standardize the use of unix eol; use svn properties to enforce native eol

10 files changed, 455 insertions, 455 deletions

diff --git a/demos/blog-tutorial/samples/day4/blog/protected/pages/Contact.php b/demos/blog-tutorial/samples/day4/blog/protected/pages/Contact.php
index b6ce575e..77d7374a 100644
--- a/demos/blog-tutorial/samples/day4/blog/protected/pages/Contact.php
+++ b/demos/blog-tutorial/samples/day4/blog/protected/pages/Contact.php
@@ -1,30 +1,30 @@
-<?php

-

-class Contact extends TPage

-{

-	/**

-	 * Event handler for the OnClick event of the submit button.

-	 * @param TButton the button triggering the event

-	 * @param TEventParameter event parameter (null here)

-	 */

-	public function submitButtonClicked($sender, $param)

-	{

-		if ($this->IsValid)  // check if input validation is successful

-		{

-			// obtain the user name, email, feedback from the textboxes

-			$name = $this->Name->Text;

-			$email = $this->Email->Text;

-			$feedback = $this->Feedback->Text;

-

-			// send an email to administrator with the above information

-			$this->mailFeedback($name, $email, $feedback);

-		}

-	}

-

-	protected function mailFeedback($name, $email, $feedback)

-	{

-		// implementation of sending the feedback email

-	}

-}

-

+<?php
+
+class Contact extends TPage
+{
+	/**
+	 * Event handler for the OnClick event of the submit button.
+	 * @param TButton the button triggering the event
+	 * @param TEventParameter event parameter (null here)
+	 */
+	public function submitButtonClicked($sender, $param)
+	{
+		if ($this->IsValid)  // check if input validation is successful
+		{
+			// obtain the user name, email, feedback from the textboxes
+			$name = $this->Name->Text;
+			$email = $this->Email->Text;
+			$feedback = $this->Feedback->Text;
+
+			// send an email to administrator with the above information
+			$this->mailFeedback($name, $email, $feedback);
+		}
+	}
+
+	protected function mailFeedback($name, $email, $feedback)
+	{
+		// implementation of sending the feedback email
+	}
+}
+
 ?>
\ No newline at end of file
diff --git a/demos/blog-tutorial/samples/day4/blog/protected/pages/posts/EditPost.php b/demos/blog-tutorial/samples/day4/blog/protected/pages/posts/EditPost.php
index e137b85e..1b0f82b6 100644
--- a/demos/blog-tutorial/samples/day4/blog/protected/pages/posts/EditPost.php
+++ b/demos/blog-tutorial/samples/day4/blog/protected/pages/posts/EditPost.php
@@ -1,72 +1,72 @@
-<?php

-

-class EditPost extends TPage

-{

-	/**

-	 * Initializes the inputs with existing post data.

-	 * This method is invoked by the framework when the page is being initialized.

-	 * @param mixed event parameter

-	 */

-	public function onInit($param)

-	{

-		parent::onInit($param);

-		// Retrieves the existing user data. This is equivalent to:

-		// $postRecord=$this->getPost();

-		$postRecord=$this->Post;

-		// Authorization check: only the author or the administrator can edit the post

-		if($postRecord->author_id!==$this->User->Name && !$this->User->IsAdmin)

-			throw new THttpException(500,'You are not allowed to edit this post.');

-

-		if(!$this->IsPostBack)  // if the page is initially requested

-		{

-			// Populates the input controls with the existing post data

-			$this->TitleEdit->Text=$postRecord->title;

-			$this->ContentEdit->Text=$postRecord->content;

-		}

-	}

-

-	/**

-	 * Saves the post if all inputs are valid.

-	 * This method responds to the OnClick event of the "Save" button.

-	 * @param mixed event sender

-	 * @param mixed event parameter

-	 */

-	public function saveButtonClicked($sender,$param)

-	{

-		if($this->IsValid)  // when all validations succeed

-		{

-			// Retrieves the existing user data. This is equivalent to:

-			// $postRecord=$this->getPost();

-			$postRecord=$this->Post;

-

-			// Fetches the input data

-			$postRecord->title=$this->TitleEdit->SafeText;

-			$postRecord->content=$this->ContentEdit->SafeText;

-

-			// saves to the database via Active Record mechanism

-			$postRecord->save();

-

-			// redirects the browser to the ReadPost page

-			$url=$this->Service->constructUrl('posts.ReadPost',array('id'=>$postRecord->post_id));

-			$this->Response->redirect($url);

-		}

-	}

-

-	/**

-	 * Returns the post data to be editted.

