从控制器向视图发送值

Question

How can I achieve this, I am sending data from view to controller then back to another form in view, then also I need to pick data on table in database and sending it to controller then to view,

Here is my controller:

 public function new_orders(){ 
   //data from views then to another form
   in views  $category_id=$this->uri->segment(3);
   $data['registration_number'] = $category_id;
   //data from model to view 
   $this->data["product_id"]=$this->select->get_product_id();
   $this->load->view("product_add", $data);
 }

My model:

function get_product_id(){
  $this->db->select_max('product_id');
  $this->db->from('products');
  $query = $this->db->get();
  return $query->result_array();
}

I want a form in view to display registration_number at the same time product_id.

In view registration_number is displayed but not product_id, it seems to be undefined variable. Help me please to solve it

Answer 1

update your code with below, use $this->data instead of $data

$this->load->view("product_add", $this->data);