rake assets:precompile:nodigest in Rails 4

Question

In Rails 3 there was a rake assets:precompile:nodigest task which was compiling assets and writing them without the digest part in /public/assets directory. In Rails 4 this

Answer 1

As the best answer suggested, I recommend go reading the issue first to fully understand the background story, if you're not in a hurry. I like this idea most, https://github.com/rails/sprockets-rails/issues/49#issuecomment-24837265.

And below is my personal take, basically I took the code from the answer above. In my case I only have 2 files that I want to be non digested, widget.js and widget.css. So I use sprockets method to find the digested files and then symlink it to public folder.

# config/environments/production.rb
config.assets.precompile += %w[v1/widget.js v1/widget.css]

# lib/tasks/assets.rake
namespace :assets do
  desc 'symlink digested widget-xxx.js and widget-xxx.css to widget.js and widget.css'
  task symlink_widget: :environment do
    next if Rails.env.development? || Rails.env.test?

    digested_files = []
    # e.g. /webapps/myapp/public/assets
    assets_path = File.join(Rails.root, 'public', Rails.configuration.assets.prefix)

    %w(v1/widget.js v1/widget.css).each do |asset|
      # e.g. 'v1/widget-b61b9eaaa5ef0d92bd537213138eb0c9.js'
      logical_path = Rails.application.assets.find_asset(asset).digest_path
      digested_files << File.join(assets_path, logical_path)
    end

    fingerprint_regex = /(-{1}[a-z0-9]{32}*\.{1}){1}/
    digested_files.each do |file|
      next unless file =~ fingerprint_regex

      # remove fingerprint & '/assets' from file path
      non_digested = file.gsub(fingerprint_regex, '.')
                         .gsub(Rails.configuration.assets.prefix, '')

      puts "Symlinking #{file} to #{non_digested}"
      system "ln -nfs #{file} #{non_digested}"
    end
  end
end