如链接文档中所述,虚拟属性不能用于查找.这是设计的,虚拟属性只存在于实体中,它们是在从数据库中检索数据后用PHP构建的.

因此,让我们暂时忘记虚拟属性,并专注于查询和计算列.

需要通过sortWhITelist指定计算列

就像关联模型的列一样,需要在sortWhitelist选项中指定计算列,以便可用于排序！

Cookbook > Controllers > Components > Pagination > Control which Fields Used for Ordering

通过分页选项

这里有一些选项,例如您可以在分页选项中定义计算列：

$this->paginate = [
    // ...
    'sortWhitelist' => [
        'id','first_name','last_name','full_name',// ...
    ],'fields' => [
        'id','full_name' => $this->Table->query()->func()->concat([
            'first_name' => 'literal','last_name' => 'literal'
        ]),'order' => [
        'full_name' => 'DESC'
    ]
];

定制查找器

另一个更可重复使用的选项是使用自定义查找程序：

$this->paginate = [
    // ...
    'sortWhitelist' => [
        'id','finder' => 'withFullName','order' => [
        'full_name' => 'DESC'
    ]
];

public function findWithFullName(\Cake\ORM\Query $query,array $options)
{
    return $query->select([
        'id','full_name' => $query->func()->concat([
            'first_name' => 'literal',// ...
    ]);
}

> Cookbook > Controllers > Components > Pagination > Using Controller::paginate()
> Cookbook > … ORM > Retrieving Data & Results Sets > Custom Finder Methods

单独的自定义查询

也可以直接将查询对象传递给Controller :: paginate()：

$this->paginate = [
    // ...
    'sortWhitelist' => [
        'id','order' => [
        'full_name' => 'DESC'
    ]
];

$query = $this->Table
    ->find()
    ->select(function (\Cake\ORM\Query $query) {
        return [
            'id','full_name' => $query->func()->concat([
                'first_name' => 'literal','last_name' => 'literal'
            ]),// ...
        ];
    });
$results = $this->paginate($query);