在Yii下建立工程並實現用戶註冊登陸
編輯工具：Netbeans，wampserver
數據庫：MySQL
相應工程代碼下載鏈接：Yii下用戶註冊登錄系統
【下載Yii庫，解壓並使用命令建立工程】
以庫文件在桌面並把工程sys建立在F盤的wamp/www文件夾下爲例輸入指令：
cd Desktop
cd yii/framework
yiic webapp F:wamp/www/sys
過程中如果出現‘’”php.exe”’不是內部或外部命令，也不是可運行的程序’的提示
解決方法：
打開yiic.bat，在set PHP_COMMAND後添加php的路徑
修改path環境變量（把php.exe的路徑設置到環境變量上去，在分號後面添加即可）
數據庫
數據庫代碼：
SET SQL_MODE="NO_AUTO_VALUE_ON_ZERO";
SET time_zone = "+00:00";
/*!40101 SET @OLD_CHARACTER_SET_CLIENT=@@CHARACTER_SET_CLIENT */;
/*!40101 SET @OLD_CHARACTER_SET_RESULTS=@@CHARACTER_SET_RESULTS */;
/*!40101 SET @OLD_COLLATION_CONNECTION=@@COLLATION_CONNECTION */;
/*!40101 SET NAMES utf8 */;
--
-- 數據庫: `sys`
--
-- --------------------------------------------------------
--
-- 表的結構 `user`
--
CREATE TABLE IF NOT EXISTS `user` (
`userId` int(10) NOT NULL AUTO_INCREMENT,
`userName` varchar(64) CHARACTER SET utf8 NOT NULL,
`password` varchar(32) CHARACTER SET utf8 NOT NULL,
PRIMARY KEY (`userId`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 AUTO_INCREMENT=3 ;
工程文件結構
< protected / views / yiic.php >
修改$yiic的路徑爲框架文件的路徑
< protected / index.php >
修改$yii的路徑
< protected / config / main.php >
連接數據庫，修改main.php中’db’的內容，如下
【views】
Yii的views目錄下有layouts和 site 兩個文件夾
< protected / views / layouts / main.php >
layouts中的main.php爲頁面主要框架，而site的內容顯示在 $content
自行修改菜單
< protected / site >
< protected / views / site / Register.php >
<?php
$this->pageTitle=Yii::app()->name . ' - Register';
$this->breadcrumbs=array(
'Register',
);
?>
<div class="form">
<?php
$form=$this->beginWidget('CActiveForm', array(
'id'=>'register-form',
'enableClientValidation'=>true,
'clientOptions'=>array(
'validateOnSubmit'=>true,
),
));
?>
<?php
echo $form->errorSummary($model);
?>
<div class="row">
<?php echo $form->labelEx($model,'userName'); ?>
<?php echo $form->textField($model,'userName'); ?>
<?php echo $form->error($model,'userName'); ?>
</div>
<div class="row">
<?php echo $form->labelEx($model,'password'); ?>
<?php echo $form->passwordField($model,'password'); ?> <!--渲染密碼-->
<?php echo $form->error($model,'password'); ?>
</div>
<div class="row buttons">
<?php echo CHtml::submitButton('Submit'); ?>
</div>
<?php $this->endWidget(); ?>
</div>
< protected / views / site / Login.php >
<?php
/* @var $this SiteController */
/* @var $model LoginForm */
/* @var $form CActiveForm */
$this->pageTitle=Yii::app()->name . ' - Login';
$this->breadcrumbs=array(
'Login',
);
?>
<h1>Login</h1>
<div class="form">
<?php $form=$this->beginWidget('CActiveForm', array(
'id'=>'login-form',
'enableClientValidation'=>true,
'clientOptions'=>array(
'validateOnSubmit'=>true,
),
)); ?>
<div class="row">
<?php echo $form->labelEx($model,'userName'); ?>
<?php echo $form->textField($model,'userName'); ?>
<?php echo $form->error($model,'userName'); ?>
</div>
<div class="row">
<?php echo $form->labelEx($model,'password'); ?>
<?php echo $form->passwordField($model,'password'); ?>
<?php echo $form->error($model,'password'); ?>
</div>
<div class="row buttons">
<?php echo CHtml::submitButton('Login'); ?>
</div>
<?php $this->endWidget(); ?>
</div><!-- form -->
【models】
Yii中的Model主要實現的功能爲
（1）具備屬性來存儲數據
（2）public functions rules() 用來定義驗證規則
（3）public function attributeLabels() 聲明屬性對於的標籤名稱
< protected / models / RegisterForm.php>
<?php
class RegisterForm extends CFormModel{
public $userName;
public $password;
public function rules(){
return array(
array('userName,password','required')
);
}
}
?>
< protected / models / LoginForm.php >
<?php
class LoginForm extends CFormModel
{
public $userName;
public $password;
private $_identity;
/**
* Declares the validation rules.
