Do Not Cache Rails/Sprockets Assets In Development

sprockets.rb

# In config/initializers/sprockets.rb
 
require 'sprockets'
require 'sprockets/server'
 
Sprockets::Server.class_eval do
 
  private
 
  def headers_with_rails_env_check(*args)
    headers_without_rails_env_check(*args).tap do |headers|
      if Rails.env.development?
        headers["Cache-Control"]  = "no-cache"
        headers.delete "Last-Modified"
        headers.delete "ETag"
      end
    end
  end
  alias_method_chain :headers, :rails_env_check
 
end