我必须遗漏一些简单的...我正在使用这里的文档:http://api.silverstripe.org/en/master/class-SilverStripe.Forms.TreeDropdownField.html我认为我正确地做了这个,但是得到错误:SourceObject必须是DataObject的子类
这是我的代码
<?php
use SilverStripe\CMS\Model\SiteTree;
use SilverStripe\Forms\TreeDropdownField;
use SilverStripe\Forms\TextField;
use SilverStripe\Forms\TextareaField;
class HomePage extends Page {
private static $db = array(
'CTA' => 'Varchar(255)',
'LinkText' => 'Varchar(50)'
);
private static $has_one = array(
'PageLink' => 'SiteTree'
);
public function getCMSFields() {
$fields = parent::getCMSFields();
$fields->addFieldToTab('Root.Main', TextareaField::create('CTA', 'Call To Action Text'), 'Content');
$fields->addFieldToTab('Root.Main', TreeDropdownField::create('PageLinkID', 'What page does this call-to-action link to?', 'SiteTree'), 'Content');
$fields->addFieldToTab('Root.Main', TextField::create('PageLinkText', 'Call To Action Link Text (Example: "Learn more")'), 'Content');
$fields->removeByName('Content');
return $fields;
}
}
答案 0 :(得分:3)
您需要使用完全限定的类名:
$fields->addFieldToTab(
'Root.Main',
TreeDropdownField::create(
'PageLinkID',
'What page does this call-to-action link to?',
SiteTree::class
),
'Content'
);
这也适用于你的模特关系:
private static $has_one = array(
'PageLink' => SiteTree::class,
);