How to insert corporate details into database

Show me you table structure with all column names etc.;

Also check to make sure you are getting the users name.

Ive found the problem. $user needs to be defined in the Model as follows;

PHP Code:

public function update_product($product)
    {
    $user = $this->session->userdata('user_name');
    $this->db->where('user_name', $user);
    $data = array('temp_1'=> $product);
    $this->db->update('tbl_members', $data);
    }