Checkbox Array Validation Codeigniter -

on form each row has it's on submit button , need check check box before can delete else should through error.

question: checkbox in_array if not check box , press submit not through codeigniter form_validation error. have used $this->form_validation->set_rules('selected[]', 'selected', 'required'); error not showing up.

what best solution in making getting form_validation error work?

view

<?php echo form_open('admin/design/layout/delete'); ?> <?php echo validation_errors('<div class="alert alert-danger">', '</div>'); ?> <div class="table-responsive">     <table class="table table-striped table-bordered table-hover">         <thead>             <tr>                 <td style="width: 1px;" class="text-center">                     <input type="checkbox" onclick="$('input[name*=\'selected\']').prop('checked', this.checked);" />                 </td>                 <td>layout name</td>                 <td class="text-right">action</td>             </tr>            </thead>         <tbody>             <?php if ($layouts) { ?>                 <?php foreach ($layouts $layout) { ?>                     <tr>                         <td class="text-center"><?php if (in_array($layout['layout_id'], $selected)) { ?>                                 <input type="checkbox" name="selected[]" value="<?php echo $layout['layout_id']; ?>" checked="checked" />                             <?php } else { ?>                                 <input type="checkbox" name="selected[]" value="<?php echo $layout['layout_id']; ?>" />                             <?php } ?>                         </td>                         <td><?php echo $layout['name']; ?></td>                         <td class="text-right">                             <button type="submit" class="btn btn-danger">delete</button>                             <a href="<?php echo $layout['edit']; ?>" class="btn btn-primary">edit</a>                         </td>                     </tr>                 <?php } ?>             <?php } else { ?>              <?php } ?>         </tbody>     </table> </div>  </div> <?php echo form_close(); ?> 

controller function

public function delete() {      $this->load->library('form_validation');      $this->form_validation->set_rules('selected[]', 'selected', 'required');      if ($this->form_validation->run() == false) {         echo "error";         $this->get_list();     } else {         $selected_post = $this->input->post('selected');         if (isset($selected_post)) {             foreach ($selected_post $layout_id) {             }             echo "deleted  $layout_id";             $this->get_list();         }                } } 

it won't validate per field. selected[] selector in rules means, when submit form, should @ least 1 selected item. have submit buttons, independently submit form, no matter in dom, , checkboxes selected. same, have 1 submit button @ end.

i add javascript, , set if checkbox not selected, can disable field:

<script>     $(function() {         $('input:checkbox').on('change', function() {             if($(this).is(':checked')) {                 $(this).closest('tr').find('button:submit').prop('disabled', false);             }             else {                 $(this).closest('tr').find('button:submit').prop('disabled', true);             }         })     }) </script> 

and add disabled submit buttons:

<button type="submit" class="btn btn-danger" disabled>delete</button>

it's not server side validation, can achieve prevent push button next unchecked checkboxes.