how to pass post_id to add comment as hidden

[leela]

Hai,

 

I did the posts module in cakephp.Able to add,edit,delete functions..

Now i was trying to add comments to posts already existed..

How to pass post_id ( foreign key to columns table )as hidden to comments_controller -->add() function ..

 

my code is

 

class commentsController extends AppController
{
var $helpers=array('Html','Form');
var $name='Comments';

function add()
{
	if(empty($this->data))
	{
		$this->set('comment',$this->Comment->read());
	}
	else 
	{
		if($this->Comment->save($this->data))
		{
			$this->Session->setFlash('The comment for this has been saved');
			$this->redirect(array('action'=>'index'));
		}
		else
		{
			$this->Session->setFlash('Comment is not saved');
		}
	}
}

}
?>

 

and views/comments/add.ctp is

<h2>Add Comments</h2>

<?php echo $form->create('Comment',array('action'=>'add'));?>
<?php echo $form->input('name');?>
<?php echo $form->input('email',array('type'=>'email'));?>
<?php echo $form->input('text');?>
<?php echo $form->input('post_id',array('type'=>'hidden')) ;?>

<?php echo $form->end('Add Comment');?>

 

the url is http://localhost/cakephp/posts/  ---->

 

Id Title Body View Delete Action Action

1 The title This is the post body.sdfsdf View Delete AddComment ViewComment

 

When i click AddComment[/b

 

the url is ::::::::  http://localhost/cakephp/comments/add/1

 

here is the form to add title,text,comment ----------->When i submit ,it is giving .........

 

SQL Error: 1048: Column 'post_id' cannot be null

INSERT INTO `comments` (`name`, `email`, `text`, `post_id`, `created`) VALUES ('ss', 'ss@gmail.com', 'sample text ', NULL, '2011-07-20 11:26:50')

 

Post_id is not passing ............How can i pass this post_id,so that i can do add comment

 

 

Thanks in advance