API Replace Extension subclasses

docs/en/technical.md

@@ -9,7 +9,7 @@ page to a particular subsite.
 
 The subsite module adds functionality to the admin section of the site to allow you to create new subsites and copy 
 pages between the main site and any subsites.
-Subsites makes use of a DataExtension called SiteTreeSubsites to add support for subsites to the SiteTree,
+Subsites makes use of an Extension called SiteTreeSubsites to add support for subsites to the SiteTree,
 which extends various methods to add Subsite functionality some of the methods are listed below
 
 ### augmentSQL

src/Extensions/BaseElementSubsites.php

@@ -4,14 +4,14 @@
 
 use DNADesign\Elemental\Models\BaseElement;
 use SilverStripe\Control\HTTP;
-use SilverStripe\ORM\DataExtension;
+use SilverStripe\Core\Extension;
 
 /**
  * Extension for the BaseElement object to add subsites support for CMS previews
  *
- * @extends DataExtension<BaseElement>
+ * @extends Extension<BaseElement>
  */
-class BaseElementSubsites extends DataExtension
+class BaseElementSubsites extends Extension
 {
     /**
      * Set SubsiteID to avoid errors when a page doesn't exist on the CMS domain.

src/Extensions/ErrorPageSubsite.php

@@ -6,14 +6,14 @@
 use SilverStripe\CMS\Model\SiteTree;
 use SilverStripe\Core\Config\Config;
 use SilverStripe\ErrorPage\ErrorPage;
-use SilverStripe\ORM\DataExtension;
+use SilverStripe\Core\Extension;
 use SilverStripe\ORM\DataObject;
 use SilverStripe\Subsites\Model\Subsite;
 
 /**
- * @extends DataExtension<ErrorPage>
+ * @extends Extension<ErrorPage>
  */
-class ErrorPageSubsite extends DataExtension
+class ErrorPageSubsite extends Extension
 {
     /**
      * Alter file path to generated a static (static) error page file to handle error page template

src/Extensions/FileSubsites.php

@@ -3,7 +3,7 @@
 namespace SilverStripe\Subsites\Extensions;
 
 use SilverStripe\Assets\File;
-use SilverStripe\ORM\DataExtension;
+use SilverStripe\Core\Extension;
 use SilverStripe\ORM\DataQuery;
 use SilverStripe\ORM\Queries\SQLSelect;
 use SilverStripe\Security\Permission;
@@ -15,9 +15,9 @@
  *
  * @method Subsite Subsite()
  *
- * @extends DataExtension<File>
+ * @extends Extension<File>
  */
-class FileSubsites extends DataExtension
+class FileSubsites extends Extension
 {
     /**
      * If this is set to true, all folders created will be default be considered 'global', unless set otherwise

src/Extensions/GroupSubsites.php

@@ -8,7 +8,7 @@
 use SilverStripe\Forms\FieldList;
 use SilverStripe\Forms\OptionsetField;
 use SilverStripe\Forms\ReadonlyField;
-use SilverStripe\ORM\DataExtension;
+use SilverStripe\Core\Extension;
 use SilverStripe\ORM\DataObject;
 use SilverStripe\ORM\DataQuery;
 use SilverStripe\ORM\DB;
@@ -24,9 +24,9 @@
  *
  * @method ManyManyList<Subsite> Subsites()
  *
- * @extends DataExtension<Group&static>
+ * @extends Extension<Group&static>
  */
-class GroupSubsites extends DataExtension implements PermissionProvider
+class GroupSubsites extends Extension implements PermissionProvider
 {
     private static $db = [
         'AccessAllSubsites' => 'Boolean'

src/Extensions/LeftAndMainSubsites.php

@@ -6,13 +6,13 @@
 use SilverStripe\Admin\CMSMenu;
 use SilverStripe\Admin\CMSProfileController;
 use SilverStripe\Admin\LeftAndMain;
-use SilverStripe\Admin\LeftAndMainExtension;
 use SilverStripe\CMS\Controllers\CMSPagesController;
 use SilverStripe\CMS\Model\SiteTree;
 use SilverStripe\CMS\Controllers\CMSPageEditController;
 use SilverStripe\Control\Controller;
 use SilverStripe\Core\Config\Config;
 use SilverStripe\Core\Convert;
+use SilverStripe\Core\Extension;
 use SilverStripe\Forms\HiddenField;
 use SilverStripe\ORM\ArrayList;
 use SilverStripe\ORM\DataObject;
@@ -27,10 +27,8 @@
 
 /**
  * Decorator designed to add subsites support to LeftAndMain
- *
- * @extends LeftAndMainExtension<LeftAndMain>
  */
-class LeftAndMainSubsites extends LeftAndMainExtension
+class LeftAndMainSubsites extends Extension
 {
     private static $allowed_actions = ['CopyToSubsite'];
 

src/Extensions/SiteConfigSubsites.php

@@ -4,7 +4,7 @@
 
 use SilverStripe\Forms\FieldList;
 use SilverStripe\Forms\HiddenField;
-use SilverStripe\ORM\DataExtension;
+use SilverStripe\Core\Extension;
 use SilverStripe\ORM\DataQuery;
 use SilverStripe\ORM\Queries\SQLSelect;
 use SilverStripe\SiteConfig\SiteConfig;
@@ -16,9 +16,9 @@
  *
  * @method Subsite Subsite()
  *
- * @extends DataExtension<SiteConfig&static>
+ * @extends Extension<SiteConfig&static>
  */
-class SiteConfigSubsites extends DataExtension
+class SiteConfigSubsites extends Extension
 {
     private static $has_one = [
         'Subsite' => Subsite::class, // The subsite that this page belongs to

src/Extensions/SiteTreeSubsites.php

@@ -16,7 +16,7 @@
 use SilverStripe\Forms\ToggleCompositeField;
 use SilverStripe\i18n\i18n;
 use SilverStripe\ORM\ArrayList;
-use SilverStripe\ORM\DataExtension;
+use SilverStripe\Core\Extension;
 use SilverStripe\ORM\DataObject;
 use SilverStripe\ORM\DataQuery;
 use SilverStripe\ORM\ManyManyList;
@@ -37,9 +37,9 @@
  * @method ManyManyList<SiteTree> CrossSubsiteLinkTracking()
  * @method Subsite Subsite()
  *
- * @extends DataExtension<SiteTree&static>
+ * @extends Extension<SiteTree&static>
  */
-class SiteTreeSubsites extends DataExtension
+class SiteTreeSubsites extends Extension
 {
     private static $has_one = [
         'Subsite' => Subsite::class, // The subsite that this page belongs to
@@ -112,8 +112,6 @@ protected function onBeforeWrite()
         if (!$this->owner->ID && !$this->owner->SubsiteID) {
             $this->owner->SubsiteID = SubsiteState::singleton()->getSubsiteId();
         }
-
-        parent::onBeforeWrite();
     }
 
     protected function updateCMSFields(FieldList $fields)