WordPress不会转到自定义帖子类型页面

我正在建立一个自定义的Wordpress主题。我在/wp-content/themes/my-theme/wp-includes/post.php中添加了一些自定义帖子类型, 如下所示

// 1. when registering a custom post type set show_in_menu to false, function register_project_custom_type() {
    $labels = array(
        'name'               => _x( 'Projects', 'post type general name', 'your-plugin-textdomain' ), 'singular_name'      => _x( 'Project', 'post type singular name', 'your-plugin-textdomain' ), 'menu_name'          => _x( 'Projects', 'admin menu', 'your-plugin-textdomain' ), 'name_admin_bar'     => _x( 'Project', 'add new on admin bar', 'your-plugin-textdomain' ), 'add_new'            => _x( 'Add New', 'project', 'your-plugin-textdomain' ), 'add_new_item'       => __( 'Add New Project', 'your-plugin-textdomain' ), 'new_item'           => __( 'New Project', 'your-plugin-textdomain' ), 'edit_item'          => __( 'Edit Project', 'your-plugin-textdomain' ), 'view_item'          => __( 'View Project', 'your-plugin-textdomain' ), 'all_items'          => __( 'All Projects', 'your-plugin-textdomain' ), 'search_items'       => __( 'Search Projects', 'your-plugin-textdomain' ), 'parent_item_colon'  => __( 'Parent Projects:', 'your-plugin-textdomain' ), 'not_found'          => __( 'No projects found.', 'your-plugin-textdomain' ), 'not_found_in_trash' => __( 'No projects found in Trash.', 'your-plugin-textdomain' )
    );

    $args = array(
        'labels'             => $labels, 'public'             => true, 'publicly_queryable' => true, 'show_ui'            => true, 'show_in_menu'       => true, 'query_var'          => true, 'rewrite'            => array( 'slug' => 'project' ), 'capability_type'    => 'post', 'has_archive'        => true, 'hierarchical'       => false, 'menu_position'      => null, 'menu_icon' => 'dashicons-nametag', 'supports'           => array( 'title', 'editor', 'author', 'thumbnail', 'excerpt', 'comments' )
    );

    register_post_type( 'project', $args );
}

add_action( 'init', 'register_project_custom_type' );

当我进入网址http：// localhost / my-project / project / uma-thurman /时, 它会退回到我的index.php而不是我的single.php。我已经尝试过single.php, archive.php和single-project.php。似乎没有任何作用。

我更新了我的永久链接, 并基于Wordpress应该自动处理这种事情的层次结构进行了思考。

#1

因此, 对于陷入此问题的其他人, 我不得不切换到另一个主题, 然后再切换回去。由于某种原因, 直到执行此操作后, 才能完全识别自定义帖子类型。