-	 * @return PostRecord the post data to be editted.

-	 * @throws THttpException if the post data is not found.

-	 */

-	protected function getPost()

-	{

-		// the ID of the post to be editted is passed via GET parameter 'id'

-		$postID=(int)$this->Request['id'];

-		// use Active Record to look for the specified post ID

-		$postRecord=PostRecord::finder()->findByPk($postID);

-		if($postRecord===null)

-			throw new THttpException(500,'Post is not found.');

-		return $postRecord;

-	}

-}

-

+<?php
+
+class EditPost extends TPage
+{
+	/**
+	 * Initializes the inputs with existing post data.
+	 * This method is invoked by the framework when the page is being initialized.
+	 * @param mixed event parameter
+	 */
+	public function onInit($param)
+	{
+		parent::onInit($param);
+		// Retrieves the existing user data. This is equivalent to:
+		// $postRecord=$this->getPost();
+		$postRecord=$this->Post;
+		// Authorization check: only the author or the administrator can edit the post
+		if($postRecord->author_id!==$this->User->Name && !$this->User->IsAdmin)
+			throw new THttpException(500,'You are not allowed to edit this post.');
+
+		if(!$this->IsPostBack)  // if the page is initially requested
+		{
+			// Populates the input controls with the existing post data
+			$this->TitleEdit->Text=$postRecord->title;
+			$this->ContentEdit->Text=$postRecord->content;
+		}
+	}
+
+	/**
+	 * Saves the post if all inputs are valid.
+	 * This method responds to the OnClick event of the "Save" button.
+	 * @param mixed event sender
+	 * @param mixed event parameter
+	 */
+	public function saveButtonClicked($sender,$param)
+	{
+		if($this->IsValid)  // when all validations succeed
+		{
+			// Retrieves the existing user data. This is equivalent to:
+			// $postRecord=$this->getPost();
+			$postRecord=$this->Post;
+
+			// Fetches the input data
+			$postRecord->title=$this->TitleEdit->SafeText;
+			$postRecord->content=$this->ContentEdit->SafeText;
+
+			// saves to the database via Active Record mechanism
+			$postRecord->save();
+
+			// redirects the browser to the ReadPost page
+			$url=$this->Service->constructUrl('posts.ReadPost',array('id'=>$postRecord->post_id));
+			$this->Response->redirect($url);
+		}
+	}
+
+	/**
+	 * Returns the post data to be editted.
+	 * @return PostRecord the post data to be editted.
+	 * @throws THttpException if the post data is not found.
+	 */
+	protected function getPost()
+	{
+		// the ID of the post to be editted is passed via GET parameter 'id'
+		$postID=(int)$this->Request['id'];
+		// use Active Record to look for the specified post ID
+		$postRecord=PostRecord::finder()->findByPk($postID);
+		if($postRecord===null)
+			throw new THttpException(500,'Post is not found.');
+		return $postRecord;
+	}
+}
+
 ?>
\ No newline at end of file
diff --git a/demos/blog-tutorial/samples/day4/blog/protected/pages/posts/ListPost.php b/demos/blog-tutorial/samples/day4/blog/protected/pages/posts/ListPost.php
index 7402dace..ae5a7eeb 100644
--- a/demos/blog-tutorial/samples/day4/blog/protected/pages/posts/ListPost.php
+++ b/demos/blog-tutorial/samples/day4/blog/protected/pages/posts/ListPost.php
@@ -1,64 +1,64 @@
-<?php

-

-class ListPost extends TPage

-{

-	/**

-	 * Initializes the repeater.

-	 * This method is invoked by the framework when initializing the page

-	 * @param mixed event parameter

-	 */

-	public function onInit($param)

-	{

-		parent::onInit($param);

-		if(!$this->IsPostBack)  // if the page is requested the first time

-		{

-			// get the total number of posts available

-			$this->Repeater->VirtualItemCount=PostRecord::finder()->count();

-			// populates post data into the repeater

-			$this->populateData();

-		}

-	}

-

-	/**

-	 * Event handler to the OnPageIndexChanged event of the pager.

