如何在cakephp中对自定义查询结果进行分页

Question

我正在开发一个 cakephp 项目，并且是 cakephp 的新手。如标题所述，我需要对 mysql 查询的结果集进行分页，以便在视图中显示它们。

通过这种方式，我可以对“Asin”模型的结果进行分页。

$this->paginate =array('Asin'=>array(
            'fields' => array('sku','fnsku'),
            'conditions' => $marketplace,
            'page' => 1, 'limit' => 20,
            'order' => array('Asin.asin' => 'asc')
        )
$data = $this->paginate('Asin',$criteria);

我还需要一种方法来对以下查询的结果集进行分页。

$resultset = $this->Asin->query("SELECT * FROM products INNER JOIN asins ON products.id=asins.id ORDER BY products.id");

如何添加分页？

Answer 1

CakePHP 使用两种方法来管理分页查询，即 paginate 和 paginateCount，它们分别用于获取页面数据和总记录数。要使分页与您的自定义查询一起工作，我们需要在我们的模型文件中实现上述两个函数，您希望分页与自定义查询一起工作。

public function paginate($conditions, $fields, $order, $limit, $page = 1, $recursive = null, $extra = array()) {    
    $recursive = -1;

    // Mandatory to have
    $this->useTable = false;
    $sql = '';

    $sql .= "Your custom query here just do not include limit portion";

    // Adding LIMIT Clause
    $sql .= (($page - 1) * $limit) . ', ' . $limit;

    $results = $this->query($sql);

    return $results;
}

....

public function paginateCount($conditions = null, $recursive = 0, $extra = array()) {

    $sql = '';

    $sql .= "Your custom query here just do not include limit portion";

    $this->recursive = $recursive;

    $results = $this->query($sql);

    return count($results);
}

然后终于在控制器动作中

// Do not forgot to set this, not sure why
$this->Asin->recursive = 0;

// Setting up paging parameters
$this->paginate = array('Asin'=>array('limit'=>5));

// Getting paginated result based on page #
$this->set('userData', $this->paginate('Asin'));

Answer 2

如果您使用任何关联关系船舶模型，它非常简单 http://book.cakephp.org/2.0/en/models/associations-linking-models-together.html