我使用JeremyHixon的生成器创建了一个选项页面，但该页面仅可供管理员用户访问。我想把这个提供给编辑。

我希望添加\\u角色，但我不确定如何实现这一点。非常感谢您的任何建议！

 * Generated by the WordPress Option Page generator
 * at http://jeremyhixon.com/wp-tools/option-page/
 */

class Example {
    private $example_options;

    public function __construct() {
        add_action( \'admin_menu\', array( $this, \'example_add_plugin_page\' ) );
        add_action( \'admin_init\', array( $this, \'example_page_init\' ) );
    }

    public function example_add_plugin_page() {
        add_menu_page(
            \'Example\', // page_title
            \'Example\', // menu_title
            \'manage_options\', // capability
            \'example\', // menu_slug
            array( $this, \'example_create_admin_page\' ), // function
            \'dashicons-admin-generic\', // icon_url
            2 // position
        );
    }

    public function example_create_admin_page() {
        $this->example_options = get_option( \'example_option_name\' ); ?>

        <div class="wrap">
            <h2>Example</h2>
            <p>some description</p>
            <?php settings_errors(); ?>

            <form method="post" action="options.php">
                <?php
                    settings_fields( \'example_option_group\' );
                    do_settings_sections( \'example-admin\' );
                    submit_button();
                ?>
            </form>
        </div>
    <?php }

    public function example_page_init() {
        register_setting(
            \'example_option_group\', // option_group
            \'example_option_name\', // option_name
            array( $this, \'example_sanitize\' ) // sanitize_callback
        );

        add_settings_section(
            \'example_setting_section\', // id
            \'Settings\', // title
            array( $this, \'example_section_info\' ), // callback
            \'example-admin\' // page
        );

        add_settings_field(
            \'text_label_0\', // id
            \'text-label\', // title
            array( $this, \'text_label_0_callback\' ), // callback
            \'example-admin\', // page
            \'example_setting_section\' // section
        );
    }

    public function example_sanitize($input) {
        $sanitary_values = array();
        if ( isset( $input[\'text_label_0\'] ) ) {
            $sanitary_values[\'text_label_0\'] = sanitize_text_field( $input[\'text_label_0\'] );
        }

        return $sanitary_values;
    }

    public function example_section_info() {
        
    }

    public function text_label_0_callback() {
        printf(
            \'<input class="regular-text" type="text" name="example_option_name[text_label_0]" id="text_label_0" value="%s">\',
            isset( $this->example_options[\'text_label_0\'] ) ? esc_attr( $this->example_options[\'text_label_0\']) : \'\'
        );
    }

}
if ( is_admin() )
    $example = new Example();

/* 
 * Retrieve this value with:
 * $example_options = get_option( \'example_option_name\' ); // Array of All Options
 * $text_label_0 = $example_options[\'text_label_0\']; // text-label
 */