ruby – I want to display the names of nested models in Rails in Japanese (i18n)

Question: Question:

I don't know how to change the model name of the error message displayed when the value is invalid in form to Japanese.

class Ranking < ActiveRecord::Base
  has_many :ranking_posts, dependent: :destroy
  accepts_nested_attributes_for :ranking_posts
  validates_associated :ranking_posts
end

When

class RankingPost < ActiveRecord::Base
  belongs_to :ranking
  default_scope -> { order('rank DESC') }
  validates :title, :description, :rank, presence: true
end

As a result, I created a form that can update Ranking and Ranking Post at the same time. And if you send a form with an invalid value on the Ranking Post side, the error message "Ranking posts is an invalid value." Is displayed. I would like to know how to translate this "Ranking posts" into Japanese.

with i18n

ja:
  activerecord:
    models:
      ranking/ranking_posts: すべてのランキング記事

But it didn't apply. I would like to know how the nested model name can be translated into Japanese.

Answer: Answer:

Since it is the name of the ranking_posts attribute of the ranking model, I think it is better to write the setting under activerecord.models instead of activerecord.attributes . It looks like the following.

ja:
  activerecord:
    attributes:
      ranking:
        ranking_posts: すべてのランキング記事

It is around 4.6 of http://railsguides.jp/i18n.html .