yii2 验证码在页面刷新时不会改变 [英] yii2 captcha not change on page refresh

问题描述

我使用的是 yii2 高级框架的默认验证码实现.我有一个问题:我想在每次刷新页面时更改我的验证码，但是当我刷新页面时，我的验证码没有改变.

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.

推荐答案

最正确的解决方案是创建你自己的 CaptchaAction，扩展 yii\captcha\CaptchaAction并按如下方式覆盖 run() 方法:

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();
    }
}

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