查询 post_meta 日期而不是 post_date_gmt

Question

我将查询限制为使用 6 个月前的 show post，效果很好。

但我需要它基于 post_meta table 中的日期而不是 'post_date_gmt'。

在我的例子中，我有 meta_keys 被称为 payment_date 并且值当然是像 [=15= 这样的日期] 例如。

$months_ago = 6;
$args = array(
'date_query' => array(
    array(
        'column' => 'post_date_gmt',
        'after'  => $months_ago . ' months ago',
        )
    ),
'numberposts'   => -1
);

Answer 1

在这里查看：https://codex.wordpress.org/Class_Reference/WP_Query#Custom_Field_Parameters

如果滚动示例，您会看到：

Display posts where the custom field key is a set date and the custom field value is now. Displays only posts which date has not passed.

$args = array(
    'post_type'    => 'event',
    'meta_key'     => 'event_date',
    'meta_value'   => date( "Ymd" ), // change to how "event date" is stored
    'meta_compare' => '>',
);
$query = new WP_Query( $args );

在你的情况下，你可以这样写：date( "dmY", strtotime( '6 months ago' ) )

Answer 2

First thing first date_query works on post_date_gmt. If you want to query post from meta fields then you have to use meta_query.

这是一个示例代码：

$months_ago = 6;
$args = [
    //...
    //...
    'posts_per_page' => -1, // Unlimited posts
    //...
    //...
    'meta_query' => [
        'relation' => 'AND',
        [
            'key' => 'payment_date',
            'value' => date('d-m-Y', strtotime($months_ago . ' months ago')), //<-- Converting date into your custom date format
            'compare' => '>', //you can also use <=, >=, <, etc..
            'type' => 'DATE'
        ],
    ]
];

$query = new WP_Query($args);

if ($query->have_posts()) :
    /* Start the Loop */
    while ($query->have_posts()) : $query->the_post();

    //you post

    endwhile;
endif;

上面的代码应该适合你。

查询 post_meta 日期而不是 post_date_gmt

Query post_meta date instead of post_date_gmt

php

arrays

wordpress

date

strtotime