working with models in CodeIgniter

I develop a dynamic model for our http://www.votebd.org website to work with database with minimum smarter code. It can insert, update, delete, select data from database through only one related function. The code example given below:
votebd_model-

class Votebd_model extends Model
{
function Votebd_model()
{
parent::Model();
}
/**
* Generates an insert sql query from the parameters
*
* @param string $table The name of the [...]