CakePHP3自定义查找器方法使用包含,并在尝试显示关联的模型字段时不起作用

Question

这是我在DynamicViewsTable.php中的自定义finder方法

public function findAccessibleByUser(Query $query, array $options)
    {
        if (empty($options['User']['id'])) {
            throw new Exception("Current User not set", 1);    
        }

        $query->select(['DynamicViews.id', 'DynamicViews.title', 'UsersAccessDynamicViews.ordinal_ranking'])
              ->contain(['UsersAccessDynamicViews'])
              ->where([
                    'UsersAccessDynamicViews.user_id' => $options['User']['id'],
                ])
              ->order(['UsersAccessDynamicViews.ordinal_ranking' => 'ASC']);
        return $query;
    }

我一直得到的错误是:

Error: SQLSTATE[42S22]: Column not found: 1054 Unknown column 'UsersAccessDynamicViews.ordinal_ranking' in 'field list'

并且错误页面中显示的查询是:

SELECT DynamicViews.id AS `DynamicViews__id`, DynamicViews.title AS `DynamicViews__title`, UsersAccessDynamicViews.ordinal_ranking AS `UsersAccessDynamicViews__ordinal_ranking` FROM dynamic_views DynamicViews WHERE UsersAccessDynamicViews.user_id = :c0 ORDER BY UsersAccessDynamicViews.ordinal_ranking ASC

DynamicViews拥有许多UsersAccessDynamicViews

Answer 1

虽然你可以使用包括任何类型associaition的contain(),配套的东西确实只对工作1:1和n:1协会,即hasOne和belongsTo,因为这些是唯一的关联,其中contain()在相关表格将加入.

出于所有其他目的,您将不得不使用任何一种matching()(需要最近的开发快照才能在结合使用时工作contain(),特别是对于更复杂的组合)

$query
    ->select(['DynamicViews.id', 'DynamicViews.title', 'UsersAccessDynamicViews.ordinal_ranking'])
    ->contain(['UsersAccessDynamicViews'])
    ->matching('UsersAccessDynamicViews', function ($q) use ($options) {
        return $q->where([
            'UsersAccessDynamicViews.user_id' => $options['User']['id']
        ]);
    })
    ->order(['UsersAccessDynamicViews.ordinal_ranking' => 'ASC']);

手动加入相关表:

$query
    ->select(['DynamicViews.id', 'DynamicViews.title', 'UsersAccessDynamicViews.ordinal_ranking'])
    ->contain(['UsersAccessDynamicViews'])
    ->innerJoin('UsersAccessDynamicViews', [
        'UsersAccessDynamicViews.dynamic_view_id = DynamicViews.id',
        'UsersAccessDynamicViews.user_id' => $options['User']['id']
    ])
    ->order(['UsersAccessDynamicViews.ordinal_ranking' => 'ASC']);

或从另一个表查询.

也可以看看

• http://book.cakephp.org/3.0/en/orm/retrieving-data-and-resultsets.html#filtering-by-associated-data
• http://book.cakephp.org/3.0/en/orm/query-builder.html#adding-joins