[tofayelahmed]

I have two input fieds.

1. accesion_no_first
2. accesion_no_last

The "accesion_no_first" is always less than "accesion_no_last" when I inserting data.
How I create validation?
Please help.

[web-johnny]

You can use the set_rules with a custom callback for that. You can see an example at: /topic/71-different-form-validation-rules-for-insert-and-update/page__view__findpost__p__262

[tofayelahmed]

Thanx for your reply.
I use set_rules with a custom callback, but not work.
My code is below:

function book_set()

{

   ...............................

   ...............................

   $this->grocery_crud->set_rules('acc_first', 'Acc first','trim|required|numeric|callback_bookacc_first_check');

   .......................................................

   $output = $this->grocery_crud->render();

   $this->setup_output($output);

}

public function bookacc_first_check($str)

{

  $id = $this->uri->segment(4);

  if(!empty($id) && is_numeric($id))

  {

   $acc_first_old = $this->db->where("id",$id)->get('lib_book')->row()->acc_first;

   $this->db->where("acc_no !=",$acc_first_old);

  }



  $num_row = $this->db->where('acc_no',$str)->get('lib_book')->num_rows();

  if ($num_row >= 1)

  {

   $this->form_validation->set_message('bookacc_first_check', 'The Accession First Number already exists in Book');

   return FALSE;

  }

  else

  {

   $num_row1 = $this->db->where('acc_no',$str)->get('lib_journal')->num_rows();

   if ($num_row1 >= 1)

   {

	$this->form_validation->set_message('bookacc_first_check', 'The Accession First Number already exists in Journal');

	return FALSE;

   }

   else

   {

// here the accepted validation start  

$acc_last =  $post_array['acc_last'];

	if ($str > $acc_last)

	{

	 $this->form_validation->set_message('bookacc_first_check', 'The Acc no. first always less than the Acc no. last');

	 return FALSE;

	}

	else

	{

	 return TRUE;

	}

   }

  }

}

If i input the acc_first which is greater than acc_last or vice versa , the validation message is same.

[web-johnny]

I think you have to change the:

$acc_last =  $post_array['acc_last'];

to

$acc_last =  $_POST['acc_last'];

and

$this->form_validation->set_message('bookacc_first_check', '...');

to

$this->form_validation->set_message('acc_first', '...');

[tofayelahmed]

Thanx Johnny.
I get the desire output only change the
$acc_last = $post_array['acc_last']; to
$acc_last = $_POST['acc_last'];
Thanx again.