Planet CakePHP

Hi, I'm trying to perform validation in the login page for the name,email and password fields. If the input fails validation,the error message should be displayed.

But here,when I fill in the details and submit, it is redirected to the next page. Only the value is not saved in the database.

Why is the message not displayed?

This is my model:

 class User extends AppModel {
    var $name = 'User';
    var $validate = array(
			'name' => array(
					'alphaNumeric' => array(
								'rule' => 'alphaNumeric',
								'required' => true,
								'message' => 'Alphabets and numbers only'
								),
					'between' => array(
								'rule' => array('between', 5, 15),
								'message' => 'Between 5 to 15 characters'
							)
					),
			'password' => array(
						'rule' => array('minLength', '8'),
						'message' => 'Mimimum 8 characters long'
						),
			'email_id' => 'email'
 		    );

function loginUser($data)
{
	$this->data['User']['email_id']=$data['User']['email_id'];	
	$this->data['User']['password']=$data['User']['password'];			

	$login=$this->find('all');
	foreach($login as $form):
		if($this->data['User']['email_id']==$form['User']['email_id'] && $this->data['User']['password']==$form['User']['password'])
		{
			$this->data['User']['id']= $this->find('all',array('fields' => array('User.id'),
								'conditions'=>array('User.email_id'=> $this->data['User']['email_id'],'User.password'=>$this->data['User']['password'])		
								));
			$userId=$this->data['User']['id'][0]['User']['id'];

			return $userId;

		}
	endforeach;
}

function registerUser($data)
{
	if (!empty($data)) 
	{
		$this->data['User']['name']=$data['User']['name'];
		$this->data['User']['email_id']=$data['User']['email_id'];	
		$this->data['User']['password']=$data['User']['password'];
		if($this->save($this->data))
		{
			$this->data['User']['id']= $this->find('all',array('fields' => array('User.id'),
								'order' => 'User.id DESC' 		
								));
			$userId=$this->data['User']['id'][0]['User']['id'];
			return $userId;
		}
	}
}

}

This is my controller:

class UsersController extends AppController 
{
var $name = 'Users';
var $uses=array('Form','User','Attribute','Result');
var $helpers=array('Html','Ajax','Javascript','Form');

function login()
   {

	$userId=$this->User->loginUser($this->data);
	if($userId>0){
		$this->Session->setFlash('Login Successful.');
		$this->redirect('/forms/homepage/'.$userId);
		break;
	}
	else{
		$this->flash('Login Unsuccessful.','/forms');
	}
}

function register()
{	
	$userId=$this->User->registerUser($this->data);  
	$this->Session->setFlash('You have been registered.');
	$this->redirect('/forms/homepage/'.$userId);            			
}

}

EDIT

Why is the message,example,"Minimum 8 characters long", is not being displayed when give less than 8 characters in the password field?

 <!--My view file File: /app/views/forms/index.ctp   -->
 <?php 
echo $javascript->link('prototype.js');
echo $javascript->link('scriptaculous.js');
echo $html->css('main.css');
?>

  
 
  
 formBuildr 
  

  

  
Register
  <?php
echo $form->create('User',array('action'=>'register'));
echo $form->input('User.name');
echo $form->error('User.name','Name not found');
echo $form->input('User.email_id');
echo $form->error('User.email_id','Email does not match');
echo $form->input('User.password');
echo $form->end('Register');
  ?>
  

  

  
Login
  <?php
echo $form->create('User',array('action'=>'login'));
echo $form->input('User.email_id');
echo $form->input('User.password');
echo $form->end('Login');
  ?>