-	 * This method is invoked when the user clicks on a page button

-	 * and thus changes the page of posts to display.

-	 */

-	public function pageChanged($sender,$param)

-	{

-		// change the current page index to the new one

-		$this->Repeater->CurrentPageIndex=$param->NewPageIndex;

-		// re-populate data into the repeater

-		$this->populateData();

-	}

-

-	/**

-	 * Determines which page of posts to be displayed and

-	 * populates the repeater with the fetched data.

-	 */

-	protected function populateData()

-	{

-		$offset=$this->Repeater->CurrentPageIndex*$this->Repeater->PageSize;

-		$limit=$this->Repeater->PageSize;

-		if($offset+$limit>$this->Repeater->VirtualItemCount)

-			$limit=$this->Repeater->VirtualItemCount-$offset;

-		$this->Repeater->DataSource=$this->getPosts($offset,$limit);

-		$this->Repeater->dataBind();

-	}

-

-	/**

-	 * Fetches posts from database with offset and limit.

-	 */

-	protected function getPosts($offset, $limit)

-	{

-		// Construts a query criteria

-		$criteria=new TActiveRecordCriteria;

-		$criteria->OrdersBy['create_time']='desc';

-		$criteria->Limit=$limit;

-		$criteria->Offset=$offset;

-		// query for the posts with the above criteria and with author information

-		return PostRecord::finder()->withAuthor()->findAll($criteria);

-	}

-}

-

+<?php
+
+class ListPost extends TPage
+{
+	/**
+	 * Initializes the repeater.
+	 * This method is invoked by the framework when initializing the page
+	 * @param mixed event parameter
+	 */
+	public function onInit($param)
+	{
+		parent::onInit($param);
+		if(!$this->IsPostBack)  // if the page is requested the first time
+		{
+			// get the total number of posts available
+			$this->Repeater->VirtualItemCount=PostRecord::finder()->count();
+			// populates post data into the repeater
+			$this->populateData();
+		}
+	}
+
+	/**
+	 * Event handler to the OnPageIndexChanged event of the pager.
+	 * This method is invoked when the user clicks on a page button
+	 * and thus changes the page of posts to display.
+	 */
+	public function pageChanged($sender,$param)
+	{
+		// change the current page index to the new one
+		$this->Repeater->CurrentPageIndex=$param->NewPageIndex;
+		// re-populate data into the repeater
+		$this->populateData();
+	}
+
+	/**
+	 * Determines which page of posts to be displayed and
+	 * populates the repeater with the fetched data.
+	 */
+	protected function populateData()
+	{
+		$offset=$this->Repeater->CurrentPageIndex*$this->Repeater->PageSize;
+		$limit=$this->Repeater->PageSize;
+		if($offset+$limit>$this->Repeater->VirtualItemCount)
+			$limit=$this->Repeater->VirtualItemCount-$offset;
+		$this->Repeater->DataSource=$this->getPosts($offset,$limit);
+		$this->Repeater->dataBind();
+	}
+
+	/**
+	 * Fetches posts from database with offset and limit.
+	 */
+	protected function getPosts($offset, $limit)
+	{
+		// Construts a query criteria
+		$criteria=new TActiveRecordCriteria;
+		$criteria->OrdersBy['create_time']='desc';
+		$criteria->Limit=$limit;
+		$criteria->Offset=$offset;
+		// query for the posts with the above criteria and with author information
+		return PostRecord::finder()->withAuthor()->findAll($criteria);
+	}
+}
+
 ?>
\ No newline at end of file
diff --git a/demos/blog-tutorial/samples/day4/blog/protected/pages/posts/NewPost.php b/demos/blog-tutorial/samples/day4/blog/protected/pages/posts/NewPost.php
index a5e3ea4d..d3a36133 100644
--- a/demos/blog-tutorial/samples/day4/blog/protected/pages/posts/NewPost.php
+++ b/demos/blog-tutorial/samples/day4/blog/protected/pages/posts/NewPost.php
@@ -1,34 +1,34 @@
-<?php

-

-class NewPost extends TPage

-{

-	/**

-	 * Creates a new post if all inputs are valid.

-	 * This method responds to the OnClick event of the "create" button.

