Compile assets and push them automatically when run rake assets:precompile

custom_compiler.rb

class AssetsCompiler < Sprockets::StaticCompiler
  def precompile(paths)
    ensure_clean_git
    Rake::Task["assets:clean"].invoke
    super
    commit_compiled_assets
    push
  end

  def ensure_clean_git
    raise "Can't deploy without a clean git status." if git_dirty?
  end

  def commit_compiled_assets
    run "git add -u && git add . && git commit -am 'Compiled assets'"
  end

  def push
    run "git push"
  end

  private

  def run(command)
    puts "+ Running: #{command}"
    puts "-- #{system command}"
  end

  def git_dirty?
    `[[ $(git diff --shortstat 2> /dev/null | tail -n1) != "" ]]`
    dirty = $?.success?
  end
end

Rails.application.config.assets.compiler = AssetsCompiler