How to pass a javascript variable into a erb code in a js view?

Question

I have this Javascript view in my Rails 3 project:

app/views/expenses/new_daily.js.erb

var i = parseInt($(\'#daily\').attr(\'data-num\')) + 1;
//$(\'         


        

Answer 1

Check out the gon gem. https://github.com/gazay/gon

It gives you a simple object you can pass variables to that will be available to your scripts via window.gon

Also referenced here http://railscasts.com/episodes/324-passing-data-to-javascript