Merge pull request #5243 from consuldemocracy/tenant_locales

Allow different locales per tenant

.rubocop.yml

@@ -574,6 +574,7 @@ RSpec/InstanceVariable:
   Enabled: true
   Exclude:
     - spec/controllers/concerns/has_orders_spec.rb
+    - spec/form_builders/translatable_form_builder_spec.rb
 
 RSpec/LetBeforeExamples:
   Enabled: true

app/assets/stylesheets/admin/locales/form.scss

@@ -0,0 +1,43 @@
+.admin .locales-form {
+  label {
+    display: table;
+  }
+
+  select {
+    width: auto;
+  }
+
+  .help-text {
+    display: block;
+  }
+
+  > select + fieldset,
+  > fieldset + fieldset {
+    margin-top: $line-height / 2;
+  }
+
+  > [type="hidden"] + fieldset,
+  > fieldset + fieldset {
+    @include admin-fieldset-separator;
+    padding-top: calc(#{$line-height} / 4);
+  }
+
+  .collection-radio-buttons,
+  .collection-check-boxes {
+    column-gap: rem-calc(map-get($grid-column-gutter, medium));
+    column-width: 13rem;
+    max-width: max-content;
+
+    @each $elements in 10, 15, 20, 25, 30 {
+      &:has(label:nth-of-type(#{$elements})) {
+        column-count: calc(#{$elements} / 5);
+      }
+    }
+  }
+
+  [type="submit"] {
+    @include regular-button;
+    display: block;
+    margin-top: $line-height;
+  }
+}

app/components/admin/locales/form_component.html.erb

@@ -0,0 +1,39 @@
+<%= form_for locales_settings, url: admin_locales_path, html: { class: "locales-form" } do |f| %>
+  <% if many_available_locales? %>
+    <%= f.select :default, locales_options, hint: sanitize(t("admin.locales.default_help_text")) %>
+  <% else %>
+    <fieldset>
+      <legend><%= attribute_name(:default) %></legend>
+      <p class="help-text"><%= sanitize(t("admin.locales.default_help_text")) %></p>
+
+      <div class="collection-radio-buttons">
+        <%= f.collection_radio_buttons(
+          :default,
+          available_locales,
+          :to_sym,
+          ->(locale) { name_for_locale(locale) }
+        ) do |b| %>
+          <%= b.label { b.radio_button + b.text } %>
+        <% end %>
+      </div>
+    </fieldset>
+  <% end %>
+
+  <fieldset>
+    <legend><%= attribute_name(:enabled) %></legend>
+    <p class="help-text"><%= t("admin.locales.enabled_help_text") %></p>
+
+    <div class="collection-check-boxes">
+      <%= f.collection_check_boxes(
+        :enabled,
+        available_locales,
+        :to_sym,
+        ->(locale) { name_for_locale(locale) }
+      ) do |b| %>
+        <%= b.label { b.check_box + b.text } %>
+      <% end %>
+    </div>
+  </fieldset>
+
+  <%= submit_tag %>
+<% end %>

app/components/admin/locales/form_component.rb

@@ -0,0 +1,30 @@
+class Admin::Locales::FormComponent < ApplicationComponent
+  attr_reader :locales_settings
+  use_helpers :name_for_locale
+
+  def initialize(locales_settings)
+    @locales_settings = locales_settings
+  end
+
+  private
+
+    def available_locales
+      I18n.available_locales
+    end
+
+    def many_available_locales?
+      available_locales.count > select_field_threshold
+    end
+
+    def locales_options
+      available_locales.map { |locale| [name_for_locale(locale), locale] }
+    end
+
+    def select_field_threshold
+      10
+    end
+
+    def attribute_name(...)
+      locales_settings.class.human_attribute_name(...)
+    end
+end

app/components/admin/locales/show_component.html.erb

@@ -0,0 +1,4 @@
+<%= header %>
+<% provide :main_class, "admin-locales-show" %>
+
+<%= render Admin::Locales::FormComponent.new(locales_settings) %>

app/components/admin/locales/show_component.rb

@@ -0,0 +1,12 @@
+class Admin::Locales::ShowComponent < ApplicationComponent
+  include Header
+  attr_reader :locales_settings
+
+  def initialize(locales_settings)
+    @locales_settings = locales_settings
+  end
+
+  def title
+    t("admin.menu.locales")
+  end
+end

app/components/admin/menu_component.rb

@@ -54,7 +54,7 @@ class Admin::MenuComponent < ApplicationComponent
     end
 
     def settings?
-      controllers_names = ["settings", "tenants", "tags", "geozones", "local_census_records", "imports"]
+      controllers_names = %w[settings tenants tags locales geozones local_census_records imports]
       controllers_names.include?(controller_name)
     end
 
