Zend Framework 1.8 workshop

Zend Framework Presentation

Nick BelhommePHP5 Zend Certified Engineer + Zend Framework Certi fied Engineer

17 June 2009

Zend Framework 1.8 workshop


17 June 2009

About Me:PHP5 Zend Certified Engineer (PHP5 ZCE)Zend Framework Certified Engineer (ZCE-ZF)ZF Contributor since 2008Freelance ConsultantPHP Community active member


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Zend Framework

• Full Stack Framework• Component Library



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How to Get It?

• Grab it from the download page:http://framework.zend.com/download/latest

• Through Subversion:http://framework.zend.com/svn/framework/standard/tr unk/



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How To Install?

Add it to your php.ini include_path directive

include_path = .:/usr/local/lib/php:/PathToZendFrame workLibrary

That’s it!



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Starting A New Project With Zend_Tool

First requirements:• For *nix environments copy the zf.sh and zf.php fro m the ZF/bin

To the same directory as your PHP binary

• For Windows: •copy the zf.php and zf.bat to the same directory as your

PHP binary•add the php path to your PATH environment Var:

# Right-click My Computer and select |Properties.# Select the Environment page.# In the System Variables area, click on PATH.# Add the php path to the end in the format VALUE1;V ALUE2;c:\php# Click Apply.# The changes take effect immediately.



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Creating the project “MyProject”

$ zf create project /path/to/non-existent-dir-called -MyProject



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Adding a “MyProject” vhost

<VirtualHost *:80>ServerName MyProjectDocumentRoot absolute-path-to-MyProject-folderErrorLog logs\MyProject-error.logCustomLog logs\MyProject-access.log common

<Directory />Options FollowSymLinksAllowOverride AllOrder allow,denyAllow from allSatisfy all

</Directory></VirtualHost>

Testing environment httpd.conf or httpd-vhosts.conf :



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127.0.0.1 MyProject

For windows: Add the following line to the /etc/hos t file

Restart apache, fire up the browser and go to: http ://MyProject



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Go to the MyProject directory and issue the followi ng command to create the helloAction in the IndexController an d corresponding view:

$ zf create action hello index

Creating an Action + View

For a full list of commands simply visit:http://framework.zend.com/manual/en/zend.tool.proje ct.create-a-project.html

Or issue the command:

$ zf --help



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$ zf create module admin

Creating a Module and Controller

$ zf create controller index 1 admin

Note: Trying to create a controller that already ex ists in anotherModule might result in an error. Depending on the Z end_ToolVerion you have. The solution is to apply the patch from ZF Issue Tracker: http://framework.zend.com/issues/browse/ZF-6853

Note: If you applied this patch, make sure all cont roller names in the adminmodule start with Admin_



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Registering the Module

class Bootstrap extends Zend_Application_Bootstrap_ Bootstrap{

protected function _initAutoloadModuleAdmin(){

$autoloader = new Zend_Application_Module_Autoloade r(array('namespace' => 'Admin','basePath' => APPLICATION_PATH.'/modules/admin',

));return $autoloader;

}}

The method is called automatically by Zend_Application as it starts with _init. You can choose the remainder of the method name as you like.



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Registering the Module

resources.frontController.moduleDirectory = APPLICAT ION_PATH "/modules"

myProject/application/configs/application.ini



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Setting up the Mysql Database

Add to configs/application.ini [production]===============================

resources.db.adapter = PDO_MYSQLresources.db.params.host = localhostresources.db.params.username = nickresources.db.params.password = 12345resources.db.params.dbname = myproject



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Create the database table

CREATE TABLE users (id int(11) NOT NULL auto_increment,username varchar(100) NOT NULL,pwd varchar(32) NOT NULL,firstname varchar(20) NOT NULL,PRIMARY KEY (id));



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Populate the table

INSERT INTO users (username, pwd, firstname)VALUES('NickBelhomme', md5('hello'), 'Nick'),('ChanieNavez', md5('strong'), 'Chantal'),('ElvisP', md5('presley'), 'Elvis');



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The Model + DAO



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myProject/application/modules/admin/models/dao/Inte rface.php

interface Admin_Model_Dao_Interface{

public function find($id);public function insert($username, $pwd, $firstname);public function update($id, $username, $pwd, $firstname);public function delete($id);public function findAll();

}

Common interface between all DAOs.



