@jsonrpc.method('User.modify(user_id=Number, username=String, password=String, usr_data=Object)')
@auth.login_required
def user_modify(user_id, username, password, usr_data):
    """
    Редактирование информации о пользователях
    :param user_id: int
    :param username: str
    :param password: str
    :param usr_data: str
    :return: dict
    """
    auth_type, token = request.headers['Authorization'].split(None, 1)

    if not models.UserSession.is_operator(token):
        raise exceptions.InvalidCredentialsError

    if not isinstance(user_id, int):
        raise exceptions.InvalidParamsError

    user = models.User.get(user_id)

    if not user:
        raise errors.UserDoesNotExists

    try:
        user.username = username
    except models.InvalidLoginOrPassword:
        raise errors.InvalidUsage("User %r already exists" % username)

    if len(password):
        user.password = password

    if isinstance(usr_data, dict) and len(usr_data.keys()):
        for key in usr_data.keys():
            if key not in dir(user): continue
            user.__setattr__(key, usr_data[key])

    db.session.commit()

    return {
        "id": user.id,
        "username": user.username,
        "fam": user.fam,
        "name": user.name,
        "otch": user.otch,
    }