@@ -462,6 +462,7 @@ class Admin::MenuComponent < ApplicationComponent
           settings_link,
           tenants_link,
           tags_link,
+          locales_link,
           geozones_link,
           local_census_records_link
         )
@@ -494,6 +495,14 @@ class Admin::MenuComponent < ApplicationComponent
       ]
     end
 
+    def locales_link
+      [
+        t("admin.menu.locales"),
+        admin_locales_path,
+        controller_name == "locales"
+      ]
+    end
+
     def geozones_link
       [
         t("admin.menu.geozones"),

app/components/admin/site_customization/content_blocks/form_content_block_component.html.erb

@@ -1,12 +1,12 @@
-<%= form_for [:admin, @content_block], html: { class: "edit_page" } do |f| %>
+<%= form_for [:admin, content_block], html: { class: "edit_page" } do |f| %>
 
-  <%= render "shared/errors", resource: @content_block %>
+  <%= render "shared/errors", resource: content_block %>
 
   <div class="small-12 medium-6 column">
-    <%= f.select :name, options_for_select(valid_blocks, @selected_content_block) %>
+    <%= f.select :name, options_for_select(valid_blocks, selected_content_block) %>
   </div>
   <div class="small-12 medium-6 column">
-    <%= f.select :locale, I18n.available_locales %>
+    <%= f.select :locale, Setting.enabled_locales %>
   </div>
 
   <div class="small-12 column">

app/components/admin/site_customization/content_blocks/form_content_block_component.rb

@@ -0,0 +1,14 @@
+class Admin::SiteCustomization::ContentBlocks::FormContentBlockComponent < ApplicationComponent
+  attr_reader :content_block
+  use_helpers :valid_blocks
+
+  def initialize(content_block)
+    @content_block = content_block
+  end
+
+  private
+
+    def selected_content_block
+      content_block.name
+    end
+end

app/components/admin/site_customization/content_blocks/form_heading_content_block_component.html.erb

@@ -1,17 +1,17 @@
-<%= form_tag(admin_site_customization_update_heading_content_block_path(@content_block.id), method: "put") do %>
-  <%= render "shared/errors", resource: @content_block %>
+<%= form_tag(admin_site_customization_update_heading_content_block_path(content_block.id), method: "put") do %>
+  <%= render "shared/errors", resource: content_block %>
 
   <div class="small-12 medium-6 column">
     <%= label_tag :name %>
-    <%= select_tag :name, options_for_select(valid_blocks, @selected_content_block) %>
+    <%= select_tag :name, options_for_select(valid_blocks, selected_content_block) %>
   </div>
   <div class="small-12 medium-6 column">
     <%= label_tag :locale %>
-    <%= select_tag :locale, options_for_select(I18n.available_locales, @content_block.locale.to_sym) %>
+    <%= select_tag :locale, options_for_select(Setting.enabled_locales, content_block.locale.to_sym) %>
   </div>
   <div class="small-12 column">
     <%= label_tag :body %>
-    <%= text_area_tag :body, @content_block.body, rows: 10 %>
+    <%= text_area_tag :body, content_block.body, rows: 10 %>
     <div class="small-12 medium-6 large-3">
       <%= button_tag t("admin.menu.site_customization.buttons.content_block.update"), class: "button success expanded" %>
     </div>

app/components/admin/site_customization/content_blocks/form_heading_content_block_component.rb

@@ -0,0 +1,14 @@
+class Admin::SiteCustomization::ContentBlocks::FormHeadingContentBlockComponent < ApplicationComponent
+  attr_reader :content_block
+  use_helpers :valid_blocks
+
+  def initialize(content_block)
+    @content_block = content_block
+  end
+
+  private
+
+    def selected_content_block
+      "hcb_#{content_block.heading_id}"
+    end
+end

app/components/admin/site_customization/information_texts/form_component.html.erb

@@ -1,13 +1,13 @@
-<%= render "globalize_locales" %>
+<%= render Shared::GlobalizeLocalesComponent.new %>
 
 <%= form_tag admin_site_customization_information_texts_path do %>
-  <% I18n.available_locales.each do |l| %>
+  <% enabled_locales.each do |l| %>
     <%= translation_enabled_tag l, site_customization_enable_translation?(l) %>
   <% end %>
   <% contents.each do |group| %>
     <% group.each do |content| %>
       <b><%= content.key %></b>
-      <% content.globalize_locales.each do |locale| %>
+      <% (content.globalize_locales & enabled_locales.map(&:to_sym)).each do |locale| %>
         <%= render Admin::SiteCustomization::InformationTexts::FormFieldComponent.new(content, locale: locale) %>
       <% end %>
     <% end %>

app/components/admin/site_customization/information_texts/form_component.rb

@@ -0,0 +1,18 @@
+class Admin::SiteCustomization::InformationTexts::FormComponent < ApplicationComponent
+  attr_reader :contents
+  use_helpers :site_customization_enable_translation?
+
+  def initialize(contents)
+    @contents = contents
+  end
+
+  private
+
+    def translation_enabled_tag(locale, enabled)
+      hidden_field_tag("enabled_translations[#{locale}]", (enabled ? 1 : 0))
+    end
+
+    def enabled_locales
+      Setting.enabled_locales
+    end
+end

app/components/admin/site_customization/information_texts/form_field_component.html.erb

@@ -4,6 +4,6 @@
                     text,
                     rows: 5,
                     class: "js-globalize-attribute",
-                    style: site_customization_display_translation_style(locale),
+                    style: site_customization_display_translation_style,
                     data: { locale: locale } %>
 <% end %>

app/components/admin/site_customization/information_texts/form_field_component.rb

@@ -1,6 +1,6 @@
 class Admin::SiteCustomization::InformationTexts::FormFieldComponent < ApplicationComponent
   attr_reader :i18n_content, :locale
-  use_helpers :globalize, :site_customization_display_translation_style
+  use_helpers :globalize, :site_customization_enable_translation?
 
   def initialize(i18n_content, locale:)
     @i18n_content = i18n_content
@@ -22,4 +22,8 @@ class Admin::SiteCustomization::InformationTexts::FormFieldComponent < Applicati
     def i18n_text
       I18n.translate(i18n_content.key, locale: locale)
     end
+
+    def site_customization_display_translation_style
+      site_customization_enable_translation?(locale) ? "" : "display: none;"
+    end
 end

app/components/layout/locale_switcher_component.rb

@@ -12,7 +12,7 @@ class Layout::LocaleSwitcherComponent < ApplicationComponent
     end
 
     def locales
-      I18n.available_locales
+      Setting.enabled_locales
     end
 
     def label

app/components/shared/globalize_locales_component.html.erb

@@ -3,19 +3,19 @@
     <span class="small">
       <strong class="js-languages-description"
         data-texts="<%= t("shared.translations.languages_in_use").to_json %>">
-        <%= selected_languages_description(resource) %>
+        <%= selected_languages_description %>
       </strong>
     </span>
     <%= select_tag :select_language,
-                   options_for_select_language(resource),
+                   options_for_select_language,
                    prompt: t("shared.translations.select_language_prompt"),
                    class: "js-select-language" %>
-    <%= select_language_error(resource) %>
+    <%= select_language_error %>
     <div class="margin-bottom">
       <% if manage_languages %>
-        <% I18n.available_locales.each do |locale| %>
+        <% Setting.enabled_locales.each do |locale| %>
           <%= link_to t("shared.translations.remove_language"), "#",
-                      style: display_destroy_locale_style(resource, locale),
+                      style: display_destroy_locale_style(locale),
                       class: "delete js-delete-language js-delete-#{locale}",
                       data: { locale: locale } %>
         <% end %>

app/components/shared/globalize_locales_component.rb

@@ -0,0 +1,95 @@
+class Shared::GlobalizeLocalesComponent < ApplicationComponent
+  attr_reader :resource, :manage_languages
+  use_helpers :first_translation, :first_marked_for_destruction_translation,
+              :enabled_locale?, :name_for_locale, :highlight_translation_html_class
+
+  def initialize(resource = nil, manage_languages: true)
+    @resource = resource
+    @manage_languages = manage_languages
+  end
+
+  private
+
+    def options_for_select_language
+      options_for_select(available_locales, selected_locale)
+    end
+
+    def available_locales
+      Setting.enabled_locales.select { |locale| enabled_locale?(resource, locale) }.map do |locale|
+        [name_for_locale(locale), locale, { data: { locale: locale }}]
+      end
+    end
+
+    def selected_locale
+      return first_i18n_content_locale if resource.blank?
+
+      if resource.locales_not_marked_for_destruction.any?
+        first_translation(resource)
+      elsif resource.locales_persisted_and_marked_for_destruction.any?
+        first_marked_for_destruction_translation(resource)
+      else
+        I18n.locale
+      end
+    end
+
+    def first_i18n_content_locale
+      if i18n_content_locales.empty? || i18n_content_locales.include?(I18n.locale)
+        I18n.locale
+      else
+        i18n_content_locales.first
+      end
+    end
+
+    def selected_languages_description
+      sanitize(t("shared.translations.languages_in_use", count: active_locales_count))
+    end
+
+    def select_language_error
+      return if resource.blank?
+
+      current_translation = resource.translation_for(selected_locale)
+      if current_translation.errors.added? :base, :translations_too_short
+        tag.div class: "small error" do
+          current_translation.errors[:base].join(", ")
+        end
+      end
+    end
+
+    def active_locales_count
+      if active_locales.size > 0
+        active_locales.size
+      else
+        1
+      end
+    end
+
+    def active_locales
+      if resource.present?
+        resource.locales_not_marked_for_destruction
+      else
+        i18n_content_locales
+      end
+    end
+
+    def display_destroy_locale_style(locale)
+      "display: none;" unless display_destroy_locale_link?(locale)
+    end
+
+    def display_destroy_locale_link?(locale)
+      selected_locale == locale
+    end
+
+    def options_for_add_language
+      options_for_select(all_language_options, nil)
+    end
+
+    def all_language_options
+      Setting.enabled_locales.map do |locale|
+        [name_for_locale(locale), locale]
+      end
+    end
+
+    def i18n_content_locales
+      I18nContentTranslation.existing_locales
+    end
+end

