我在阅读管理页面中为我的WordPress CMS添加了一些自定义选项。我正在使用这些选项设置一些附加页面，然后将这些页面绑定到自定义操作。此方法允许我不使用一组硬编码的页面ID维护常量文件，并允许最终用户在哪些页面执行哪些功能方面具有更大的灵活性。

当这些选项更改时，我需要能够刷新永久链接，以便更新对这些页面的任何引用，并使整个站点的永久链接正常工作。

为了做到这一点，我写了以下内容：

function qd_flush_rules() { 
   flush_rewrite_rules(); 
} 
add_action(\'update_option_qd_news_page\', \'qd_flush_rules\');

qd_news_page 是我创建的选项的名称，我可以确认此设置已正确创建并正常工作。我也很确定这个函数是在数据保存后启动的，因为我在qd_flush_rules 函数正确输出设置值。

无论如何，重写规则没有刷新，我的永久链接返回404。如果我刷新WordPress permalinks管理页面中的permalinks，一切都会立即正常工作。

完整代码：

function qd_settings_api_init() {
  add_settings_section(
    \'qd_theme_setting_section\',
    \'Theme Reading Settings\',
    \'qd_theme_setting_section_callback_function\',
    \'reading\'
  );

  add_settings_field(
    \'qd_news_page\',
    \'News Page\',
    \'qd_news_page_dropdown_cbf\',
    \'reading\',
    \'qd_theme_setting_section\'
  );
  register_setting( \'reading\', \'qd_news_page\' );

}

add_action( \'admin_init\', \'qd_settings_api_init\' );

//FLUSH THE PERMALINKS WHEN THIS OPTION IS SAVED
function qd_flush_rules() { 
  flush_rewrite_rules(); 
  echo "News Page updated - " . get_option(\'qd_news_page\');
} 

add_action(\'update_option_qd_news_page\', \'qd_flush_rules\');

function qd_theme_setting_section_callback_function() {
    echo "<p>Setting Instructions</p>";
}

function qd_news_page_dropdown_cbf() {
  $args = array(
    \'depth\'                 => 0,
    \'child_of\'              => 0,
    \'selected\'              => get_option( \'qd_news_page\' ),
    \'echo\'                  => 1,
    \'name\'                  => \'qd_news_page\',
    \'id\'                    => \'qd_news_page\', // string
    \'show_option_none\'      => \'&mdash; Select &mdash;\', // string
    \'show_option_no_change\' => null, // string
    \'option_none_value\'     => \'0\', // string
  );
  wp_dropdown_pages( $args );
} 

update 12/8/15 11:24am est

想要澄清的是，自定义设置并不是直接创建永久链接结构，而是被自定义帖子类型用来分配其重写规则。

该代码摘录如下：

function qd_custom_post_types() { 
    $post_type_slug = "/" .  get_page_uri( get_option(\'qd_news_page\') );

    register_post_type( \'qd_news\', 
        array( \'labels\' => array(
            ...
            \'rewrite\'   => array( \'slug\' => $post_type_slug . \'/article\', \'with_front\' => false ),
            ...
        )
    );  
}
add_action( \'init\', \'qd_custom_post_types\');`

  function qd_settings_api_init() {
  add_settings_section(
    \'qd_theme_setting_section\',
    \'Theme Reading Settings\',
    \'qd_theme_setting_section_callback_function\',
    \'reading\'
  );

  add_settings_field(
    \'qd_news_page\',
    \'News Page\',
    \'qd_news_page_dropdown_cbf\',
    \'reading\',
    \'qd_theme_setting_section\'
  );
  if (delete_transient(\'qd_flush_rules\')) flush_rewrite_rules(); // * Added
  register_setting( \'reading\', \'qd_news_page\', \'qd_sanitize\' ); // * Changed

}

/* Added this function. */
function qd_sanitize($input) {
    set_transient(\'qd_flush_rules\');
    return $input;
}

add_action( \'admin_init\', \'qd_settings_api_init\' );

//FLUSH THE PERMALINKS WHEN THIS OPTION IS SAVED
function qd_flush_rules() { 
  flush_rewrite_rules(); 
  echo "News Page updated - " . get_option(\'qd_news_page\');
} 

add_action(\'update_option_qd_news_page\', \'qd_flush_rules\');

function qd_theme_setting_section_callback_function() {
    echo "<p>Setting Instructions</p>";
}

function qd_news_page_dropdown_cbf() {
  $args = array(
    \'depth\'                 => 0,
    \'child_of\'              => 0,
    \'selected\'              => get_option( \'qd_news_page\' ),
    \'echo\'                  => 1,
    \'name\'                  => \'qd_news_page\',
    \'id\'                    => \'qd_news_page\', // string
    \'show_option_none\'      => \'&mdash; Select &mdash;\', // string
    \'show_option_no_change\' => null, // string
    \'option_none_value\'     => \'0\', // string
  );
  wp_dropdown_pages( $args );
} 

//

function qd_custom_post_types() { 
    $post_type_slug = "/" .  get_page_uri( get_option(\'qd_news_page\') );

    register_post_type( \'qd_news\', 
        array(
            \'labels\' => array(
            \'name\' => __( \'Articles\' ),
            \'singular_name\' => __( \'Article\' )
        ),
        \'public\' => true,
        \'has_archive\' => true,
        \'rewrite\'   => array( \'slug\' => $post_type_slug . \'/article\', \'with_front\' => false ),
    )
  );
}
add_action( \'init\', \'qd_custom_post_types\');