對yii深入了解總結出：希望對初學者有些幫助

Active Record (AR) 是一個流行的 對象-關系映射 (ORM) 技術。 每個 AR 類代表一個數據表（或視圖），數據表（或視圖）的列在 AR 類中體現為類的屬性，一個 AR 實例則表示表中的一行。 常見的 CRUD 操作作為 AR 的方法實現。因此，我們可以以一種更加面向對象的方式訪問數據。 例如，我們可以使用以下代碼向 tbl_post 表中插入一個新行。

yii 表單驗證規則

<?php classContactFormextendsCFormModel { public$_id; public$contact;//聯系人 public$tel;//電話 public$fax;//傳真 public$zipcode;//郵編 public$addr;//地址 public$mobile;//手機 public$email;//郵箱 public$website;//網址 public$qq;//QQ public$msn;//MSN publicfunctionrules() { returnarray( array('contact','required','on'=>'edit','message'=>'聯系人必須填寫.'), array('contact','length','on'=>'edit','min'=>2,'max'=>10,'tooShort'=>'聯系人長度請控制在2-10個字符.','tooLong'=>'聯系人長度請控制在2-10個字符.'), array('tel','match','pattern'=>'/^(\d{3}-|\d{4}-)(\d{8}|\d{7})?$/','message'=>'請輸入正確的電話號碼.'), array('fax','match','pattern'=>'/^(\d{3}-|\d{4}-)(\d{8}|\d{7})?$/','message'=>'請輸入正確的傳真號碼.'), array('mobile','match','pattern'=>'/^13[0-9]{1}[0-9]{8}$|15[0189]{1}[0-9]{8}$|189[0-9]{8}$/','message'=>'請輸入正確的手機號碼.'), array('email','email','on'=>'edit','message'=>'郵箱輸入有誤.'), array('zipcode','required','on'=>'edit','message'=>'郵編必須填寫.'), array('zipcode','numerical','on'=>'edit','message'=>'郵編是6位數字.'), array('zipcode','length','on'=>'edit','min'=>6,'max'=>6,'tooShort'=>'郵編長度為6位數.','tooLong'=>'郵編長度為6位數.'), array('website','url','on'=>'edit','message'=>'網址輸入有誤.'), array('qq','match','pattern'=>'/^[1-9]{1}[0-9]{4,11}$/','message'=>'請輸入正確的QQ號碼.'), array('msn','email','on'=>'edit','message'=>'MSN輸入有誤.'), ); } }
$post=Post::model()->find(array(
? ? 'select'=>'title',
? ? 'condition'=>'postID=:postID',
? ? 'params'=>array(':postID'=>10),
));
// 查找 postID=10 的那一行
$post=Post::model()->find('postID=:postID', array(':postID'=>10));
$criteria = new CDbCriteria();
$criteria->select = 'table_name,model_id,sum(amount) total';
$criteria->group = 'table_name,model_id';
$criteria->addCondition("$nIdcId=4");//也可以$criteria->condition = "$nIdcId=4";
$aResult = accessory_info::model()->findAll($criteria);


$c = new CDbCriteria();
$c->select = 't.id, t.created_at, t.outsource_id, t.user_id, t.operate, t.content';
$c->join = 'LEFT JOIN outsource ON outsource.id=t.outsource_id';
$c->condition = 'outsource.idc_id IN(' . implode(',', $idc_ids) ?. ')';

if($last_log_id) {
$c->condition .= " AND t.id > $last_log_id";
}

$c->limit = 20;
$c->order = 't.id DESC';

$logs = OutsourceProcessLog::model()->findAll($c);

array(
'header'=>'支付渠道',
'name'=>'buy_method_id',
'value'=>'$data->buyMethod->title',
'filter'=>CHtml::listData(CoinBuyMethod::model()->findAll(), 'id', 'title'),//filter過濾篩選
),
array(
'name' => 'admin.username',
'filter' => CHtml::activeDropDownList($model, 'admin_id', CHtml::listData(Admin::model()->findAll(), 'id', 'username'), array('empty' => '-全部管理員-')),
),


$post=new Post;
$post->title='sample post';
$post->content='post body content';
$post->save();

$User = User::model();
$User->setIsNewRecord(true);
$User->name='wangliweid';
$User->sex=1;
$User->insert();?

