Set user locale on user registrations #create

This is done so that user.locale is used in the first confirmation email. This also stores user.locale in the DB from registration.

app/controllers/user_registrations_controller.rb

@@ -5,9 +5,13 @@ class UserRegistrationsController < Spree::UserRegistrationsController
 
   before_filter :set_checkout_redirect, only: :create
 
+  include I18nHelper
+  before_filter :set_locale
+
   # POST /resource/sign_up
   def create
     @user = build_resource(params[:spree_user])
+    @user.locale = I18n.locale.to_s
     unless resource.save
       return render_error(@user.errors)
     end

spec/controllers/user_registrations_controller_spec.rb

@@ -48,6 +48,16 @@ describe UserRegistrationsController, type: :controller do
       expect(json).to eq({"email" => "test@test.com"})
       expect(controller.spree_current_user).to be_nil
     end
+
+    it "sets user.locale from cookie on create" do
+      original_locale_cookie = cookies[:locale]
+      cookies[:locale] = "pt"
+
+      xhr :post, :create, spree_user: user_params, use_route: :spree
+
+      expect(assigns[:user].locale).to eq("pt")
+      cookies[:locale] = original_locale_cookie
+    end
   end
 
   context "when registration fails" do