我对使用自定义分类法为Cutom帖子类型设置正确的URL结构感到非常沮丧。

我有一个自定义的帖子类型，叫做courses 使用名为course-type.

1. The URL structure should be:site.com/courses/course-type/course-single-post/.
2. For example: site.com/courses/science/rocket-to-the-moon/

• site.com/courses/ - 返回404site.com/courses/science/ - 显示一个存档页面，其中包含该自定义分类法中正确的所有帖子site.com/courses/science/rocket-to-the-moon/ - 显示了单个自定义帖子类型，该类型也正确，我不知道为什么site.com/courses/ 返回404而不是显示列出所有自定义帖子类型的存档页。。。？

  This is the code that I\'ve used:

  <?php 
  
  /*Courses Custom Post Type*/
  function my_custom_post_courses() {
  $labels = array(
      \'name\'               => _x( \'Courses\', \'post type general name\' ),
      \'singular_name\'      => _x( \'Course\', \'post type singular name\' ),
      \'add_new\'            => _x( \'New course\', \'reis\' ),
      \'add_new_item\'       => __( \'Add new course\' ),
      \'edit_item\'          => __( \'Edit course\' ),
      \'new_item\'           => __( \'New item\' ),
      \'all_items\'          => __( \'All courses\' ),
      \'view_item\'          => __( \'View courses\' ),
      \'search_items\'       => __( \'Search courses\' ),
      \'not_found\'          => __( \'Nothing found  \' ),
      \'not_found_in_trash\' => __( \'Nothing found in the trash\' ),
      \'parent_item_colon\'  => \'\',
      \'menu_name\'          => \'Courses\'
  );
  $args = array(
      \'labels\'        => $labels,
      \'description\'   => \'Enter a new course\',
      \'public\'        => true,
      \'menu_position\' => 5,
      \'supports\'      => array( \'title\', \'editor\', \'thumbnail\', \'excerpt\', \'comments\' ),
      \'has_archive\'   => true,
      \'hierarchical\'  => true,
      \'rewrite\'       => array(\'slug\' => \'courses/%course-type%\',\'with_front\' => false),
      \'query_var\'     => true,
      //\'rewrite\'     => true,
      //\'publicly_queryable\' => false,
  );
  register_post_type( \'courses\', $args );
  }
  add_action( \'init\', \'my_custom_post_courses\' );
  
  /* Courses custom taxonomy */
  function my_taxonomies_course_type() {
  $labels = array(
      \'name\'              => _x( \'Course type\', \'taxonomy general name\' ),
      \'singular_name\'     => _x( \'Course type\', \'taxonomy singular name\' ),
      \'search_items\'      => __( \'Search course types\' ),
      \'all_items\'         => __( \'All course types\' ),
      \'parent_item\'       => __( \'Parent course type\' ),
      \'parent_item_colon\' => __( \'Parent course type:\' ),
      \'edit_item\'         => __( \'Edit course type\' ),
      \'update_item\'       => __( \'Update course type \' ),
      \'add_new_item\'      => __( \'Add new course type\' ),
      \'new_item_name\'     => __( \'New course type\' ),
      \'menu_name\'         => __( \'Course type\' ),
  );
  $args = array(
      \'labels\' => $labels,
      \'hierarchical\'  => true,
      \'public\'        => true,
      \'query_var\'     => \'course-type\',
      \'rewrite\'       =>  array(\'slug\' => \'courses\' ),
      \'_builtin\'      => false,
  );
  register_taxonomy( \'course-type\', \'courses\', $args );
  }
  add_action( \'init\', \'my_taxonomies_course_type\', 0 );
  
  /* Permalink filter Courses */
  add_filter(\'post_link\', \'course_permalink\', 1, 3);
  add_filter(\'post_type_link\', \'course_permalink\', 1, 3);
  
  function course_permalink($permalink, $post_id, $leavename) {
  if (strpos($permalink, \'%course-type%\') === FALSE) return $permalink;
      // Get post
      $post = get_post($post_id);
      if (!$post) return $permalink;
  
      // Get taxonomy terms
      $terms = wp_get_object_terms($post->ID, \'course-type\');
      if (!is_wp_error($terms) && !empty($terms) && is_object($terms[0]))
          $taxonomy_slug = $terms[0]->slug;
      else $taxonomy_slug = \'no-course-type\';
  
  return str_replace(\'%course-type%\', $taxonomy_slug, $permalink);
  }