代码实现给 bbPress 前台编辑器增加添加媒体上传按钮

add_filter( 'bbp_after_get_the_content_parse_args', 'bavotasan_bbpress_upload_media' );
/**
 * Allow upload media in bbPress
 *
 * This function is attached to the 'bbp_after_get_the_content_parse_args' filter hook.
 */
function bavotasan_bbpress_upload_media( $args ) {
    $args['media_buttons'] = true;

    return $args;

添加到你的主题或者子主题的 function.php 文件里面。