-	 * @param mixed event sender

-	 * @param mixed event parameter

-	 */

-	public function createButtonClicked($sender,$param)

-	{

-		if($this->IsValid)  // when all validations succeed

-		{

-			// populates a PostRecord object with user inputs

-			$postRecord=new PostRecord;

-			// using SafeText instead of Text avoids Cross Site Scripting attack

-			$postRecord->title=$this->TitleEdit->SafeText;

-			$postRecord->content=$this->ContentEdit->SafeText;

-			$postRecord->author_id=$this->User->Name;

-			$postRecord->create_time=time();

-			$postRecord->status=0;

-

-			// saves to the database via Active Record mechanism

-			$postRecord->save();

-

-			// redirects the browser to the newly created post page

-			$url=$this->Service->constructUrl('posts.ReadPost',array('id'=>$postRecord->post_id));

-			$this->Response->redirect($url);

-		}

-	}

-}

-

+<?php
+
+class NewPost extends TPage
+{
+	/**
+	 * Creates a new post if all inputs are valid.
+	 * This method responds to the OnClick event of the "create" button.
+	 * @param mixed event sender
+	 * @param mixed event parameter
+	 */
+	public function createButtonClicked($sender,$param)
+	{
+		if($this->IsValid)  // when all validations succeed
+		{
+			// populates a PostRecord object with user inputs
+			$postRecord=new PostRecord;
+			// using SafeText instead of Text avoids Cross Site Scripting attack
+			$postRecord->title=$this->TitleEdit->SafeText;
+			$postRecord->content=$this->ContentEdit->SafeText;
+			$postRecord->author_id=$this->User->Name;
+			$postRecord->create_time=time();
+			$postRecord->status=0;
+
+			// saves to the database via Active Record mechanism
+			$postRecord->save();
+
+			// redirects the browser to the newly created post page
+			$url=$this->Service->constructUrl('posts.ReadPost',array('id'=>$postRecord->post_id));
+			$this->Response->redirect($url);
+		}
+	}
+}
+
 ?>
\ No newline at end of file
diff --git a/demos/blog-tutorial/samples/day4/blog/protected/pages/posts/PostRenderer.php b/demos/blog-tutorial/samples/day4/blog/protected/pages/posts/PostRenderer.php
index cf0539a1..ed80f10c 100644
--- a/demos/blog-tutorial/samples/day4/blog/protected/pages/posts/PostRenderer.php
+++ b/demos/blog-tutorial/samples/day4/blog/protected/pages/posts/PostRenderer.php
@@ -1,7 +1,7 @@
-<?php

-

-class PostRenderer extends TRepeaterItemRenderer

-{

-}

-

+<?php
+
+class PostRenderer extends TRepeaterItemRenderer
+{
+}
+
 ?>
\ No newline at end of file
diff --git a/demos/blog-tutorial/samples/day4/blog/protected/pages/posts/ReadPost.php b/demos/blog-tutorial/samples/day4/blog/protected/pages/posts/ReadPost.php
index 2aeaa4d3..4c2035e6 100644
--- a/demos/blog-tutorial/samples/day4/blog/protected/pages/posts/ReadPost.php
+++ b/demos/blog-tutorial/samples/day4/blog/protected/pages/posts/ReadPost.php
@@ -1,57 +1,57 @@
-<?php

-

-class ReadPost extends TPage

-{

-	private $_post;

-	/**

-	 * Fetches the post data.

-	 * This method is invoked by the framework when initializing the page

-	 * @param mixed event parameter

-	 */

-	public function onInit($param)

-	{

-		parent::onInit($param);

-		// post id is passed via the 'id' GET parameter

-		$postID=(int)$this->Request['id'];

-		// retrieves PostRecord with author information filled in

-		$this->_post=PostRecord::finder()->withAuthor()->findByPk($postID);

-		if($this->_post===null)  // if post id is invalid

-			throw new THttpException(500,'Unable to find the specified post.');

-		// set the page title as the post title

-		$this->Title=$this->_post->title;

-	}

-

-	/**

-	 * @return PostRecord the PostRecord currently being viewed

-	 */

-	public function getPost()

-	{

-		return $this->_post;

-	}

-

-	/**

-	 * Deletes the post currently being viewed

-	 * This method is invoked when the user clicks on the "Delete" button

-	 */

-	public function deletePost($sender,$param)

-	{

-		// only the author or the administrator can delete a post

-		if(!$this->canEdit())

-			throw new THttpException('You are not allowed to perform this action.');

-		// delete it from DB

-		$this->_post->delete();

