Jika kotak centang dicentang formulir terbuka
<div class="form-group" id="checkbox">
<%= f.check_box :paydeliver %>
<%= f.label :paydeliver, "Pay $25" %>
</div>
<div id="delivery" style="display:none;">
<div class="form-group">
<%= f.label :addysdeliver, "Delivery address"%>
<%= f.text_field :addysdeliver, class: "form-control"%>
</div>
</div>
<%= f.submit "Go!", class: "btn btn-primary btn-large btn-block" %>
<% end %> #end of form
Good Grebe