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我在 Wordpress 中有一个搜索表单，可以搜索自定义帖子类型中的所有帖子标题、内容和自定义字段。但它不会按作者搜索。我希望搜索关键字与显示名称匹配以继续并输出该作者的任何帖子。

这是我当前的代码（其中的 display_name 部分显然是错误的，但说明了我想要完成的工作）。除了按 display_name 部分获取帖子外，一切正常。任何帮助或指导表示赞赏:)

// Code originally modified 
// from http://www.deluxeblogtips.com/2012/04/search-all-custom-fields.html

global $wpdb;
// Gets the ?crs= search from the submitted form
$keyword = sanitize_text_field( $_GET['crs'] );
$keyword = '%' . like_escape( $keyword ) . '%'; 

// Search in all custom fields
$post_ids_meta = $wpdb->get_col( $wpdb->prepare( "
    SELECT DISTINCT post_id FROM {$wpdb->postmeta}
    WHERE meta_value LIKE '%s'
", $keyword ) );

// Search in post_title and post_content
$post_ids_post = $wpdb->get_col( $wpdb->prepare( "
    SELECT DISTINCT ID FROM {$wpdb->posts}
    WHERE post_title LIKE '%s'
    OR post_content LIKE '%s'
", $keyword, $keyword ) );

// Search in User Table for Display Name
// This is where I'm not sure what how to get the posts by display_name
$post_ids_user = $wpdb->get_col( $wpdb->prepare( "
    SELECT DISTINCT post_id FROM {$wpdb->users}
    WHERE display_name LIKE '%s'
", $keyword ) );

$post_ids = array_merge( $post_ids_meta, $post_ids_post, $post_ids_user );

// Query arguments for WP_Query
$args = array(
    'post_type'   => 'courses',
    'post_status' => 'publish',
    'limit' => '',
    'post__in'    => $post_ids,
);
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1 回答 1

3

我想建议的一件事不是运行多个查询，而是加入您的表并立即解决

SELECT DISTINCT post_id FROM {$wpdb->users} WHERE display_name LIKE '%s' 这是错误的查询，您无法从用户表中获取帖子 ID，帖子和用户的关系在帖子表中维护，每个帖子都包含用户 IDpost_author柱子

试试这个

$post_ids = $wpdb->get_col( $wpdb->prepare( "
    SELECT p.ID FROM $wpdb->posts p
INNER JOIN $wpdb->users u ON (p.`post_author` = u.`ID`)
LEFT JOIN $wpdb->postmeta m ON (p.`ID`= m.`post_id`)
WHERE ( u.display_name LIKE '%s' OR p.post_title LIKE '%s' 
OR p.post_content LIKE '%s' OR m.meta_value LIKE '%s')
GROUP BY p.`ID`
", $keyword ) );

//print_r($post_ids); //you will get the post ids
$post_ids=array_values(array_unique($post_ids));
于 2013-09-23T19:06:39.493 回答