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myProject/application/modules/admin/models/dao/User DB.php

class Admin_Model_Dao_UserDB extends Zend_Db_Table

implements Admin_Model_Dao_Interface{

protected $_name = 'users';public function find($id){

$id = (int)$id;$row = $this->fetchRow('id = ' . $id);if (!$row) {

throw new Exception("Count not find row $id");}return $row;

}public function insert($username, $pwd, $firstname){

$data = array('username' => $username,'pwd' => $this->hashPassword($pwd),'firstname' => $firstname,

);parent::insert($data);

}//...

}

Very Simple DAO(Data Access Object)



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myProject/application/modules/admin/models/Dao/User DB.php

class Admin_Model_Dao_UserDB extends Zend_Db_Tableimplements Admin_Model_Dao_Interface

{//…public function update($id, $username, $pwd, $firstname){

$data = array('username' => $username,'pwd' => $this->hashPassword($pwd),'firstname' => $firstname,

);parent::update($data, 'id = '. (int)$id);

}public function delete($id){

parent::delete('id =' . (int)$id);}public function findAll() {

return $this->fetchAll();}protected function hashPassword($pwd) {

return md5($pwd);}

}?>

Very Simple DAO(Data Access Object)To explain the principleof an extra layer



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myProject/application/modules/admin/models/User.php

class Admin_Model_User{

const DAO_CLASS = 'Admin_Model_Dao_UserDB';protected $dao;

public function __construct() {$daoClassName = self::DAO_CLASS;$this->dao = new $daoClassName();

}public function find($id){

return $this->dao->find($id);}public function insert($username, $pwd, $firstname){

return $this->dao->insert($username, $pwd, $firstname);}public function update($id, $username, $pwd, $firstname){

return $this->dao->update($id, $username, $pwd, $firstname);}// ...

}

The Model using the DAO.

Easy Switching betweenDifferent data resources



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myProject/application/modules/admin/models/User.php

<?phpclass Admin_Model_User{

// ...public function delete($id){

return $this->dao->delete($id);}

public function findAll(){

return $this->dao->findAll();}

}

The Model using the DAO.

Easy Switching betweenDifferent data resources



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The Actions and Views



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$ zf create action add index 1 admin$ zf create action edit index 1 admin$ zf create action delete index 1 admin

Setting up the admin actions

Again if you are using a version of Zend_Tool which isn’t fully moduleAware you can patch the Zend_Tool_Project_Provider_ Action withif (self::hasResource($this->_loadedProfile, $name, $controllerName , $module ))



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The Admin_IndexController indexAction

public function indexAction(){

$users = new Admin_Model_User();$this->view->users = $users->findAll();

}



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The corresponding index.phtml view script:myProject/application/modules/admin/views/scripts/i ndex/index.phtml

<p><a href="<?php echo $this->url(array('controller'=>'index','action'=>'add'));?>">Add new user</a></p>

<table><tr>

<th>Username</th><th>First Name</th><th> </th>

</tr><?php foreach($this->users as $user) : ?><tr>

<td><?php echo $this->escape($user->username);?></td><td><?php echo $this->escape($user->firstname);?></td><td>

<a href="<?php echo $this->url(array('controller'=>'index','action'=>'edit','id'=>$user->id));?>">Edit</a>

<a href="<?php echo $this->url(array('controller'=>'index','action'=>'delete','id'=>$user->id));?>">Delete</a>

</td></tr><?php endforeach; ?>

</table>



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The Admin_IndexController deleteAction

public function deleteAction(){

if ($this->getRequest()->isPost()) {$del = $this->getRequest()->getPost('del');if ($del == 'Yes') {

