Silverstripe创建相关数据对象后的元素问题

Question

事实：SS 4.0.1，dnadesign / silverstripe-elemental 2.x-dev，php 7.1和Zauberfisches Vagrant box Jessy Version 3

我制作了一个元素元素，它是单个元素的持有者：

namespace R12page\Elements;

use DNADesign\Elemental\Models\BaseElement;
use SilverStripe\Forms\GridField\GridField;
use SilverStripe\Forms\GridField\GridFieldConfig_RecordEditor;
use SilverStripe\Versioned\Versioned;
use UndefinedOffset\SortableGridField\Forms\GridFieldSortableRows;


class ImageRasterElement extends BaseElement
{

private static $singular_name = 'Image Raster Element';

private static $plural_name = 'Images Raster Elements';

private static $description = 'Generates an Image Raster for multiple single Elements';

private static $table_name = 'ImageRasterElement';

private static $has_many = [
    'SingleElements' => SingleElement::class
];


private static $extensions = [
    Versioned::class . '.stagedversioned',
];

public function getType()
{
    return 'ImageRasterElement';
}

public function getCMSFields()
{
    $fields = parent::getCMSFields();

    $singleElements = $this->SingleElements();
    $singleElementGridConfig = GridFieldConfig_RecordEditor::create();
    $singleElementGridConfig->addComponent(new GridFieldSortableRows('SortOrder'));
    $singleElementGrid = GridField::create('SingleElements', 'Single Elements of this Page', $singleElements, $singleElementGridConfig);

    $fields->addFieldsToTab('Root.Main',  $singleElementGrid);

    return $fields;
}
}

这个元素有很多单个元素：它们看起来像：

 namespace R12page\Elements;


 use R12page\Model\News;
 use R12page\Model\People;
 use R12page\Model\References;
 use SilverStripe\ORM\DataObject;
 use SilverStripe\Versioned\Versioned;

class SingleElement extends DataObject
{
private static $table_name = 'SingleElement';


private static $db = [
    'Reference' => 'Boolean',
    'People' => 'Boolean',
    'News' => 'Boolean',
    'SortOrder' => 'Int'
];

private static $has_one = [
    'News' => News::class,
    'People' => People::class,
    'Reference' => References::class,
    'ImageRasterElements' => ImageRasterElement::class
];

private static $summary_fields = [
    'News.Headline' => 'News',
    'People.Name' => 'People',
    'Reference.Headline' => 'Reference'
];

private static $extensions = [
    Versioned::class . '.stagedversioned',
];


}

每个单个元素都有一个数据对象的has_one。看起来像：

 namespace R12page\Model;

 use R12page\Elements\SingleElement;
 use SilverStripe\ORM\DataObject;
 use SilverStripe\Versioned\Versioned;

class News extends DataObject
{
private static $table_name = 'News';

private static $db = [
    'Headline' => 'Varchar',
    'SubHeadline' => 'Varchar',
    'Date' => 'Date',
    'DatePublished' => 'Date',
    'Content' => 'HTMLText',
    'IsActiv' => 'Boolean',
    'DisplayOnHomePage' => 'Boolean'
];

private static $has_one = [
    'Mobile' => Size::class,
    'Screen' => Size::Class
];

private static $has_many = [
    'SingleElements' => SingleElement::class
];

private static $owns = [
    'SingleElements'
];

private static $summary_fields = [
    'Headline' => 'Headline',
    'Mobile.Title' => 'Mobile',
    'Screen.Title' => 'Screen'
];

private static $extensions = [
    Versioned::class . '.stagedversioned',
];

}

到目前为止一切顺利。这就是管理区域中的样子。

奇怪的是，如果我添加一个元素尝试创建它我得到这个：

当我刷新页面时，我可以看到页面的内容，我可以保存它没有任何问题。如果使用php_debug一切看起来不错。我也不知道控制台中的错误信息与我遇到的问题有关。我只是得到警告：

但我认为警告应该不是问题。确切地说，我得到一个错误，因为没有加载字体。

请帮我调试一下。我尝试过这一天的工作。我无法确定我遇到的问题。

这是我回复的回应：

对我而言看起来还不错。

这是来自浏览器networktap的响应：

我可以确认的观点：

元素适用于全新安装。

如果我切换到实时模式，则没有任何变化。

如果我尝试使用与elemental一起提供的内容元素，则它具有相同的行为。