app/controllers/admin/locales_controller.rb

@@ -0,0 +1,27 @@
+class Admin::LocalesController < Admin::BaseController
+  before_action :set_locales_settings
+  authorize_resource :locales_settings
+
+  def show
+  end
+
+  def update
+    @locales_settings.update!(locales_settings_params)
+
+    redirect_to admin_locales_path, notice: t("admin.locales.update.notice")
+  end
+
+  private
+
+    def locales_settings_params
+      params.require(:setting_locales_settings).permit(allowed_params)
+    end
+
+    def allowed_params
+      [:default, enabled: []]
+    end
+
+    def set_locales_settings
+      @locales_settings = Setting::LocalesSettings.new
+    end
+end

app/controllers/admin/site_customization/content_blocks_controller.rb

@@ -11,6 +11,9 @@ class Admin::SiteCustomization::ContentBlocksController < Admin::SiteCustomizati
     @headings_content_blocks = Budget::ContentBlock.all
   end
 
+  def new
+  end
+
   def create
     if is_heading_content_block?(@content_block.name)
       heading_content_block = new_heading_content_block
@@ -31,11 +34,6 @@ class Admin::SiteCustomization::ContentBlocksController < Admin::SiteCustomizati
   end
 
   def edit
-    if @content_block.is_a? SiteCustomization::ContentBlock
-      @selected_content_block = @content_block.name
-    else
-      @selected_content_block = "hcb_#{@content_block.heading_id}"
-    end
   end
 
   def update
@@ -72,11 +70,6 @@ class Admin::SiteCustomization::ContentBlocksController < Admin::SiteCustomizati
 
   def edit_heading_content_block
     @content_block = Budget::ContentBlock.find(params[:id])
-    if @content_block.is_a? Budget::ContentBlock
-      @selected_content_block = "hcb_#{@content_block.heading_id}"
-    else
-      @selected_content_block = @content_block.name
-    end
     @is_heading_content_block = true
     render :edit
   end

app/controllers/application_controller.rb

@@ -46,17 +46,17 @@ class ApplicationController < ActionController::Base
         current_user.update(locale: locale)
       end
 
-      session[:locale] = locale
+      session[:locale] = locale.to_s
       I18n.with_locale(locale, &action)
     end
 
     def current_locale
-      if I18n.available_locales.include?(params[:locale]&.to_sym)
+      if Setting.enabled_locales.include?(params[:locale]&.to_sym)
         params[:locale]
-      elsif I18n.available_locales.include?(session[:locale]&.to_sym)
+      elsif Setting.enabled_locales.include?(session[:locale]&.to_sym)
         session[:locale]
       else
-        I18n.default_locale
+        Setting.default_locale
       end
     end
 

app/controllers/management/base_controller.rb

@@ -40,11 +40,11 @@ class Management::BaseController < ActionController::Base
     end
 
     def switch_locale(&action)
-      if params[:locale] && I18n.available_locales.include?(params[:locale].to_sym)
-        session[:locale] = params[:locale]
+      if params[:locale] && Setting.enabled_locales.include?(params[:locale].to_sym)
+        session[:locale] = params[:locale].to_s
       end
 
-      session[:locale] ||= I18n.default_locale
+      session[:locale] ||= Setting.default_locale.to_s
 
