我假设商户名称是另一个元字段，而不是该帖子类型的标题？如果是这样的话，这里有一种方法可以组织您的管理编辑。php区域

// Add a column in admin edit.php to display the Merchant post type data you want shown
add_filter(\'manage_merchant_posts_columns\', \'admin_merchant_columns\');
function admin_merchant_columns( $posts_columns ) {
    $posts_columns = array(
        \'cb\' => \'<input type="checkbox" />\', // the checkbox to select the line item
        \'title\' => __( \'Name\' ), // post title
        \'merchant_name\' => __( \'Merchant Name\' ), // where merchant_name is your meta key for that field
        \'_merchant_id\' => __( \'Merchant ID\' ) // merchant id meta key
    );

    return $posts_columns;
}

// Fill the column with the appropriate items
add_action( \'manage_merchant_posts_custom_column\', \'manage_merchant_columns\', 10, 2 );
function manage_merchant_columns( $column, $post_id ) {
    global $post;
    switch( $column ) {
        case \'merchant_name\' :
            $merchant_name = get_post_meta( $post_id, \'merchant_name\'); 
            if ( empty( $merchant_name ) )
                echo ( \'\' );
            else
                print join( $merchant_name, \', \' );

            break;
        case \'_merchant_id\' :
            $_merchant_id = get_post_meta( $post_id, \'_merchant_id\'); 
            if ( empty( $_merchant_id ) )
                echo ( \'\' );
            else
                print join( $_merchant_id, \', \' );

            break;

        default :
            break;
    }
}

// add ability to sort by merchant name
add_filter( \'manage_edit-merchant_sortable_columns\', \'sort_by_merchant_name\' );
function sort_by_merchant_name( $columns ) {
    $columns[\'merchant_name\'] = \'merchant_name\';
    return $columns;
}

add_action( \'load-edit.php\', \'sort_by_merchant_name_load\' );
function sort_by_merchant_name_load() {
    add_filter( \'request\', \'sort_merchant\' ); // where "merchant" is your custom post type slug
}

function sort_merchants( $vars ) {
    if ( isset( $vars[\'post_type\'] ) && \'merchant\' == $vars[\'post_type\'] ) { // where "merchant" is your custom post type slug
        if ( isset( $vars[\'orderby\'] ) && \'merchant_name\' == $vars[\'orderby\'] ) {
            $vars = array_merge(
                $vars,
                array(
                    \'meta_key\' => \'merchant_name\',
                    \'orderby\' => \'meta_value\'
                )
            );
        }
    }
    return $vars;
}

默认情况下，元值和名称在管理区域中不可用。

但您可以启用查询以在循环中使用它，查询如您问题中的示例所示。要添加元值，请使用插件中的以下小片段。

add_filter( \'query_vars\', \'fb_query_vars_admin\' );
/**
 * If needed: Allow meta queries in the admin
 */
function fb_query_vars_admin( $query_vars ) {

    // break off, if not in admin area
    if ( ! is_admin() )
        return $query_vars;

    $query_vars[] = \'meta_key\'; // my key of custom field
    $query_vars[] = \'meta_value\'; // my value of custom field

    return $query_vars;
}

add_filter( \'parse_query\', \'fb_custom_post_sort\' );
function fb_custom_post_sort($query) {

    if ( ! is_admin() )
        return $query;

    global $current_screen;
    if ( isset( $current_screen ) && \'post\' === $current_screen->post_type ) {
        $query->query_vars[\'orderby\']  = \'meta_value\';
        $query->query_vars[\'meta_key\'] = \'_merchant_id\';
        $query->query_vars[\'order\']    = \'ASC\';
    }
}