<?php 
namespace controllers;
use yii\web\controller;
use yii\web\Cookie;

/**
* 视图的创建
*/
class HelloController extends Controdller
{

    public function actionIndex()
    {
        return $this->renderpartial('index');
    }
}

/**
* 视图的数据传递
*/
class HelloController extends Controdller
{

    public function actionIndex()
    {
        $hello_str = 'hello God!';
        $test_arr = array(1,2);

        //创建一个数组
        $date = array();

        //把需要传递给视图的数据，放到数组当中
        $data['view_hello_str']=$hello_str;
        $data['view_test_arr']=$test_arr;

        return $this->renderpartial('index',$data);
    }
}

/**
* 视图的数据安全 javascript代码
* 完整显示出来：<h1><?=Html::encode($view_hello_str):?></h1>
* 完全去掉script代码：<h1><?=HtmlPurifier::process($view_hello_str):?>
*/
class HelloController extends Controdller
{

    public function actionIndex()
    {
        $hello_str = 'hello God!<script>alert(3);</script>';
        $date = array();

        $data['view_hello_str']=$hello_str;
        return $this->renderpartial('index',$data);
    }
}

/**
* 视图的布局文件
* <?=$content;?>
* index视图中显示about视图:<?php echo $this->render('about',array('v_hello_str'=>'hello world!'));?>
* 其中数组中v_hello_str又可以在about视图中调用显示
*/
class HelloController extends Controdller
{
    public $layout = 'common';
    public function actionIndex()
    {
        return $this->render('index');
    }
}

/**
* 视图的数据块
* <?php $this->beginBlock('block1');?>
* <h1>index</h1>
* <?php $this->endBlock();?>
*
*
* 布局文件中调用
* <?=$this->blocks['block1'];?>
*/
class HelloController extends Controdller
{

    public function actionIndex()
    {
        return $this->render('index');
    }
}