-		// redirect the browser to the homepage

-		$this->Response->redirect($this->Service->DefaultPageUrl);

-	}

-

-	/**

-	 * @return boolean whether the current user can edit/delete the post being viewed

-	 */

-	public function canEdit()

-	{

-		// only the author or the administrator can edit/delete a post

-		return $this->User->Name===$this->Post->author_id || $this->User->IsAdmin;

-	}

-}

-

+<?php
+
+class ReadPost extends TPage
+{
+	private $_post;
+	/**
+	 * Fetches the post data.
+	 * This method is invoked by the framework when initializing the page
+	 * @param mixed event parameter
+	 */
+	public function onInit($param)
+	{
+		parent::onInit($param);
+		// post id is passed via the 'id' GET parameter
+		$postID=(int)$this->Request['id'];
+		// retrieves PostRecord with author information filled in
+		$this->_post=PostRecord::finder()->withAuthor()->findByPk($postID);
+		if($this->_post===null)  // if post id is invalid
+			throw new THttpException(500,'Unable to find the specified post.');
+		// set the page title as the post title
+		$this->Title=$this->_post->title;
+	}
+
+	/**
+	 * @return PostRecord the PostRecord currently being viewed
+	 */
+	public function getPost()
+	{
+		return $this->_post;
+	}
+
+	/**
+	 * Deletes the post currently being viewed
+	 * This method is invoked when the user clicks on the "Delete" button
+	 */
+	public function deletePost($sender,$param)
+	{
+		// only the author or the administrator can delete a post
+		if(!$this->canEdit())
+			throw new THttpException('You are not allowed to perform this action.');
+		// delete it from DB
+		$this->_post->delete();
+		// redirect the browser to the homepage
+		$this->Response->redirect($this->Service->DefaultPageUrl);
+	}
+
+	/**
+	 * @return boolean whether the current user can edit/delete the post being viewed
+	 */
+	public function canEdit()
+	{
+		// only the author or the administrator can edit/delete a post
+		return $this->User->Name===$this->Post->author_id || $this->User->IsAdmin;
+	}
+}
+
 ?>
\ No newline at end of file
diff --git a/demos/blog-tutorial/samples/day4/blog/protected/pages/users/AdminUser.php b/demos/blog-tutorial/samples/day4/blog/protected/pages/users/AdminUser.php
index ad8f6e3d..ad668e1a 100644
--- a/demos/blog-tutorial/samples/day4/blog/protected/pages/users/AdminUser.php
+++ b/demos/blog-tutorial/samples/day4/blog/protected/pages/users/AdminUser.php
@@ -1,36 +1,36 @@
-<?php

-

-class AdminUser extends TPage

-{

-	/**

-	 * Populates the datagrid with user lists.

-	 * This method is invoked by the framework when initializing the page

-	 * @param mixed event parameter

-	 */

-	public function onInit($param)

-	{

-		parent::onInit($param);

-		// fetches all data account information

-		$this->UserGrid->DataSource=UserRecord::finder()->findAll();

-		// binds the data to interface components

-		$this->UserGrid->dataBind();

-	}

-

-	/**

-	 * Deletes a specified user record.

-	 * This method responds to the datagrid's OnDeleteCommand event.

-	 * @param TDataGrid the event sender

-	 * @param TDataGridCommandEventParameter the event parameter

-	 */

-	public function deleteButtonClicked($sender,$param)

-	{

-		// obtains the datagrid item that contains the clicked delete button

-		$item=$param->Item;

-		// obtains the primary key corresponding to the datagrid item

-		$username=$this->UserGrid->DataKeys[$item->ItemIndex];

-		// deletes the user record with the specified username primary key

-		UserRecord::finder()->deleteByPk($username);

