yii2 captcha not change on page refresh - php

Question

I am using the default captcha implementation of the yii2 advanced framework. I have a problem: I want to change my captcha code every time I refresh a page but when I refresh the page my captcha code does not change.

Answer 1

The most correct solution will be to create your own CaptchaAction, that extends yii\captcha\CaptchaAction and override the run() method as follows:
namespace app\actions; // Change to your own
class CaptchaAction extends yii\captcha\CaptchaAction {
public $autoRegenerate = true;
public function run()
{
if ($this->autoRegenerate && Yii::$app->request->getQueryParam(self::REFRESH_GET_VAR) === null) {
$this->setHttpHeaders();
Yii::$app->response->format = Response::FORMAT_RAW;
return $this->renderImage($this->getVerifyCode(true));
}
return parent::run();
}
}

Answer 2

try this
<script>
window.onload = hello;
function hello()
{
document.getElementById('loginform-captcha-image').click();
}
</script>

Answer 3

because you have set YII_ENV to TEST like this defined('YII_ENV') or define('YII_ENV', 'test'); change it to defined('YII_ENV') or define('YII_ENV', 'prod');

Answer 4

I found a dirty way round this - simply trigger the click event when the page loads. Add this code at the very end of your view file, after the end of the form;
$js = <<<JS
$('#loginform-captcha-image').trigger('click');
JS;
$this->registerJs($js, $this::POS_READY);
It's not very pretty, but it works and it's the only way I've found to get aroun d this problem, which has also plagued my own sites.

Answer 5

In your controller, just unset the session of captcha:
session_start();
unset($_SESSION["__captcha/panel/panel-auth/captcha"]);
unset($_SESSION["__captcha/panel/panel-auth/captchacount"]);

Answer 6

This worked for me
$(document).ready(function(){
setTimeout(() => {
$("#form-captcha-image").click();
}, 100);
});

Answer 7

Update Your CaptchaAction as
public function actions()
{
return [
'error' => [
'class' => 'yii\web\ErrorAction',
],
'captcha' => [
'class' => 'yii\captcha\CaptchaAction',
'fixedVerifyCode' => null,
],
];
}
Read Fixed Verify Code
IF fixedVerifyCode if set then captcha is same as value setted in fixedVerifyCode
// code from yii\captcha\CaptchaAction in Yii2
public function getVerifyCode($regenerate = false)
{
if ($this->fixedVerifyCode !== null) {
return $this->fixedVerifyCode;
}
$session = Yii::$app->getSession();
$session->open();
$name = $this->getSessionKey();
if ($session[$name] === null || $regenerate) {
$session[$name] = $this->generateVerifyCode();
$session[$name . 'count'] = 1;
}
return $session[$name];
}