Question

经过大量搜索后，我找到了https://github.com/UndefinedOffset/SortableGridField/blob/master/docs/ManyManyExample.md作为使用示例。

但是，实现此代码会导致：

[用户错误]无法运行查询：SELECT DISTINCT MAX（“SortOrder”）FROM“Sidebar”INNER JOIN“TwoColumn_Sidebars”ON“TwoColumn_Sidebars”。“SidebarID”=“Sidebar”。“ID”WHERE（“TwoColumn_Sidebars “。”TwoColumnID“='2'）字段列表中的”SortOrder“列不明确

我正在使用SS3并安装了SortableGridField（虽然在运行dev / build /？flush = all时没有消息表明安装成功。）

关闭开发模式后，CMS无法加载（“服务器错误”），但启用了开发模式后，我收到上述SQL错误。无论如何，它似乎工作得很好，我只需要找出为什么会抛出这个错误。

更新

以下是此错误生成的堆栈跟踪的顶部（页面上有2个[User Error]蓝色标题）：

[User Error] Couldn't run query: SELECT DISTINCT MAX("SortOrder") FROM "Sidebar" INNER JOIN "TwoColumn_Sidebars" ON "TwoColumn_Sidebars"."SidebarID" = "Sidebar"."ID" WHERE ("TwoColumn_Sidebars"."TwoColumnID" = '2') Column 'SortOrder' in field list is ambiguous
Couldn't run query: SELECT DISTINCT MAX("SortOrder") FROM "Sidebar" INNER JOIN "TwoColumn_Sidebars" ON "TwoColumn_Sidebars"."SidebarID" = "Sidebar"."ID" WHERE ("TwoColumn_Sidebars"."TwoColumnID" = '2') Column 'SortOrder' in field list is ambiguous 
MySQLDatabase.php:580
MySQLDatabase->databaseError(Couldn't run query: SELECT DISTINCT MAX("SortOrder") FROM "Sidebar" INNER JOIN "TwoColumn_Sidebars" ON "TwoColumn_Sidebars"."SidebarID" = "Sidebar"."ID" WHERE ("TwoColumn_Sidebars"."TwoColumnID" = '2') | Column 'SortOrder' in field list is ambiguous,256) 
MySQLDatabase.php:132
MySQLDatabase->query(SELECT DISTINCT MAX("SortOrder") FROM "Sidebar" INNER JOIN "TwoColumn_Sidebars" ON "TwoColumn_Sidebars"."SidebarID" = "Sidebar"."ID" WHERE ("TwoColumn_Sidebars"."TwoColumnID" = '2'),256) 
DB.php:200
DB::query(SELECT DISTINCT MAX("SortOrder") FROM "Sidebar" INNER JOIN "TwoColumn_Sidebars" ON "TwoColumn_Sidebars"."SidebarID" = "Sidebar"."ID" WHERE ("TwoColumn_Sidebars"."TwoColumnID" = '2'),256) 
SQLQuery.php:949
SQLQuery->execute() 
DataQuery.php:372
DataQuery->aggregate(MAX("SortOrder")) 
DataQuery.php:338
DataQuery->max(SortOrder) 
DataList.php:676
DataList->max(SortOrder) 
GridFieldSortableRows.php:148
GridFieldSortableRows->fixSortColumn(GridField,ManyManyList) 
GridFieldSortableRows.php:99
GridFieldSortableRows->getManipulatedData(GridField,ManyManyList) 
GridField.php:215
GridField->getManipulatedList() 
GridField.php:255
GridField->FieldHolder() 
...

[User Error] Couldn't run query: SELECT DISTINCT count(DISTINCT "Sidebar"."ID") AS "0" FROM "Sidebar" INNER JOIN "TwoColumn_Sidebars" ON "TwoColumn_Sidebars"."SidebarID" = "Sidebar"."ID" WHERE ("TwoColumn_Sidebars"."TwoColumnID" = '2') AND ("SortOrder"=0) Column 'SortOrder' in where clause is ambiguous

