我有出版物，我只想在永久链接中添加年份和月份。目前，发布年份和月份作为元值添加到帖子中。我已将出版物设置为自定义帖子类型，并为出版物的特定标题创建了分类法。我希望permalink是：

出版物/出版物名称/出版年份/出版月份/职务名称

我只想将发布年份和月份的元值添加到永久链接中。

到目前为止，我已经能够提取发布的年度和月份并将其添加到url，但不幸的是，当我尝试访问帖子时，我一直得到404。我想我在下面的步骤中走错了方向。。。

任何帮助都将不胜感激。

以下是我按照以下顺序执行的步骤：

由于我在url中添加了出版年份和出版月份，我读到我必须让WordPress知道这些自定义查询字符串变量。我添加了以下函数来注册这些自定义变量：

function pubyear_register_rewrite_tag() {  
    add_rewrite_tag( \'%pubyear%\', \'([0-9]{4})\');  
}  

add_action( \'init\', \'pubyear_register_rewrite_tag\');

function pubmonth_register_rewrite_tag() {  
   add_rewrite_tag( \'%pubmonth%\', \'([0-9]{2}\');  
}  

add_action( \'init\', \'pubmonth_register_rewrite_tag\');

向permalink结构中添加了年份和月份：

add_filter(\'post_type_link\', \'pub_term_permalink\', 10, 4);

function pub_term_permalink($permalink, $post, $leavename, $sample)
{
    if ( false !== strpos( $permalink, \'%publication-title%/%pubyear%/%pubmonth%\' ) ) {

     //get the publication-title
     $publicationtype = get_the_terms( $post->ID, \'publication-type\' );

     //get the year of the publication
     $pubyear = date(\'Y\', get_post_meta($post->ID, \'pub_date\', true));

     //get the month of the publication
     $pubmonth = date(\'m\', get_post_meta($post->ID, \'pub_date\', true));

     $rewritecode = array(
         \'%publication-type%\',
         \'%pubyear%\',
         \'%pubmonth%\',
         $leavename? \'\' : \'%postname%\',
     );

     $rewritereplace = array(
         array_pop($publicationtype)->slug,
         $pubyear,
         $pubmonth,
         $post->post_name
     );

     $permalink = str_replace($rewritecode, $rewritereplace, $permalink);    

 }
    return $permalink;
}

3）添加重写规则：

function pub_add_rewrite_rules() {  
    add_rewrite_rule(  \'^([^/]*)/([0-9]{4})/([0-9]{2})/([^/]+)?\', \'publications/index.php?pagename=$matches[3]\', \'top\' );  
}  

add_action( \'init\', \'pub_add_rewrite_rules\' );

4）确保已注册自定义帖子类型，并包括此重写数组：

\'rewrite\' => array
    (
            \'slug\' => \'publications/%publication-type%/%pubyear%/%pubmonth%\',
    \'with_front\' => false
         ),

add_action(\'init\', \'pub_rewrite_rules\');

function pub_rewrite_rules()
{
    global $wp_rewrite;

    $wp_rewrite->add_rewrite_tag( \'%pubyear%\', \'([0-9]{4})\', \'pubyear=\');
    $wp_rewrite->add_rewrite_tag( \'%pubmonth%\', \'([0-9]{2})\', \'pubmonth=\');
}

 function pub_permalink($permalink, $post, $leavename)
 {
     if ( false !== strpos( $permalink, \'%publication-type%/%pubyear%/%pubmonth%\' ) ) {

         $publicationtype = get_the_terms($post->ID, \'publication-type\');
         $pubyear = date(\'Y\', get_post_meta($post->ID, \'publication_date\', true));
         $pubmonth = date(\'m\', get_post_meta($post->ID, \'publication_date\', true));

         $rewritecode = array(
               \'%publication-type%\',
               \'%pubyear%\',
               \'%pubmonth%\',
               $leavename? \'\' : \'%postname%\',
         );

         $rewritereplace = array(
               array_pop($publicationtype)->slug,
               $pubyear,
               $pubmonth,
               $post->post_name
         );

         $permalink = str_replace($rewritecode, $rewritereplace, $permalink);    
    }
    return $permalink;
}

 \'slug\' => \'publications/%publication-type%/%pubyear%/%pubmonth%\',

add_filter(\'post_link\', \'pub_permalink\', 10, 3);