       I18n.with_locale(session[:locale], &action)
     end

app/controllers/subscriptions_controller.rb

@@ -32,8 +32,12 @@ class SubscriptionsController < ApplicationController
 
     def set_user_locale(&action)
       if params[:locale].blank?
-        session[:locale] = I18n.available_locales.find { |locale| locale == @user.locale&.to_sym }
+        session[:locale] = find_locale.to_s
       end
       I18n.with_locale(session[:locale], &action)
     end
+
+    def find_locale
+      Setting.enabled_locales.find { |locale| locale == @user.locale&.to_sym } || I18n.locale
+    end
 end

app/form_builders/translatable_form_builder.rb

@@ -0,0 +1,71 @@
+class TranslatableFormBuilder < ConsulFormBuilder
+  attr_accessor :translations
+
+  def translatable_fields(&)
+    @translations = {}
+    visible_locales.map do |locale|
+      @translations[locale] = translation_for(locale)
+    end
+    safe_join(visible_locales.map do |locale|
+      Globalize.with_locale(locale) { fields_for_locale(locale, &) }
+    end)
+  end
+
+  private
+
+    def fields_for_locale(locale)
+      fields_for_translation(@translations[locale]) do |translations_form|
+        @template.tag.div(**translations_options(translations_form.object, locale)) do
+          @template.concat translations_form.hidden_field(
+            :_destroy,
+            value: !@template.enabled_locale?(translations_form.object.globalized_model, locale),
+            data: { locale: locale }
+          )
+
+          @template.concat translations_form.hidden_field(:locale, value: locale)
+
+          yield translations_form
+        end
+      end
+    end
+
+    def fields_for_translation(translation, &)
+      fields_for(:translations, translation, builder: TranslationsFieldsFormBuilder, &)
+    end
+
+    def translation_for(locale)
+      existing_translation_for(locale) || new_translation_for(locale)
+    end
+
+    def existing_translation_for(locale)
+      @object.translations.find { |translation| translation.locale == locale }
+    end
+
+    def new_translation_for(locale)
+      @object.translations.new(locale: locale).tap(&:mark_for_destruction)
+    end
+
+    def highlight_translation_html_class
+      @template.highlight_translation_html_class
+    end
+
+    def translations_options(resource, locale)
+      {
+        class: "translatable-fields js-globalize-attribute #{highlight_translation_html_class}",
+        style: @template.display_translation_style(resource.globalized_model, locale),
+        data: { locale: locale }
+      }
+    end
+
+    def no_other_translations?(translation)
+      (@object.translations - [translation]).reject(&:_destroy).empty?
+    end
+
+    def visible_locales
+      if @template.translations_interface_enabled?
+        Setting.enabled_locales & @object.globalize_locales
+      else
+        [I18n.locale]
+      end
+    end
+end

app/form_builders/translations_fields_form_builder.rb

@@ -0,0 +1,5 @@
+class TranslationsFieldsFormBuilder < ConsulFormBuilder
+  def locale
+    @object.locale
+  end
+end

app/helpers/application_helper.rb

@@ -46,8 +46,8 @@ module ApplicationHelper
     end
   end
 
-  def content_block(name, locale = I18n.locale)
-    SiteCustomization::ContentBlock.block_for(name, locale)
+  def content_block(...)
+    SiteCustomization::ContentBlock.block_for(...)
   end
 
   def self.asset_data_base64(path)

app/helpers/globalize_helper.rb

@@ -1,14 +1,4 @@
 module GlobalizeHelper
-  def options_for_select_language(resource)
-    options_for_select(available_locales(resource), selected_locale(resource))
-  end
-
-  def available_locales(resource)
-    I18n.available_locales.select { |locale| enabled_locale?(resource, locale) }.map do |locale|
-      [name_for_locale(locale), locale, { data: { locale: locale }}]
-    end
-  end
-
   def enabled_locale?(resource, locale)
     return site_customization_enable_translation?(locale) if resource.blank?
 
@@ -21,27 +11,6 @@ module GlobalizeHelper
     end
   end
 
-  def selected_locale(resource)
-    return first_i18n_content_translation_locale if resource.blank?
-
-    if resource.locales_not_marked_for_destruction.any?
-      first_translation(resource)
-    elsif resource.locales_persisted_and_marked_for_destruction.any?
-      first_marked_for_destruction_translation(resource)
-    else
-      I18n.locale
-    end
-  end
-
-  def first_i18n_content_translation_locale
-    if I18nContentTranslation.existing_languages.count == 0 ||
-       I18nContentTranslation.existing_languages.include?(I18n.locale)
-      I18n.locale
-    else
-      I18nContentTranslation.existing_languages.first
-    end
-  end
-
   def first_translation(resource)
     if resource.locales_not_marked_for_destruction.include? I18n.locale
       I18n.locale
@@ -58,40 +27,6 @@ module GlobalizeHelper
     end
   end
 
