def to_python(self, value, state):

        isdir = os.path.isdir(value.replace('*', ''))

        if (value.endswith('/*') or value.endswith('/**')) and isdir:

            return value

        elif not isdir:

            msg = _('This is not a valid path') 

        else:

            msg = _('You need to specify * or ** at the end of path (ie. /tmp/*)')

        raise formencode.Invalid(msg, value, state,

                                     error_dict={'paths_root_path':msg})            

class ValidSystemEmail(formencode.validators.FancyValidator):

    def to_python(self, value, state):

        sa = meta.Session

        try:

            user = sa.query(User).filter(User.email == value).scalar()

            if  user is None:

                raise formencode.Invalid(_("That e-mail address doesn't exist.") ,

                                         value, state)

        finally:

            meta.Session.remove()

        return value     

    class _UserForm(formencode.Schema):

        allow_extra_fields = True

        filter_extra_fields = True

        username = All(UnicodeString(strip=True, min=3, not_empty=True), ValidUsername(edit, old_data))

        if edit:

            new_password = All(UnicodeString(strip=True, min=3, not_empty=False), ValidPassword)

            admin = StringBoolean(if_missing=False)

        else:

            password = All(UnicodeString(strip=True, min=8, not_empty=True), ValidPassword)

        active = StringBoolean(if_missing=False)

        name = UnicodeString(strip=True, min=3, not_empty=True)

        lastname = UnicodeString(strip=True, min=3, not_empty=True)

    return _UserForm

RegisterForm = UserForm

def PasswordResetForm():

    class _PasswordResetForm(formencode.Schema):

        allow_extra_fields = True

        filter_extra_fields = True

        email = All(ValidSystemEmail(), Email(not_empty=True))             

    return _PasswordResetForm