fix(rails/locale): add missing one key for user model in ja.yml

[hatajoe]

because of our test is failling with following error:

     I18n::InvalidPluralizationData:
       translation data {:other=>"ユーザー"} can not be used with :count => 1. key 'one' is missing.

[JasonBarnabe]

Per https://www.unicode.org/cldr/charts/47/supplemental/language_plural_rules.html, Japanese does not have a "one" rule. I also see no error in my testing.

> I18n.t('activerecord.models.user', locale: :ja, count: 0)
=> "ユーザー"
> I18n.t('activerecord.models.user', locale: :ja, count: 1)
=> "ユーザー"
> I18n.t('activerecord.models.user', locale: :ja, count: 2)
=> "ユーザー"

[hatajoe]

Thank you for reply. We have no errors in rails console.
We encountered the error in our test since when we upgraded devise-i18n from v1.12.1 to v1.13.0.
So I suspected the change of ja.yml in v1.13.0, but I have no idea now.
I'll check it out when I have time.

[hatajoe]

We have no errors in rails console.

This was my bad.

I'm reproducing the error in my testing for devise-i18n v1.13.0.

****(dev)> I18n.t('activerecord.models.user', locale: :ja, count: 0)
=> "ユーザー"
****(dev)> I18n.t('activerecord.models.user', locale: :ja, count: 1)
(****):2:in `<main>': translation data {:other=>"ユーザー"} can not be used with :count => 1. key 'one' is missing. (I18n::InvalidPluralizationData)

              old_raise.call(*args, **kwargs)
                             ^^^^^^^^^^^^^^^
****(dev)> I18n.t('activerecord.models.user', locale: :ja, count: 2)
=> "ユーザー"

It also has the same error in ko locale which has no :one key in activerecord.models.user.

I had no error for devise-i18n v1.12.1.

****(dev)> I18n.t('activerecord.models.user', locale: :ja, count: 0)
=> "ユーザー"
****(dev)> I18n.t('activerecord.models.user', locale: :ja, count: 1)
=> "ユーザー"
****(dev)> I18n.t('activerecord.models.user', locale: :ja, count: 2)
=> "ユーザー"

Japanese does not have a "one" rule

That's right. I'm not sure but It could be an issue related to Rails I18n..?
I close this until the issue becomes clear. Sorry for taking your time.

[JasonBarnabe]

I have seen a similar issue for locales not defined by https://github.com/svenfuchs/rails-i18n - see ruby-i18n/i18n#706. But as I showed above, that does not include Japanese (or Korean) for me.

[hatajoe]

Sounds great. I pulled ruby-i18n/i18n#707 to my project, then my issue is solved.