-  def translations_for_locale?(resource)
-    resource.locales_not_marked_for_destruction.any?
-  end
-
-  def selected_languages_description(resource)
-    sanitize(t("shared.translations.languages_in_use", count: active_languages_count(resource)))
-  end
-
-  def select_language_error(resource)
-    return if resource.blank?
-
-    current_translation = resource.translation_for(selected_locale(resource))
-    if current_translation.errors.added? :base, :translations_too_short
-      tag.div class: "small error" do
-        current_translation.errors[:base].join(", ")
-      end
-    end
-  end
-
-  def active_languages_count(resource)
-    if resource.blank?
-      no_resource_languages_count
-    elsif resource.locales_not_marked_for_destruction.size > 0
-      resource.locales_not_marked_for_destruction.size
-    else
-      1
-    end
-  end
-
-  def no_resource_languages_count
-    count = I18nContentTranslation.existing_languages.count
-    count > 0 ? count : 1
-  end
-
   def display_translation_style(resource, locale)
     "display: none;" unless display_translation?(resource, locale)
   end
@@ -108,28 +43,6 @@ module GlobalizeHelper
     end
   end
 
-  def display_destroy_locale_style(resource, locale)
-    "display: none;" unless display_destroy_locale_link?(resource, locale)
-  end
-
-  def display_destroy_locale_link?(resource, locale)
-    selected_locale(resource) == locale
-  end
-
-  def options_for_add_language
-    options_for_select(all_language_options, nil)
-  end
-
-  def all_language_options
-    I18n.available_locales.map do |locale|
-      [name_for_locale(locale), locale]
-    end
-  end
-
-  def translation_enabled_tag(locale, enabled)
-    hidden_field_tag("enabled_translations[#{locale}]", (enabled ? 1 : 0))
-  end
-
   def globalize(locale, &)
     Globalize.with_locale(locale, &)
   end

app/helpers/site_customization_helper.rb

@@ -1,10 +1,6 @@
 module SiteCustomizationHelper
   def site_customization_enable_translation?(locale)
-    I18nContentTranslation.existing_languages.include?(locale) || locale == I18n.locale
-  end
-
-  def site_customization_display_translation_style(locale)
-    site_customization_enable_translation?(locale) ? "" : "display: none;"
+    I18nContentTranslation.existing_locales.include?(locale) || locale == I18n.locale
   end
 
   def information_texts_tabs

app/helpers/translatable_form_helper.rb

@@ -14,82 +14,4 @@ module TranslatableFormHelper
   def highlight_translation_html_class
     "highlight" if translations_interface_enabled?
   end
-
-  class TranslatableFormBuilder < ConsulFormBuilder
-    attr_accessor :translations
-
-    def translatable_fields(&)
-      @translations = {}
-      visible_locales.map do |locale|
-        @translations[locale] = translation_for(locale)
-      end
-      safe_join(visible_locales.map do |locale|
-        Globalize.with_locale(locale) { fields_for_locale(locale, &) }
-      end)
-    end
-
-    private
-
-      def fields_for_locale(locale)
-        fields_for_translation(@translations[locale]) do |translations_form|
-          @template.tag.div **translations_options(translations_form.object, locale) do
-            @template.concat translations_form.hidden_field(
-              :_destroy,
-              value: !@template.enabled_locale?(translations_form.object.globalized_model, locale),
-              data: { locale: locale }
-            )
-
-            @template.concat translations_form.hidden_field(:locale, value: locale)
-
-            yield translations_form
-          end
-        end
-      end
-
-      def fields_for_translation(translation, &)
-        fields_for(:translations, translation, builder: TranslationsFieldsBuilder, &)
-      end
-
-      def translation_for(locale)
-        existing_translation_for(locale) || new_translation_for(locale)
-      end
-
-      def existing_translation_for(locale)
-        @object.translations.find { |translation| translation.locale == locale }
-      end
-
-      def new_translation_for(locale)
-        @object.translations.new(locale: locale).tap(&:mark_for_destruction)
-      end
-
-      def highlight_translation_html_class
-        @template.highlight_translation_html_class
-      end
-
-      def translations_options(resource, locale)
-        {
-          class: "translatable-fields js-globalize-attribute #{highlight_translation_html_class}",
-          style: @template.display_translation_style(resource.globalized_model, locale),
-          data: { locale: locale }
-        }
-      end
-
-      def no_other_translations?(translation)
-        (@object.translations - [translation]).reject(&:_destroy).empty?
-      end
-
-      def visible_locales
-        if @template.translations_interface_enabled?
-          @object.globalize_locales
-        else
-          [I18n.locale]
-        end
-      end
-  end
-
-  class TranslationsFieldsBuilder < ConsulFormBuilder
-    def locale
-      @object.locale
-    end
-  end
 end

app/lib/search_dictionary_selector.rb

@@ -37,7 +37,7 @@ module SearchDictionarySelector
     private
 
       def find_from_i18n_default
-        key_to_lookup = I18n.default_locale.to_s.split("-").first.to_sym
+        key_to_lookup = Setting.default_locale.to_s.split("-").first.to_sym
 
         dictionary = I18N_TO_DICTIONARY[key_to_lookup]
         dictionary ||= "simple"

app/mailers/mailer.rb

@@ -76,7 +76,7 @@ class Mailer < ApplicationMailer
   def user_invite(email)
     @email_to = email
 
