Question

我有两个对象Schedule和LocationPage。对象Schedule与$has_one的关联LocationPage：

class Schedule extends DataObject {

    private static $db = array(
        'Date' => 'Date',
    );

    private static $has_one = array(
        'Location' => 'LocationPage',
    );
}

和

class LocationPage extends Page {

    private static $db = [
        'Heading' => 'HTMLVarchar(250)',
        'SubHeading' => 'Varchar(250)'
    ];
}

当我尝试按关系字段Title排序时，它会给我一个错误。这是排序代码：

 Schedule::get()->sort(['Location.Title' => 'ASC']);

以下是调用上述代码时出现的排序错误：

[用户错误]未捕获SS_DatabaseException：无法运行查询：SELECT DISTINCT＆＃34; Schedule＆＃34;。＆＃34; ClassName＆＃34;，＆＃34; Schedule＆＃34;。＆＃34 ; LastEdited＆＃34;，＆＃34; Schedule＆＃34;。＆＃34; Created＆＃34;，＆＃34; Schedule＆＃34;。＆＃34; Date＆＃34;，＆＃34; Schedule＆＃34; 。＆＃34; LocationID＆＃34;，＆＃34; Schedule＆＃34;。＆＃34; ID＆＃34;，CASE WHEN＆＃34; Schedule＆＃34;。＆＃34; ClassName＆＃34;那不是空的＆＃34;安排＆＃34;。＆＃34; ClassName＆＃34; ELSE＆＃39; Schedule＆＃39;结束AS＆＃34; RecordClassName＆＃34;，＆＃34; LocationPage＆＃34;。＆＃34; Title＆＃34; AS＆＃34; _SortColumn0＆＃34;来自＆＃34;附表＆＃34; LEFT JOIN＆＃34; LocationPage＆＃34; ON＆＃34; LocationPage＆＃34;。＆＃34; ID＆＃34; =＆＃34; Schedule＆＃34;。＆＃34; LocationID＆＃34; INNER JOIN＆＃34; Page＆＃34; ON＆＃34; LocationPage＆＃34;。＆＃34; ID＆＃34; =＆＃34; Page＆＃34;。＆＃34; ID＆＃34; INNER JOIN＆＃34; SiteTree＆＃34; ON＆＃34; LocationPage＆＃34;。＆＃34; ID＆＃34; =＆＃34; SiteTree＆＃34;。＆＃34; ID＆＃34; ORDER BY＆＃34; _SortColumn0＆＃34; ASC未知专栏＆＃39; LocationPage.Title＆＃39;在＆＃39;字段列表＆＃39;

是什么导致了这个问题？

Answer 1

此问题的解决方法是使has_one关系指向SiteTree而不是LocationPage。

SilverStripe按has_one关系字段排序＆＃34; title＆＃34;

1 个答案: