CODEWITHSUNDEEP
ruby-on-rails
Petran
Petran

Reputation: 8087

Set html lang attribute on rails

I have a multilingual rails application. On the base.html.erb I am setting the lang attribute like that : 

<html lang="<%= I18n.locale %>" ng-app="myApp">

Is that a good way to do it or there is a better one ?

Upvotes: 9

Views: 2617

Answers (2)

WillHaslett
WillHaslett

Reputation: 738

Using I18n.locale, which gets the locale for the current request is right-on if you want to use its value in a template. If you want to set the locale based on some logic for each request, consider calling a set_locale method in an around_action in ApplicationController. This example looks for a persisted user-selected locale, then looks for a cookie value, then defaults to the app config value. This also allows you to use and set a locale (via the cookie) for public pages in your app.

around_action :set_locale

def set_locale(&action)
  # nil until set either as user attribute or via the signin page
  locale = cookies[:locale]
  if current_user
    # Check a logged-in user's locale attribute. Changing the attribute is
    # done via AJAX then reload, so this works when changing the attribute
    locale = current_user.try(:locale)
    cookies[:locale] = locale
  elsif params[:locale]
    # Set the locale cookie via a public page
    locale = params[:locale].to_sym
    cookies[:locale] = locale
  end
  I18n.with_locale(locale || I18n.default_locale, &action)
end

Then in any controller or view/layout, just as you have it:

<%= I18n.locale %>

Upvotes: 0

Ben
Ben

Reputation: 5192

It might work okay; although you might prefer setting the current locale within your controllers for better flexibility

class ApplicationController < ActionController::Base
  helper_method :current_locale
  ...

  private

  def current_locale
    @current_locale ||= begin
      # complex logic, switching locale based on
      # user defined locale, subdomain, params, etc...
    end
  end
end

Then in your view :

<html lang="<%= current_locale %>" ng-app="myApp">
...

Upvotes: 1

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