Question

I am using Ruby on Rails 3.1 and I would like to know how to correctly handle internationalization related to “resources of resources”. That is, …

… in my config/routes.rb file I have:

resources :users do
  resource :account
end

… in my app/models/users/account.rb file I have:

class Users::Account < ActiveRecord::Base
  validates :firstname,
    :presence => true
  ...
end

… in my config/locales/models/user/account/en.yml file I have:

en:

  activerecord:
    errors:
      messages:
        presence: "custom presence message - english"

… in my config/locales/models/user/account/it.yml file I have:

it:

  activerecord:
    errors:
      messages:
        presence: "custom presence message - italian"

The above code doesn’t display in front end the “custom presence message“ (it still displays the default RoR presence message: can not be blank). Furthermore if in my app/models/users/account.rb file I use:

class Users::Account < ActiveRecord::Base
  validates :firstname,
    :presence => { :message => t(:presence) } # Here I try to use the i18n helper method
  ...
end

I get the following error:

NoMethodError (undefined method `t' for #<Class:0x000001075bbc80>)

Why I get the NoMethodError?

Is the problem related to how I am organizing in directories my locale files? At this time (as stated in the official RoR guide) my file system is:

config/locales/defaults/en.yml
config/locales/defaults/it.yml
config/locales/models/user/en.yml
config/locales/models/user/it.yml
config/locales/models/user/account/en.yml
config/locales/models/user/account/it.yml

In few words, I would like to display my “custom presence message” only on validating “resources of resources” kind of Users::Account. How can I do that?

---

I also tried to state the following code in the config/locales/models/user/account/en.yml file

en:

  activerecord:
    errors:
      models:
        user:
          account:
            attributes:
              firstname:
                blank: "custom presence message - english"

but it doesn’t work. Anyway the following works but I need different translations for different attributes (as I tried to state in the previous code example):

en:

  activerecord:
    errors:
      messages:
        blank: "custom presence message - english"

Answer 1

ok, due to this: https://github.com/rails/rails/issues/1402 last comment nested model look-up is removed

so try maybe something like

activerecord:
    errors:
      models:
        users:
          account:
            attributes:
              first_name:
                blank: "You should fill up first name field to complete that"

and change inside :message hash to

I18n.t(:"activerecord.errors.models.users.account.attributes.first_name.blank")

and try avoid nested models 😉

update:

after some debuging this will work:

  activerecord:
    errors:
      models:
        "users/account":
            attributes:
              first_name:
                blank: "You should fill up first name field to complete that"