Php WordPress自定义帖子类型无法访问子页面

下面的内容成功地让我在我的WordPress网站上使用程序和程序常见问题解答，作为自定义帖子类型，但我正在努力解决页面的永久链接问题

当我创建一个新的FAQ页面时，我将父级设置为程序这很好，但这是一个永久链接，我似乎无法开始工作

例如，如果一个程序名为Football，我将访问

domain.com/programs/Football

，然后我将创建一个名为Football的程序FAQ，并从该程序中将父级设置为Football，FAQ的永久链接将变为

domain.com/programme\u常见问题解答/football/football

当我试图访问该页面时，它显示为404未找到。如果我从FAQ页面中删除父选项，则永久链接将变为

domain.com/program\u FAQ/football

，并且可以正常工作

理想情况下，我希望在节目常见问题解答中制作的页面最终成为

domain.com/programmes/football/FAQ

add_action( 'init', 'register_cpt_programmes' );
add_action( 'init', 'register_cpt_programmes_faq' );

function register_cpt_programmes() {

    $labels = array( 
        'name'               => __( 'Programmes', 'text_domain' ),
        'singular_name'      => __( 'single programme name', 'text_domain' ),
        'add_new'            => _x( 'Add Programme', '${4:Name}', 'text_domain' ),
        'add_new_item'       => __( 'Add Programme', 'text_domain}' ),
        'edit_item'          => __( 'Edit this Programme', 'text_domain' ),
        'new_item'           => __( 'New Programme', 'text_domain' ),
        'view_item'          => __( 'View Programme', 'text_domain' ),
        'search_items'       => __( 'Search Programmes', 'text_domain' ),
        'not_found'          => __( 'No Programmes found', 'text_domain' ),
        'not_found_in_trash' => __( 'No Programmes found in Trash', 'text_domain' ),
        'parent_item_colon'  => __( 'Parent single post type name:', 'text_domain' ),
        'menu_name'          => __( 'Programmes', 'text_domain' ),
    );

    $args = array( 
        'labels'              => $labels,
        'hierarchical'        => true,
        'description'         => 'description',
        //'taxonomies'          => array( 'category' ),
        'public'              => true,
        'show_ui'             => true,
        'show_in_menu'        => true,
        'menu_position'       => 5,
        //'menu_icon'         => '',
        'show_in_nav_menus'   => true,
        'publicly_queryable'  => true,
        'exclude_from_search' => false,
        'has_archive'         => true,
        'query_var'           => true,
        'can_export'          => true,
        'rewrite'             => true,
        'capability_type'     => 'page', 
        'supports'            => array( 
            'title', 'editor', 'author', 'page-attributes', 'thumbnail', 'excerpt', 'custom-fields', 'revisions', 'comments'
        ),
        'rewrite' => array(
            'with_front' => false,
            'slug'       => 'programmes'
        )
    );

    register_post_type( 'programmes', $args );
}

function register_cpt_programmes_faq() {

    $labels = array( 
        'name'               => __( 'Programme FAQ', 'text_domain' ),
        'singular_name'      => __( 'single programme faq', 'text_domain' ),
        'add_new'            => _x( 'Add Programme FAQ', '${4:Name}', 'text_domain' ),
        'add_new_item'       => __( 'Add Programme FAQ', 'text_domain}' ),
        'edit_item'          => __( 'Edit this Programme FAQ', 'text_domain' ),
        'new_item'           => __( 'New Programme FAQ', 'text_domain' ),
        'view_item'          => __( 'View Programme FAQ', 'text_domain' ),
        'search_items'       => __( 'Search Programme FAQ', 'text_domain' ),
        'not_found'          => __( 'No Programme FAQs found', 'text_domain' ),
        'not_found_in_trash' => __( 'No Programmes FAQs found in Trash', 'text_domain' ),
        'parent_item_colon'  => __( 'Parent single post type name:', 'text_domain' ),
        'menu_name'          => __( 'Programme FAQ', 'text_domain' ),
    );

