如何通过多个元键排序? [英] How to order by multiple meta keys?

问题描述

我正在使用自定义循环在页面上显示我的事件，我可以使用以下方法在事件开始日期前对其进行良好排序:

I’m using a custom loop to display my events on a page, I get it fine ordering by the event start date using the below:

$args = array( 
    'post_type' => 'event',
    'order' => 'ASC',
    'orderby' => 'meta_value',
    'meta_key' => '_event_start_date');
$loop = new WP_Query( $args );

但是meta_key选项仅允许一个值.如何使用两个值(_event_start_date和_event_start_time)?

But the meta_key option only allows one value. How to use two values (_event_start_date and _event_start_time)?

推荐答案

这是WordPress在4.2中添加的支持:https://make.wordpress.org/core/2015/03/30/query-improvements-in-wp-4-2 -orderby-and-meta_query/

This is something that WordPress added support for in 4.2: https://make.wordpress.org/core/2015/03/30/query-improvements-in-wp-4-2-orderby-and-meta_query/

在您的情况下，您可能需要执行以下操作:

In your case you'll probably want to do something like this:

$args = array(
    'post_type'  => 'event',
    'meta_query' => array(
        'relation' => 'AND',
        'event_start_date_clause' => array(
            'key'     => '_event_start_date',
            'compare' => 'EXISTS',
        ),
        'event_start_time_clause' => array(
            'key'     => '_event_start_time',
            'compare' => 'EXISTS',
        ), 
    ),
    'orderby' => array(
        'event_start_date_clause' => 'ASC',
        'event_start_time_clause' => 'ASC',
    ),
);

$loop = new WP_Query( $args );

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