Question

Similar to this question: Checkboxes on Rails

What’s the correct way of making radio buttons that are related to a certain question in Ruby on Rails? At the moment I have:

<div class='form_row'>     <label for='theme'>Theme:</label>     <br><%= radio_button_tag 'theme', 'plain', true %> Plain     <br><%= radio_button_tag 'theme', 'desert' %> Desert     <br><%= radio_button_tag 'theme', 'green' %> Green     <br><%= radio_button_tag 'theme', 'corporate' %> Corporate     <br><%= radio_button_tag 'theme', 'funky' %> Funky </div> 

I also want to be able to automatically check the previously selected items (if this form was re-loaded). How would I load the params into the default value of these?

Answer 1

As in this previous post, with a slight twist:

<div class='form_row'>     <label for='theme'>Theme:</label>     <% [ 'plain', 'desert', 'green', 'corporate', 'funky' ].each do |theme| %>       <br><%= radio_button_tag 'theme', theme, @theme == theme %>       <%= theme.humanize %>     <% end %> </div> 

Where

@theme = params[:theme]