    $args = array( 
        'labels'              => $labels,
        'hierarchical'        => true,
        'description'         => 'description',
        //'taxonomies'          => array( 'category' ),
        'public'              => true,
        'show_ui'             => true,
        'show_in_menu'        => true,
        'menu_position'       => 5,
        //'menu_icon'         => '',
        'show_in_nav_menus'   => true,
        'publicly_queryable'  => true,
        'exclude_from_search' => false,
        'has_archive'         => true,
        'query_var'           => true,
        'can_export'          => true,
        'rewrite'             => true,
        'capability_type'     => 'page', 
        'supports'            => array( 
            'title', 'editor', 'author', 'page-attributes', 'thumbnail', 'excerpt', 'custom-fields', 'revisions', 'comments'
        ),
        'rewrite' => array(
            'with_front' => false,
            'slug'       => 'programme_faq'
        )
    );

    register_post_type( 'programme_faq', $args );
}
add_action('admin_menu', function() {
    remove_meta_box('pageparentdiv', 'programme_faq', 'normal');
});

add_action('add_meta_boxes', function() {
    add_meta_box('programmes-parent', 'Programmes', 'programmes_attributes_meta_box', 'programme_faq', 'side', 'high');
});

function programmes_attributes_meta_box($post) {
    $post_type_object = get_post_type_object($post->post_type);
    if ( $post_type_object->hierarchical ) {
        $pages = wp_dropdown_pages(array('post_type' => 'programmes', 'selected' => $post->post_parent, 'name' => 'parent_id', 'show_option_none' => __('(no parent)'), 'sort_column'=> 'menu_order, post_title', 'echo' => 0));
        if ( ! empty($pages) ) {
            echo $pages;
        } // end empty pages check
    } // end hierarchical check.
}

---

这是我第一次回答堆栈溢出问题。请原谅格式和拼写问题。

摘要：

// 1a. register the Programmes post type
function register_cpt_programmes()
{
    $labels = array(
        'name'               => __('Programmes', 'text_domain'),
        'singular_name'      => __('single programme name', 'text_domain'),
        'add_new'            => _x('Add Programme', '${4:Name}', 'text_domain'),
        'add_new_item'       => __('Add Programme', 'text_domain}'),
        'edit_item'          => __('Edit this Programme', 'text_domain'),
        'new_item'           => __('New Programme', 'text_domain'),
        'view_item'          => __('View Programme', 'text_domain'),
        'search_items'       => __('Search Programmes', 'text_domain'),
        'not_found'          => __('No Programmes found', 'text_domain'),
        'not_found_in_trash' => __('No Programmes found in Trash', 'text_domain'),
        'parent_item_colon'  => __('Parent single post type name:', 'text_domain'),
        'menu_name'          => __('Programmes', 'text_domain'),
    );

    $args = array(
        'labels'              => $labels,
        'hierarchical'        => false,
        'description'         => 'description',
        'public'              => true,
        'show_ui'             => true,
        'show_in_menu'        => true,
        'menu_position'       => 5,
        'show_in_nav_menus'   => true,
        'publicly_queryable'  => true,
        'exclude_from_search' => false,
        'has_archive'         => true,
        'query_var'           => true,
        'can_export'          => true,
        'rewrite'             => true,
        'capability_type'     => 'page', 
        'supports'            => array(
            'title',
            'editor',
            'author',
            'page-attributes',
            'thumbnail',
            'excerpt',
            'custom-fields',
            'revisions',
            'comments'
        ),
        'rewrite' => array(
            'with_front' => false,
            'slug'       => 'programmes'
        )
    );
    register_post_type('programmes', $args);
}
add_action('init', 'register_cpt_programmes');

// 1b. register the Programme FAQ post type
function register_cpt_programme_faq()
{
    $labels = array(
        'name'               => __('Programme FAQ', 'text_domain'),
        'singular_name'      => __('single programme faq', 'text_domain'),
        'add_new'            => _x('Add Programme FAQ', '${4:Name}', 'text_domain'),
        'add_new_item'       => __('Add Programme FAQ', 'text_domain}'),
        'edit_item'          => __('Edit this Programme FAQ', 'text_domain'),
        'new_item'           => __('New Programme FAQ', 'text_domain'),
        'view_item'          => __('View Programme FAQ', 'text_domain'),
        'search_items'       => __('Search Programme FAQ', 'text_domain'),
        'not_found'          => __('No Programme FAQs found', 'text_domain'),
        'not_found_in_trash' => __('No Programmes FAQs found in Trash', 'text_domain'),
        'parent_item_colon'  => __('Parent single post type name:', 'text_domain'),
        'menu_name'          => __('Programme FAQ', 'text_domain'),
    );

