如何在codeigniter中获取更新的id

Question

i'm new to Codeigniter, but learning from web, actually i got stuck with a unknown proble.

im inserting data into the database throw the model, and fetching back the data into form.

but when i'm updating the form i want to return the updated id.

i used $user_id = $this->db->insert_id(); but this is for getting insert id,

even i tried this

 $this->db->where('id_colum', $student_id);
 $this->db->update('table_name', $data);
 $user_id = $this->db->insert_id();
 return $user_id;

help me out, Thanks for everything..

Answer 1

Just do like this:

$this->db->where('id_colum', $student_id);
$this->db->update('table_name', $data);
$updated_status = $this->db->affected_rows();

if($updated_status):
    return $student_id;
else:
    return false;
endif;

If it is updated, then return back that $student_id . :)

Answer 2

$this->db->where('id_colum', $student_id);
$updatedId = $this->db->get('table_name')->row()->id;

$this->db->where('id', $updatedId);
$this->db->update('table_name', $data);

if($this->db->affected_rows() > 0){
   return $updatedId;
} else {
   return false;
}