在 cakephp 中使用分页器实现逐个排序

Question

我正在尝试在 ORDER BY 子句中使用 CASE 运算符。

以下将不起作用（忽略 ORDER BY 子句）：

$this->Paginator->settings = array(
        'order' => array("CASE
                WHEN Transaction.created IS NOT NULL THEN Transaction.created
                WHEN Transaction.created IS NULL THEN Query.created
            END DESC")
    );

（虽然以下会很好：）

$this->Paginator->settings = array(
        'order' => array('Query.created' => 'desc'),
    );

在本机 CakePHP 2.4 查找方法中实现 MySQL CASE 的任何方式？

Answer 1

尝试创建一个虚拟字段（假设您正在分页Transaction）

$this->Transaction->virtualFields['my_created'] = "CASE
                WHEN Transaction.created IS NOT NULL THEN Transaction.created
                WHEN Transaction.created IS NULL THEN Query.created
            END";

$this->Paginator->settings = array(
        'order' => array('Transaction.my_created' => 'desc'),
    );