    $args = array(
        'labels'              => $labels,
        'hierarchical'        => false,
        'description'         => 'description',
        'public'              => true,
        'show_ui'             => true,
        'show_in_menu'        => true,
        'menu_position'       => 5,
        'show_in_nav_menus'   => true,
        'publicly_queryable'  => true,
        'exclude_from_search' => false,
        'has_archive'         => true,
        'query_var'           => true,
        'can_export'          => true,
        'rewrite'             => true,
        'capability_type'     => 'page', 
        'supports'            => array(
            'title',
            'editor',
            'author',
            'page-attributes',
            'thumbnail',
            'excerpt',
            'custom-fields',
            'revisions',
            'comments'
        ),
        'rewrite' => array(
            'with_front' => false,
            'slug'       => 'programme_faq'
        )
    );
    register_post_type('programme_faq', $args);
}
add_action('init', 'register_cpt_programme_faq');

// 2a. meta box - add a custom meta box on the Programme FAQ edit page
function pfaq_add_meta_boxes($post)
{
    add_meta_box('pfaq-parent', 'Parent Programme', 'pfaq_parent_meta_box', $post->post_type, 'side', 'core');
}
add_action('add_meta_boxes_programme_faq', 'pfaq_add_meta_boxes');

// 2b. select box - add a select input inside the Parent Programme meta box
function pfaq_parent_meta_box($post)
{
    $parents = get_posts(
        array(
            'post_type'   => 'programmes',
            'orderby'     => 'title',
            'order'       => 'ASC',
            'numberposts' => -1
        )
    );

    if(!empty($parents))
    {
        echo '<select name="parent_id" class="widefat">';

        foreach($parents as $parent)
        {
            printf('<option value="%s"%s>%s</option>', esc_attr($parent->ID), selected($parent->ID, $post->post_parent, false), esc_html($parent->post_title));
        }

        echo '</select>';
    }
}

// 3. rewrite rule - teach WordPress to parse the custom URL pattern
function pfaq_rewrite_rule()
{
    add_rewrite_rule('^programmes/([^/]+)/faq/?', 'index.php?programme_faq=$matches[1]-faq', 'top');
}
add_action('init', 'pfaq_rewrite_rule');

// 4. permalink - filter all Programme FAQ permalinks to match the desired URL pattern
function pfaq_post_type_link($post_link, $post, $leavename, $sample)
{
    if($post->post_type == 'programme_faq')
    {
        $parent = get_post($post->post_parent);
        $post_link = get_bloginfo('url') . '/programmes/' . $parent->post_name . '/faq';
    }

    return $post_link;
}
add_filter('post_type_link', 'pfaq_post_type_link', 1, 4);

代码中记录了达成解决方案的关键步骤。以下是总结：

注册自定义帖子类型

在编辑屏幕上添加“父程序”元框

添加重写规则，以便WordPress正确解析自定义URL结构

过滤永久链接，以便正确呈现FAQ页面的链接

代码：

// 1a. register the Programmes post type
function register_cpt_programmes()
{
    $labels = array(
        'name'               => __('Programmes', 'text_domain'),
        'singular_name'      => __('single programme name', 'text_domain'),
        'add_new'            => _x('Add Programme', '${4:Name}', 'text_domain'),
        'add_new_item'       => __('Add Programme', 'text_domain}'),
        'edit_item'          => __('Edit this Programme', 'text_domain'),
        'new_item'           => __('New Programme', 'text_domain'),
        'view_item'          => __('View Programme', 'text_domain'),
        'search_items'       => __('Search Programmes', 'text_domain'),
        'not_found'          => __('No Programmes found', 'text_domain'),
        'not_found_in_trash' => __('No Programmes found in Trash', 'text_domain'),
        'parent_item_colon'  => __('Parent single post type name:', 'text_domain'),
        'menu_name'          => __('Programmes', 'text_domain'),
    );

