Roots Bedrock: Copy production assets for Roots theme

deploy.addendum.rb

# The Roots theme by default does not check production assets into Git, so
# they are not deployed by Capistrano when using the Bedrock stack. The
# following will compile and deploy those assets. Copy this to the bottom of
# your config/deploy.rb file.

# Based on information from this thread:
# http://discourse.roots.io/t/capistrano-run-grunt-locally-and-upload-files/2062/7
# and specifically this gist from christhesoul:
# https://gist.github.com/christhesoul/3c38053971a7b786eff2

# First we need to set some variables so we know where things are. You should
# only have to modify :theme_path here, :local_app_path and :local_theme_path
# are set from that.
set :theme_path, Pathname.new('web/app/themes/roots')
set :local_app_path, Pathname.new(File.dirname(__FILE__)).join('../')
set :local_theme_path, fetch(:local_app_path).join(fetch(:theme_path))

# Next we list the production assets we want to deploy. We could change things
# around so that all our production assets are generated into a single
# directory and upload that, but it would involve touching a lot of things.
# Listing them each explicitly keeps our changes to just the deployment
# configuration.
set :production_assets, [
  'assets/css/main.min.css',
  'assets/js/scripts.min.js',
  'assets/js/vendor/modernizr.min.js',
  'assets/vendor/jquery/dist/jquery.min.js',
  'assets/vendor/bootstrap/fonts/glyphicons-halflings-regular.eot',
  'assets/vendor/bootstrap/fonts/glyphicons-halflings-regular.woff',
  'assets/vendor/bootstrap/fonts/glyphicons-halflings-regular.ttf',
  'assets/vendor/bootstrap/fonts/glyphicons-halflings-regular.svg'].map {|path| Pathname.new(path) }

namespace :deploy do

  # The :compile_assets task will run 'grunt build' in our theme directory
  # to build the production assets.
  task :compile_assets do
    run_locally do
      within fetch(:local_theme_path) do
        execute :grunt, :build
      end
    end
  end

  # The :copy_assets task first runs :compile_assets, then goes through the
  # list of production assets and uploads them to the server. It also creates
  # the target directories if necessary.
  task :copy_assets do
    invoke 'deploy:compile_assets'
    on roles(:web) do
      fetch(:production_assets).each do |path|
        execute :mkdir, "-p", release_path.join(fetch(:theme_path)).join(path.dirname())
        upload! fetch(:local_theme_path).join(path).to_s, release_path.join(fetch(:theme_path)).join(path)
      end
    end
  end
end

# This tells Capistrano to copy our production assets to the server after it
# has created the release directory but before it has published the release.
before "deploy:updated", "deploy:copy_assets"