Formatting Rails c Output with Gem hirb

By default, the Ruby on Rails console outputs JSON as a one-line text when you execute SQL with ActiveRecord using commands like Model.all, which is very hard to read.

The gem “hirb” nicely formats the model output like this:

Hashmodel.all
  Hashmodel Load (0.5ms)  SELECT "hashmodels".* FROM "hashmodels"
+----+----------+------------+------+----------+-------+---------+-------------------------+-------------------------+
| id | title    | content    | vote | favorite | views | user_id | created_at              | updated_at              |
+----+----------+------------+------+----------+-------+---------+-------------------------+-------------------------+
| 1  | title.   | content.   |      |          |       | 1       | 2018-04-28 10:12:29 UTC | 2018-04-28 10:12:29 UTC |
| 2  | title._2 | content._2 |      |          |       | 1       | 2018-04-28 10:13:31 UTC | 2018-04-28 10:13:31 UTC |
| 3  | title.   | content.   |      |          |       | 2       | 2018-04-28 10:14:47 UTC | 2018-04-28 10:14:47 UTC |
+----+----------+------------+------+----------+-------+---------+-------------------------+-------------------------+
3 rows in set

How to Use

1. Add to Gemfile:

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

1. bundle install
2. After opening the irb console with rails c, run the Hirb.enable command to activate the gem.

In this state, if you run commands like User.all, the output will be nicely formatted.

• Reference

http://ruby-rails.hatenadiary.com/entry/20141024/1414160189