我正在尝试构建一个新的自定义“媒体”样式的自定义字段（它允许用户从媒体库中选择视频或粘贴到url中），除保存新值外，其他一切都正常。

我的自定义设置为：

$wp_customize->register_control_type( \'WP3432_Video_Control\' );
$wp_customize->add_setting(\'feed_video_setting\', array(
    \'default\' => \'\',
    \'sanitize_callback\' => \'absint\'
));

$wp_customize->add_control(new WP3432_Video_Control( $wp_customize,
\'feed_video_control\', array(
    \'label\'   => \'Hero Video\',
    \'section\' => \'feed_settings_section\',
    \'settings\' => \'feed_video_setting\',
)));

我正在手动将setting customizer链接设置为\\u json方法：

public function to_json() {
    parent::to_json();
    ...
    $this->json[\'control_name\'] = $this->id;
    $this->json[\'setting_name\'] = $this->setting->id;
    ...
}

并在content\\u template方法中手动设置该属性：

public function content_template() {
        ?>
    ...
    <span class="use-url"> - or use URL -</span>
    <input class="js--video-url"
        id="{{ data.control_name }}"
        name="{{ data.control_name }}"
        data-customize-setting-link = "{{ data.setting_name }}"
        type="url" 
        value="{{ data.value }}"
    >
    ...
    <?php
}

这将在customizer表单中生成以下标记：

<input class="js--video-url" id="archive_video_control" name="archive_video_control" data-customize-setting-link="archive_video_setting" type="url" value="">

但当我检查get\\u theme\\u mods（）的内容时，我看到：

 [archive_video_setting] => 0

$wp_customize->add_setting( \'feed_video_setting\', array(
    \'default\' => \'\',
    \'sanitize_callback\' => function( $value ) {
        if ( is_numeric( $value ) ) {
            $value = intval( $value );
            if ( $value < 0 ) {
                return new WP_Error( \'invalid_attachment_id\', __( \'Invalid attachment ID\', \'myplugin\' ) );
            }
        } elseif ( ! empty( $value ) ) {
            $value = esc_url_raw( $value );
            if ( empty( $value ) ) {
                return new WP_Error( \'invalid_video_url\', __( \'Invalid URL\', \'myplugin\' ) );
            }
        }
        return $value;
    },
) );