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Hirbを使ってRailsコンソール上のモデル出力を表形式に整形

Last updated at Posted at 2015-10-02

rails console上でモデルの内容を出力したら、配列のように出力されてみにくい。Hirbを使用することで、データベースのコンソール上で実行したような表形式での出力を整形することができる。

Hirbを利用できるようにする

GemfileにHirbを追加する

group :development, :test do
  gem 'hirb'
  gem 'hirb-unicode'
end

Bundlerでgemをインストールする

bundle install

デフォルトではHirdは有効になっていないので、Railsコンソールを開いてHirbを有効する。
有効にする:Hirb.enable
無効にする:Hirb.disable

$ rails c
Loading development environment (Rails 4.2.3)
irb: warn: can't alias context from irb_context.
irb(main):001:0> MasterJob.first
  MasterJob Load (0.3ms)  SELECT  `master_jobs`.* FROM `master_jobs`  ORDER BY `master_jobs`.`id` ASC LIMIT 1
=> #<MasterJob id: 1, name: "取締役", deleted_at: nil, created_at: "2015-09-09 02:03:25", updated_at: "2015-09-09 02:03:25">
irb(main):002:0> Hirb.enable
=> true
irb(main):003:0> MasterJob.first
  MasterJob Load (0.3ms)  SELECT  `master_jobs`.* FROM `master_jobs`  ORDER BY `master_jobs`.`id` ASC LIMIT 1
+----+--------+------------+---------------------------+---------------------------+
| id | name   | deleted_at | created_at                | updated_at                |
+----+--------+------------+---------------------------+---------------------------+
| 1  | 取締役 |            | 2015-09-09 11:03:25 +0900 | 2015-09-09 11:03:25 +0900 |
+----+--------+------------+---------------------------+---------------------------+
1 row in set
irb(main):004:0>

PryでHirb

railsプロジェクトのルートディレクトリに.pryrcファイル作成する(Gemfileと同じ場所)。
.pryrcに下記を書いて保存すれば使用できるようになっていまいす。

begin
  require 'hirb'
rescue LoadError
  # Missing goodies, bummer
end

if defined? Hirb
  # Slightly dirty hack to fully support in-session Hirb.disable/enable toggling
  Hirb::View.instance_eval do
    def enable_output_method
      @output_method = true
      @old_print = Pry.config.print
      Pry.config.print = proc do |*args|
        Hirb::View.view_or_page_output(args[1]) || @old_print.call(*args)
      end
    end

    def disable_output_method
      Pry.config.print = @old_print
      @output_method = nil
    end
  end

  Hirb.enable
end
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