-    I18n.with_locale(I18n.default_locale) do
+    I18n.with_locale(Setting.default_locale) do
       mail(to: @email_to, subject: t("mailers.user_invite.subject", org_name: Setting["org_name"]))
     end
   end

app/models/abilities/administrator.rb

@@ -134,6 +134,8 @@ module Abilities
       can [:deliver], Newsletter, hidden_at: nil
       can [:manage], Dashboard::AdministratorTask
 
+      can :manage, Setting::LocalesSettings
+
       can :manage, LocalCensusRecord
       can [:create, :read], LocalCensusRecords::Import
 

app/models/budget/content_block.rb

@@ -1,6 +1,6 @@
 class Budget
   class ContentBlock < ApplicationRecord
-    validates :locale, presence: true, inclusion: { in: I18n.available_locales.map(&:to_s) }
+    validates :locale, presence: true, inclusion: { in: ->(*) { Setting.enabled_locales.map(&:to_s) }}
     validates :heading, presence: true, uniqueness: { scope: :locale }
 
     belongs_to :heading

app/models/concerns/globalizable.rb

@@ -13,10 +13,6 @@ module Globalizable
       translations.reject(&:marked_for_destruction?).map(&:locale)
     end
 
-    def locales_marked_for_destruction
-      I18n.available_locales - locales_not_marked_for_destruction
-    end
-
     def locales_persisted_and_marked_for_destruction
       translations.select { |t| t.persisted? && t.marked_for_destruction? }.map(&:locale)
     end
@@ -86,7 +82,7 @@ module Globalizable
         translation_class.instance_eval do
           validates method,
                     length: options[:length],
-                    if: lambda { |translation| translation.locale == I18n.default_locale }
+                    if: lambda { |translation| translation.locale == Setting.default_locale }
         end
         if options.count > 1
           translation_class.instance_eval do

app/models/i18n_content.rb

@@ -119,7 +119,7 @@ class I18nContent < ApplicationRecord
     end
   end
 
-  def self.update(contents, enabled_translations = I18n.available_locales)
+  def self.update(contents, enabled_translations = Setting.enabled_locales)
     contents.each do |content|
       values = content[:values].slice(*translation_params(enabled_translations))
 

app/models/i18n_content_translation.rb

@@ -1,5 +1,5 @@
 class I18nContentTranslation < ApplicationRecord
-  def self.existing_languages
-    self.select(:locale).distinct.map { |l| l.locale.to_sym }.to_a
+  def self.existing_locales
+    distinct.pluck(:locale).map(&:to_sym)
   end
 end

app/models/setting.rb

@@ -95,6 +95,8 @@ class Setting < ApplicationRecord
         "html.per_page_code_body": "",
         # Code to be included at the top (inside <head>) of every page (useful for tracking)
         "html.per_page_code_head": "",
+        "locales.enabled": nil,
+        "locales.default": nil,
         "map.latitude": 51.48,
         "map.longitude": 0.0,
         "map.zoom": 10,
@@ -219,5 +221,20 @@ class Setting < ApplicationRecord
     def archived_proposals_date_limit
       Setting["months_to_archive_proposals"].to_i.months.ago
     end
+
+    def enabled_locales
+      locales = Setting["locales.enabled"].to_s.split.map(&:to_sym)
+
+      [
+        default_locale,
+        *((locales & I18n.available_locales).presence || I18n.available_locales)
+      ].uniq
+    end
+
+    def default_locale
+      locale = Setting["locales.default"].to_s.strip.to_sym
+
+      ([locale] & I18n.available_locales).first || I18n.default_locale
+    end
   end
 end

app/models/setting/locales_settings.rb

@@ -0,0 +1,23 @@
+class Setting
+  class LocalesSettings
+    include ActiveModel::Model
+    include ActiveModel::Attributes
+
+    attribute :enabled, array: true, default: -> { Setting.enabled_locales }
+    attribute :default, default: -> { Setting.default_locale }
+
+    def persisted?
+      true
+    end
+
+    def update(attributes)
+      assign_attributes(attributes)
+
+      Setting.transaction do
+        Setting["locales.default"] = default
+        Setting["locales.enabled"] = [default, *enabled].join(" ")
+      end
+    end
+    alias_method :update!, :update
+  end
+end

app/models/site_customization/content_block.rb

@@ -1,11 +1,10 @@
 class SiteCustomization::ContentBlock < ApplicationRecord
   VALID_BLOCKS = %w[top_links footer footer_legal subnavigation_left subnavigation_right].freeze
 
