水银密令,catia安装方法,交通违章代码查询
本文实例讲述了yii框架实现的验证码、登录及退出功能。分享给大家供大家参考，具体如下：
捣鼓了一下午，总算走通了，下面贴出代码。
model
我要评论
<?php
class auth extends cactiverecord {
public static function model($classname = __class__) {
return parent::model($classname);
}
public function tablename() {
return '{{auth}}';
}
}
注：我的用户表是auth，所以模型是auth.php
<?php
class indexform extends cformmodel {
public $a_account;
public $a_password;
public $rememberme;
public $verifycode;
public $_identity;
public function rules() {
return array(
array('verifycode', 'captcha', 'allowempty' => !ccaptcha::checkrequirements(), 'message'=>'请输入正确的验证码'),
array('a_account', 'required', 'message' => '用户名必填'),
array('a_password', 'required', 'message' => '密码必填'),
array('a_password', 'authenticate'),
array('rememberme', 'boolean'),
);
}
public function authenticate($attribute, $params) {
if (!$this->haserrors()) {
$this->_identity = new useridentity($this->a_account, $this->a_password);
if (!$this->_identity->authenticate()) {
$this->adderror('a_password', '用户名或密码不存在');
}
}
}
public function login() {
if ($this->_identity === null) {
$this->_identity = new useridentity($this->a_account, $this->a_password);
$this->_identity->authenticate();
}
if ($this->_identity->errorcode === useridentity::error_none) {
$duration = $this->rememberme ? 60*60*24*7 : 0;
yii::app()->user->login($this->_identity, $duration);
return true;
} else {
return false;
}
}
public function attributelabels() {
return array(
'a_account' => '用户名',
'a_password' => '密码',
'rememberme' => '记住登录状态',
'verifycode' => '验证码'
);
}
}
注：indexform也可以写成loginform，只是系统内已经有了，我就没有替换它，同时注意看自己用户表的字段，一般是password和username，而我的是a_account和a_password
controller
<?php
class indexcontroller extends controller {
public function actions() {
return array(
'captcha' => array(
'class' => 'ccaptchaaction',
'width'=>100,
'height'=>50
)
);
}
public function actionlogin() {
if (yii::app()->user->id) {
echo "<div>欢迎" . yii::app()->user->id . "，<a href='" . site_url . "admin/index/logout'>退出</a></div>";
} else {
$model = new indexform();
if (isset($_post['indexform'])) {
$model->attributes = $_post['indexform'];
if ($model->validate() && $model->login()) {
echo "<div>欢迎" . yii::app()->user->id . "，<a href='" . site_url . "admin/index/logout'>退出</a></div>";exit;
}
}
$this->render('login', array('model' => $model));
}
}
public function actionlogout() {
yii::app()->user->logout();
$this->redirect(site_url . 'admin/index/login');
}
}
注：第一个方法是添加验证码的
view
<meta http-equiv="content-type" content="text/html;charset=utf-8">
<?php
$form = $this->beginwidget('cactiveform', array(
'id' => 'login-form',
'enableclientvalidation' => true,
'clientoptions' => array(
'validateonsubmit' => true
)
));
?>
<div class="row">
<?php echo $form->labelex($model,'a_account'); ?>
<?php echo $form->textfield($model,'a_account'); ?>
<?php echo $form->error($model,'a_account'); ?>
</div>
<div class="row">
<?php echo $form->labelex($model,'a_password'); ?>
<?php echo $form->passwordfield($model,'a_password'); ?>
<?php echo $form->error($model,'a_password'); ?>
</div>
<?php if(ccaptcha::checkrequirements()) { ?>
<div class="row">
<?php echo $form->labelex($model, 'verifycode'); ?>
<?php $this->widget('ccaptcha'); ?>
<?php echo $form->textfield($model, 'verifycode'); ?>
<?php echo $form->error($model, 'verifycode'); ?>
</div>
<?php } ?>
<div class="row rememberme">
<?php echo $form->checkbox($model,'rememberme'); ?>
<?php echo $form->label($model,'rememberme'); ?>
<?php echo $form->error($model,'rememberme'); ?>
</div>
<div class="row buttons">
<?php echo chtml::submitbutton('submit'); ?>
</div>
<?php $this->endwidget(); ?>
同时修改项目下protected/components下的useridentity.php
<?php
/**
* useridentity represents the data needed to identity a user.
* it contains the authentication method that checks if the provided
* data can identity the user.
*/
class useridentity extends cuseridentity
{
/**
* authenticates a user.
* the example implementation makes sure if the username and password
* are both 'demo'.
* in practical applications, this should be changed to authenticate
* against some persistent user identity storage (e.g. database).
* @return boolean whether authentication succeeds.
*/
public function authenticate()
{
/*
$users=array(
// username => password
'demo'=>'demo',
'admin'=>'admin',
);
if(!isset($users[$this->username]))
$this->errorcode=self::error_username_invalid;
elseif($users[$this->username]!==$this->password)
$this->errorcode=self::error_password_invalid;
else
$this->errorcode=self::error_none;
return !$this->errorcode;
*/
$user_model = auth::model()->find('a_account=:name',array(':name'=>$this->username));
if($user_model === null){
$this -> errorcode = self::error_username_invalid;
return false;
} else if ($user_model->a_password !== md5($this -> password)){
$this->errorcode=self::error_password_invalid;
return false;
} else {
$this->errorcode=self::error_none;
return true;
}
}
}
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