如何使用用户元配置文件字段中的信息创建虚拟页面？

Dave Jesch在他的网站上介绍了一种create virtual pages in WordPress. 正如Dave所说，他创建了一个班级“来完成所有的繁重工作”。我想，出于我的目的，这个类不需要更改，所以我不把它放在这里。此外，Dave创建了一个函数（请参见下文），该函数在需要时调用上述类来创建虚拟页面。我测试了这个方法，它很有效。

我想要的是，使用Dave的类和函数在我的网站上列出一个部门成员列表，其中包含指向他们的虚拟页面的链接以及他们个人资料中的一些内容。页面必须是虚拟的，所以我不必为每个新成员创建一个真正的页面，它必须从他的个人资料中自动（虚拟）创建。

这是我创建和保存一些额外用户配置文件字段的方式：

/* Add Extra Fields to the User Profile */
add_action( \'show_user_profile\', \'extra_user_profile_fields\' );
add_action( \'edit_user_profile\', \'extra_user_profile_fields\' );

function extra_user_profile_fields( $user ) { ?>
   <h3><?php _e("Academic", "blank"); ?></h3>
   <table class="form-table">
      <!-- Teaching position -->
      <tr>
      <th><label for="teaching_position"><?php _e("Teaching position"); ?></label></th>
      <td>
      <input type="text" name="teaching_position" id="teaching_position" value="<?php echo esc_attr( get_the_author_meta( \'teaching_position\', $user->ID ) ); ?>" class="regular-text" /><br />
      <span class="description"><?php _e("Put here your teaching position"); ?></span>
      </td>
      </tr>
   </table>
}

/* Save Extra User Profile Fields */
add_action( \'personal_options_update\', \'save_extra_user_profile_fields\' );
add_action( \'edit_user_profile_update\', \'save_extra_user_profile_fields\' );

function save_extra_user_profile_fields( $user_id ) {
   if ( !current_user_can( \'edit_user\', $user_id ) ) { return false; }
   update_user_meta( $user_id, \'teaching_position\', $_POST[\'teaching_position\'] );
}

这是Daves的函数，它调用他的类来创建虚拟页面：

function dj_create_virtual()
{
    $url = trim(parse_url($_SERVER[\'REQUEST_URI\'], PHP_URL_PATH), \'/\');
    if ($url == \'dave-virtual-page\') {
       $args = array(\'slug\' => \'dave-virtual-page\',
          \'title\' => \'Dave\\\'s Virtual Page\',
          \'content\' => "This can be generated content, or static content<br />
          Whatever you put here will appear on your virtual page.");
       $pg = new DJVirtualPage($args);
    }
}
add_action(\'init\', \'dj_create_virtual\');

这就是我当前显示members list of specific department 在我的网站上（使用短代码）：

add_shortcode( \'list_of_members\', \'members_listing\' );
/* usage: [list_of_members department = \'psychology\'] */

function members_listing( $department ) {

   $members = get_users( array( \'meta_key\' => \'department\', \'meta_value\' => $department ) ); 

   usort($members, create_function(\'$a, $b\', \'return strnatcasecmp($a->last_name, $b->last_name);\'));

   echo \'<div id="memberlist"><ul>\';
   foreach ( $members as $member ) {
      echo \'<li>\';
      echo get_avatar($member->ID);
      /* Bellow I want to put their names in a link to their virtual pages with some information from their profiles */
      echo \'<div class="authname">\' . $member->first_name . \' \' . $member->last_name;
      echo \'</div></li>\';
   }
   echo \'</ul></div>\';
}

现在，我想用Dave的类和函数，把我的（最后一个）members_listing 在虚拟页面的链接中使用成员名称，并从其配置文件中获取一些信息。如何做到这一点？

EDIT

以下是我最后使用的函数（非常感谢@g-m！）：

function dj_create_virtual() {
   $url = trim( parse_url( $_SERVER[\'REQUEST_URI\'], PHP_URL_PATH ), \'/\');
   if ( strpos( $url, \'users/\' ) === 0 ) {
      $user_nicename = str_replace(\'users/\', \'\', $url );
      $user = get_user_by( \'slug\', $user_nicename );
      $user_info = array_map( function( $a ){ return $a[0]; }, get_user_meta( $user->ID ) );
      $args = array(
         \'slug\' => \'users/\' . $user_nicename,
         \'title\' => $user_info[\'first_name\'] . \' \' . $user_info[\'last_name\'],
         \'content\' => get_avatar( $user->ID ));
      if( !empty( $user_info[\'teaching_position\'] ) ) $args[\'content\'] = $args[\'content\'] . \'<h5>Teaching position</h5>\' . $user_info[\'teaching_position\'];
      /* heare are some more user meta profile fields */
      $pg = new DJVirtualPage($args);
   }
}
add_action(\'init\', \'dj_create_virtual\');

以及members_listing 功能：

add_shortcode( \'list_of_members\', \'members_listing\' );
/* usage: [list_of_members department = \'psychology\'] */

function members_listing( $department ) {
   $members = get_users( array( \'meta_key\' => \'department\', \'meta_value\' => $department ) ); 
   usort( $members, create_function( \'$a, $b\', \'return strnatcasecmp($a->last_name, $b->last_name);\' ) );
   echo \'<div id="memberlist"><ul>\';
   foreach ( $members as $member ) {
      echo \'<li>\';
      printf( \'<div class="authname"><a href="%s">%s</a>\', home_url( \'/users/\' . $member->user_nicename ), get_avatar( $member->ID ) );
      printf( \'<div class="authname"><a href="%s">%s</a>\', home_url( \'/users/\' . $member->user_nicename ), $member->display_name );
      if( !empty( $member->teaching_position ) ) { echo \'<br />\' . mb_convert_case( $member->teaching_position, MB_CASE_LOWER, \'UTF-8\' ); };
      echo \'</div></li>\';
   }
   echo \'</ul></div>\';
}

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