如何在cakephp中对数组日期进行排序

Question

我有 2 桌预订和消息，现在我想一次在收件箱中显示预订请求和消息。

$this->paginate = array(
            'conditions' => $conditions,'limit' =>10,
        'order'=>array('Booking.created'=>'DESC'));
    $bookings = $this->paginate('Booking');

    $this->paginate = array(
            'conditions' => $conditions,'limit' =>10,
        'order'=>array('MessageDetail.created'=>'DESC'));
    $messages = $this->paginate('MessageDetail');

我合并了两个表数据（ array_merge($bookings, $messages); ） 现在我想按日期排序（或任何条件）

Array
(
[0] => Array
    (
        [Booking] => Array
            (
                [id] => 4
                [host_id] => 21
                [place_id] => 10
                [room_id] => 13
                [user_id] => 12
                [message_detail_id] => 16
                [created] => 2013-04-23 14:44:03
                [accept_date] => 
                [cancel_date] => 
            )

    )

[1] => Array
    (
        [Booking] => Array
            (
                [id] => 3
                [host_id] => 21
                [place_id] => 10
                [room_id] => 13
                [user_id] => 12
                [message_detail_id] => 13
                [created] => 2013-04-15 14:10:59
                [accept_date] => 2013-04-15 14:40:47
                [cancel_date] => 
            )

    )


[2] => Array
    (
        [MessageDetail] => Array
            (
                [id] => 17
                [message_id] => 2
                [user_id] => 12
                [sender_id] => 21
                [unread] => 0
                [created] => 2013-04-24 12:11:47
            )

    )

[3] => Array
    (
        [MessageDetail] => Array
            (
                [id] => 15
                [message_id] => 2
                [user_id] => 12
                [sender_id] => 21
                [booking_id] => 3
                [unread] => 0
                [created] => 2013-04-15 15:01:12
            )

    )

  )

提前致谢。

Answer 1

选项#1： 创建名为“BookingAndMessage”的第三个模型。您可以使用模型的 afterSave 方法（在 Booking 和 Message 上）在新模型中创建重复记录。然后，您可以按照正确的排序顺序查询 BookingAndMessage。

选项#2：要解决这个问题，就目前而言，您将需要使用 PHP 的 usort 函数（此处也有解释 PHP 按包含日期的元素对多维数组进行排序）。

<?php

$BookingsAndMessages = array_merge($bookings, $messages);

function date_compare($a, $b)
{   
   $modelKeyA = array_key_exists('Booking',$a) ? 'Booking' : 'MessageDetail';
   $modelKeyB = array_key_exists('Booking',$b) ? 'Booking' : 'MessageDetail';
   $t1 = strtotime($a[$modelKeyA]['created']);
   $t2 = strtotime($b[$modelKeyB]['created']);
   return $t1 - $t2;
}

usort($BookingsAndMessages, 'date_compare');
// Would sort the merged records by `created` date
?>

选项 2 的缺点是，您必须为每个字段（和排序方向）创建规则。

Answer 2

也许您应该先

Union

提出您的疑问，

Order

。

$bookings = $this->Bookings->find('all', [
        'conditions' => $conditions,'limit' =>10,
]);

$messages = $this->find('all', [
        'conditions' => $conditions,'limit' =>10
]);

$data = $bookings->union($messages);
// This works if your first selected field is the one you want to sort. 
$data->epilog('ORDER BY 1 ASC');     

参考： 如何在 CakePHP 3 中修改 UNION 查询？