/**
* Check the username exist or not
* This method serves as the inline validation for username.
*
* @param string $attribute the attribute currently being validated
* @param array $params the additional name-value pairs given in the rule
*/
public function checkEmailExists($attribute, $params)
{
if (!$this->hasErrors()) {
if (!User::checkEmailExist($this->id, $this->email)) {
$this->addError($attribute, Yii::t('app', 'This email address has already been taken.'));
}
}
}
