
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/**
* Hook called to determine if a user may publish this SiteTree object
*
* @see SiteTree::canPublish()
*
* @param Member $member The member to check permission against, or the currently
* logged in user
* @return boolean|null Return false to deny rights, or null to yield to default
*/
public function canPublish($member) {
}
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/**
* Hook called to modify the $base url of this page, with a given $action,
* before {@link SiteTree::RelativeLink()} calls {@link Controller::join_links()}
* on the $base and $action
*
* @param string &$base The URL of this page relative to siteroot, not including
* the action
* @param string|boolean &$action The action or subpage called on this page.
* (Legacy support) If this is true, then do not reduce the 'home' urlsegment
* to an empty link
*/
public function updateRelativeLink(&$base, &$action) {
}
}