Code Igniter doesn't show ajax based sent data

PHP
1

Hi!
Following is my ajax code:


jQuery.ajax({ 
    'type': 'POST',
    'dataType': 'json',                     
    'contentType': 'application/json; charset=utf-8', 
    'url': 'http://localhost/main/user/view',                      
    'data': ({'active' : 'active_value'}),
    'success': function(data){
    alert('Good Return Text');
    }                 
});

My CI controller’s method code is as follows:


function view()
{    
    if($this->input->is_ajax_request()){
    var_dump($this->input->post('active'));  
       } 
}

The Firebug is showing following post resuest :

active=active_value

The Firebug is showing following response :

bool(false)

Can someone guide me what Iam doing wrong.

NOTE: CI version: 2.0 , jQuery version: 1.5

Thanks in advance