Just adding a field to the user table will not shown via xoopsuser.
You also have to add this to the user.php in the kernel folder:
1. here
$this->initVar('new_field', XOBJ_DTYPE_TXTAREA, null, false, null);
function XoopsUser($id = null)
{
$this->initVar('uid', XOBJ_DTYPE_INT, null, false);
$this->initVar('name', XOBJ_DTYPE_TXTBOX, null, false, 60);
$this->initVar('uname', XOBJ_DTYPE_TXTBOX, null, true, 25);
$this->initVar('email', XOBJ_DTYPE_TXTBOX, null, true, 60);
$this->initVar('url', XOBJ_DTYPE_TXTBOX, null, false, 100);
$this->initVar('user_avatar', XOBJ_DTYPE_TXTBOX, null, false, 30);
$this->initVar('user_regdate', XOBJ_DTYPE_INT, null, false);
$this->initVar('user_icq', XOBJ_DTYPE_TXTBOX, null, false, 15);
$this->initVar('user_from', XOBJ_DTYPE_TXTBOX, null, false, 100);
$this->initVar('user_sig', XOBJ_DTYPE_TXTAREA, null, false, null);
$this->initVar('user_viewemail', XOBJ_DTYPE_INT, 0, false);
$this->initVar('actkey', XOBJ_DTYPE_OTHER, null, false);
$this->initVar('user_aim', XOBJ_DTYPE_TXTBOX, null, false, 18);
$this->initVar('user_yim', XOBJ_DTYPE_TXTBOX, null, false, 25);
$this->initVar('user_msnm', XOBJ_DTYPE_TXTBOX, null, false, 100);
$this->initVar('pass', XOBJ_DTYPE_TXTBOX, null, false, 32);
$this->initVar('posts', XOBJ_DTYPE_INT, null, false);
$this->initVar('attachsig', XOBJ_DTYPE_INT, 0, false);
$this->initVar('rank', XOBJ_DTYPE_INT, 0, false);
$this->initVar('level', XOBJ_DTYPE_INT, 0, false);
$this->initVar('theme', XOBJ_DTYPE_OTHER, null, false);
$this->initVar('timezone_offset', XOBJ_DTYPE_OTHER, null, false);
$this->initVar('last_login', XOBJ_DTYPE_INT, 0, false);
$this->initVar('umode', XOBJ_DTYPE_OTHER, null, false);
$this->initVar('uorder', XOBJ_DTYPE_INT, 1, false);
// RMV-NOTIFY
$this->initVar('notify_method', XOBJ_DTYPE_OTHER, 1, false);
$this->initVar('notify_mode', XOBJ_DTYPE_OTHER, 0, false);
$this->initVar('user_occ', XOBJ_DTYPE_TXTBOX, null, false, 100);
$this->initVar('bio', XOBJ_DTYPE_TXTAREA, null, false, null);
$this->initVar('user_intrest', XOBJ_DTYPE_TXTBOX, null, false, 150);
$this->initVar('user_mailok', XOBJ_DTYPE_INT, 1, false);
2. starting at line 287
function new_field()
{
return $this->getVar("new_field");
}
And also in the function insert()
