我有一个widget类（派生自WP\\u widget），它有一个方法（通过ajax调用）来更新其部分选项（元素顺序），而无需用户单击“保存”，即可设置我从构造函数中执行的处理程序：

add_action(\'wp_ajax_bgw_update_order\', array(&$this, \'update_order\'));

Theupdate_order 方法的作用类似于this 问题，但它不会保存新选项。我的代码：

public function update_order() {
    if (!is_admin()) die(\'Not an admin\');
    if (!isset($_REQUEST[\'nonce\']) ||
        !wp_verify_nonce($_REQUEST[\'nonce\'], \'section-order-nonce\')) 
        die(\'Invalid Nonce\');
    $sections = $this->sections;
    $new_order = $_POST[\'section\'];
    $new_sections = array();

    foreach($new_order as $v) {
        if (isset($sections[$v])) {
            $new_sections[$v] = $sections[$v];
        }
    }
    $this->sections = $new_sections;
    $settings = $this->get_settings();
    $settings[$this->number][\'sections_order\'] = $new_sections;
    $this->save_settings($settings);
    print_r($this->get_settings());
    die();
}

我的update 函数执行常规操作：

public function update( $new_instance, $old_instance ) {
    $instance = array();
    $instance[\'username\'] = strip_tags($new_instance[\'username\']);
    $instance[\'count\'] = strip_tags($new_instance[\'count\']);
    // [...]
    return $instance;
}

当我登录时$settings 从…起update_order 它具有正确的值：

Array
(
    [3] => Array
        (
            [username] => username
            [count] => 0
            [title] => GitHub
            [skip_forks] => 1
            [show_octocat] => 1
            [sections_order] => Array
                (
                    [1] => Activity
                    [0] => Repositories
                )

        )

)

Theupdate 方法不会被调用，当我点击“保存”按钮时$instance （从form 方法）没有sections_order 钥匙

我得出的结论是save_settings 不会像我想的那样。

如何保存update_order 方法我要做的是节约sections_order 无需用户单击“保存”按钮。

<?php
class WPSE76224_Widget extends WP_Widget
{
    public function __construct()
    {
        // Create the widget options and such here, then call
        // $this->WP_Widget to let wordpress know about it.
    }

    public function widget($args, $instance)
    {
        // display the widget on the front end.
    }

    public function form($instance)
    {
        // The widget form in the admin area.
    }

    public function update($new, $old)
    {
        // Saves your data, called via AJAX. But your saving logic here.
    }
}