Before_validation :set_locale vs I18n.t(text: …, l

问题:

What is better to you ?

• precise the locale in all I18n.t(....) messages of the page, or
• set_locale in a before_validation logic ?

I'm concern about DRY but also performance.

回答1:

You should save your locale in your session and set it by default at your application starting.

I recommend you to read this article : best practices

回答2:

You should use both methods to implement i18n in Rails application.

1. Set locale in a before_action of controller.(ref: http://guides.rubyonrails.org/i18n.html)
2. Use I18n.t() to translate text according to the current locale.