public function register($data)
{
if (!$data['email']) {
throw new Exception("email address could not be null");
}
if (!$data['password']) {
throw new Exception("password could not be null");
}
//check email
$isExist = $this->_isEmailExist($data['email']);
if ($isExist) {
throw new Exception("sorry, email address already exist");
}
$data['password'] = md5($data['password']);
$data['date_add'] = time();
$this->_model->insert($data);
}