-	}

-}

-

+<?php
+
+class AdminUser extends TPage
+{
+	/**
+	 * Populates the datagrid with user lists.
+	 * This method is invoked by the framework when initializing the page
+	 * @param mixed event parameter
+	 */
+	public function onInit($param)
+	{
+		parent::onInit($param);
+		// fetches all data account information
+		$this->UserGrid->DataSource=UserRecord::finder()->findAll();
+		// binds the data to interface components
+		$this->UserGrid->dataBind();
+	}
+
+	/**
+	 * Deletes a specified user record.
+	 * This method responds to the datagrid's OnDeleteCommand event.
+	 * @param TDataGrid the event sender
+	 * @param TDataGridCommandEventParameter the event parameter
+	 */
+	public function deleteButtonClicked($sender,$param)
+	{
+		// obtains the datagrid item that contains the clicked delete button
+		$item=$param->Item;
+		// obtains the primary key corresponding to the datagrid item
+		$username=$this->UserGrid->DataKeys[$item->ItemIndex];
+		// deletes the user record with the specified username primary key
+		UserRecord::finder()->deleteByPk($username);
+	}
+}
+
 ?>
\ No newline at end of file
diff --git a/demos/blog-tutorial/samples/day4/blog/protected/pages/users/EditUser.php b/demos/blog-tutorial/samples/day4/blog/protected/pages/users/EditUser.php
index 81538c33..f8c61463 100644
--- a/demos/blog-tutorial/samples/day4/blog/protected/pages/users/EditUser.php
+++ b/demos/blog-tutorial/samples/day4/blog/protected/pages/users/EditUser.php
@@ -1,83 +1,83 @@
-<?php

-

-class EditUser extends TPage

-{

-	/**

-	 * Initializes the inputs with existing user data.

-	 * This method is invoked by the framework when the page is being initialized.

-	 * @param mixed event parameter

-	 */

-	public function onInit($param)

-	{

-		parent::onInit($param);

-		if(!$this->IsPostBack)  // if the page is initially requested

-		{

-			// Retrieves the existing user data. This is equivalent to:

-			// $userRecord=$this->getUserRecord();

-			$userRecord=$this->UserRecord;

-

-			// Populates the input controls with the existing user data

-			$this->Username->Text=$userRecord->username;

-			$this->Email->Text=$userRecord->email;

-			$this->Role->SelectedValue=$userRecord->role;

-			$this->FirstName->Text=$userRecord->first_name;

-			$this->LastName->Text=$userRecord->last_name;

-		}

-	}

-

-	/**

-	 * Saves the user account if all inputs are valid.

-	 * This method responds to the OnClick event of the "save" button.

-	 * @param mixed event sender

-	 * @param mixed event parameter

-	 */

-	public function saveButtonClicked($sender,$param)

-	{

-		if($this->IsValid)  // when all validations succeed

-		{

-			// Retrieves the existing user data. This is equivalent to:

-			$userRecord=$this->UserRecord;

-

-			// Fetches the input data

-			$userRecord->username=$this->Username->Text;

-			// update password when the input is not empty

-			if(!empty($this->Password->Text))

-				$userRecord->password=$this->Password->Text;

-			$userRecord->email=$this->Email->Text;

-			// update the role if the current user is an administrator

-			if($this->User->IsAdmin)

-				$userRecord->role=(int)$this->Role->SelectedValue;

-			$userRecord->first_name=$this->FirstName->Text;

-			$userRecord->last_name=$this->LastName->Text;

-

-			// saves to the database via Active Record mechanism

-			$userRecord->save();

-

-			// redirects the browser to the homepage

-			$this->Response->redirect($this->Service->DefaultPageUrl);

-		}

-	}

-

-	/**

-	 * Returns the user data to be editted.

-	 * @return UserRecord the user data to be editted.

-	 * @throws THttpException if the user data is not found.

-	 */

-	protected function getUserRecord()

-	{

-		// the user to be editted is the currently logged-in user

-		$username=$this->User->Name;

-		// if the 'username' GET var is not empty and the current user

-		// is an administrator, we use the GET var value instead.

-		if($this->User->IsAdmin && $this->Request['username']!==null)

-			$username=$this->Request['username'];

-

-		// use Active Record to look for the specified username

-		$userRecord=UserRecord::finder()->findByPk($username);

-		if(!($userRecord instanceof UserRecord))

-			throw new THttpException(500,'Username is invalid.');

-		return $userRecord;