Couldn't run query: SELECT DISTINCT count(DISTINCT "Sidebar"."ID") AS "0" FROM "Sidebar" INNER JOIN "TwoColumn_Sidebars" ON "TwoColumn_Sidebars"."SidebarID" = "Sidebar"."ID" WHERE ("TwoColumn_Sidebars"."TwoColumnID" = '2') AND ("SortOrder"=0) Column 'SortOrder' in where clause is ambiguous 
MySQLDatabase.php:580
MySQLDatabase->databaseError(Couldn't run query: SELECT DISTINCT count(DISTINCT "Sidebar"."ID") AS "0" FROM "Sidebar" INNER JOIN "TwoColumn_Sidebars" ON "TwoColumn_Sidebars"."SidebarID" = "Sidebar"."ID" WHERE ("TwoColumn_Sidebars"."TwoColumnID" = '2') AND ("SortOrder"=0) | Column 'SortOrder' in where clause is ambiguous,256) 
MySQLDatabase.php:132
MySQLDatabase->query(SELECT DISTINCT count(DISTINCT "Sidebar"."ID") AS "0" FROM "Sidebar" INNER JOIN "TwoColumn_Sidebars" ON "TwoColumn_Sidebars"."SidebarID" = "Sidebar"."ID" WHERE ("TwoColumn_Sidebars"."TwoColumnID" = '2') AND ("SortOrder"=0),256) 
DB.php:200
DB::query(SELECT DISTINCT count(DISTINCT "Sidebar"."ID") AS "0" FROM "Sidebar" INNER JOIN "TwoColumn_Sidebars" ON "TwoColumn_Sidebars"."SidebarID" = "Sidebar"."ID" WHERE ("TwoColumn_Sidebars"."TwoColumnID" = '2') AND ("SortOrder"=0),256) 
SQLQuery.php:949
SQLQuery->execute() 
SQLQuery.php:1054
SQLQuery->count(DISTINCT "Sidebar"."ID") 
DataQuery.php:329
DataQuery->count() 
DataList.php:666
DataList->count() 
GridFieldSortableRows.php:150
GridFieldSortableRows->fixSortColumn(GridField,ManyManyList) 
GridFieldSortableRows.php:99
GridFieldSortableRows->getManipulatedData(GridField,ManyManyList) 
GridField.php:215
GridField->getManipulatedList() 
GridField.php:255
GridField->FieldHolder() 
ViewableData.php:366
ViewableData->obj(FieldHolder,,,1) 
...

Answer 1

对于遇到此问题的任何人，可以通过转储DataObject和many_many关系表（即SideBar和TwoColumn_SideBar表）来解决此问题。这两个表都可能有一个SortOrder列，而mysql查询无法找出你想要的那个。

Answer 2

在我遇到SortableGridField问题后，我使用了ajshorts gridfieldextensions。 https://github.com/ajshort/silverstripe-gridfieldextensions

Answer 3

我遇到过这个问题，它是由重复的SortOrder列引起的。

您可以手动删除Sidebar DataObject表上的SortOrder列，并从类中删除该字段。

只需将SortOrder字段保存在关系表上，方法是将其添加到TwoColumn：

private static $many_many_extraFields = array(
        'SideBars' => array(
            'SortOrder' => 'Int'
        )
    );

Answer 4

对于那些在从数据库转储相关表后仍然遇到同样问题的人，请确保您没有设置任何＆＃39; SortOrder＆＃39; ＆$ 39; $ belongs_many_many＆＃39;上的字段关系的类。按照此模块的示例，通过设置＆＃39; $ many_many_extraFields＆＃39;来创建此字段。在＆$ 39; $ many_many＆＃39;类。

<强>更新不同之处在于您创建的关系类型。在模块本身的示例中，您可以看到，对于 has_many关系，第二个对象（TestObject）仍然明确定义了＆＃39; SortOrder＆＃39;字段。

/*** TestPage.php ***/
class TestPage extends Page {
    public static $has_many=array(
        'TestObjects'=>'TestObject'
    );
}


/*** TestObject.php ***/
class TestObject extends DataObject {
    public static $db=array(
        'Title'=>'Text',
        'SortOrder'=>'Int'
    );

    public static $has_one=array(
        'Parent'=>'TestPage'
    );

    public static $default_sort='SortOrder';
}

对于 many_many关系但是，没有为类（TestObject）显式定义此字段，但它是在对象关系上定义的。

/*** TestPage.php ***/
class TestPage extends Page {
    public static $many_many=array(
        'TestObjects'=>'TestObject'
    );

    public static $many_many_extraFields=array(
        'TestObjects'=>array(
            'SortOrder'=>'Int'
        )
    );

    public function TestObjects() {
       return $this->getManyManyComponents('TestObjects')->sort('SortOrder');
    }
}


/*** TestObject.php ***/
class TestObject extends DataObject {
    public static $db=array(
        'Title'=>'Text'
    );

    public static $belongs_many_many=array(
        'TestPages'=>'TestPage'
    );
}

你可以看到＆＃39; TestObject＆＃39;不再定义＆＃39; SortOrder＆＃39;字段，但它现在定义在＆many; $ many_many_extraFields＆＃39; $ many_many_extraFields＆＃39;方法。如果＆＃39; SortOrder＆＃39;字段定义为＆＃39; $ db＆＃39;此外，数据库将有两个＆＃39; SortOrder＆＃39;此关系的字段，导致上述错误。

SortableGridField导致SQL错误

4 个答案: