yiiソース分析3

72192 ワード

転載は明記してください:The Viper http://www.cnblogs.com/TheViper/
前の章 CWebAppleicationの¥route=>get UrlManager->parseUrl($this->get Request();$route=controller/actiondを得る。
これは彼の後ろの$this->run Controller($route)です。
 1 <?php
 2 class CWebApplication extends CApplication {
 3     public $controllerNamespace;
 4     private $_controllerPath;
 5     private $_viewPath;
 6     private $_systemViewPath;
 7     private $_controller;
 8     public $controllerMap=array();
 9     public function processRequest() {//      
10         //  urlManager  ,    ,  controller/action     string,
11         //                 ,    ,  $_REQUEST 
12         $route = $this->getUrlManager ()->parseUrl ($this->getRequest());
13         $this->runController ( $route );
14     }
15     public function getRequest() {//  request  
16         return $this->getComponent ( 'request' );
17     }
18     protected function registerCoreComponents() {//      
19         parent::registerCoreComponents ();
20     }
21     //  contronller
22     public function runController($route) {
23         if (($ca = $this->createController ( $route )) !== null) {
24             list ( $controller, $actionID ) = $ca;
25             $oldController = $this->_controller;
26             $this->_controller = $controller;
27             $controller->init ();//  ,   action     ,     
28             $controller->run ( $actionID );//    controller  action     
29             $this->_controller = $oldController;
30         }
31     }
32     //  controller   , controller/action     string    $controller, $actionID 
33     public function createController($route, $owner = null) {
34         if ($owner === null)
35             $owner = $this;
36         if (($route = trim ( $route, '/' )) === '')
37             $route = $owner->defaultController;
38 
39         $route .= '/';
40         while ( ($pos = strpos ( $route, '/' )) !== false ) {
41             $id = substr ( $route, 0, $pos );
42             if (! preg_match ( '/^\w+$/', $id ))
43                 return null;
44             $id = strtolower ( $id );
45             $route = ( string ) substr ( $route, $pos + 1 );
46             if (! isset ( $basePath ))             // first segment
47             {
48                 $basePath = $owner->getControllerPath ();
49                 $controllerID = '';
50             } else {
51                 $controllerID .= '/';
52             }
53             $className = ucfirst ( $id ) . 'Controller';
54             $classFile = $basePath . DIRECTORY_SEPARATOR . $className . '.php';
55 
56             if (is_file ( $classFile )) {
57                 if (! class_exists ( $className, false ))
58                     require ($classFile);
59                 if (class_exists ( $className, false ) && is_subclass_of ( $className, 'CController' )) {
60                     $id [0] = strtolower ( $id [0] );
61                     return array (
62                             new $className ( $controllerID . $id, $owner === $this ? null : $owner ),
63                             $this->parseActionParams ( $route )
64                     );
65                 }
66                 return null;
67             }
68             $controllerID .= $id;
69             $basePath .= DIRECTORY_SEPARATOR . $id;
70         }
71     }
72     protected function parseActionParams($pathInfo) {
73         if (($pos = strpos ( $pathInfo, '/' )) !== false) {
74             $manager = $this->getUrlManager ();//    urlManager,             。
75             $manager->parsePathInfo ( ( string ) substr ( $pathInfo, $pos + 1 ) );
76             $actionID = substr ( $pathInfo, 0, $pos );
77             return $manager->caseSensitive ? $actionID : strtolower ( $actionID );
78         } else
79             return $pathInfo;
80     }
81     public function getControllerPath() {
82         if ($this->_controllerPath !== null)
83             return $this->_controllerPath;
84         else
85             return $this->_controllerPath = $this->getBasePath () . DIRECTORY_SEPARATOR . 'controllers';
86     }
87     //    ,     
88     public function beforeControllerAction($controller, $action) {
89         return true;
90     }
91     public function afterControllerAction($controller, $action) {
92     }
93     protected function init() {
94         parent::init ();
95     }
96 }
$ca=$this->createController($route);createControllerの役割は、$routeのcontrollerとactionを分離し、controllerのインスタンスを作成することです。
最後にcontrollerの例とactiondを返します。
その後CWebAppleicationのrunController($route)に戻ります。controler初期化時に実行します。これはサブクラスで書き換える必要があります。
 1 class VideoController extends CController {
 2     public function init() {
 3         $this->db = Yii::app ()->db;
 4     }
 5     public function actionBroadcast() {
 6         $b = $this->db->query ( "", array (1 ) );
 7         $this->render ( "u_broadcast", array (
 8         'b' => $b [0] ;
 9     ) );
10     }
11 }    
このようにVideo Controllerでは$this->dbでdbコンポーネントを呼び出すことができます。
$controller->run($actionID);Ccontrollerに移行する
 1 <?php
 2 class CController {
 3     protected $db;
 4     public $defaultAction = 'index';
 5     private $_id;
 6     private $_action;
 7     public function __construct($id, $module = null) {
 8         $this->_id = $id;
 9     }
10     public function init() {
11     }
12     //    ,    
13     public function filters() {
14         return array ();
15     }
16     public function run($actionID) {
17         //  action  
18         if (($action = $this->createAction ( $actionID )) !== null) {
19             $parent = Yii::app ();
20             if ($parent->beforeControllerAction ( $this, $action )) {
21                 $this->runActionWithFilters ( $action, $this->filters () );
22                 $parent->afterControllerAction ( $this, $action );
23             }
24         }
25     }
26     public function refresh($terminate = true, $anchor = '') {
27         $this->redirect ( Yii::app ()->getRequest ()->getUrl () . $anchor, $terminate );
28     }
29     public function redirect($url, $terminate = true, $statusCode = 302) {
30         Yii::app ()->getRequest ()->redirect ( $url, $terminate, $statusCode );
31     }
32     //  controller   filter
33     public function runActionWithFilters($action, $filters) {
34         if (empty ( $filters ))
35             $this->runAction ( $action );
36         else {
37             $priorAction = $this->_action;
38             $this->_action = $action;
39             CFilterChain::create ( $this, $action, $filters )->run ();
40             $this->_action = $priorAction;
41         }
42     }
43     public function runAction($action) {
44         $priorAction = $this->_action;
45         $this->_action = $action;
46         if ($this->beforeAction ( $action )) {
47             if ($action->runWithParams ( $this->getActionParams () ) === false)
48                 $this->invalidActionParams ( $action );
49             else
50                 $this->afterAction ( $action );
51         }
52         $this->_action = $priorAction;
53     }
54     //    
55     public function render($view, $data = array()) {
56         if (isset ( $data ))
57             extract ( $data );
58         include VIEWS_DIR . "/" . $this->_id . "/" . $view . ".php";
59     }
60     public function renderFile($file, $data = array()) {
61         if (isset ( $data ))
62             extract ( $data );
63         include VIEWS_DIR . "/" . $file;
64     }
65     //      controller/action,           
66     public function forward($route) {
67         if (strpos ( $route, '/' ) === false)
68             $this->run ( $route );
69         else {
70             //     controller  ,    
71             Yii::app ()->runController ( $route );
72         }
73     }
74     public function getActionParams() {
75         return $_GET;
76     }
77     public function createAction($actionID) {
78         if ($actionID === '')
79             $actionID = $this->defaultAction;
80         if (method_exists ( $this, 'action' . $actionID ) && strcasecmp ( $actionID, 's' ))
81             return new CInlineAction ( $this, $actionID );
82     }
83     public function getAction() {
84         return $this->_action;
85     }
86     public function setAction($value) {
87         $this->_action = $value;
88     }
89     public function getId() {
90         return $this->_id;
91     }
92     //    
93     protected function beforeAction($action) {
94         return true;
95     }
96     protected function afterAction($action) {
97     }
98 }
$this->createAction($actionID);actionのインスタンスを作成します
それからrunAction WithFilters($action、$filters)です。filterがなければ、直接runAction($action)です。
$action->run WithParaams($this->getAct Paract().actionはCInline Actionの例である。
 1 <?php
 2 class CInlineAction extends CAction
 3 {
 4     //     
 5     public function run()
 6     {
 7         $method='action'.$this->getId();
 8         $this->getController()->$method();
 9     }
10     //              
11     public function runWithParams($params)
12     {
13         $methodName='action'.$this->getId();//  action  
14         $controller=$this->getController();
15         $method=new ReflectionMethod($controller, $methodName);//  
16         if($method->getNumberOfParameters()>0)//      >0
17             return $this->runWithParamsInternal($controller, $method, $params);
18         else
19             return $controller->$methodName();
20     }
21 }
アクション
 1 <?php
 2 abstract class CAction extends CComponent
 3 {
 4     private $_id;
 5     private $_controller;
 6     public function __construct($controller,$id)
 7     {
 8         $this->_controller=$controller;
 9         $this->_id=$id;
10     }
11     public function getController()
12     {
13         return $this->_controller;
14     }
15     public function getId()
16     {
17         return $this->_id;
18     }
19     //           。       CController::runAction()    
20     public function runWithParams($params)
21     {
22         $method=new ReflectionMethod($this, 'run');
23         if($method->getNumberOfParameters()>0)
24             return $this->runWithParamsInternal($this, $method, $params);
25         else
26             return $this->run();
27     }
28     //                
29     protected function runWithParamsInternal($object, $method, $params)
30     {
31         $ps=array();
32         foreach($method->getParameters() as $i=>$param)
33         {
34             $name=$param->getName();
35             if(isset($params[$name]))
36             {
37                 if($param->isArray())
38                     $ps[]=is_array($params[$name]) ? $params[$name] : array($params[$name]);
39                 elseif(!is_array($params[$name]))
40                 $ps[]=$params[$name];
41                 else
42                     return false;
43             }
44             elseif($param->isDefaultValueAvailable())
45             $ps[]=$param->getDefaultValue();
46             else
47                 return false;
48         }
49         $method->invokeArgs($object,$ps);//
50         return true;
51     }
52 }
これらの2つのカテゴリーは非常に簡単です。つまり、controllerクラスのaction方法を実行します。
上のrunAction WithFilters($action、$filters)に戻ります。ファイトがあれば、CFilterCharin:create($this、$filters)->run();
明らかに、filterがあるとactionメソッドを実行する前に、filterフィルタリストを設定しなければなりません。
CFilterCharinは'appration.filters.Loging Filter+uplad_video'という構成はフィルタチェーンに解析されます。
フィルタチェーンの各項目はCInline FilterまたはCFilterの例である。
 
 1 <?php
 2 //     
 3 class CFilterChain extends CList {
 4     public $controller;
 5     public $action;
 6     public $filterIndex = 0;
 7     public function __construct($controller, $action) {
 8         $this->controller = $controller;
 9         $this->action = $action;
10     }
11     //       
12     public static function create($controller, $action, $filters) {
13         $chain = new CFilterChain ( $controller, $action );
14         $actionID = $action->getId ();
15         foreach ( $filters as $filter ) {
16             if (is_string ( $filter ))             // filterName [+|- action1 action2]
17             {
18                 if (($pos = strpos ( $filter, '+' )) !== false || ($pos = strpos ( $filter, '-' )) !== false) {
19                     $matched = preg_match ( "/\b{$actionID}\b/i", substr ( $filter, $pos + 1 ) ) > 0;
20                     if (($filter [$pos] === '+') === $matched)
21                         $filter = CInlineFilter::create ( $controller, trim ( substr ( $filter, 0, $pos ) ) );
22                 } else
23                     $filter = CInlineFilter::create ( $controller, $filter );
24             } elseif (is_array ( $filter ))             // array('path.to.class [+|- action1, action2]','param1'=>'value1',...)
