[Yii2笔记]001说声Hello [ 技术分享 ]

说明

学习Yii Framework 2（易2框架）的过程是漫长的，也是充满乐趣的，以下是我学习Yii2框架时对官网英文资料(请参见原文网址)的代码实现，提供了较完整的代码，供你参考。不妥之处，请多多指正！

原文网址：

http://www.yiiframework.com/doc-2.0/guide-start-hello.html

说声 Hello

文件位置：

D:\phpwork\basic\controllers\SiteController.php

源代码：

<?php

namespace app\controllers;

use Yii;
use yii\filters\AccessControl;
use yii\web\Controller;
use yii\filters\VerbFilter;
use app\models\LoginForm;
use app\models\ContactForm;

class SiteController extends Controller
{
    public function behaviors()
    {
        return [
            'access' => [
                'class' => AccessControl::className(),
                'only' => ['logout'],
                'rules' => [
                    [
                        'actions' => ['logout'],
                        'allow' => true,
                        'roles' => ['@'],
                    ],
                ],
            ],
            'verbs' => [
                'class' => VerbFilter::className(),
                'actions' => [
                    'logout' => ['post'],
                ],
            ],
        ];
    }

    public function actions()
    {
        return [
            'error' => [
                'class' => 'yii\web\ErrorAction',
            ],
            'captcha' => [
                'class' => 'yii\captcha\CaptchaAction',
                'fixedVerifyCode' => YII_ENV_TEST ? 'testme' : null,
            ],
        ];
    }

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

    public function actionLogin()
    {
        if (!Yii::$app->user->isGuest) {
            return $this->goHome();
        }

        $model = new LoginForm();
        if ($model->load(Yii::$app->request->post()) && $model->login()) {
            return $this->goBack();
        }
        return $this->render('login', [
            'model' => $model,
        ]);
    }

    public function actionLogout()
    {
        Yii::$app->user->logout();

        return $this->goHome();
    }

    public function actionContact()
    {
        $model = new ContactForm();
        if ($model->load(Yii::$app->request->post()) && $model->contact(Yii::$app->params['adminEmail'])) {
            Yii::$app->session->setFlash('contactFormSubmitted');

            return $this->refresh();
        }
        return $this->render('contact', [
            'model' => $model,
        ]);
    }

    public function actionAbout()
    {
        return $this->render('about');
    }
    public function actionSay($msg="hello"){
        return $this->render('say',["msg"=>$msg]);
    }
}

文件位置：

D:\phpwork\basic\views\site\say.php

源代码：

<?php
use yii\helpers\Html;
?>
<?=Html::encode($msg)?>

测试

//访问网址：
http://localhost:8081/web/index.php?r=site/say&msg=hello+yii!
//在Yii Basic框架中显示了如下内容：
/*
hello yii! 
*/

（全文完）