How do you handle environment specific javascript files in Rails?

Question

Let's say you have different settings in development vs. production ( different options, different timings for setInterval/setTimeout ). How do you handle changes between configurations?

I was thinking of using a generator, and everytime I switch between environments, I could regenerate the relevant js files. What is your approach?

user229044 · Accepted Answer · 2012-07-27 17:52:15Z

2

Very, very simply. In my layout:

<% if Rails.env.development? %>
  <%= javascript_include_tag "development.js" %>
<% end %>

answered Jul 27, 2012 at 17:52

user229044♦

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2 Comments

Geo Over a year ago

Why do I always take the complicated path? ... but still, you'd have to keep 2 versions of the same source file under version control, right?

user229044 Over a year ago

No, you'd have a development.js file which is conditionally included, and a normal application.js which is always included.

Josh Moore · Accepted Answer · 2012-07-27 17:54:55Z

1

Depending on how many of these different settings you have, I would use the ENV['RAILS_ENV'] (Rails 2.3, it might have changed in Rails 3+) to see if you are in 'production', 'development', etc.

If it's just a stylesheet or javascript file I would have these checks in the application layout. If your switches are more in depth, I would make a helper in the application helper which would tell you which environment your're code's currently in and just call that helper from your code.

answered Jul 27, 2012 at 17:54

Josh Moore

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