25             {
26                 $filterClass = $filter [0];
27                 unset ( $filter [0] );
28                 //         
29                 if (($pos = strpos ( $filterClass, '+' )) !== false || ($pos = strpos ( $filterClass, '-' )) !== false) {
30                     preg_match ( "/\b{$actionID}\b/i", substr ( $filterClass, $pos + 1 ), $a );
31                     $matched = preg_match ( "/\b{$actionID}\b/i", substr ( $filterClass, $pos + 1 ) ) > 0;
32                     //   filterName+action,       ,    
33                     if (($filterClass [$pos] === '+') === $matched) {
34                         //         
35                         $filterClass = trim ( substr ( $filterClass, 0, $pos ) );
36                     } else
37                         continue;
38                 }
39                 $filter ['class'] = $filterClass;
40                 $filter = Yii::createComponent ( $filter );
41             }
42             
43             if (is_object ( $filter )) {
44                 $filter->init ();
45                 $chain->add ( $filter );//list     
46             }
47         }
48         return $chain;
49     }
50     public function run() {
51         if ($this->offsetExists ( $this->filterIndex )) {//         0
52             //       
53             $filter = $this->itemAt ( $this->filterIndex ++ );
54             $filter->filter ( $this );
55         } else
56             $this->controller->runAction ( $this->action );
57     }
58 }
'appication.filters.Loging Filter+uplad_video'という構成はCFilterのインスタンスを作成します。
 1 <?php
 2 class CFilter extends CComponent {
 3     public function filter($filterChain) {
 4         //
 5         if ($this->preFilter ( $filterChain )) {
 6             $filterChain->run ();
 7             $this->postFilter ( $filterChain );
 8         }
 9     }
10     //  
11     public function init() {
12     }
13     protected function preFilter($filterChain) {
14         return true;
15     }
16     protected function postFilter($filterChain) {
17     }
18 }
そして上のCFilterCharin::create($this、$action、$filters)->run();のrun()は、リクエストが解析されたactionであればuplad(u)です。video,yiiはLoging Filterの例を取り出します。
例えば私のLoging Filter
 1 <?php
 2 class LoginFilter extends CFilter {
 3     protected function preFilter($filterChain) {
 4         if (! isset ( $_SESSION )) {
 5             session_start ();
 6         }
 7         if (isset ( $_SESSION ['user'] ))
 8             return true;
 9         else {
10             setcookie ( "return", Yii::app ()->getRequest ()->getUrl (), time () + 360, '/' );
11             Yii::app ()->getRequest ()->redirect ( 'http://localhost/youtube/login', true, 302 );
12             return false;
13         }
14     }
15     protected function postFilter($filterChain) {
16     }
17 }
18 ?>
中は一つの前置と後置について、フィルタを有効にする必要があるaction方法について、それぞれaction方法を実行する前と後で自分で定義したpreFilter、postFilter方法を実行することを表しています。
それから$filterCharin->runです。ここは間違いやすいです。
実は再度CFilterCharinの中のrun()を使って、中の$this->filterIndex++を注意して、これは少し再帰するようです。
フィルタがactionをフィルタするなら、このようにCFilterに行って、その後$filterCharin->run();CFilterCharinを返し、同時に$this->filterIndex++を返して、その後$filterCharin->run();。。。
私の'appication.filters.Loging Filter+uplad_video'は、フィルタリングのみです。Videoというactionは、CFilterCharinに戻ると、$this->filterIndexは1になりましたが、フィルタリストはフィルタの一例しかないので、今回は$this->controller->runAction($this->action);フィルタをセットしていない時に歩く$this->runアクションです。同じです
フィルターの分析が終わったら、何のデータ操作かなど、最後はレンダリング表示レンダーです。これは簡単すぎます。extract($data)はincludeの下でファイルを見ればいいです。
forward()の方法があって、別のcontroller/actionにジャンプして、本質はCWebApple plicationのrunControllerに帰って更に上の分析の過程に来ます。
最後に添付します。裁断のyii  http://files.cnblogs.com/TheViper/framework.zip