如何解决如何刷新页面刷新/加载上的验证码图像？
| 我想强迫我的网站在每次加载时都刷新验证码图像，所以我有一个用onload（）事件触发的javascript方法。在这里，我有以下几行：document.getElementById(\'yw0_button\').click;
<?php if(extension_loaded(\'gd\')): ?>
<div class=\"row\">
<?php echo $form->labelEx($model,\'verifyCode\'); ?>
<div>
<?php
$this->widget(\'CCaptcha\',array(\'showRefreshButton\'=>true,\'buttonType\'=>\'button\',\'buttonOptions\'=>
array(\'type\'=>\'image\',\'src\'=>\"/path/images/refresh-icon.png\",\'width\'=>30,),\'buttonLabel\'=>\'Refrescar imagen\'),false);
?>
<br>
<?php echo $form->textField($model,\'verifyCode\'); ?>
</div>
<div class=\"hint\">
Porfavor ingrese las letras como las ve en la imagen superior.
<br/>No hay distincion entre minúsculas y mayúsculas.</div>
</div>
<?php endif; ?>
<?php if(extension_loaded(\'gd\')): ?>
<div class=\"row\">
<?php echo $form->labelEx($model,\'verifyCode\'); ?>
<div>
<?php
$this->widget(\'CCaptcha\',\'buttonOptions\'=>
array(\'type\'=>\'image\',false);
?>
<br>
<?php echo $form->textField($model,\'verifyCode\'); ?>
</div>
<div class=\"hint\">
Porfavor ingrese las letras como las ve en la imagen superior.
<br/>No hay distincion entre minúsculas y mayúsculas.</div>
</div>
<?php endif; ?>
解决方法
如果有人在开始使用Yii时遇到类似的问题。.这就是我解决了触发点击的CAPTCHA问题：我有一个事件触发了onload事件，该事件具有以下代码：
$（\'＃yw0_button \'）。click（）;
当然一定有更好的方法，即时开放的建议！但是，作为一种临时解决方案，它可以很好地工作，每次加载页面时刷新验证码图像。祝好运！
编辑：我所做的是像这样处理我的html页面的onload事件
<body onload=\"initialize()\">
..
</body>
function initialize()
{
$(\'#yw0_button\').click();
}
POST
GET
CCaptcha
<?php
$this->widget(\"CCaptcha\",array(
\'buttonLabel\' => \"Generate another code\",\'showRefreshButton\' => false,\'clickableImage\' => true
));
?>
CCaptchaAction
Captcha
CaptchaAction
CCaptcha
CCaptchaAction
components
CCaptchaAction
run()
render_refreshed
if
Captcha
refresh
false
CCaptcha
src
CaptchaAction.php
<?php
Yii::import(\"system.web.widgets.captcha.CCaptchaAction\");
class CaptchaAction extends CCaptchaAction
{
const RENDER_REFRESHED_GET_VAR = \"render_refreshed\";
public function run()
{
if (isset($_GET[self::REFRESH_GET_VAR])) // AJAX request for regenerating code
{
$code = $this->getVerifyCode(true);
echo CJSON::encode(array(
\'hash1\' => $this->generateValidationHash($code),\'hash2\' => $this->generateValidationHash(strtolower($code)),// we add a random \'v\' parameter so that FireFox can refresh the image
// when src attribute of image tag is changed
\'url\'=> $this->getController()->createUrl($this->getId(),array(
\'v\' => uniqid()
)),));
}
else if (isset($_GET[self::RENDER_REFRESHED_GET_VAR]))
{
$this->renderImage($this->getVerifyCode(true));
}
else
$this->renderImage($this->getVerifyCode());
Yii::app()->end();
}
}
Captcha.php
<?php
Yii::import(\"web.system.widgets.CCaptcha\");
class Captcha extends CCaptcha
{
public $refresh = false;
protected function renderImage()
{
if (!isset($this->imageOptions[\'id\']))
$this->imageOptions[\'id\'] = $this->getId();
if ($this->refresh)
{
$url = $this->getController()->createUrl($this->captchaAction,array(
\'v\' => uniqid(),CaptchaAction::RENDER_REFRESHED_GET_VAR => 1
));
}
else
{
$url = $this->getController()->createUrl($this->captchaAction,array(
\'v\' => uniqid()
));
}
$alt = isset($this->imageOptions[\'alt\']) ? $this->imageOptions[\'alt\'] : \'\';
echo CHtml::image($url,$alt,$this->imageOptions);
}
}
...
// Creating order model\'s instance
$model = new MyModel();
$refreshCaptcha = true;
if (isset($_POST[\'MyModel\']))
{
$refreshCaptcha = false;
...
}
...
$this->render(\"myView\",array(
\'model\' => $model,\'refreshCaptcha\' => $refreshCaptcha
));
myView
<?php
$this->widget(\"Captcha\",\'clickableImage\' => true,\'refresh\' => $refreshCaptcha
));
CCaptchaAction
CaptchaAction
actions
public function actions()
{
return array(
\'captcha\'=>array(
\'class\'=>\'CaptchaAction\',\'backColor\'=>0xFFFFFF
)
);
}
class CaptchaValidatorRefresh extends CCaptchaValidator
{
public function clientValidateAttribute($object,$attribute)
{
$js=\"\";
if(!$this->allowEmpty)
{
$message=$this->message!==null ? $this->message : Yii::t(\'yii\',\'The verification code is incorrect.\');
$js=\"
if($.trim(value)==\'\') {
messages.push(\".CJSON::encode($message).\");
}
\";
}
return $js;
}
}
public function rules()
{
return array(
array(\'verifyCode\',\'CaptchaValidatorRefresh\',\'on\'=>\'request\',\'allowEmpty\'=>!CCaptcha::checkRequirements()),);
}
jQuery(document).ready(function() {
jQuery.ajax({
\'success\':function(html){jQuery(\"#yw0\").attr(\"src\",html)},\'url\':\'/checkout/finish/captcha?refresh=1\',\'cache\':false
});
return false;
});
$script=\' $(document).ready(function() {
document.getElementById(\"yw0_button\").click();
});\';
Yii::app()->clientScript->registerScript(\'yw0_button\',$script);
$form=$this->beginWidget(\'CActiveForm\',array(
\'id\'=>\'test-form\',\'action\'=>Yii::app()->createUrl(\'controllerName/actionName\'),\'enableClientValidation\'=>true,\'clientOptions\'=>array(
\'validateOnSubmit\'=>true,),));
Yii::app()->getController()->createAction(\'captcha\')->getVerifyCode(true);
$this->renderImage($this->getVerifyCode());
$this->renderImage($this->getVerifyCode(true));
public function beforeAction($action)
{
if($action->id == \'captcha\'){
$action->getVerifyCode(true);
}
return parent::beforeAction($action);
}
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