show rest of a form if a checkbox is ckecked in ruby on rails

Question

I need to ask to my user if will pay a service with credit card...if it checked the option pay_with_card? it must show the rest of the form, that ask for other data like car

Answer 1

You can use JS for it or move pay_with_card out of form like:

<%= link_to 'pay with card', your_current_path(:pay_with_card => 1) %>
<%= form_for(...) do |f| %>
  <% if params[:pay_with_card] %>
    <%= # fields for card %>
  <% end %> 
<% end %>