Merge branch '5.0' into 5.1

code/Model/SiteTree.php

@@ -2641,10 +2641,12 @@ class SiteTree extends DataObject implements PermissionProvider, i18nEntityProvi
 
         // Need to update pages linking to this one as no longer broken
         foreach ($stageSelf->DependentPages() as $page) {
-            /** @var SiteTree $page */
+            if ($page->hasExtension(Versioned::class)) {
+                /** @var Versioned $page */
                 $page->writeWithoutVersion();
             }
         }
+    }
 
     /**
      * Determine if this page references a parent which is archived, and not available in stage

tests/php/Model/SiteTreeTest.php

@@ -11,6 +11,7 @@ use SilverStripe\CMS\Model\VirtualPage;
 use SilverStripe\CMS\Tests\Controllers\SiteTreeTest_NamespaceMapTestController;
 use SilverStripe\CMS\Tests\CMSEditLinkExtensionTest\BelongsToPage;
 use SilverStripe\CMS\Tests\CMSEditLinkExtensionTest\PageWithChild;
+use SilverStripe\CMS\Tests\Model\SiteTreeBrokenLinksTest\NotPageObject;
 use SilverStripe\CMS\Tests\Page\SiteTreeTest_NamespaceMapTest;
 use SilverStripe\Control\ContentNegotiator;
 use SilverStripe\Control\Controller;
@@ -67,6 +68,7 @@ class SiteTreeTest extends SapphireTest
         SiteTreeTest_DataObject::class,
         PageWithChild::class,
         BelongsToPage::class,
+        NotPageObject::class,
     ];
 
     public function reservedSegmentsProvider()
@@ -2112,4 +2114,23 @@ class SiteTreeTest extends SapphireTest
             ],
         ];
     }
+
+    public function testOnAfterRevertToLive()
+    {
+        // Create new page and publish it
+        $page = SiteTree::create();
+        $page->Content = 'Test content';
+        $id = $page->write();
+        $page->publishRecursive();
+
+        // Add link to non-page object
+        /** @var NotPageObject $obj */
+        $obj = $this->objFromFixture(NotPageObject::class, 'object1');
+        $obj->Content = '<a href="[sitetree_link,id='. $id .']">Link to Page</a>';
+        $obj->write();
+
+        //Test that method doesn't throw exception
+        $this->expectNotToPerformAssertions();
+        $page->onAfterRevertToLive();
+    }
 }

tests/php/Model/SiteTreeTest.yml

@@ -128,3 +128,7 @@ SilverStripe\CMS\Tests\Model\SiteTreeTest_DataObject:
   relations:
     Title: 'Linked DataObject'
     Pages: =>SilverStripe\CMS\Model\SiteTree.home,=>SilverStripe\CMS\Model\SiteTree.about,=>SilverStripe\CMS\Model\SiteTree.staff
+
+SilverStripe\CMS\Tests\Model\SiteTreeBrokenLinksTest\NotPageObject:
+  object1:
+    Content: 'Everything will be ok'