$id = $this->getRequest()->getPost('id');$users = new Admin_Model_User();$users->delete($id);

}$this->_redirect('/admin/');

} else {$id = $this->_getParam('id', 0);$users = new Admin_Model_User();$this->view->user = $users->find($id);

}}


REST: irreversible action use POST not GET


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The corresponding delete.phtml view script:myProject/application/modules/admin/views/scripts/i ndex/delete.phtml

<p>Are you sure that you want to delete'<?php echo $this->escape($this->user['username']); ?>' aka'<?php echo $this->escape($this->user['firstname']); ?>'?

</p>

<form action="<?php echo $this->url(array('action'=>'delete')); ?>" method="post"><fieldset>

<input type="hidden" name="id"value="<?php echo $this->escape($this->user['id']); ?>" />

<input type="submit" name="del" value="Yes" /><input type="submit" name="del" value="No" />

</fieldset></form>



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The Admin_IndexController addAction

public function addAction(){

if ($this->getRequest()->isPost()) {$action = $this->getRequest()->getPost('action');if ($action == 'add') {

$username = $this->getRequest()->getPost('username');$pwd = $this->getRequest()->getPost('pwd');$firstname = $this->getRequest()->getPost('firstname');$users = new Admin_Model_User();$users->insert($username, $pwd, $firstname);


}}



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The corresponding add.phtml view script:myProject/application/modules/admin/views/scripts/i ndex/add.phtml

<h2>Add a new User</h2><form action="<?php echo $this->url(array('action'=>'add')); ?>" method="post">

<fieldset>username: <input type="text" name="username"><br/>password: <input type="password" name="pwd"><br/>firstname: <input type="text" name="firstname"><br/><input type="submit" name="action" value="add" />

</fieldset></form>



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The Admin_IndexController editAction

public function editAction(){

if ($this->getRequest()->isPost()) {$action = $this->getRequest()->getPost('action');if ($action == 'edit') {

$id = $this->getRequest()->getPost('id');$username = $this->getRequest()->getPost('username');$pwd = $this->getRequest()->getPost('pwd');$firstname = $this->getRequest()->getPost('firstname');$users = new Admin_Model_User();$users->update($username, $pwd, $firstname);


} else {$id = $this->_getParam('id', 0);$users = new Admin_Model_User();$this->view->user = $users->find($id);

}}



Nick BelhommePHP5 Zend Certified Engineer

17 June 2009

The corresponding edit.phtml view script:myProject/application/modules/admin/views/scripts/i ndex/edit.phtml

<h2>Edit User: <?php echo $this->escape($this->user->username); ?></h2><form action="<?php echo $this->url(array('action'=>'edit')); ?>" method="post">

<fieldset><input type="hidden" name="id"

value="<?php echo $this->escape($this->user->id); ?>">username: <input type="text" name="username"

value="<?php echo $this->escape($this->user->username); ?>"><br/>password: <input type="password" name="pwd"><br/>firstname: <input type="text" name="firstname"

value="<?php echo $this->escape($this->user->firstname); ?>"><br/><input type="submit" name="action" value="edit" />

</fieldset></form>



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Authentication:

Zend_Auth

Authentication is loosely defined as determining wh ether an entity actually is what it purports to be (i.e., identification), based on some set of credentials.

http://framework.zend.com/manual/en/zend.auth.html# zend.auth.introduction




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Append the DAO and User Classes

interface Admin_Model_Dao_Interface{

// …public function findCredentials($username, $pwd);

}

class Admin_Model_Dao_UserDB extends Zend_Db_Tableimplements Admin_Model_Dao_Interface

{// …public function findCredentials($username, $pwd){

$select = $this->select()->where('username = ?', $username)->where('pwd = ?', $this->hashPassword($pwd));

$row = $this->fetchRow($select);if($row) {

return $row;}return false;

}}



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Append the DAO and User Classes

class Admin_Model_User{

// ...public function findCredentials($username, $password){

return $this->dao->findCredentials($username, $password);}

}



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Always use a vendor or project prefixAnd inform the autoloader of library prefixes

Prepend the application bootstrap

class Bootstrap extends Zend_Application_Bootstrap_Bootstrap{

protected function _initAutoloadModuleDefault(){

$autoloader = new Zend_Application_Module_Autoloader(array('namespace' => 'Myp','basePath' => dirname(__FILE__)

));return $autoloader;

}//...