-	}

-}

-

+<?php
+
+class EditUser extends TPage
+{
+	/**
+	 * Initializes the inputs with existing user data.
+	 * This method is invoked by the framework when the page is being initialized.
+	 * @param mixed event parameter
+	 */
+	public function onInit($param)
+	{
+		parent::onInit($param);
+		if(!$this->IsPostBack)  // if the page is initially requested
+		{
+			// Retrieves the existing user data. This is equivalent to:
+			// $userRecord=$this->getUserRecord();
+			$userRecord=$this->UserRecord;
+
+			// Populates the input controls with the existing user data
+			$this->Username->Text=$userRecord->username;
+			$this->Email->Text=$userRecord->email;
+			$this->Role->SelectedValue=$userRecord->role;
+			$this->FirstName->Text=$userRecord->first_name;
+			$this->LastName->Text=$userRecord->last_name;
+		}
+	}
+
+	/**
+	 * Saves the user account if all inputs are valid.
+	 * This method responds to the OnClick event of the "save" button.
+	 * @param mixed event sender
+	 * @param mixed event parameter
+	 */
+	public function saveButtonClicked($sender,$param)
+	{
+		if($this->IsValid)  // when all validations succeed
+		{
+			// Retrieves the existing user data. This is equivalent to:
+			$userRecord=$this->UserRecord;
+
+			// Fetches the input data
+			$userRecord->username=$this->Username->Text;
+			// update password when the input is not empty
+			if(!empty($this->Password->Text))
+				$userRecord->password=$this->Password->Text;
+			$userRecord->email=$this->Email->Text;
+			// update the role if the current user is an administrator
+			if($this->User->IsAdmin)
+				$userRecord->role=(int)$this->Role->SelectedValue;
+			$userRecord->first_name=$this->FirstName->Text;
+			$userRecord->last_name=$this->LastName->Text;
+
+			// saves to the database via Active Record mechanism
+			$userRecord->save();
+
+			// redirects the browser to the homepage
+			$this->Response->redirect($this->Service->DefaultPageUrl);
+		}
+	}
+
+	/**
+	 * Returns the user data to be editted.
+	 * @return UserRecord the user data to be editted.
+	 * @throws THttpException if the user data is not found.
+	 */
+	protected function getUserRecord()
+	{
+		// the user to be editted is the currently logged-in user
+		$username=$this->User->Name;
+		// if the 'username' GET var is not empty and the current user
+		// is an administrator, we use the GET var value instead.
+		if($this->User->IsAdmin && $this->Request['username']!==null)
+			$username=$this->Request['username'];
+
+		// use Active Record to look for the specified username
+		$userRecord=UserRecord::finder()->findByPk($username);
+		if(!($userRecord instanceof UserRecord))
+			throw new THttpException(500,'Username is invalid.');
+		return $userRecord;
+	}
+}
+
 ?>
\ No newline at end of file
diff --git a/demos/blog-tutorial/samples/day4/blog/protected/pages/users/LoginUser.php b/demos/blog-tutorial/samples/day4/blog/protected/pages/users/LoginUser.php
index a0955490..407906ae 100644
--- a/demos/blog-tutorial/samples/day4/blog/protected/pages/users/LoginUser.php
+++ b/demos/blog-tutorial/samples/day4/blog/protected/pages/users/LoginUser.php
@@ -1,37 +1,37 @@
-<?php

-

-class LoginUser extends TPage

-{

-	/**

-	 * Validates whether the username and password are correct.

-	 * This method responds to the TCustomValidator's OnServerValidate event.

-	 * @param mixed event sender

-	 * @param mixed event parameter

-	 */

-	public function validateUser($sender,$param)

-	{

-		$authManager=$this->Application->getModule('auth');

-		if(!$authManager->login($this->Username->Text,$this->Password->Text))

-			$param->IsValid=false;  // tell the validator that validation fails

-	}

-

-	/**

-	 * Redirects the user's browser to appropriate URL if login succeeds.

-	 * This method responds to the login button's OnClick event.

-	 * @param mixed event sender

-	 * @param mixed event parameter

-	 */

-	public function loginButtonClicked($sender,$param)

-	{

-		if($this->Page->IsValid)  // all validations succeed

-		{

-			// obtain the URL of the privileged page that the user wanted to visit originally

-			$url=$this->Application->getModule('auth')->ReturnUrl;

-			if(empty($url))  // the user accesses the login page directly

-				$url=$this->Service->DefaultPageUrl;

-			$this->Response->redirect($url);

