Rails: pass data to javascript [duplicate]

Answer 1

I wrote an article on how to pass Ruby objects to the client. Ryan Bates also has an excellent RailsCast on passing data to JS.

Add a div to your view that corresponds to your the PagesControlle#home action that will not be visible when you load the page but will contain the data stored in the Ruby objects:

# views/pages_controllers/home.html.erb
<%= content_tag :div, class: "temp_information", data: {temp: @temp} do %>
<% end %>

Load the page with this div included and view the page source. You can see your Ruby objects stored in the .temp_information div. Open up the JavaScript console to access the Ruby objects as JavaScript objects:

$('.temp_information').data('temp')

You do not need to add your JS to a JS partial, you can also use the asset pipeline.