How to maintain two tables data in single view page using codeigniter

[![enter image description here][1]][1][enter image description here][2]I have two tables invoice and invoice_description, The column invoice_no is common for both tables, I want to fetch the data from invoice table name,address,invoice_no and next table invoice_description I want to fetch product description, quantity, price and more.
this is my table structure

                        invoice
         --------------------------------------
          name   bill_no   invoice_no   address    price
           adi     1        2           adasdasd     12
           abc     2        3           adasdas       13


                       invoice_description
        -----------------------------------------------------
               product   invoice_no  quantity 
                a          2          1
                b          2          2
                c          3          3

     i wana output like when i pass invoice_no 2
               invoice_no:-2     name- adi
                product          quantity
                 a                 1
                 b                 2

This is my controller:-

public function invoice($id)
{
            //echo $id;
        $this->load->database();  
             //load the model  
        $this->load->model('useradmin');  
            //$invoice=$this->useradmin->selectdealer($id);  
            //$invoicedes=$this->useradmin->selectdealer1($id);  
            //$data['invoice']=$invoice;
            //$data['invoicedes']=$invoicedes;
            //$this->load->view('envoice',$data);  
          //
        $query = $this->useradmin->selectdealer($id);
        $ids = $this->useradmin->selectdealer1($id);  
        $data['dealers'] =  $query;
        $data['id'] = $ids;                     
        $this->load->view('envoice',$data);
    }

}

My model is:-

public function selectdealer($id)  
{  
    //data is retrive from this query  
    //echo $id;           
    //$this->db->select('*');  
    //$this->db-from('invoice_description');
    $this->db->where('invoice_no', $id);
    $query = $this->db->get('invoice_description');
    return $query->result();
}   
public function selectdealer1($id)  
{  
    //data is retrive from this query  
    //echo $id;
    $query = $this->db->get('invoice');  
    $this->db->where('invoice_no', $id);
    return $query->result();    
}   

I want invoice no, name, and address from invoice table and more than one product description from invoice_description table

I m trying my view page is

invoice_no :-123 name:-xyzx

product des price quantity asdaf 12 10 asafsa 12 13