PHP SiteTree::liveChildren示例

 function testChidrenOfRootAreTopLevelPages()
 {
     $pages = DataObject::get("SiteTree");
     foreach ($pages as $page) {
         $page->publish('Stage', 'Live');
     }
     unset($pages);
     /* If we create a new SiteTree object with ID = 0 */
     $obj = new SiteTree();
     /* Then its children should be the top-level pages */
     $stageChildren = $obj->stageChildren()->toDropDownMap('ID', 'Title');
     $liveChildren = $obj->liveChildren()->toDropDownMap('ID', 'Title');
     $allChildren = $obj->AllChildrenIncludingDeleted()->toDropDownMap('ID', 'Title');
     $this->assertContains('Home', $stageChildren);
     $this->assertContains('Products', $stageChildren);
     $this->assertNotContains('Staff', $stageChildren);
     $this->assertContains('Home', $liveChildren);
     $this->assertContains('Products', $liveChildren);
     $this->assertNotContains('Staff', $liveChildren);
     $this->assertContains('Home', $allChildren);
     $this->assertContains('Products', $allChildren);
     $this->assertNotContains('Staff', $allChildren);
 }