    $args = array(
        'labels'              => $labels,
        'hierarchical'        => false,
        'description'         => 'description',
        'public'              => true,
        'show_ui'             => true,
        'show_in_menu'        => true,
        'menu_position'       => 5,
        'show_in_nav_menus'   => true,
        'publicly_queryable'  => true,
        'exclude_from_search' => false,
        'has_archive'         => true,
        'query_var'           => true,
        'can_export'          => true,
        'rewrite'             => true,
        'capability_type'     => 'page', 
        'supports'            => array(
            'title',
            'editor',
            'author',
            'page-attributes',
            'thumbnail',
            'excerpt',
            'custom-fields',
            'revisions',
            'comments'
        ),
        'rewrite' => array(
            'with_front' => false,
            'slug'       => 'programmes'
        )
    );
    register_post_type('programmes', $args);
}
add_action('init', 'register_cpt_programmes');

// 1b. register the Programme FAQ post type
function register_cpt_programme_faq()
{
    $labels = array(
        'name'               => __('Programme FAQ', 'text_domain'),
        'singular_name'      => __('single programme faq', 'text_domain'),
        'add_new'            => _x('Add Programme FAQ', '${4:Name}', 'text_domain'),
        'add_new_item'       => __('Add Programme FAQ', 'text_domain}'),
        'edit_item'          => __('Edit this Programme FAQ', 'text_domain'),
        'new_item'           => __('New Programme FAQ', 'text_domain'),
        'view_item'          => __('View Programme FAQ', 'text_domain'),
        'search_items'       => __('Search Programme FAQ', 'text_domain'),
        'not_found'          => __('No Programme FAQs found', 'text_domain'),
        'not_found_in_trash' => __('No Programmes FAQs found in Trash', 'text_domain'),
        'parent_item_colon'  => __('Parent single post type name:', 'text_domain'),
        'menu_name'          => __('Programme FAQ', 'text_domain'),
    );

    $args = array(
        'labels'              => $labels,
        'hierarchical'        => false,
        'description'         => 'description',
        'public'              => true,
        'show_ui'             => true,
        'show_in_menu'        => true,
        'menu_position'       => 5,
        'show_in_nav_menus'   => true,
        'publicly_queryable'  => true,
        'exclude_from_search' => false,
        'has_archive'         => true,
        'query_var'           => true,
        'can_export'          => true,
        'rewrite'             => true,
        'capability_type'     => 'page', 
        'supports'            => array(
            'title',
            'editor',
            'author',
            'page-attributes',
            'thumbnail',
            'excerpt',
            'custom-fields',
            'revisions',
            'comments'
        ),
        'rewrite' => array(
            'with_front' => false,
            'slug'       => 'programme_faq'
        )
    );
    register_post_type('programme_faq', $args);
}
add_action('init', 'register_cpt_programme_faq');

// 2a. meta box - add a custom meta box on the Programme FAQ edit page
function pfaq_add_meta_boxes($post)
{
    add_meta_box('pfaq-parent', 'Parent Programme', 'pfaq_parent_meta_box', $post->post_type, 'side', 'core');
}
add_action('add_meta_boxes_programme_faq', 'pfaq_add_meta_boxes');

// 2b. select box - add a select input inside the Parent Programme meta box
function pfaq_parent_meta_box($post)
{
    $parents = get_posts(
        array(
            'post_type'   => 'programmes',
            'orderby'     => 'title',
            'order'       => 'ASC',
            'numberposts' => -1
        )
    );

    if(!empty($parents))
    {
        echo '<select name="parent_id" class="widefat">';

        foreach($parents as $parent)
        {
            printf('<option value="%s"%s>%s</option>', esc_attr($parent->ID), selected($parent->ID, $post->post_parent, false), esc_html($parent->post_title));
        }

        echo '</select>';
    }
}

// 3. rewrite rule - teach WordPress to parse the custom URL pattern
function pfaq_rewrite_rule()
{
    add_rewrite_rule('^programmes/([^/]+)/faq/?', 'index.php?programme_faq=$matches[1]-faq', 'top');
}
add_action('init', 'pfaq_rewrite_rule');

