[RUBY] [Rails] Let's translate the error message into Japanese

There are times when the error text when creating a user, logging in, or posting something is kept in English in a cool way, but there are times when you want to make it easy to understand in Japanese, right?

I will tell you such a solution using Gem.

Install Gem


gem 'rails-i18n'
$ bundle install

Set error message to Japanese


module SampleApp
  class Application < Rails::Application

    config.i18n.default_locale = :ja
    config.i18n.load_path += Dir[Rails.root.join('config', 'locales', '**', '*.{rb,yml}').to_s]

Set which code corresponds to which Japanese

We will set it using a dedicated file.


$ mkdir config/locales/models
$ touch config/locales/models/ja.yml


        email:mail address
        password_confirmation:Re-enter password)

Manually add error messages errors.add

 ĽUser.errors.add (: base, "additional error") `

Of course, if you do not get out after generating an error, you can not add it, so the flow is as follows.


> user = User.new
> user.errors
> user.errors.add(:base, "Additional error")
> user.errors.full_messages
=> ["Additional error"]

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