Hi all.
the problem is next. When I try to open login page (index.php?r=site/login) I see the empty page.
the code was copy-pasted from official yii tutorial. So there aren’t any mistakes.
If delete this in SiteController: if(isset($_POST[‘loginForm’])) I see part of my view file for login page. What did I do incorrectly?
There must be some error… but you have to show as "your" code… so that we can help you…
mdomba here is the code:
SiteController.php
<?php
class SiteController extends CController
{
.....
public function actionLogin()
{
$form = new LoginForm;
if (isset($_POST['LoginForm']))
{
$form->attributes=$_POST['LoginForm'];
if($form->validate())
$this->redirect(Yii::app()->user-returnUrl);
$this->render('login', array('user'=>$form));
}
}
.....
}
LoginForm.php
<?php
class LoginForm extends CFormModel
{
public $username;
public $password;
public $rememberMe=false;
public function rules()
{
return array(
array('username, password', 'required'),
array('rememberMe', 'boolean'),
array('password', 'authenticate'),
);
}
public function authenticate($attribute, $params)
{
if(!$this->hasErrors())
{
$identity = new UserIdentity($this->username, $this->password);
if($identity->authenticate())
{
$duration=$this->rememberMe ? 3600*24*30 : 0;
Yii::app()->user->login($identity, $duration);
}
else
$this->addError('password', 'Invalid password.');
}
}
}
login.php
<h1>Login page</h1>
<div class="form">
<?php $form=$this->beginWidget('CActiveForm'); ?>
<?php echo $form->errorSummary($model); ?>
<div class="row">
<?php echo $form->label($model,'username'); ?>
<?php echo $form->textField($model,'username') ?>
</div>
<div class="row">
<?php echo $form->label($model,'password'); ?>
<?php echo $form->passwordField($model,'password') ?>
</div>
<div class="row rememberMe">
<?php echo $form->checkBox($model,'rememberMe'); ?>
<?php echo $form->label($model,'rememberMe'); ?>
</div>
<div class="row submit">
<?php echo CHtml::submitButton('Login'); ?>
</div>
<?php $this->endWidget(); ?>
</div>
public function actionLogin()
{
$form = new LoginForm;
if (isset($_POST['LoginForm']))
{
$form->attributes=$_POST['LoginForm'];
if($form->validate())
$this->redirect(Yii::app()->user-returnUrl);
}
$this->render('login', array('user'=>$form));
}
andy_s thanks 
So it was not exactly a copy/paste…