Authentication example
First create a table in your database by executing the
following sql query.
CREATE TABLE IF NOT EXISTS `users` (
`id` int(11) NOT
NULL AUTO_INCREMENT,
`username`
varchar(100) NOT NULL,
`password`
varchar(50) NOT NULL,
`email` varchar(100)
NOT NULL,
`status` int(2) NOT
NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB
DEFAULT CHARSET=latin1 AUTO_INCREMENT=1 ;
Next step to create a model against this table in your
application/model/ directory.
I am creating Users.php and writing the following code in
it.
<?
class Application_Model_DbTable_Users extends
Zend_Db_Table_Abstract
{
/** Table name */
protected
$_name = 'users';
protected
$_primary = 'id';
}
?>
Now create a controller named AuthController.php in
application/controllers/ directory and place the following code in it
class AuthController extends Zend_Controller_Action
{
public function
loginAction()
{
}
public function
logoutAction()
{
}
public function
homeAction()
{
}
}
Now create templates files for actions. Go
application/views/scripts and create a folder named “auth” and create three
files in application/views/scripts/auth named
login.phtml
logout.phtml
home.phtml
In LoginForm.php, write the following code
<?php
class Application_Form_LoginForm extends Zend_Form
{
public function
init()
{
$username =
$this->createElement('text','username');
$username->setLabel('Username: *')->setRequired(true);
$password =
$this->createElement('password','password');
$password->setLabel('Password: *')->setRequired(true);
$signin =
$this->createElement('submit','signin');
$signin->setLabel('Sign in')->setIgnore(true);
$this->addElements(array($username,$password,$signin,));
}
}
?>
So in AuthController.php, write the following code
<?php
class Admin_AuthController extends Zend_Controller_Action
{
public function
homeAction()
{
$this->_helper->layout->setLayout('admin');
$storage = new
Zend_Auth_Storage_Session();
$data =
$storage->read();
if(!$data){
$this->_redirect('admin/auth/login');
}
$this->view->username = $data->username;
}
public function
loginAction()
{
$this->_helper->layout->setLayout('admin');
$form = new Admin_Form_LoginForm();
$this->view->form = $form;
if($this->getRequest()->isPost()){
if($form->isValid($_POST)){
$data
= $form->getValues();
$auth
= Zend_Auth::getInstance();
$dbAdapter
= Zend_Db_Table::getDefaultAdapter();
$authAdapter = new Zend_Auth_Adapter_DbTable($dbAdapter);
$authAdapter->setTableName('users')
->setIdentityColumn('username')
->setCredentialColumn('password');
$authAdapter->setIdentity($data['username'])
->setCredential($data['password']);
$result = $auth->authenticate($authAdapter);
if($result->isValid()){
$storage = new Zend_Auth_Storage_Session();
$storage->write($authAdapter->getResultRowObject());
$this->_redirect('admin/auth/home');
} else
{
$this->view->errorMessage = "Invalid username or password.
Please try again.";
}
}
}
}
public function
logoutAction()
{
$storage = new
Zend_Auth_Storage_Session();
$storage->clear();
$this->_redirect('admin/auth/login');
}
}
?>
open views/scripts/auth/home.phtml and write the following
code.
Welcome
<?=$this->username?>,<br>
Home page content .......
.....
<br>
<a
href=”<?=$this->url(array(’controller’=>’auth’,'action’=>’logout’))?>”>Logout</a>
Login functionality is get ready to use.
