refactored application.

framework/base/Application.php

@@ -113,29 +113,27 @@ class Application extends Module
 		if (isset($config['basePath'])) {
 			$this->setBasePath($config['basePath']);
 			unset($config['basePath']);
+			Yii::$aliases['@app'] = $this->getBasePath();
 		} else {
 			throw new InvalidConfigException('The "basePath" configuration is required.');
 		}
 
-		if (YII_ENABLE_ERROR_HANDLER) {
-			ini_set('display_errors', 0);
-			set_exception_handler(array($this, 'handleException'));
-			set_error_handler(array($this, 'handleError'), error_reporting());
-		}
-
-		$this->registerDefaultAliases();
+		$this->registerErrorHandlers();
 		$this->registerCoreComponents();
 
-		Component::__construct($config);
+		parent::__construct($config);
 	}
 
 	/**
-	 * Initializes the application by loading components declared in [[preload]].
-	 * If you override this method, make sure the parent implementation is invoked.
+	 * Registers error handlers.
 	 */
-	public function init()
+	public function registerErrorHandlers()
 	{
-		$this->preloadComponents();
+		if (YII_ENABLE_ERROR_HANDLER) {
+			ini_set('display_errors', 0);
+			set_exception_handler(array($this, 'handleException'));
+			set_error_handler(array($this, 'handleError'), error_reporting());
+		}
 	}
 
 	/**
@@ -339,14 +337,6 @@ class Application extends Module
 	}
 
 	/**
-	 * Sets default path aliases.
-	 */
-	public function registerDefaultAliases()
-	{
-		Yii::$aliases['@app'] = $this->getBasePath();
-	}
-
-	/**
 	 * Registers the core application components.
 	 * @see setComponents
 	 */

framework/base/Module.php

@@ -170,7 +170,6 @@ abstract class Module extends Component
 	 */
 	public function init()
 	{
-		Yii::setAlias('@' . $this->id, $this->getBasePath());
 		$this->preloadComponents();
 	}
 

framework/web/Application.php

@@ -23,21 +23,15 @@ class Application extends \yii\base\Application
 	public $defaultRoute = 'site';
 
 	/**
-	 * Sets default path aliases.
-	 */
-	public function registerDefaultAliases()
-	{
-		parent::registerDefaultAliases();
-		Yii::$aliases['@webroot'] = dirname($_SERVER['SCRIPT_FILENAME']);
-	}
-
-	/**
 	 * Processes the request.
 	 * @return integer the exit status of the controller action (0 means normal, non-zero values mean abnormal)
 	 */
 	public function processRequest()
 	{
-		list ($route, $params) = $this->getRequest()->resolve();
+		$request = $this->getRequest();
+		Yii::setAlias('@wwwroot', dirname($request->getScriptFile()));
+		Yii::setAlias('@www', $request->getBaseUrl());
+		list ($route, $params) = $request->resolve();
 		return $this->runAction($route, $params);
 	}
 

framework/web/Request.php

@@ -43,8 +43,6 @@ class Request extends \yii\base\Request
 	 */
 	public function resolve()
 	{
-		Yii::setAlias('@www', $this->getBaseUrl());
-
 		$result = Yii::$app->getUrlManager()->parseRequest($this);
 		if ($result !== false) {
 			list ($route, $params) = $result;
@@ -301,7 +299,8 @@ class Request extends \yii\base\Request
 	public function getScriptUrl()
 	{
 		if ($this->_scriptUrl === null) {
-			$scriptName = basename($_SERVER['SCRIPT_FILENAME']);
+			$scriptFile = $this->getScriptFile();
+			$scriptName = basename($scriptFile);
 			if (basename($_SERVER['SCRIPT_NAME']) === $scriptName) {
 				$this->_scriptUrl = $_SERVER['SCRIPT_NAME'];
 			} elseif (basename($_SERVER['PHP_SELF']) === $scriptName) {
@@ -310,8 +309,8 @@ class Request extends \yii\base\Request
 				$this->_scriptUrl = $_SERVER['ORIG_SCRIPT_NAME'];
 			} elseif (($pos = strpos($_SERVER['PHP_SELF'], '/' . $scriptName)) !== false) {
 				$this->_scriptUrl = substr($_SERVER['SCRIPT_NAME'], 0, $pos) . '/' . $scriptName;
-			} elseif (isset($_SERVER['DOCUMENT_ROOT']) && strpos($_SERVER['SCRIPT_FILENAME'], $_SERVER['DOCUMENT_ROOT']) === 0) {
-				$this->_scriptUrl = str_replace('\\', '/', str_replace($_SERVER['DOCUMENT_ROOT'], '', $_SERVER['SCRIPT_FILENAME']));
+			} elseif (isset($_SERVER['DOCUMENT_ROOT']) && strpos($scriptFile, $_SERVER['DOCUMENT_ROOT']) === 0) {
+				$this->_scriptUrl = str_replace('\\', '/', str_replace($_SERVER['DOCUMENT_ROOT'], '', $scriptFile));
 			} else {
 				throw new InvalidConfigException('Unable to determine the entry script URL.');
 			}
@@ -330,6 +329,30 @@ class Request extends \yii\base\Request
 		$this->_scriptUrl = '/' . trim($value, '/');
 	}
 
+	private $_scriptFile;
+
+	/**
+	 * Returns the entry script file path.
+	 * The default implementation will simply return `$_SERVER['SCRIPT_FILENAME']`.
+	 * @return string the entry script file path
+	 */
+	public function getScriptFile()
+	{
+		return isset($this->_scriptFile) ? $this->_scriptFile : $_SERVER['SCRIPT_FILENAME'];
+	}
+
+	/**
+	 * Sets the entry script file path.
+	 * The entry script file path normally can be obtained from `$_SERVER['SCRIPT_FILENAME']`.
+	 * If your server configuration does not return the correct value, you may configure
+	 * this property to make it right.
+	 * @param string $value the entry script file path.
+	 */
+	public function setScriptFile($value)
+	{
+		$this->_scriptFile = $value;
+	}
+
 	private $_pathInfo;
 
 	/**