$User = new User;
$User->name='wangdsdfliweid';
$User->insert();?

$User = User::model()->findByPk(1);
$User->name='wangliwei';
$User->sex=1;
$User->save();

public function tableName()
{
? ? return '{{post}}'; //使用表前綴功能
}

$post=Post::model()->findByPk(10); // 假設有一個帖子，其 ID 為 10
$post->delete(); // 從數據表中刪除此行

AR 依靠表中良好定義的主鍵。如果一個表沒有主鍵，則必須在相應的 AR 類中通過如下方式覆蓋 primaryKey() 方法指定哪一列或哪幾列作為主鍵。

public function primaryKey()
{
? ? return 'id';
? ? // 對于復合主鍵，要返回一個類似如下的數組
? ? // return array('pk1', 'pk2');
}

3. 創建記錄?
要向數據表中插入新行，我們要創建一個相應 AR 類的實例，設置其與表的列相關的屬性，然后調用 save() 方法完成插入：

$post=new Post;
$post->title='sample post';
$post->content='content for the sample post';
$post->create_time=time();
$post->save();


記錄在保存（插入或更新）到數據庫之前，其屬性可以賦值為 CDbExpression 類型。 例如，為保存一個由 MySQL 的 NOW() 函數返回的時間戳，我們可以使用如下代碼：

$post=new Post;
$post->create_time=new CDbExpression('NOW()');
// $post->create_time='NOW()'; 不會起作用，因為
// 'NOW()' 將會被作為一個字符串處理。
$post->save();
提示: 由于 AR 允許我們無需寫一大堆 SQL 語句就能執行數據庫操作， 我們經常會想知道 AR 在背后到底執行了什么 SQL 語句。這可以通過開啟 Yii 的 日志功能 實現。例如，我們在應用配置中開啟了 CWebLogRoute ，我們將會在每個網頁的最后看到執行過的 SQL 語句。

4. 讀取記錄?
要讀取數據表中的數據，我們可以通過如下方式調用 find 系列方法中的一種：

// 查找滿足指定條件的結果中的第一行
$post=Post::model()->find($condition,$params);
// 查找具有指定主鍵值的那一行
$post=Post::model()->findByPk($postID,$condition,$params);
// 查找具有指定屬性值的行
$post=Post::model()->findByAttributes($attributes,$condition,$params);
// 通過指定的 SQL 語句查找結果中的第一行
$post=Post::model()->findBySql($sql,$params);


$criteria=new CDbCriteria;
$criteria->select='title'; ?// 只選擇 'title' 列
$criteria->condition='postID=:postID';
$criteria->params=array(':postID'=>10);
$post=Post::model()->find($criteria); // $params 不需要了
注意，當使用 CDbCriteria 作為查詢條件時，$params 參數不再需要了，因為它可以在 CDbCriteria 中指定，就像上面那樣。

一種替代 CDbCriteria 的方法是給 find 方法傳遞一個數組。 數組的鍵和值各自對應標準（criterion）的屬性名和值，上面的例子可以重寫為如下：

$post=Post::model()->find(array(
? ? 'select'=>'title',
? ? 'condition'=>'postID=:postID',
? ? 'params'=>array(':postID'=>10),
));



// 獲取滿足指定條件的行數
$n=Post::model()->count($condition,$params);
// 通過指定的 SQL 獲取結果行數
$n=Post::model()->countBySql($sql,$params);
// 檢查是否至少有一行復合指定的條件
$exists=Post::model()->exists($condition,$params);

直接更新數據表中的一行或多行而不首先載入也是可行的。 AR 提供了如下方便的類級別方法實現此目的：

// 更新符合指定條件的行
Post::model()->updateAll($attributes,$condition,$params);
// 更新符合指定條件和主鍵的行
Post::model()->updateByPk($pk,$attributes,$condition,$params);
// 更新滿足指定條件的行的計數列
Post::model()->updateCounters($counters,$condition,$params);
在上面的代碼中， $attributes 是一個含有以 列名作索引的列值的數組； $counters 是一個由列名索引的可增加的值的數組；$condition 和 $params 在前面的段落中已有描述。

如果一個 AR 實例被一行數據填充,我們也可以刪除此行數據。

$post=Post::model()->findByPk(10); // 假設有一個帖子，其 ID 為 10
$post->delete(); // 從數據表中刪除此行
注意，刪除之后， AR 實例仍然不變，但數據表中相應的行已經沒了。

使用下面的類級別代碼，可以無需首先加載行就可以刪除它。

// 刪除符合指定條件的行
Post::model()->deleteAll($condition,$params);
// 刪除符合指定條件和主鍵的行
Post::model()->deleteByPk($pk,$condition,$params);



當調用 save() 時， AR 會自動執行數據驗證。 驗證是基于在 AR 類的 rules() 方法中指定的規則進行的。 關于驗證規則的更多詳情，請參考 聲明驗證規則 一節。 下面是保存記錄時所需的典型的工作流。

if($post->save())
{
? ? // 數據有效且成功插入/更新
}
else
{
? ? // 數據無效，調用 ?getErrors() 提取錯誤信息
}
當要插入或更新的數據由最終用戶在一個 HTML 表單中提交時，我們需要將其賦給相應的 AR 屬性。 我們可以通過類似如下的方式實現：

$post->title=$_POST['title'];
$post->content=$_POST['content'];
$post->save();

如果有很多列，我們可以看到一個用于這種復制的很長的列表。 這可以通過使用如下所示的 attributes 屬性簡化操作。 更多信息可以在 安全的特性賦值 一節和 創建動作 一節找到。

// 假設 $_POST['Post'] 是一個以列名索引列值為值的數組
$post->attributes=$_POST['Post'];
$post->save();


CActiveRecord 提供了幾個占位符方法，它們可以在子類中被覆蓋以自定義其工作流。

beforeValidate 和
beforeSave 和 afterSave: 這兩個將在保存 AR 實例之前和之后被調用。
beforeDelete 和 afterDelete: 這兩個將在一個 AR 實例被刪除之前和之后被調用。
afterConstruct: 這個將在每個使用 new 操作符創建 AR 實例后被調用。
beforeFind: 這個將在一個 AR 查找器被用于執行查詢（例如 find(), findAll()）之前被調用。 1.0.9 版本開始可用。
afterFind: 這個將在每個 AR 實例作為一個查詢結果創建時被調用。

10. 使用 AR 處理事務?
每個 AR 實例都含有一個屬性名叫 dbConnection ，是一個 CDbConnection 的實例，這樣我們可以在需要時配合 AR 使用由 Yii DAO 提供的 事務 功能:

$model=Post::model();
$transaction=$model->dbConnection->beginTransaction();
try
{
? ? // 查找和保存是可能由另一個請求干預的兩個步驟
? ? // 這樣我們使用一個事務以確保其一致性和完整性
? ? $post=$model->findByPk(10);
? ? $post->title='new post title';
? ? $post->save();
? ? $transaction->commit();
}
catch(Exception $e)
{
? ? $transaction->rollBack();
}

$url=$this->createUrl($route,$params);
$this指的是控制器實例; $route指定請求的route 的要求;$params 列出了附加在網址中的GET參數。

默認情況下，URL以get格式使用createUrl 創建。例如，提供$route='post/read'和$params=array('id'=>100) ，我們將獲得以下網址：

/index.php?r=post/read&id=100

$user = Yii::app()->db->createCommand()->select('id, username, profile')->from('tbl_user u')->join('tbl_profile p', 'u.id=p.user_id')->where('id=:id', array(':id'=>$id))->queryRow();

$command = Yii::app()->db->createCommand('SELECT * FROM tbl_user');
$user = $command->queryRow();

$command = Yii::app()->db->createCommand();
$users = $command->select('*')->from('tbl_users')->queryAll();
$command->reset(); ?// clean up the previous query
$posts = $command->select('*')->from('tbl_posts')->queryAll();

// build and execute the following SQL:
// INSERT INTO `tbl_user` (`name`, `email`) VALUES (:name, :email)
$command->insert('tbl_user', array(
? ? 'name'=>'Tester',
? ? 'email'=>'tester@example.com',
));

// UPDATE `tbl_user` SET `name`=:name WHERE id=:id
$command->update('tbl_user', array(
? ? 'name'=>'Tester',
), 'id=:id', array(':id'=>1));

4. Building Schema Manipulation Queries?
Besides normal data retrieval and manipulation queries, the query builder also offers a set of methods for building and executing SQL queries that can manipulate the schema of a database. In particular, it supports the following queries:

createTable(): creates a table
renameTable(): renames a table
dropTable(): drops a table
truncateTable(): truncates a table
addColumn(): adds a table column
renameColumn(): renames a table column
alterColumn(): alters a table column
dropColumn(): drops a table column
createIndex(): creates an index
dropIndex(): drops an index

如果瀏覽器重定位到登錄頁面，而且登錄成功，我們將重定位瀏覽器到引起驗證失敗的頁面。我們怎么知道這個值呢？我們可以通過用戶部件的returnUrl 屬性獲得。我們因此可以用如下執行重定向：

Yii::app()->request->redirect(Yii::app()->user->returnUrl);




$this->preinit();
$this->init();

self::$classMap 可以在這里定義類的路徑，在autoload里調用

//頁面緩存控制器入口
可在main.php 中 ?設置catchAllRequest
$route=$this->catchAllRequest[0];

CModule 重載了 Ccomponent 的__get 方法

Yii::setApplication($this); 將app設置為了application對象

先注冊component,這時并沒有加載他們，只有在getcomponet時才加載。


?var menuId = $("ul.nav").first().attr("id");var request = $.ajax({ ?url: "script.php", ?type: "POST", ?data: {id : menuId}, ?dataType: "html"}); request.done(function(msg) { ?$("#log").html( msg );}); request.fail(function(jqXHR, textStatus) { ?alert( "Request failed: " + textStatus );});?

Example: Load and execute a JavaScript file.
?$.ajax({ ?type: "GET", ?url: "test.js", ?dataType: "script"});?

設置cookie
$cookie = new CHttpCookie('mycookie','this is my cookie');
$cookie->expire = time()+60*60*24*30; ?//有限期30天
Yii::app()->request->cookies['mycookie']=$cookie;
這里的cookies 繼承了CCookieCollection ，他是CMap類型,重寫了add等等，在add中設置了cookie.
比如$cookie = Yii::app()->request->cookies;
$cookies['name'] = $cookie;
復制
讀取cookie:
$cookie = Yii::app()->request->getCookies();
echo $cookie['mycookie']->value;
復制
銷毀cookie:
$cookie = Yii::app()->request->getCookies();
unset($cookie[$name]);

//異步提交
$('#g').click(function(){
$.post('index.php',$('form').serialize());
});?

//在控制器中都會先執行init 再執行beforeAction

過濾器
public function filterAccessAuth($filterChain) { ?
echo 'a';
$filterChain->run();
}

public function filterAbc($filterChain) { ?
$filterChain->run();
}
public function filters() { ?
? ? ? ? return array( ?
? ? ? ? ? ? 'accessAuth ?+ session', ?
'abc',
? ? ? ? ); ?
? ? }

Similar to .empty(), the .remove() method takes elements out of the DOM. Use .remove() when you want to remove the element itself, as well as everything inside it. In addition to the elements themselves, all bound events and jQuery data associated with the elements are removed. To remove the elements without removing data and events, use .detach() instead.

$.ajax({ ?url: "test.html", ?context: document.body}).done(function() { ?$(this).addClass("done");});

Deprecation Notice: The jqXHR.success(), jqXHR.error(), and jqXHR.complete() callbacks are deprecated as of jQuery 1.8. To prepare your code for their eventual removal, use jqXHR.done(), jqXHR.fail(), and jqXHR.always() instead.

原生js設置屬性
?this.style.color = "blue";
?js原生函數：decodeURIComponent()
最后為了更好的區分attribute和property，基本可以總結為attribute節點都是在HTML代碼中可見的，而property只是一個普通的名值對屬性。

　Yii中有個場景的概念，我們用到場景的地方主要是在model中定義rules規則的時候，可以對不同的場景使用不同的校驗規則，所以，自然而然會認為所謂的場景就是對應的action的名字。其實場景和action的名字是不同的概念來的，不能混為一談。scenario則是M的一種屬性，理論上，scenario是獨立于action概念的，可以在沒有action的場合下使用scenario。model的scenario是通過設置它的scenario屬性設置的，它和使用model的action沒有任何關系。

比如：

$model=new User;
$model->scenario = 'create';

和
$model=new User('create');

都是設置了執行一個action的時候對model進行校驗的場景

public function rules()
{
return array(
array('name','required'),
array('name', 'length', 'max'=>10,'min'=>5,'on'=>'a1 a2','except'=>'c1 c2'), on 用來設置場景，except用來排除場景
array('sex','required myvalitor'),
);
}

當model調用model->validate()時將加載rules中包含的類，每個涉及到的屬性都會被被判斷。

public function myvalitor($name,$params){}

$loginType = Yii::app()->controller->module->loginType;
Yii::app()->controller //當前請求的controller對象
Yii::app()->controller->module//當前請求的controller對象所屬的module

在main的 ?'params' => include(dirname(__FILE__) . '/params.php'),里設置一些其他信息。

$this->redirect() //控制器的方法
$this->createUrl() //控制器的方法


public function run()
{
if($this->hasEventHandler('onBeginRequest'))
$this->onBeginRequest(new CEvent($this));
$this->processRequest();
if($this->hasEventHandler('onEndRequest'))
$this->onEndRequest(new CEvent($this));
}

public function run($actionID)
{
if(($action=$this->createAction($actionID))!==null)
{
if(($parent=$this->getModule())===null)
$parent=Yii::app();
if($parent->beforeControllerAction($this,$action))
{
$this->runActionWithFilters($action,$this->filters());
$parent->afterControllerAction($this,$action);
}
}
else
$this->missingAction($actionID);
}


//yii 執行流程
獲取控制器，init，filters ，beforeAction，

filter 的循環
filter 鏈通過調用自身的run($this) 形成一個循環，循環結束條件為filter容器中的所有filter都執行完畢，如果一個filter沒有運行run，那么action將不會執行，這樣就實現了過濾作用。


public function filter($filterChain)
{
if($this->preFilter($filterChain))
{
$filterChain->run();
$this->postFilter($filterChain);
}
}
從上邊可以看出，以類實現的filter，將過濾函數一般寫在方法prefilter中

CActiveDataProvider provides data in terms of ActiveRecord objects which are of class modelClass. It uses the AR CActiveRecord::findAll method to retrieve the data from database. The criteria property can be used to specify various query options.?

$dataProvider=new CActiveDataProvider('Post', array(
? ? 'criteria'=>array(
? ? ? ? 'condition'=>'status=1',
? ? ? ? 'order'=>'create_time DESC',
? ? ? ? 'with'=>array('author'),
? ? ),
? ? 'pagination'=>array(
? ? ? ? 'pageSize'=>20,
? ? ),
));
// $dataProvider->getData() will return a list of Post objects

When data needs to be rendered in multiple pages, we can use CPagination to represent information such as total item count, page size, current page, etc. These information can be passed to pagers to render pagination buttons or links.?

Example:?

Controller action:
function actionIndex(){
? ? $criteria=new CDbCriteria();
? ? $count=Article::model()->count($criteria);
? ? $pages=new CPagination($count);

? ? // results per page
? ? $pages->pageSize=10;
? ? $pages->applyLimit($criteria);
? ? $models=Article::model()->findAll($criteria);

? ? $this->render('index', array(
? ? 'models' => $models,
? ? ? ? ?'pages' => $pages
? ? ));
}


View:
<?php foreach($models as $model): ?>
? ? // display a model
<?php endforeach; ?>

// display pagination
<?php $this->widget('CLinkPager', array(
? ? 'pages' => $pages,
)) ?>



