带有多个meta_values的Wordpress WP_Query，用于meta_key

Question

我正在尝试运行WP_Query，以便使用多个元值搜索数据库中的所有产品。

e.g

• 产品1 - ＆gt; meta_key ['key1'] - ＆gt; meta_value ['value1']
• 产品2 - ＆gt; meta_key ['key1'] - ＆gt; meta_value ['value2']
• 产品3 - ＆gt; meta_key ['key1'] - ＆gt; meta_value ['value3']

所以我想得到所有三种产品。我的论点是

$args = array(
        'post_type' => 'product',
        'posts_per_page' => 2,
        'orderby'    => 'title',
        'order'      => 'ASC',
        'meta_query' => array(
            'relation' => 'OR',
            array(
                'key'     => 'key1',
                'value'   => 'val1',
                'compare' => '='
            ),
            array(
                'key'     => 'key1',
                'value'   => 'val2',
                'compare' => '='
            ),
            array(
                'key'     => 'key1',
                'value'   => 'val3',
                'compare' => '='
            ),
        ),
        'paged' => $paged
        );

问题是没有产品退货。相反，如果只给一个meta_key =＆gt; meta_value对它工作正常

$args = array(
    'post_type' => 'product',
    'posts_per_page' => 2,
    'orderby'    => 'title',
    'order'      => 'ASC',
    'meta_key' => 'key1',
    'meta_value' =>'val1',
    'paged' => $paged
);

Answer 1

您应该使用IN作为compare值，如下所示：

$args = array(
    'post_type' => 'product',
    'posts_per_page' => 2,
    'orderby'    => 'title',
    'order'      => 'ASC',
    'meta_query' => array(
        array(
            'key'     => 'key1',
            'value'   => array('val1','val2','val3'),
            'compare' => 'IN',
        ),
    ),
    'paged' => $paged
);

希望它有所帮助！