Ajax and Jquery

[eluser]Aaron_owen[/eluser]
if anyone was wondering..... fixed it.

The model needs to be like this

Code:

function username_exists($username){

        $this->db->where('username', $this->input->post('username'));
        $query = $this->db->get('users');
            if($query->num_rows == 1)
            {
            return true;
            }            
        }