在我看来，实现您想要的最好方法是使用自定义字段和与WP查询和Ajax链接的元查询。您可以在此处找到文档：https://codex.wordpress.org/Class_Reference/WP_Query#Custom_Field_Parameters

带有meta\\u查询的WP\\u查询示例：

new WP_Query(array(
    \'post_type\' => array(\'post_links\', \'page\'),
    \'meta_query\' => array(
        \'relation\' => \'AND\',
        \'cost\' => array(
            \'key\' => \'cost\',
            \'value\' => \'500\',
            \'compare\' => \'<=\',
        ),
        \'country\' => array(
            \'key\' => \'country\',
            \'compare\' => \'France\',
        ), 
        \'city\' => array(
            \'key\' => \'city\',
            \'compare\' => \'EXISTS\',
        ), 
    ),
    \'orderby\' => array( 
        \'cost\' => \'ASC\',
        \'city\' => \'ASC\',
    ),
));