Cakephp 2 找到邻居环绕

Cakephp 2 find neighbors wrap around

我正在使用 cakephp 2,幸运的是 find('neighbors') 仍然存在。 然而,我想要的是它环绕。

所以如果我按 id 排序并且我 select 第一个 id,我想将下面的 id 记录作为下一个(有效)但作为以前的最高 id 记录(returns null如果您有第一个 ID)。反之亦然,如果您 select 最高 ID,我希望下一个 ID 最低。[​​=10=]

有没有办法轻松实现?

如果 find('neighbors') 没有 return 下一个或上一个数组,您可以轻松地自己获取下一个或上一个条目。这是一个示例实现:

public function view($id) {
    // Find neighboring products by 'id'
    $neighbors = $this->Product->find('neighbors', array(
        'field' => 'id',
        'value' => $id
    ));

    // If the "prev" neighbor returns null, then assign it to the
    // last item in the model as sorted by id.
    if ($neighbors['prev'] === null)
    {
        $neighbors['prev'] = $this->Product->find('first', array(
            'order' => array('Product.id' => 'desc')
        ));
    // If the "next" neighbor returns null, then assign it to the
    // first item in the model as sorted by id.
    } elseif ($neighbors['next'] === null) {
        $neighbors['next'] = $this->Product->find('first', array(
            'order' => array('Product.id' => 'asc')
        ));
    }

    // Set the data to 'neighbors' for use in the view. 
    $this->set('neighbors', $neighbors);
}