-		}

-	}

-}

-

+<?php
+
+class LoginUser extends TPage
+{
+	/**
+	 * Validates whether the username and password are correct.
+	 * This method responds to the TCustomValidator's OnServerValidate event.
+	 * @param mixed event sender
+	 * @param mixed event parameter
+	 */
+	public function validateUser($sender,$param)
+	{
+		$authManager=$this->Application->getModule('auth');
+		if(!$authManager->login($this->Username->Text,$this->Password->Text))
+			$param->IsValid=false;  // tell the validator that validation fails
+	}
+
+	/**
+	 * Redirects the user's browser to appropriate URL if login succeeds.
+	 * This method responds to the login button's OnClick event.
+	 * @param mixed event sender
+	 * @param mixed event parameter
+	 */
+	public function loginButtonClicked($sender,$param)
+	{
+		if($this->Page->IsValid)  // all validations succeed
+		{
+			// obtain the URL of the privileged page that the user wanted to visit originally
+			$url=$this->Application->getModule('auth')->ReturnUrl;
+			if(empty($url))  // the user accesses the login page directly
+				$url=$this->Service->DefaultPageUrl;
+			$this->Response->redirect($url);
+		}
+	}
+}
+
 ?>
\ No newline at end of file
diff --git a/demos/blog-tutorial/samples/day4/blog/protected/pages/users/NewUser.php b/demos/blog-tutorial/samples/day4/blog/protected/pages/users/NewUser.php
index 76e8cb88..3bf6768a 100644
--- a/demos/blog-tutorial/samples/day4/blog/protected/pages/users/NewUser.php
+++ b/demos/blog-tutorial/samples/day4/blog/protected/pages/users/NewUser.php
@@ -1,45 +1,45 @@
-<?php

-

-class NewUser extends TPage

-{

-	/**

-	 * Checks whether the username exists in the database.

-	 * This method responds to the OnServerValidate event of username's custom validator.

-	 * @param mixed event sender

-	 * @param mixed event parameter

-	 */

-	public function checkUsername($sender,$param)

-	{

-		// valid if the username is not found in the database

-		$param->IsValid=UserRecord::finder()->findByPk($this->Username->Text)===null;

-	}

-

-	/**

-	 * Creates a new user account if all inputs are valid.

-	 * This method responds to the OnClick event of the "create" button.

-	 * @param mixed event sender

-	 * @param mixed event parameter

-	 */

-	public function createButtonClicked($sender,$param)

-	{

-		if($this->IsValid)  // when all validations succeed

-		{

-			// populates a UserRecord object with user inputs

-			$userRecord=new UserRecord;

-			$userRecord->username=$this->Username->Text;

-			$userRecord->password=$this->Password->Text;

-			$userRecord->email=$this->Email->Text;

-			$userRecord->role=(int)$this->Role->SelectedValue;

-			$userRecord->first_name=$this->FirstName->Text;

-			$userRecord->last_name=$this->LastName->Text;

-

-			// saves to the database via Active Record mechanism

-			$userRecord->save();

-

-			// redirects the browser to the homepage

-			$this->Response->redirect($this->Service->DefaultPageUrl);

-		}

-	}

-}

-

+<?php
+
+class NewUser extends TPage
+{
+	/**
+	 * Checks whether the username exists in the database.
+	 * This method responds to the OnServerValidate event of username's custom validator.
+	 * @param mixed event sender
+	 * @param mixed event parameter
+	 */
+	public function checkUsername($sender,$param)
+	{
+		// valid if the username is not found in the database
+		$param->IsValid=UserRecord::finder()->findByPk($this->Username->Text)===null;
+	}
+
+	/**
+	 * Creates a new user account if all inputs are valid.
+	 * This method responds to the OnClick event of the "create" button.
+	 * @param mixed event sender
+	 * @param mixed event parameter
+	 */
+	public function createButtonClicked($sender,$param)
+	{
+		if($this->IsValid)  // when all validations succeed
+		{
+			// populates a UserRecord object with user inputs
+			$userRecord=new UserRecord;
+			$userRecord->username=$this->Username->Text;
+			$userRecord->password=$this->Password->Text;
+			$userRecord->email=$this->Email->Text;
+			$userRecord->role=(int)$this->Role->SelectedValue;
+			$userRecord->first_name=$this->FirstName->Text;
+			$userRecord->last_name=$this->LastName->Text;
+
+			// saves to the database via Active Record mechanism
+			$userRecord->save();
+
+			// redirects the browser to the homepage
+			$this->Response->redirect($this->Service->DefaultPageUrl);
+		}
+	}
+}
+
 ?>
\ No newline at end of file