我有一个自定义的帖子类型，我们已经有几个月的时间了，并通过wordpress管理员用户进行管理。我们决定使用高级自定义字段插件来实现不同级别的“供应商”，并为其提供各种字段。

我在帖子类型中添加了下面的“功能”部分，这样我就可以使用“用户角色编辑器”插件管理功能，但是一旦添加了此代码，没有用户可以上传和附加文件，这就是我得到的错误：“抱歉，不允许您将文件附加到此帖子。”

我可以附加预上载的文件，也可以在删除功能代码时附加文件，但是我无法按角色管理功能。

此外，管理员用户不再能够编辑现有供应商条目。我认为我需要在主题函数文件中设置一些角色，但我不知道是哪些角色。我已经为相关用户角色启用了“上载文件”功能。

供应商注册代码如下：

function vendor() {

    $labels = array(
        \'name\'                  => _x( \'Vendors\', \'Post Type General Name\', \'vendor_text_domain\' ),
        \'singular_name\'         => _x( \'Vendor\', \'Post Type Singular Name\', \'vendor_text_domain\' ),
        \'menu_name\'             => __( \'Vendors\', \'vendor_text_domain\' ),
        \'name_admin_bar\'        => __( \'Vendors\', \'vendor_text_domain\' ),
        \'archives\'              => __( \'Vendor Archives\', \'vendor_text_domain\' ),
        \'parent_item_colon\'     => __( \'Parent Item:\', \'vendor_text_domain\' ),
        \'all_items\'             => __( \'All Vendors\', \'vendor_text_domain\' ),
        \'add_new_item\'          => __( \'Add New Vendor\', \'vendor_text_domain\' ),
        \'add_new\'               => __( \'Add New\', \'vendor_text_domain\' ),
        \'new_item\'              => __( \'New Vendor\', \'vendor_text_domain\' ),
        \'edit_item\'             => __( \'Edit Vendor\', \'vendor_text_domain\' ),
        \'update_item\'           => __( \'Update Vendor\', \'vendor_text_domain\' ),
        \'view_item\'             => __( \'View Vendor\', \'vendor_text_domain\' ),
        \'search_items\'          => __( \'Search Vendor\', \'vendor_text_domain\' ),
        \'not_found\'             => __( \'Not found\', \'vendor_text_domain\' ),
        \'not_found_in_trash\'    => __( \'Not found in Trash\', \'vendor_text_domain\' ),
        \'featured_image\'        => __( \'Featured Image\', \'vendor_text_domain\' ),
        \'set_featured_image\'    => __( \'Set featured image\', \'vendor_text_domain\' ),
        \'remove_featured_image\' => __( \'Remove featured image\', \'vendor_text_domain\' ),
        \'use_featured_image\'    => __( \'Use as featured image\', \'vendor_text_domain\' ),
        \'insert_into_item\'      => __( \'Insert into item\', \'vendor_text_domain\' ),
        \'uploaded_to_this_item\' => __( \'Uploaded to this item\', \'vendor_text_domain\' ),
        \'items_list\'            => __( \'Vendor list\', \'vendor_text_domain\' ),
        \'items_list_navigation\' => __( \'Vendor list navigation\', \'vendor_text_domain\' ),
        \'filter_items_list\'     => __( \'Filter items list\', \'vendor_text_domain\' ),
    );
    $args = array(
        \'label\'                 => __( \'Vendor\', \'vendor_text_domain\' ),
        \'description\'           => __( \'Individual Vendors\', \'vendor_text_domain\' ),
        \'labels\'                => $labels,
        \'supports\'              => array( \'title\', \'editor\', \'thumbnail\', \'revisions\', \'page-attributes\', ),
        \'taxonomies\'            => array( \'post_tag\' ),
        \'hierarchical\'          => false,
        \'public\'                => true,
        \'show_ui\'               => true,
        \'show_in_menu\'          => true,
        \'menu_position\'         => 5,
        \'menu_icon\'             => \'dashicons-store\',
        \'show_in_admin_bar\'     => true,
        \'show_in_nav_menus\'     => true,
        \'can_export\'            => true,
        \'upload_files\'          => true,
        \'has_archive\'           => true,        
        \'exclude_from_search\'   => false,
        \'publicly_queryable\'    => true,
        \'capability_type\'       => \'post\',
        \'capabilities\' => array(
          \'edit_post\'          => \'edit_vendor\', 
          \'read_post\'          => \'read_vendor\', 
          \'delete_post\'        => \'delete_vendor\', 
          \'edit_posts\'         => \'edit_vendors\', 
          \'edit_others_posts\'  => \'edit_others_vendors\', 
          \'publish_posts\'      => \'publish_vendors\',       
          \'read_private_posts\' => \'read_private_vendors\', 
          \'create_posts\'       => \'create_vendor\', 
          \'upload_files\'       => \'upload_vendor_files\'
        ),
    );
    register_post_type( \'vendor\', $args );
}