radio button to unhide hidden field

hello friends, before i ask some question i just want to appreciate this is the best CRUD generator for CI/PHP. I'm using this for all of my website.

so my question is, i have some fields in my controller :

$crud->display_as('id', 'No')
                    ->display_as('name', 'Name')
                    ->display_as('address', 'Address')
                    ->display_as('phone', 'Phone')
                    ->display_as('date', 'Date');

1. I want to hide the 'date' field

2. I want to add radio button with two choice ('show','hide')

3. If the show radio button clicked will show the 'date' field

4. if I clicked the hide button it will hide again the 'date' field

I appreciates all help that come, Thank you very much

radio button to unhide hidden field

cahyonegoro