Joomla管理登录自定义错误

Question

I'm using Google reCAPTCHA on joomla admini login section, Validation works fine.

Captcha validation added to administrator/components/com_login/models/login.php

 $privatekey = "myprivatekey";
 $resp = recaptcha_check_answer (
        $privatekey,
        $_SERVER["REMOTE_ADDR"],
        JRequest::getVar('recaptcha_challenge_field', '', 'method', 'recaptcha_challenge_field'),
        JRequest::getVar('recaptcha_response_field', '', 'method', 'recaptcha_response_field')
    );

 if (!$resp->is_valid) {
    //die('Incorrect Captcha...');
 }else{     
    $credentials = array(
        'username' => JRequest::getVar('username', '', 'method', 'username'),
        'password' => JRequest::getVar('passwd', '', 'post', 'string', JREQUEST_ALLOWRAW)
    );
    $this->setState('credentials', $credentials);
 }

What should I use instead of //die('Incorrect Captcha...'); to output Invalid Captcha! Error in login page?

Answer 1

Try this-

$app = JFactory::getApplication();
$app->enqueueMessage('Incorrect Captcha...', 'error');
$app->redirect(JURI::base());

Answer 2

You can use JError to show the error when the output in invalid.

For example:

JError::raiseError( JText::_( 'Invalid Captcha' ));

For more methods you can see this JError