}



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Create an application model: The Auth AdaptermyProject/application/models/AuthAdapter.php

class Myp_Model_AuthAdapter implements Zend_Auth_Adapter_Interface{

protected $username;protected $password;protected $user;

public function __construct($username, $password) {$this->username = $username;$this->password = $password;$this->user = new Admin_Model_User();

}public function authenticate(){

$match = $this->user->findCredentials($this->username, $this->password);if(!$match) {

$result = new Zend_Auth_Result(Zend_Auth_Result::FAILURE_CREDENTIAL_INVALID, null);} else {

$user = current($match);$result = new Zend_Auth_Result(Zend_Auth_Result::SUCCESS, $user);

}return $result;

}}


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The IndexController loginAction


$ zf create action login index 1


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The IndexController loginActionpublic function loginAction()

{$auth = Zend_Auth::getInstance();if(Zend_Auth::getInstance()->hasIdentity()) {

$this->_redirect('/index/hello');} else if ($this->getRequest()->isPost()) {

$action = $this->getRequest()->getPost('action');if ($action == 'login') {

$username = $this->getRequest()->getPost('username');$pwd = $this->getRequest()->getPost('pwd');$authAdapter = new Myp_Model_AuthAdapter($username, $pwd);$result = $auth->authenticate($authAdapter);if(!$result->isValid()) {

switch ($result->getCode()) {case Zend_Auth_Result::FAILURE_CREDENTIAL_INVALID:

$this->view->error = 'user credentials not found';}

} else {$this->_redirect('/index/hello');

}}

}}



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The corresponding login.phtml view script:myProject/application/views/scripts/index/login.pht ml

<h2>Login</h2><form action="<?php echo $this->url(array('action'=>'login')); ?>" method="post">

<fieldset>username: <input type="text" name="username"><br/>password: <input type="password" name="pwd"><br/><div><?php echo $this->escape($this->error);?></div><input type="submit" name="action" value="login" />

</fieldset></form>



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The IndexController helloAction

public function helloAction(){

if(Zend_Auth::getInstance()->hasIdentity()) {$this->view->user = Zend_Auth::getInstance()->getIdentity();

}}



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The corresponding hello.phtml view script:myProject/application/views/scripts/index/hello.pht ml

<?php if(isset($this->user)):?>welcome <?php echo $this->escape($this->user['firstname']); ?>,to the MyProject application.

<?php else: ?>you need to login first. <a href="<?php echo $this->url(array('action' => 'login')); ?>">login</a>

<?php endif; ?>



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And that is Authentication.

if(Zend_Auth::getInstance()->hasIdentity())



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What about?

•Authorization (Zend_Acl)•Filter Input, Escape Output?

•Input Validation (Zend_Validate)•Input filtering (Zend_Filter)

•Dynamic Forms (Zend_Form)

And all the other great stuff???!!!!



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There is always next time!

1 hour courses, remember??? ;)



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Resources

•http://blog.nickbelhomme.com•http://www.slideshare.net/weierophinney/zend-framew ork-workshop-dpc09•http://en.wikipedia.org/wiki/Zend_Framework•http://blog.astrumfutura.com/archives/373-The-M-in-MV C-Why-Models-are-Misunderstood-and-Unappreciated.html

Source code of this workshop available at:http://blog.nickbelhomme.com/wp-content/uploads/wor kshopzf1.8.zip


Zend Framework 1.8 workshop

Technology

Transcript of Zend Framework 1.8 workshop