我想创建Yii中登录模块，但我却得到了意想不到的错误：
没有定义属性“LoginForm._id”。
我使用的是$_id上UserIdentify类变量。 为什么它显示LoginForm._id没有定义的错误？
class UserIdentity extends CUserIdentity {
/**
* Authenticates a user.
*/
private $_id;
public function authenticate() {
$user = Users::model()->findByAttributes(array('username' => $this->username));
if ($user === null)
$this->errorCode = self::ERROR_USERNAME_INVALID;
else if ($user->password !== $this->password)
$this->errorCode = self::ERROR_PASSWORD_INVALID;
else {
$this->_id = $user->id;
$this->setState('lastLoginTime', $user->lastLoginTime);
$this->errorCode = self::ERROR_NONE;
}
return !$this->errorCode;
}
public function getId() {
return $this->id;
}
}
你应该修改错字：
/**
* @return integer the ID of the user record
*/
public function getId()
{
return $this->_id;
}
这里是LoginForm.php代码：
/**
* LoginForm class.
* LoginForm is the data structure for keeping
* user login form data. It is used by the 'login' action of 'SiteController'.
*/
class LoginForm extends CFormModel {
public $username;
public $password;
public $rememberMe;
private $_identity;
/**
* Declares the validation rules.
* The rules state that username and password are required,
* and password needs to be authenticated.
*/
public function rules() {
return array(
// username and password are required
array('username, password', 'required'),
// rememberMe needs to be a boolean
array('rememberMe', 'boolean'),
// password needs to be authenticated
array('password', 'authenticate'),
);
}
/**
* Declares attribute labels.
*/
public function attributeLabels() {
return array(
'rememberMe' => 'Remeber me next time',
);
}
/**
* Authenticates the password.
* This is the 'authenticate' validator as declared in rules().
*/
public function authenticate($attribute, $params) {
if (!$this->hasErrors()) {
$this->_identity = UserIdentity::authenticate($this->username,$this->password);
if (!$this->_identity) {
$this->addError('password', 'Incorrect username or password.');
}
}
}
/**
* Logs in the user using the given username and password in the model.
* @return boolean whether login is successful
*/
public function login() {
if ($this->_identity === null) {
$this->_identity = UserIdentity::authenticate($this->username,$this->password);
}
print_r($this->_identity->errorCode); die;
if ($this->_identity->errorCode === UserIdentity::ERROR_NONE) {
$duration = $this->rememberMe ? 3600 * 24 * 30 : 0; // 30 days
Yii::app()->user->login($this->_identity, $duration);
return true;
}
else
return false;
}
}
这里是控制器代码：
/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
class UsersController extends Controller {
/**
* This is the action to handle external exceptions.
*/
public function actionError() {
if ($error = Yii::app()->errorHandler->error) {
if (Yii::app()->request->isAjaxRequest)
echo $error['message'];
else
$this->render('error', $error);
}
}
/**
* Displays the login page
*/
public function actionLogin() {
$model = new LoginForm;
// if it is ajax validation request
if (isset($_POST['ajax']) && $_POST['ajax'] === 'login-form') {
echo CActiveForm::validate($model);
Yii::app()->end();
}
// collect user input data
if (isset($_POST['LoginForm'])) {
$model->attributes = $_POST['LoginForm'];
// validate user input and redirect to the previous page if valid
if ($model->validate() && $model->login())
$this->redirect(Yii::app()->user->returnUrl);
}
// display the login form
$this->render('login', array('model' => $model));
}
/**
* Logs out the current user and redirect to homepage.
*/
public function actionLogout() {
Yii::app()->user->logout();
$this->redirect(Yii::app()->homeUrl);
}
}
