如何从控制器到模型访问变量

Question

hello i have a problem with CodeIgniter. i want to access a variable from controller to model because my query need id this is my controller code

<?php
class C_Moshakhsat extends CI_Controller{
    public function index(){
        $data['Todos']=$this->M_Moshakhsat->moshakhsat_list();
        $this->load->view('V_Moshakhsat',$data);
        $product_id = $this->input->get('id', TRUE);    
    }
}

?>

and this is my model code

<?php
class M_Moshakhsat extends CI_Model{
    public function moshakhsat_list(){

        $query="SELECT customer_name , order_date , saled_product_price , saled_product_quantity, product_name ,saled_product_price*saled_product_quantity as ss FROM customer c ,orders o ,order_detail d , product p WHERE p.produt_id=d.product_id and o.order_id=d.order_id and c.customer_id=o.order_id and o.order_id=product_id";
        $res=$this->db->query($query);
        return $res->result();

    }   

        }

?> i want to get id from url and pass them in to query i don't know how?

Answer 1

Just send the id as function argument to the model:

class C_Moshakhsat extends CI_Controller{
    public function index(){
        $product_id = $this->input->get('id', TRUE);
        $data['Todos']=$this->M_Moshakhsat->moshakhsat_list($product_id);
        $this->load->view('V_Moshakhsat',$data);

    }
}

And in the model:

 public function moshakhsat_list($product_id)
    {
      //mysql connections
    }

You should parse the sql query to avoid the Mysql injection for this use the CI query builder class for making mysql queries .