public function update()
 {
     $id = $_POST[tpl_trainer::trainer() . '_' . tpl_trainer::id() . '_update'];
     $name = $_POST[tpl_trainer::trainer() . '_' . tpl_trainer::name() . '_update'];
     $id_companies = $_POST[tpl_trainer::trainer() . '_' . tpl_trainer::id_companies() . '_update'];
     $id_department = $_POST[tpl_trainer::trainer() . '_' . tpl_trainer::id_department() . '_update'];
     $id_section = $_POST[tpl_trainer::trainer() . '_' . tpl_trainer::id_section() . '_update'];
     $db = new data_base(tpl_trainer::trainer(), array(tpl_trainer::name() => $name, tpl_trainer::id_companies() => $id_companies, tpl_trainer::id_department() => $id_department, tpl_trainer::id_section() => $id_section, tpl_trainer::date_in() => date_time::Date_time_24()), array(tpl_trainer::id() => $id));
     $results = $db->change();
     if ($results) {
         echo json_encode(array('valid' => 1, 'title' => 'Successfully !!', 'massage' => 'I\'ve been Update ' . $name));
     } else {
         echo json_encode(array('valid' => 0, 'title' => 'Oops !!', 'massage' => 'Was not Update ' . $name . ', please try again'));
     }
 }
                <table id="table" data-toggle="table"
                       data-url="<?php 
echo site_url('admin/trainer/ajax_all');
?>
"
                       data-cache="false" data-height="400" data-show-refresh="true" data-show-toggle="true"
                       data-show-columns="true" data-pagination="true" data-page-list="[5, 10, 20, 50, 100, 200]"
                       data-search="true" data-flat="true" data-toolbar="#toolbar">
                    <thead>
                    <tr>
                        <th data-field="<?php 
echo tpl_trainer::id();
?>
" data-halign="center" data-sortable="true"> id</th>
                        <th data-field="<?php 
echo tpl_trainer::name();
?>
"
                            data-formatter="operate<?php 
echo tpl_trainer::trainer();
?>
"
                            data-halign="center" data-sortable="true"> name
                        </th>
                        <th data-field="<?php 
echo tpl_companies::companies() . '_' . tpl_companies::id();
?>
" data-halign="center" data-sortable="true">
                            companies
                        </th>
                        <th data-field="<?php