AJAX AND JSON

[eluser]Krzemo[/eluser]
Some code below from top of my head (no warranty though )

Code:

//in da controller
function blog()
{
    $id = $this->input->post('id');
    if($this->_is_ajax())
    {
        $json = null;
        $json->results = $this->model_blog->get_blog($id);
        $this->output->set_header('Content-type: application/x-json');
        $d['message'] = json_encode($json);
        $this->load->view('admin/vjson_response_wrapper', $d); //this simple view just doing <?=$message?>
    }
    else
    {
      //here you put regular code for loading view if its not ajax (usefull when browser JS is off or it google indexing)
    }
}

//after Jamie
function _is_ajax() {
    return (isset($_SERVER['HTTP_X_REQUESTED_WITH']) && $_SERVER['HTTP_X_REQUESTED_WITH'] == 'XMLHttpRequest') ? TRUE : FALSE;
}

and the rest is done by javascript (me like jQuery)

Code:

//this is to be used with an event
        $.post('/admin/blog', {'id': $('input#id').val()},
                function(data){
                    $('input#username').val(data.username);
                    $('input#first_name').val(data.first_name);
                }
            , 'json');