我试图根据不同的分类法列出附件。目前它只适用于基本url（未添加分页）。例如

http://www.example.com/exams/high-school/city-name/subject/math/

首先，我在函数中添加了自定义重写规则。php如下：

function add_rewrite_rules($aRules) {
    $new_rules = array(
    // rule 1
    \'exams/([^/]+)/([^/]+)/subject/([^/]+)/?$\'  => 
    \'index.php?pagename=exams&level=$matches[1]&city=$matches[2]&subject=$matches[3]\',
    // rule 2
    \'exams/([^/]+)/([^/]+)/subject/([^/]+)/page/([0-9]+)/?$\'  => 
    \'index.php?pagename=exams&level=$matches[1]&city=$matches[2]&subject=$matches[3]&page=$matches[4]\'
);

    return $new_rules + $aRules;
}
// hook add_rewrite_rules function into rewrite_rules_array
add_filter(\'rewrite_rules_array\', \'add_rewrite_rules\');

每次我更改功能时，我都会转到wordpress、永久链接并单击save。

其次，我在URL中添加了我正在使用的查询变量（也在functions.php中）：

// represents for example the name of the product category
function add_query_vars($aVars) {
    $aVars[] = "level";    
    $aVars[] = "city"; 
    $aVars[] = "subject"; 
    $aVars[] = "page"; 
    return $aVars;
}
// hook add_query_vars function into query_vars
add_filter(\'query_vars\', \'add_query_vars\');

第三，我创建了一个名为“考试”的页面和一个插件，以获取只有在您正在观看的页面是考试时才能使用的附件：

// Hooks a function to a filter action, \'the_content\' being the action...
add_filter(\'the_content\',\'me_get_listado\');

// Callback function
function me_get_listado($content)
{
    // Checking if on post page.
    if ( is_page(\'exams\') )
    {
            // get the query vars
            if ( get_query_var( \'level\' ) && get_query_var( \'city\' ) && get_query_var( \'subject\' ) )
            {
                // get_post ($args) ... 
            }       
            return  $content; // the new content

        } else {
            // else on blog page / home page etc, just return content as usual.
            return $content;
        }
    }

嗯，这几乎和预期的一样。当我去

http://www.example.com/exams/high-school/city-name/subject/math/

我从“城市名称”中得到了“高中”的“数学”附件。But when I go to:

http://www.example.com/exams/high-school/city-name/subject/math/page/1 

or:

http://www.example.com/exams/high-school/city-name/subject/math/page/2

I\'m redirected to:

http://www.example.com/exams/1 or http://www.example.com/exams/2

所以，什么都没用。

我想知道我添加的重写规则有什么问题？或者如果我干扰了Wordpress的逻辑？

注意：“级别”、“城市”和“主题”是自定义分类法。

exams/high-school/city-name/subject/math/

Pattern:
    (.?.+?)/page/?([0-9]{1,})/?$
Subtitution:
    pagename: exams/high-school/city-name/subject/math
    paged: 1

Pattern:
    (.?.+?)(/[0-9]+)?/?$ 
Subtitution:
    pagename: exams/high-school/city-name/subject/math/page
    page: /1

Pattern: 
    exams/([^/]+)/([^/]+)/subject/([^/]+)/?$    
Subtitution:
    pagename: examns
    level: high-school
    city: city-name
    subject: math
    page: 1

exams/([^/]+)/([^/]+)/subject/([^/]+)/page/?([0-9]{1,})/?$\'  => \'index.php?pagename=exams&level=$matches[1]&city=$matches[2]&subject=$matches[3]&pages=$matches[4]

$args = array(  \'post_type\'         => \'attachment\',
    \'posts_per_page\'    => 2,
    \'paged\'             => ( get_query_var(\'whateverIwant\') ? get_query_var(\'whateverIwant\') : 1 ),
    \'orderby\'           => \'post_title\',
    \'order\'             => \'ASC\',
    \'post_status\'       =>\'published\'
);