最近需要用到验证码，搜索了很多关于Yii2验证码的切换的介绍,下面我来记录一下,有需要了解Yii2下验证码的切换的朋友可参考。希望此文章对各位有所帮助。
模型代码如下：
<?phpnamespace appadminmodels;use yii;use yiiasemodel;use yiicaptchaCaptcha;class LoginForm extends Model{ public $verifyCode; public $password; public $username; public function rules(){ return [ ["verifyCode","captcha","captchaAction"=>"/admin/login/captcha","message"=>"{attribute}"], [["password","username"],"required"], ]; }}控制器代码如下：
<?phpnamespace appadmincontrollers;use Yii;use yiiwebController;use appadminmodelsLoginForm;use yiifiltersAccessControl;use yiifiltersVerbFilter;use yiicaptchaCaptchaAction;class LoginController extends Controller{ public function actions(){ return [ "captcha"=>"yiicaptchaCaptchaAction", "maxLength"=>4, "minLength"=>3, "width"=>10, "height"=>10 ]; } public function actionIndex(){ $log = new LoginForm(); return $this->renderPartial("index",["model"=>$log]); } //授权规则｝视图代码如下：
<?phpuse yiihelpersHtml;use yiiootstrapNav;use yiiootstrapNavBar;use yiiwidgetsBreadcrumbs;use appassetsAppAsset;use yiiwidgetsActiveFiel;use yiiwidgetsActiveForm;use yiicaptchaCaptcha;use appcomponentsHelloWidget;//url 创建use yiihelpersUrl;AppAsset::register($this);?><?php $this->beginPage()?><!DOCTYPE html><html><head> <title>博客后台管理系统</title> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1" /> <?=Html::cssFile("@web/css/bootstrap.min.css")?> <?=Html::cssFile("@web/css/style.css")?> <?=Html::jsFile("@web/js/jquery-1.11.3.min.js");?> <?=Html::jsFile("@web/js/bootstrap.min.js");?><?php ?></head> <?php $this->beginBody()?><body><div class="login-box"> <div class="login"> <div class="login-icon"> </div> <h4 class="login-title">博客后台管理系统</h4> <?php $form=ActiveForm::begin(["method"=>"post","action"=> Yii::$app->urlManager->createUrl("/admin/login/index")])?> <div class="login-input-box mb10"> <input type="text" class="form-control" name="username" placeholder="用户名"> </div> <div class="login-input-box mb10"> <input class="form-control" type="password" name="password" placeholder="密码"> </div> <div class="login-input-box mb30"> <input class="form-control" type="text" name="code" placeholder="验证码"> <span class="login-code"> <img id="code_img" src="<?= Url::toRoute("/admin/login/captcha")?>" title="点击刷新验证码" onClick="get_code(this);"> </span> </div> <input class="inputbtn bg-success btn-block" type="submit" value="登 录"> <?php ActiveForm::end();?> </div></div><script type="text/javascript"> //刷新验证码 function get_code(obj) { if(!obj) { obj = document.getElementById("code_img"); } obj.src = obj.src + "&t="+Date.parse(new Date()); }</script></body> <?php $this->beginBody()?></html><?php $this->endPage()?>这里整个代码差不多了但是要设置一样更重要的 app/vendor/yiisoft/yii2/captcha/的文件下的CaptchaAction.php这文件中修改getVerifyCode($regenerate = false) 的方法$regenerate参数为true （getVerifyCode($regenerate = true)）
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持网页设计。