* The rules state that username and password are required,
* and password needs to be authenticated.
*/
public function rules()
{
return array(
// username and password are required
array('userName, password', 'required'),
// password needs to be authenticated
array('password', 'authenticate'),
);
}
/**
* Authenticates the password.
* This is the 'authenticate' validator as declared in rules().
*/
public function authenticate($attribute,$params)
{
if(!$this->hasErrors())
{
$this->_identity=new UserIdentity($this->userName,$this->password);
if(!$this->_identity->authenticate())
$this->addError('password','Incorrect username or password.');
}
}
/**
* Logs in the user using the given username and password in the model.
* @return boolean whether login is successful
*/
public function login()
{
if($this->_identity===null)
{
$this->_identity=new UserIdentity($this->userName,$this->password);
$this->_identity->authenticate();
}
if($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;
}
}
}
【Controllers】
用戶註冊登錄操作，主要爲數據的查詢、插入
< protected / controllers / SiteController.php >
<?php
class SiteController extends Controller
{
/**
* Declares class-based actions.
*/
public function actions()
{
return array(
// captcha action renders the CAPTCHA image displayed on the contact page
'captcha'=>array(
'class'=>'CCaptchaAction',
'backColor'=>0xFFFFFF,
),
// page action renders "static" pages stored under 'protected/views/site/pages'
// They can be accessed via: index.php?r=site/page&view=FileName
'page'=>array(
'class'=>'CViewAction',
),
);
}
public function actionIndex(){
$this->render('index');
}
public function actionRegister(){
$model = new RegisterForm;
if(isset($_POST['RegisterForm'])){
$model->attributes=$_POST['RegisterForm'];
//不能寫成"$userName = trim($model->userName);" or "$userName = isset($model->userName);"
$userName = $model->userName;
$password = md5($model->password);
$conn = Yii::app()->db;
$msql = "select userName from `user` where userName = '$userName' ";
$command = $conn->createCommand($msql);
$num = $command->queryRow(); //返回userName='$userName'那條記錄
if($num){
$this->refresh();
} else {
$sql="insert into `user`(userName,password) values('$userName','$password')";
$command = $conn->createCommand($sql);
$dataReader = $command->query();
if($dataReader){
$this->redirect(Yii::app()->createUrl('/site/Login')); //控制器間跳轉
exit();
}
}
$this->refresh();
}
$this->render('register',array('model'=>$model));
}
public function actionLogin(){
$model=new LoginForm;
if(isset($_POST['LoginForm'])){
$model->attributes = $_POST['LoginForm'];
$username = $model->userName;
$password = md5($model->password);
$conn = Yii::app()->db;
$sql = "select * from `user` where userName = '$username'";
$command = $conn->createCommand($sql);
$row = $command->queryAll(); //獲取所有數據
foreach($row as $k => $v){ //獲取到的數據爲二維數組
$name = $v['userName'];
$pw = $v['password'];
}
if($name){
if($pw == $password){
Yii::app()->session['user'] = $name; //記錄登錄用戶的session
$this->redirect(Yii::app()->createUrl('/site/content'));
} else {
echo "password is wrong";
$this->refresh();
}
} else{
echo "user is not exist";
$this->refresh(); //刷新頁面
}
}
// display the login form
$this->render('login',array('model'=>$model));
}
public function actionContent(){
$model = new ContentForm;
if(isset($_POST['ContentForm'])){
$model->attributes = $_POST['ContentForm'];
$content = $model->content;
$conn = Yii::app()->db;
$sql = "insert into `user`(message)values('$content')";
$command = $conn->createCommand($sql);
$data = $command->query();
if($data){
$this->redirect(Yii::app()->createUrl('/site/index'));
}
}
$this->render('content',array('model'=>$model));
}
/**
* 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);
}
}
}
?>
< protected / components >目錄下的文件
< Controller.php >
<?php
class Controller extends CController
{
public $layout='//layouts/column1';
public $menu=array();
public $breadcrumbs=array();
}
?>
< UserIdentity.php >
<?php
class UserIdentity extends CUserIdentity
{
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;
}
}
?>
最終效果：
數據庫數據：
備註：
以上項目在建立的時候，視圖文件都在views/site上，當建立的是大工程的時候，工程文件就會變多，文件管理也會變得麻煩，而且，以上的文件結構也是不規範的，不符合MVC的文件結構，因此，可以參考以下工程文件結構
把相應的代碼寫到相應的控制器文件下，不過有兩點需要注意：
（1）每個控制器下最好也寫上actionError()函數，可以用於錯誤提示
（2）由於每個控制器名稱和視圖名稱是對應的，當視圖下的文件名稱是什麼，對應的控制器動作名稱也要相同
例如：
controllers/RegisterController 的動作actionIndex() 和 views/register下的index.php 對應一致，否則會出現“The system is unable to find the requested action "index".” 的錯誤
