WordPress并不能很容易地修改gallery shortcode. 一些属性：

感谢用户peterbra 真的把整件事放在一起了a year ago.birgire 因为我想出了a solution 以有意义的方式添加属性除了birgires（据我所知），另一个选择是通过复制核心的现有代码来重建短代码media.php file 这是一种痛苦。

首字母上需要注意的一些事情additional_gallery_settings() 函数，来自peterbra:

在tmpl- 前缀是必需的data-setting 属性只需在functions.php 文件：

/**
 * Set up the new field in the media module.
 *
 * @return void
 */
function additional_gallery_settings() {
  ?>

    <script type="text/html" id="tmpl-custom-gallery-setting">
        <span>Style</span>
        <select data-setting="style">
            <option value="default-style">Default Style</option>
            <option value="custom-style">Custom Style</option>
            <option value="ie7-style">IE7 Style</option>
        </select>
    </script>

    <script type="text/javascript">
        jQuery( document ).ready( function() {
            _.extend( wp.media.gallery.defaults, {
                style: \'default-style\'
            } );

            wp.media.view.Settings.Gallery = wp.media.view.Settings.Gallery.extend( {
                template: function( view ) {
                    return wp.media.template( \'gallery-settings\' )( view )
                         + wp.media.template( \'custom-gallery-setting\' )( view );
                }
            } );
        } );
    </script>

  <?php
}
add_action( \'print_media_templates\', \'additional_gallery_settings\' );

/**
 * HTML Wrapper - Support for a custom class attribute in the native gallery shortcode
 *
 * @param string $html
 * @param array $attr
 * @param int $instance
 *
 * @return $html
 */
function customize_gallery_abit( $html, $attr, $instance ) {

    if( isset( $attr[\'style\'] ) && $style = $attr[\'style\'] ) {
        // Unset attribute to avoid infinite recursive loops
        unset( $attr[\'style\'] ); 

        // Our custom HTML wrapper
        $html = sprintf( 
            \'<div class="wpse-gallery-wrapper-%s">%s</div>\',
            esc_attr( $style ),
            gallery_shortcode( $attr )
        );
    }

    return $html;
}
add_filter( \'post_gallery\', \'customize_gallery_abit\', 10, 3 );