// 4. permalink - filter all Programme FAQ permalinks to match the desired URL pattern
function pfaq_post_type_link($post_link, $post, $leavename, $sample)
{
    if($post->post_type == 'programme_faq')
    {
        $parent = get_post($post->post_parent);
        $post_link = get_bloginfo('url') . '/programmes/' . $parent->post_name . '/faq';
    }

    return $post_link;
}
add_filter('post_type_link', 'pfaq_post_type_link', 1, 4);

/1a。注册课程职位类型
功能寄存器\u cpt\u程序（）
{
$labels=数组(
“名称”=>“‘程序’、‘文本域’”，
“单数_名称”=>uu（'单个程序名称'，'文本_域'），
'add_new'=>_x（'add program'，'${4:Name}'，'text_domain'），
'add_new_item'=>_uuu（'add program'，'text_domain}'），
“编辑项目”=>“‘编辑此程序’、‘文本域’”，
“新项目”=>“‘新程序’、‘文本域’”，
“查看项目”=>“‘查看程序’、‘文本域’”，
“搜索项目”=>“‘搜索程序’、‘文本域’”，
“未找到”=>“‘未找到程序’、‘文本域’”，
'not_found_in_trash'=>，
'parent_item_colon'=>'（'parent single post type name:'，'text_domain'），
“菜单名称”=>“‘程序’、‘文本域’”，
);
$args=数组(
“标签”=>$labels，
“分层”=>false，
“说明”=>“说明”，
“public”=>正确，
'show_ui'=>true，
“在菜单中显示”=>true，
“菜单位置”=>5，
“在导航菜单中显示”=>true，
“公开可查询”=>正确，
“从搜索中排除”=>false，
“has_archive”=>true，
'query_var'=>true，
“can_export”=>true，
“重写”=>正确，
“能力类型”=>“页面”，
'支持'=>数组(
“头衔”，
"编辑",，
“作者”，
“页面属性”，
“缩略图”，
"摘录",，
“自定义字段”，
"修订",，
“评论”
),
“重写”=>数组(
'with_front'=>false，
“slug”=>“程序”
)
);
注册后类型（'programmes'，$args）；
}
添加行动（“初始”、“注册”cpt“计划”）；
//1b。注册节目常见问题帖子类型
功能寄存器\u cpt\u程序\u常见问题解答（）
{
$labels=数组(
“名称”=>“‘程序常见问题解答’、‘文本域’”，
“单数_名称”=>uuuuuu（“单一程序常见问题解答”、“文本_域”），
'add_new'=>_x（'add program FAQ'、'${4:Name}、'text_domain'），
'add_new_item'=>uuuu（'add program FAQ'，'text_domain}'），
“编辑项目”=>“‘编辑此节目常见问题解答’、‘文本域’”，
“新项目”=>“‘新计划常见问题解答’、‘文本域’”，
“查看项目”=>“（“查看节目常见问题”、“文本域”），
“搜索项目”=>“‘搜索程序常见问题解答’、‘文本域’”，
“未找到”=>“‘未找到程序常见问题解答’、‘文本域’”，
“未在垃圾箱中找到”=>“‘在垃圾箱中找不到程序常见问题解答’、‘文本域’”，
'parent_item_colon'=>'（'parent single post type name:'，'text_domain'），
“菜单名称”=>“‘程序常见问题解答’、‘文本域’”，
);
$args=数组(
“标签”=>$labels，
“分层”=>false，
“说明”=>“说明”，
“public”=>正确，
'show_ui'=>true，
“在菜单中显示”=>true，
“菜单位置”=>5，
“在导航菜单中显示”=>true，
“公开可查询”=>正确，
“从搜索中排除”=>false，
“has_archive”=>true，
'query_var'=>true，
“can_export”=>true，
“重写”=>正确，
“能力类型”=>“页面”，
'支持'=>数组(
“头衔”，
"编辑",，
“作者”，
“页面属性”，
“缩略图”，
"摘录",，
“自定义字段”，
"修订",，
“评论”
),
“重写”=>数组(
'with_front'=>false，
“slug”=>“节目常见问题”
)
);
注册\发布\类型（'Program\ u faq'，$args）；
}
添加行动（“初始”、“注册”cpt“计划”faq）；
//2a。元框-在程序FAQ编辑页面上添加自定义元框
函数pfaq_add