/**
* Renders a view.
*
* The named view refers to a PHP script (resolved via {@link getViewFile})
* that is included by this method. If $data is an associative array,
* it will be extracted as PHP variables and made available to the script.
*
* This method differs from {@link render()} in that it does not
* apply a layout to the rendered result. It is thus mostly used
* in rendering a partial view, or an AJAX response.
*
* @param string $view name of the view to be rendered. See {@link getViewFile} for details
* about how the view script is resolved.
* @param array $data data to be extracted into PHP variables and made available to the view script
* @param boolean $return whether the rendering result should be returned instead of being displayed to end users
* @param boolean $processOutput whether the rendering result should be postprocessed using {@link processOutput}.
* @return string the rendering result. Null if the rendering result is not required.
* @throws CException if the view does not exist
* @see getViewFile
* @see processOutput
* @see render
*/
public function renderPartial($view,$data=null,$return=false,$processOutput=false)


/**
* Sends existing file to a browser as a download using x-sendfile.
*
* X-Sendfile is a feature allowing a web application to redirect the request for a file to the webserver
* that in turn processes the request, this way eliminating the need to perform tasks like reading the file
* and sending it to the user. When dealing with a lot of files (or very big files) this can lead to a great
* increase in performance as the web application is allowed to terminate earlier while the webserver is
* handling the request.
*
* The request is sent to the server through a special non-standard HTTP-header.
* When the web server encounters the presence of such header it will discard all output and send the file
* specified by that header using web server internals including all optimizations like caching-headers.
*
* As this header directive is non-standard different directives exists for different web servers applications:
* <ul>
* <li>Apache: {@link http://tn123.org/mod_xsendfile X-Sendfile}</li>
* <li>Lighttpd v1.4: {@link http://redmine.lighttpd.net/projects/lighttpd/wiki/X-LIGHTTPD-send-file X-LIGHTTPD-send-file}</li>
* <li>Lighttpd v1.5: {@link http://redmine.lighttpd.net/projects/lighttpd/wiki/X-LIGHTTPD-send-file X-Sendfile}</li>
* <li>Nginx: {@link http://wiki.nginx.org/XSendfile X-Accel-Redirect}</li>
* <li>Cherokee: {@link http://www.cherokee-project.com/doc/other_goodies.html#x-sendfile X-Sendfile and X-Accel-Redirect}</li>
* </ul>
* So for this method to work the X-SENDFILE option/module should be enabled by the web server and
* a proper xHeader should be sent.
*
* <b>Note:</b>
* This option allows to download files that are not under web folders, and even files that are otherwise protected (deny from all) like .htaccess
*
* <b>Side effects</b>:
* If this option is disabled by the web server, when this method is called a download configuration dialog
* will open but the downloaded file will have 0 bytes.
*
* <b>Known issues</b>:
* There is a Bug with Internet Explorer 6, 7 and 8 when X-SENDFILE is used over an SSL connection, it will show
* an error message like this: "Internet Explorer was not able to open this Internet site. The requested site is either unavailable or cannot be found.".
* You can work around this problem by removing the <code>Pragma</code>-header.
//需要加載這個模塊
LoadModule xsendfile_module modules/mod_xsendfile.so
XSendFile on
XSendFilePath D:/

* <b>Example</b>:
* <pre>
* <?php
* ? ?Yii::app()->request->xSendFile('/home/user/Pictures/picture1.jpg',array(
* ? ? ? ?'saveName'=>'image1.jpg',
* ? ? ? ?'mimeType'=>'image/jpeg',
* ? ? ? ?'terminate'=>false,
* ? ?));
* ?>
?

* </pre>
* @param string $filePath file name with full path
* @param array $options additional options:
* <ul>
* <li>saveName: file name shown to the user, if not set real file name will be used</li>
* <li>mimeType: mime type of the file, if not set it will be guessed automatically based on the file name, if set to null no content-type header will be sent.</li>
* <li>xHeader: appropriate x-sendfile header, defaults to "X-Sendfile"</li>
* <li>terminate: whether to terminate the current application after calling this method, defaults to true</li>
* <li>forceDownload: specifies whether the file will be downloaded or shown inline, defaults to true. (Since version 1.1.9.)</li>
* <li>addHeaders: an array of additional http headers in header-value pairs (available since version 1.1.10)</li>
* </ul>
*/
public function xSendFile($filePath, $options=array())



CAction is the base class for all controller action classes.?
CAction provides a way to divide a complex controller into smaller actions in separate class files.?
Derived classes must implement run() which is invoked by controller when the action is requested.

