如何使用主where子句条件设置带有OR条件的meta_query

Question

我创建了一个名为 的元键_custom_product_catalog_number，我想添加功能，以便人们可以使用该目录号搜索产品。

我在functions.php中添加了以下代码

add_action('pre_get_posts', 'modify_post_search');
function modify_post_search($query) 
{
if($query->is_search)
{
$s="c2500";//$s=$_GET['s'];
    $query->set('meta_query', [
        [
            'key' => '_custom_product_catalog_number',
            'value' => $s,
            'compare' => '='
        ]
    ]);
}
}

add_filter('pre_get_posts', 'filter_search');

生成的查询：

SELECT SQL_CALC_FOUND_ROWS  dsl_posts.ID 
FROM dsl_posts  
   INNER JOIN dsl_postmeta ON ( dsl_posts.ID = dsl_postmeta.post_id )
WHERE 1=1  
AND ( dsl_posts.ID NOT IN (
      SELECT object_id FROM dsl_term_relationships WHERE term_taxonomy_id IN (6) 
) ) 
AND (((dsl_posts.post_title LIKE '%c2500%') OR (dsl_posts.post_excerpt LIKE '%c2500%') OR (dsl_posts.post_content LIKE '%c2500%')))  

AND ( /* replace AND with OR */
  ( dsl_postmeta.meta_key = '_custom_product_catalog_number' AND dsl_postmeta.meta_value = 'c2500' ) ) 

AND dsl_posts.post_type = 'product' AND (dsl_posts.post_status = 'publish' OR dsl_posts.post_status = 'wc-want-be-returned' OR dsl_posts.post_status = 'private') 
GROUP BY dsl_posts.ID 
ORDER BY dsl_posts.post_title LIKE '%c2500%' DESC, dsl_posts.post_date DESC LIMIT 0, 12

我如何用before替换AND关键字，以便我可以获得有条件的结果。OR( dsl_postmeta.meta_key = '_custom_product_catalog_number'OR

Answer 1

请尝试这个，

 add_action('pre_get_posts', 'modify_post_search');
    function modify_post_search($query) 
    {
        $query->set( 'meta_query',  array(
       'relation' => 'OR', // Optional, defaults to "AND"
        array(
          'key'     => '_my_custom_key',
          'value'   => 'Value I am looking for',
          'compare' => '='
       ),
      array(
        'relation' => 'AND',
        array(
            'key'     => '_my_custom_key_2',
            'value'   => 'Value I am looking for 2',
            'compare' => '='
        ),
        array(
            'key'     => '_my_custom_key_3',
            'value'   => 'Value I am looking for 3',
            'compare' => '='
        )
    )
);

    return $query;
    }

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