Repopulating checkboxes in Codeigniter after Unsuccessful Form Validation

Question

I have a problem repopulating a set of checkboxes after an unsuccessful form validation returns the user back to the same form. Dropdown menus and text inputs could be repopulat

Answer 1

In one of my projects, I have used it as follows:

In the view I did:

$checkbox_name = 'menu_type_id[]';
$menu_type_attributes = array(
  'name'              => 'menu_type_id[]',
  'id'                => 'menu_type_id',
  'class'             => 'checkbox-custom rectangular',
  'value'             => $menu_type->get_id(), 
  'checked'           => set_checkbox('menu_type_id[]', $menu_type->get_id()),                 
  'aria-describedby'  => 'menuTypeIdHelp'
);
echo form_checkbox($menu_type_attributes);

In the controller I have the validation (FYI, you will have to have form validation on the checkbox if you want to retain the checked status of the checkbox)

$this->form_validation->set_rules('menu_type_id[]', 'Menu type(s)', 'required');

Even though your business rule does not require you to have at least one checkbox checked, you will still need to put a validation for the checkbox. For eg, you could use

$this->form_validation->set_rules('menu_type_id[]', 'Menu type(s)', 'trim'); etc.

Hope this will help some one out there, b/c this information is not available in Code Igniter's documentation.