?
CViewAction represents an action that displays a view according to a user-specified parameter.
By default, the view being displayed is specified via the view GET parameter. The name of the GET parameter can be customized via viewParam. If the user doesn't provide the GET parameter, the default view specified by defaultView will be displayed.?
Users specify a view in the format of path.to.view, which translates to the view name BasePath/path/to/view where BasePath is given by basePath.?

CForm represents a form object that contains form input specifications.

The main purpose of introducing the abstraction of form objects is to enhance the reusability of forms. In particular, we can divide a form in two parts: those that specify each individual form inputs, and those that decorate the form inputs. A CForm object represents the former part. It relies on the rendering process to accomplish form input decoration. Reusability is mainly achieved in the rendering process. That is, a rendering process can be reused to render different CForm objects.?

A form can be rendered in different ways. One can call the render method to get a quick form rendering without writing any HTML code; one can also override render to render the form in a different layout; and one can use an external view template to render each form element explicitly. In these ways, the render method can be applied to all kinds of forms and thus achieves maximum reusability; while the external view template keeps maximum flexibility in rendering complex forms.?

Form input specifications are organized in terms of a form element hierarchy. At the root of the hierarchy, it is the root CForm object. The root form object maintains its children in two collections: elements and buttons. The former contains non-button form elements (CFormStringElement, CFormInputElement and CForm); while the latter mainly contains button elements (CFormButtonElement). When a CForm object is embedded in the elements collection, it is called a sub-form which can have its own elements and buttons collections and thus form the whole form hierarchy.?

Sub-forms are mainly used to handle multiple models. For example, in a user registration form, we can have the root form to collect input for the user table while a sub-form to collect input for the profile table. Sub-form is also a good way to partition a lengthy form into shorter ones, even though all inputs may belong to the same model.?


$components=array(
'coreMessages'=>array(
'class'=>'CPhpMessageSource',
'language'=>'en_us',
'basePath'=>YII_PATH.DIRECTORY_SEPARATOR.'messages',
),
'db'=>array(
'class'=>'CDbConnection',
),
'messages'=>array(
'class'=>'CPhpMessageSource',
),
'errorHandler'=>array(
'class'=>'CErrorHandler',
),
'securityManager'=>array(
'class'=>'CSecurityManager',
),
'statePersister'=>array(
'class'=>'CStatePersister',
),
'urlManager'=>array(
'class'=>'CUrlManager',
),
'request'=>array(
'class'=>'CHttpRequest',
),
'format'=>array(
'class'=>'CFormatter',
),
)

$components=array(
'session'=>array(
'class'=>'CHttpSession',
),
'assetManager'=>array(?
'class'=>'CAssetManager',
),
'user'=>array(
'class'=>'CWebUser',
),
'themeManager'=>array(
'class'=>'CThemeManager',
),
'authManager'=>array(
'class'=>'CPhpAuthManager',
),
'clientScript'=>array(
'class'=>'CClientScript',
),
'widgetFactory'=>array(
'class'=>'CWidgetFactory',
),
);

<script>
jQuery.validator.addMethod('username',function(value, element, param) {
return false;
},'ni {0} ming zhi shu cuo le');

jQuery.validator.addMethod('cardNum',function(value,element,param){
return CardNumber.check(value,true);
},'請輸入正確的身份證號碼');

$('form').validate({
? keyup:false,
? ? ? ? rules: {
username : {
cardNum : true
}
}
})
</script>


jQuery.validator.addMethod('anoy',function(value,element,func){
return func;
});


$('form').validate({
rules:{
pass1 : {
anoy : function(){ console.log(arguments);return false;}
}
}
});

