pry: Command to show the I18n translations tree for the given path

pry-show_translation.rb

Pry::Commands.create_command "show-translation" do
  group       "Rails"
  description "Show translations for the given path"

  def options(opt)
    opt.banner unindent <<-BANNER
      Usage: show-translation [ -y | -r ] <lang.translated.path>

      Show translations for the given path.
    BANNER

    opt.on :y, :yaml,   "Format output as yaml",           argument: false
    opt.on :r, :reload, "Reload translations before show", argument: false
  end

  def process
    I18n.reload! if opts.reload?

    if args.empty?
      output.puts opts
      return
    end

    result_dict = splitted_args.reduce(translations) do |dict, key|
      dict.fetch(key.to_sym) { {} }
    end

    if opts.yaml? || !defined?(AwesomePrint)
      output.puts(result_dict.deep_stringify_keys.to_yaml)
    else
      output.puts(result_dict.ai)
    end
  end

  private

  def translations
    I18n.backend.instance_variable_get(:@translations)
  end

  def splitted_args
    args.flat_map { |val| val.split('.') }
  end
end