Jpostcode

A Ruby implementation for Japan postcode.

Add this line to your application's Gemfile:

gem 'jpostcode'

And then execute:

$ bundle

Or install it yourself as:

$ gem install jpostcode

Basic one:

address = Jpostcode.find('154-0011')
address.prefecture      # 東京都
address.prefecture_kana # トウキョウト
address.prefecture_code # 13
address.city            # 世田谷区
address.city_kana       # セタガヤク
address.town            # 上馬
address.town_kana       # カミウマ
address.zip_code        # 1540011

When the code covers multiple addresses:

addresses = Jpostcode.find('0110951')
addresses.class # Array
addresses.each do |address|
  puts address.town
end

# => 土崎港相染町
# => 土崎港古川町

Office postcodes are also available:

address = Jpostcode.find('113-8654')
address.prefecture        # 東京都
address.prefecture_kana   # トウキョウト
address.prefecture_code   # 13
address.city              # 文京区
address.city_kana         # ブンキョウク
address.town              # 本郷
address.town_kana         # ホンゴウ
address.street            # ７丁目３−１
address.office_name       # 東京大学　本部事務組織
address.office_name_kana  # トウキヨウダイガク ホンブジムソシキ
address.zip_code          # 1138654

After checking out the repo, run bin/setup to install dependencies. Then, run rake spec to run the tests. You can also run bin/console for an interactive prompt that will allow you to experiment.

To install this gem onto your local machine, run bundle exec rake install. To release a new version, update the version number in version.rb, and then run bundle exec rake release, which will create a git tag for the version, push git commits and tags, and push the .gem file to rubygems.org.

This gem depends on kufu/jpostcode-data. After updating kufu/jpostcode-data, run git submodule foreach git pull origin master in order to pull the data.

Bug reports and pull requests are welcome on GitHub at https://github.com/kufu/jpostcode-rb.

Everyone interacting in the Jpostcode project’s codebases, issue trackers, chat rooms and mailing lists is expected to follow the code of conduct.

The gem is available as open source under the terms of the MIT License.