Add attribute Account#locale

app/controllers/application_controller.rb

@@ -6,6 +6,7 @@ class ApplicationController < ActionController::Base
   protect_from_forgery with: :exception, prepend: true, unless: :json_request?
 
   before_action :set_raven_context
+  before_action :set_locale
 
   after_action :verify_authorized, except: :index
   after_action :verify_policy_scoped, only: :index
@@ -32,6 +33,10 @@ private
     Raven.extra_context params: params.to_unsafe_h, url: request.url
   end
 
+  def set_locale
+    I18n.locale = current_account&.locale || I18n.default_locale
+  end
+
   def json_request?
     request.format.json?
   end

app/helpers/application_helper.rb

@@ -13,6 +13,15 @@ module ApplicationHelper
     [*negative_timezones_collection, *positive_timezones_collection].freeze
   end
 
+  def locales_collection
+    Account.locales.keys.map(&:to_sym).map do |item|
+      [
+        translate_enum(:locale, item).freeze,
+        item,
+      ].freeze
+    end.freeze
+  end
+
   def positive_timezones_collection
     0.upto(11).flat_map do |n|
       s = n.to_s.rjust(2, '0')

app/models/account.rb

@@ -1,6 +1,8 @@
 # frozen_string_literal: true
 
 class Account < ApplicationRecord
+  pg_enum :locale, %i[en ru]
+
   ################
   # Associations #
   ################
@@ -42,6 +44,8 @@ class Account < ApplicationRecord
 
   validates :timezone, timezone: true
 
+  validates :locale, presence: true
+
   validate :contact_list_corresponds_person
   validate :person_corresponds_contact_list
 

app/policies/settings/appearance_policy.rb

@@ -6,6 +6,6 @@ class Settings::AppearancePolicy < ApplicationPolicy
   end
 
   def permitted_attributes_for_update
-    %i[timezone]
+    %i[timezone locale].freeze
   end
 end

app/views/settings/appearances/_form.html.erb

@@ -1,7 +1,15 @@
 <%= simple_form_for account, url: settings_appearance_path do |f| %>
   <%= f.error_notification %>
 
-  <%= f.input :timezone, as: :select, collection: timezones_collection %>
+  <%= f.input :timezone,
+              as: :select,
+              include_blank: false,
+              collection: timezones_collection %>
+
+  <%= f.input :locale,
+              as: :select,
+              include_blank: false,
+              collection: locales_collection %>
 
   <%= f.button :submit, translate(:save) %>
 <% end %>

config/locales/enums/en.yml

@@ -1,5 +1,8 @@
 en:
   enums:
+    locale:
+      en: English
+      ru: Russian (Русский)
     sex:
       male: Male
       female: Female

config/locales/enums/ru.yml

@@ -1,5 +1,8 @@
 ru:
   enums:
+    locale:
+      en: Английский (English)
+      ru: Русский
     sex:
       male: Мужской
       female: Женский

db/migrate/20200408085219_add_locale_to_accounts.rb

@@ -0,0 +1,11 @@
+# frozen_string_literal: true
+
+class AddLocaleToAccounts < ActiveRecord::Migration[6.0]
+  include Partynest::Migration
+
+  def change
+    add_enum :locale, %i[en ru]
+
+    add_column :accounts, :locale, :locale, null: false, default: 'ru'
+  end
+end

db/structure.sql

@@ -23,6 +23,16 @@ CREATE EXTENSION IF NOT EXISTS plpgsql WITH SCHEMA pg_catalog;
 COMMENT ON EXTENSION plpgsql IS 'PL/pgSQL procedural language';
 
 
+--
+-- Name: locale; Type: TYPE; Schema: public; Owner: -
+--
+
+CREATE TYPE public.locale AS ENUM (
+    'en',
+    'ru'
+);
+
+
 --
 -- Name: person_comment_origin; Type: TYPE; Schema: public; Owner: -
 --
@@ -489,6 +499,7 @@ CREATE TABLE public.accounts (
     timezone interval DEFAULT '03:00:00'::interval NOT NULL,
     person_id bigint,
     contact_list_id bigint NOT NULL,
+    locale public.locale DEFAULT 'ru'::public.locale NOT NULL,
     CONSTRAINT biography CHECK (((biography IS NULL) OR public.is_good_big_text(biography))),
     CONSTRAINT nickname CHECK (public.is_nickname((nickname)::text)),
     CONSTRAINT public_name CHECK (((public_name IS NULL) OR public.is_good_small_text((public_name)::text)))
@@ -1977,6 +1988,7 @@ INSERT INTO "schema_migrations" (version) VALUES
 ('20191002002101'),
 ('20191002170727'),
 ('20191021060000'),
-('20191021061920');
+('20191021061920'),
+('20200408085219');
 
 

factories/accounts.rb

@@ -8,6 +8,7 @@ FactoryBot.define do
     biography { Faker::Lorem.paragraph }
 
     timezone { "#{[nil, :-].sample}#{rand(1..11).to_s.rjust(2, '0')}:00:00" }
+    locale { :ru }
   end
 
   factory :usual_account, parent: :initial_account do

spec/models/account_spec.rb

@@ -97,6 +97,10 @@ RSpec.describe Account do
     it { is_expected.not_to allow_value '+01:00:00' }
   end
 
+  describe '#locale' do
+    it { is_expected.to validate_presence_of :locale }
+  end
+
   describe '#nickname' do
     def allow_value(*)
       super.for :nickname