[RUBY] Japanese localization of error messages (rails)

rails-i18n(Gem) A Gem that can handle Japanese.

locale file

A file required to translate all error messages into Japanese, and a file that can be used in various languages. By creating a file for Japanese localization in this, you can translate English into Japanese.

Implementation method

① Japanese language setting


require_relative 'boot'

require 'rails/all'


module Asakatu5757
  class Application < Rails::Application
    config.load_defaults 6.0
    config.i18n.default_locale = :ja

    config.time_zone = 'Tokyo'

The description added this time is "** config.i18n.default_locale =: ja **", and it can be made into the standard language Japanese.

② Introduction of rails-i18n


gem 'rails-i18n'


% bundle install

③ Create a file for Japanese localization in locales and edit it.

Example) When the nickname column of the User model is translated into Japanese.



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