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Just remembering, login form send two parameter: username and password. They are sent to user/auth page. So, we must build authAction() at UserController.

authAction() for data validation. The data that sent by login form will be checked at authAction(). Open your "UserController.php". Firs, load Zend/Auth.php and Zend/Auth/Adapter/DbTable.php. Please place at first line before any method():

<php
require_once 'Zend/Auth.php';
require_once 'Zend/Auth/Adapter/DbTable.php';

...
>

Add authAction() like this:

  public function authAction(){
    $request 	= $this->getRequest();
    $registry 	= Zend_Registry::getInstance();
	$auth		= Zend_Auth::getInstance(); 
	
	$DB = $registry['DB'];
		
    $authAdapter = new Zend_Auth_Adapter_DbTable($DB);
    $authAdapter->setTableName('users')
                ->setIdentityColumn('username')
                ->setCredentialColumn('password');    
	
	// Set the input credential values
	$uname = $request->getParam('username');
	$paswd = $request->getParam('password');
    $authAdapter->setIdentity($uname);
    $authAdapter->setCredential(md5($paswd));

    // Perform the authentication query, saving the result
    $result = $auth->authenticate($authAdapter);

    if($result->isValid()){
	  $data = $authAdapter->getResultRowObject(null,'password');
	  $auth->getStorage()->write($data);
	  $this->_redirect('/user/userpage');
	}else{
	  $this->_redirect('/user/loginform');
	}
 }

First, load database adapter from registry (line 3, 6). If you still don't understand about this code, please read tutorial about Zend Framework Database and Zend Framework Registry.

Then, define authentication adapter:

$authAdapter = new Zend_Auth_Adapter_DbTable($DB);

Next, we define table name, column that contains username and password.

    $authAdapter->setTableName('users')
                ->setIdentityColumn('username')
                ->setCredentialColumn('password');  

Next, we catch HTTP parameter that contains username and password:

	$uname = $request->getParam('username');
	$paswd = $request->getParam('password');
    $authAdapter->setIdentity($uname);
    $authAdapter->setCredential(md5($paswd));

Next, do authentication:

    $result = $auth->authenticate($authAdapter);

    if($result->isValid()){
	  $data = $authAdapter->getResultRowObject(null,'password');
	  $auth->getStorage()->write($data);
	  $this->_redirect('/user/userpage');
	}else{
	  $this->_redirect('/user/loginform');
	}
 }

If valid user, we will save user data at session using:

	  $data = $authAdapter->getResultRowObject(null,'password');
	  $auth->getStorage()->write($data);

Then, page will be redirect to protected page (named userpage in this tutorial). Next post, we will talk about protected page. It is simple, isn't it?

Ok, this is our complete UserController:

<?php

require_once 'Zend/Controller/Action.php';
require_once 'Zend/Auth.php';
require_once 'Zend/Auth/Adapter/DbTable.php';

class UserController extends Zend_Controller_Action
{

  
  public function loginFormAction()
  {
    $request = $this->getRequest();  
	$this->view->assign('action', $request->getBaseURL()."/user/auth");  
    $this->view->assign('title', 'Login Form');
    $this->view->assign('username', 'User Name');	
    $this->view->assign('password', 'Password');	
	    
  }
  
  public function authAction(){
    $request 	= $this->getRequest();
    $registry 	= Zend_Registry::getInstance();
	$auth		= Zend_Auth::getInstance(); 
	
	$DB = $registry['DB'];
		
	$authAdapter = new Zend_Auth_Adapter_DbTable($DB);
    $authAdapter->setTableName('users')
                ->setIdentityColumn('username')
                ->setCredentialColumn('password');    
	
	// Set the input credential values
	$uname = $request->getParam('username');
	$paswd = $request->getParam('password');
    $authAdapter->setIdentity($uname);
    $authAdapter->setCredential(md5($paswd));

    // Perform the authentication query, saving the result
    $result = $auth->authenticate($authAdapter);

    if($result->isValid()){
      //print_r($result);	
	  $data = $authAdapter->getResultRowObject(null,'password');
	  $auth->getStorage()->write($data);
	  $this->_redirect('/user');
	}else{
	  $this->_redirect('/user/loginform');
	}
    	
  }
  
  
  public function nameAction()
  {
  
    $request = $this->getRequest();
    $this->view->assign('name', $request->getParam('username'));
    $this->view->assign('gender', $request->getParam('gender'));	  
		
    $this->view->assign('title', 'User Name');
  }  
  
  public function registerAction()
  {
    $request = $this->getRequest();
	
	$this->view->assign('action',"process");
    $this->view->assign('title','Member Registration');
	$this->view->assign('label_fname','First Name');
	$this->view->assign('label_lname','Last Name');	
	$this->view->assign('label_uname','User Name');	
	$this->view->assign('label_pass','Password');
	$this->view->assign('label_submit','Register');		
	$this->view->assign('description','Please enter this form completely:');		
  }
  
  public function editAction()
  {
    $registry = Zend_Registry::getInstance();  
	$DB = $registry['DB'];
	
    $request = $this->getRequest();
	$id 	 = $request->getParam("id");
	
	$sql = "SELECT * FROM `user` WHERE id='".$id."'";
	$result = $DB->fetchRow($sql);
	
	$this->view->assign('data',$result);
	$this->view->assign('action', $request->getBaseURL()."/user/processedit");
    $this->view->assign('title','Member Editing');
	$this->view->assign('label_fname','First Name');
	$this->view->assign('label_lname','Last Name');	
	$this->view->assign('label_uname','User Name');	
	$this->view->assign('label_pass','Password');
	$this->view->assign('label_submit','Edit');		
	$this->view->assign('description','Please update this form completely:');		
  }  
  
  public function processAction()
  {
  
    $registry = Zend_Registry::getInstance();  
	$DB = $registry['DB'];
	
    $request = $this->getRequest();
	$data = array('first_name' => $request->getParam('first_name'),
	              'last_name' => $request->getParam('last_name'),
				  'user_name' => $request->getParam('user_name'),
				  'password' => md5($request->getParam('password'))
	              );
    $DB->insert('user', $data);
	
    $this->view->assign('title','Registration Process');
	$this->view->assign('description','Registration succes');  	
	
  }
  
  public function listAction()
  {
    
    $registry = Zend_Registry::getInstance();  
	$DB = $registry['DB'];
	
	$sql = "SELECT * FROM `user` ORDER BY user_name ASC";
	$result = $DB->fetchAssoc($sql);
	
    $this->view->assign('title','Member List');
	$this->view->assign('description','Below, our members:');
	$this->view->assign('datas',$result);		
  
  }
  
  public function processeditAction()
  {
  
    $registry = Zend_Registry::getInstance();  
	$DB = $registry['DB'];
	
	$request = $this->getRequest();
	
	$data = array('first_name' => $request->getParam('first_name'),
	              'last_name' => $request->getParam('last_name'),
				  'user_name' => $request->getParam('user_name'),
				  'password' => md5($request->getParam('password'))
	              );
    $DB->update('user', $data,'id = '.$request->getParam('id'));	
    
    $this->view->assign('title','Editing Process');
	$this->view->assign('description','Editing succes');  	
		
  }
  
  public function delAction()
  {
    $registry = Zend_Registry::getInstance();  
	$DB = $registry['DB'];
	
	$request = $this->getRequest();
	
    $DB->delete('user', 'id = '.$request->getParam('id'));	
	
    $this->view->assign('title','Delete Data');
	$this->view->assign('description','Deleting succes');  		  
    $this->view->assign('list',$request->getBaseURL()."/user/list");  
  
  }
  
}
?>