$(element).parentsUntil('table').find('input[name="pass2"]').val();

jQuery.validator.addClassRules('pas', {
? ? ? ? pass1: true?
? ? });


jQuery.validator.addMethod('username',function(value, element, param) {
return false;
},'ni {0} ming zhi shu cuo le');

jQuery.validator.addMethod('cardNum',function(value,element,param){
return CardNumber.check(value,true);
},'請輸入正確的身份證號碼');

jQuery.validator.addMethod('pass1',function(value,element,param){
return value == $(element).parentsUntil('table').find('input[name="pass2"]').val();
},'error');

jQuery.validator.addClassRules('pas', {
? ? ? ? pass1: true?
? ? });
$('form').validate({
rules:{
'pass1' : {
pass1 : true
}
}
});
if($(':input[name="isWrite"][checked]').val() == 1 )

A typical authentication process using CWebUser is as follows:
The user provides information needed for authentication.
An {@link IUserIdentity identity instance} is created with the user-provided information.
Call {@link IUserIdentity::authenticate} to check if the identity is valid.
If valid, call {@link CWebUser::login} to login the user, and Redirect the user browser to {@link returnUrl}.
If not valid, retrieve the error code or message from the identity instance and display it.


Yii::app()->user->setFlash('success', "Data1 saved!");
Yii::app()->user->setFlash('error', "Data2 failed!");
Yii::app()->user->setFlash('notice', "Data3 ignored.");
Display them in your view:

<?php
? ? foreach(Yii::app()->user->getFlashes() as $key => $message) {
? ? ? ? echo '<div class="flash-' . $key . '">' . $message . "</div>\n";
? ? }
?>
Setting flash messages?
A flash message is used in order to keep a message in session through one or several requests of the same user. By default, it is removed from session after it has been displayed to the user. Flash messages are usually used in combination with HTTP redirections, because in this case there is no view, so messages can only be displayed in the request that follows redirection.

www.ixuesi.com


CWebUser 和 CUserIdentity 的關系
CUserIdentity 通過用戶名和密碼驗證用戶，獲取用戶id，CWebUser可根據Id獲取用戶信息，保存在session中。
也可在CUserIdentity中獲取信息到stats中，然后傳遞到CWebUser中

CAccessControlFilter 內部也是通過調用user->checkAccess()來判斷權限
user里邊通過CauthManager來提供checkAccess()方法。
可以利用filter 和 User->checkAccess()來使用yii的權限系統。當然也可以直接調用AuthManager來使用，這時需要手動傳遞User了。

可以再model的自定義rule中使用addError($attribute,$value)來添加一個錯誤，必須使用adderror，返回false是不起作用的。

keepalive="true": To conserve battery power and cpu usage, Paper.js normally stops all animation events when the window is not focused. If you want it to keep playing animations, even if the window is in the background, set keepalive="true" in your canvas tag. And again for validation, data-paper-keepalive="true" works as well.

CController中已經定義了三個filter:filterAccessControl,filterAjaxOnly,filterPostOnly,filterAccessControl需要和accessRules配合使用，
public function filterAccessControl($filterChain)
{
$filter=new CAccessControlFilter;
$filter->setRules($this->accessRules());
$filter->filter($filterChain);
}
public function filters()
? ? {
? ? ? ? return array(
? ? ? ? ? ? 'accessControl',
? ? ? ? );
? ? }
public function accessRules()
? ? {
? ? ? ? return array(
? ? ? ? ? ? array('deny',
? ? ? ? ? ? ? ? 'actions'=>array('create', 'edit'),
? ? ? ? ? ? ? ? 'users'=>array('?'),
? ? ? ? ? ? ),
? ? ? ? ? ? array('allow',
? ? ? ? ? ? ? ? 'actions'=>array('delete'),
? ? ? ? ? ? ? ? 'roles'=>array('admin'),
? ? ? ? ? ? ),
? ? ? ? ? ? array('deny',
? ? ? ? ? ? ? ? 'actions'=>array('delete'),
? ? ? ? ? ? ? ? 'users'=>array('*'),
? ? ? ? ? ? ),
? ? ? ? );
? ? }

Yii::import（）注冊一個類路徑

module里的一個函數?
public function init()
{
$this->setImport(array(
'application.modules.user.models.*',
'application.modules.user.components.*',
));
}

public function filters() { ?
return array( ?
'accessControl', //本地函數一個簡單的字符串，外部類要寫在數組中
array(
'COutputCache + list',
'duration'=>300,
),
); ?
}

總結

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