/home/edulekha/crm.edulekha.com/application/views/admin/credit_notes/table_html.php
<?php defined('BASEPATH') or exit('No direct script access allowed');

$table_data = array(
 _l('credit_note_number'),
 _l('credit_note_date'),
 (!isset($client) ? _l('client') : array(
   'name'=>_l('client'),
   'th_attrs'=>array('class'=>'not_visible')
 )),
 _l('credit_note_status'),
 (!isset($project) ? _l('project') : array(
   'name'=>_l('project'),
   'th_attrs'=>array('class'=>'not_visible')
 )),
 _l('reference_no'),
 _l('credit_note_amount'),
 _l('credit_note_remaining_credits'),
);

$custom_fields = get_custom_fields('credit_note',array('show_on_table'=>1));
foreach($custom_fields as $field){
  array_push($table_data, [
   'name' => $field['name'],
   'th_attrs' => array('data-type'=>$field['type'], 'data-custom-field'=>1)
 ]);
}
render_datatable($table_data,'credit-notes', [], ['id'=>$table_id ?? 'credit_notes']);
?>