How to sort external fields using Paginator in CakePHP 3

问题

I'm developing an application using cakephp 3.0. I'm wondering if the paginator allows to sort fields coming from other tables which are included in the 'contain' clause. For example I have this statement:

    $this->paginate = [
        'contain' => ['Actors']
    ];

The table 'Actors' contains the field 'description'. Is it possible to sort by the description field of the table Actors?

I tried to specify the field using the dot notation:

$this->Paginator->sort('Actors.description', __('Description'))

as well as to include the model within the option array:

$this->Paginator->sort('description', __('Description'), ['model' => 'Actors'])

In both cases it doesn't seem to work. These two approaches come from cakephp 2.0 where everything works fine (cakephp Paginator -> sort - model option). Apparently in the new documentation there aren't any updates.

回答1:

As José Lorenzo says here Pagination Sort in Cakephp 3.x, Paginator blocks each field which is not available in the primary table. Thus if you need to order by a foreign field it is necessary to specify the full qualified name used by cakephp in the joining table.

In my example I need to specify the following:

$this->paginate = [
    'contain' => ['Actors'],
    'sortWhitelist'=>['Actors.description']
];

and use this expression in the view:

<?= $this->Paginator->sort('Actors.description', __('Description')) ?>

In this way everything works like a charm. If you are not able to identify the right field you may enable the query debug and see which field is used in the query.

来源：https://stackoverflow.com/questions/31916341/how-to-sort-external-fields-using-paginator-in-cakephp-3

标签

cakephp-3.0