


The URL path using the Yii framework is generally in the form of hostname/?r=xxxx/xxxx/xxxx&sdfs=dsfdsf
We can see that sometimes the controller in the protected directory is used, and sometimes the controller in the module is used. How to deal with it specifically? Please Look at the following analysis:
The following code is excerpted from the yii framework core code %Yiiroot%/framework/web/CWebApplication.php
Copy the code The code is as follows:
============ ================================================== ===================================
//1.runController is a method to execute a controller, $route It is $_GET['r']
public function runController($route)
{
//Call createController here to create a controller instance first. It can be seen that createController is the key to selecting the controller
if(($ca=$this ->createController($route))!==null)
{
list($controller,$actionID)=$ca;
$oldC
$this->_c
$controller->init();
$controller->run($actionID);
$this->_c
}
else
throw new CHttpException(404,Yii::t('yii','Unable to resolve the request "{route}". ',
array('{route}'=>$route===''?$this->defaultController:$route)));
}
============= ================================================== ===================================
//2. Next we analyze createController, assuming we access route is site/contact
public function createController($route,$owner=null)
{
//When entering this function for the first time, the $owner parameter is empty
if($owner===null)
$owner=$this;
//If the $route parameter does not contain /, then use the default controller
if(($route=trim($route,'/'))==='')
$route=$owner->defaultController ;
$caseSensitive=$this->getUrlManager()->caseSensitive;
//In order to run the following loop completely, add a / after $route
$route.='/';
//Replace / The location is saved in $pos
while(($pos=strpos($route,'/'))!==false)
{
//$id is the first half, that is, site
$id=substr($route ,0,$pos);
if(!preg_match('/^w+$/',$id))
return null;
if(!$caseSensitive)
$id=strtolower($id);
//$ route becomes the second half, that is, contact
$route=(string)substr($route,$pos+1);
//Controller root directory or subdirectory prefix
if(!isset($basePath)) // first segment
{
//The first time you enter, $owner is empty, there is no such member variable
//It is not the first time you enter or $owner has a value, this member variable may be set, see CWebModule class
if(isset($owner-> ;controllerMap[$id]))
{
return array(
Yii::createComponent($owner->controllerMap[$id],$id,$owner===$this?null:$owner),
$ this->parseActionParams($route),
);
}
//If an independent module can be obtained through the getModule method, call createController again. This applies to the case where site is the module name. Please refer to protected/config/main. PHP configuration file, for example, your controller is in %webroot%/protected/module/site/controller/ContactController.php
if(($module=$owner->getModule($id))!==null)
return $ this->createController($route,$module);
//Directory of controller:
//For CWebApplication, corresponds to config['basePath'] (see configuration file)./controller/, for example, your controller is in %webroot %/protected/controller/SiteController.php
//For the subclass of CModule, change the folder where the subclass is located./contoller/, for example, your controller is in %webroot%/protected/module/site/controller/ContactController.php
$basePath=$owner->getControllerPath();
$c/';
$className=ucfirst($id).'Controller';
$classFile=$basePath.DIRECTORY_SEPARATOR.$className.'.php';
//If $classFile exists, create a class instance based on the controller class file path obtained above
//If it does not exist, it is the controller in the subdirectory, and continue to loop to find the final controller. For example, your controller is in %webroot %/protected/controller/somedir/SiteController
if(is_file($classFile))
{
if(!class_exists($className,false))
require($classFile);
if(class_exists($className,false) && is_subclass_of($className,'CController'))
{
$id[0]=strtolower($id[0]);
return array(
new $className($controllerID.$id,$owner===$this ?null:$owner),
$this->parseActionParams($route),
);
}
return null;
}
$controllerID.=$id;
$basePath.=DIRECTORY_SEPARATOR.$id;
}
}
The above introduces the controller yii framework source code analysis and creation of controller code, including controller aspects. I hope it will be helpful to friends who are interested in PHP tutorials.

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