-  validates :locale, presence: true, inclusion: { in: I18n.available_locales.map(&:to_s) }
+  validates :locale, presence: true, inclusion: { in: ->(*) { Setting.enabled_locales.map(&:to_s) }}
   validates :name, presence: true, uniqueness: { scope: :locale }, inclusion: { in: ->(*) { VALID_BLOCKS }}
 
-  def self.block_for(name, locale)
-    locale ||= I18n.default_locale
+  def self.block_for(name, locale = I18n.locale)
     find_by(name: name, locale: locale)&.body
   end
 end

app/models/user.rb

@@ -339,7 +339,7 @@ class User < ApplicationRecord
   end
 
   def locale
-    self[:locale] || I18n.default_locale.to_s
+    self[:locale] || Setting.default_locale.to_s
   end
 
   def confirmation_required?

app/views/admin/legislation/homepages/_form.html.erb

@@ -1,7 +1,4 @@
-<%= render "shared/globalize_locales",
-           resource: @process,
-           display_style: lambda { |locale| enable_translation_style(@process, locale) },
-           manage_languages: false %>
+<%= render "shared/globalize_locales", resource: @process, manage_languages: false %>
 
 <%= translatable_form_for [:admin, @process], url: url do |f| %>
 

app/views/admin/legislation/milestones/_summary_form.html.erb

@@ -1,7 +1,4 @@
-<%= render "shared/globalize_locales",
-           resource: @process,
-           display_style: lambda { |locale| enable_translation_style(@process, locale) },
-           manage_languages: false %>
+<%= render "shared/globalize_locales", resource: @process, manage_languages: false %>
 
 <%= translatable_form_for [:admin, @process] do |f| %>
   <div class="row">

app/views/admin/locales/show.html.erb

@@ -0,0 +1 @@
+<%= render Admin::Locales::ShowComponent.new(@locales_settings) %>

app/views/admin/site_customization/content_blocks/_form.html.erb

@@ -1,5 +1,5 @@
 <% if @is_heading_content_block %>
-  <%= render "form_heading_content_block" %>
+  <%= render Admin::SiteCustomization::ContentBlocks::FormHeadingContentBlockComponent.new(@content_block) %>
 <% else %>
-  <%= render "form_content_block" %>
+  <%= render Admin::SiteCustomization::ContentBlocks::FormContentBlockComponent.new(@content_block) %>
 <% end %>

app/views/admin/site_customization/information_texts/_globalize_locales.html.erb

@@ -1,4 +0,0 @@
-<%= render "shared/common_globalize_locales",
-           resource: nil,
-           display_style: lambda { |locale| site_customization_display_translation_style(locale) },
-           manage_languages: defined?(manage_languages) ? manage_languages : true %>

app/views/admin/site_customization/information_texts/index.html.erb

@@ -4,7 +4,6 @@
   <%= render "tabs" %>
 
   <div class="tabs-panel is-active" role="tab">
-    <%= render "form", contents: [@content] %>
+    <%= render Admin::SiteCustomization::InformationTexts::FormComponent.new([@content]) %>
   </div>
-
 </div>

app/views/shared/_globalize_locales.html.erb

@@ -1,6 +1,6 @@
 <% if translations_interface_enabled? %>
-  <%= render "shared/common_globalize_locales",
-             resource: resource,
-             display_style: lambda { |locale| enable_translation_style(resource, locale) },
-             manage_languages: defined?(manage_languages) ? manage_languages : true %>
+  <%= render Shared::GlobalizeLocalesComponent.new(
+    resource,
+    manage_languages: defined?(manage_languages) ? manage_languages : true
+  ) %>
 <% end %>

config/application.rb

@@ -136,6 +136,7 @@ module Consul
     [
       "app/components/custom",
       "app/controllers/custom",
+      "app/form_builders/custom",
       "app/graphql/custom",
       "app/lib/custom",
       "app/mailers/custom",

config/locales/en/activemodel.yml

@@ -38,6 +38,9 @@ en:
         year_of_birth: "Year born"
       local_census_records/import:
         file: File
+      setting/locales_settings:
+        default: Default language
+        enabled: Enabled languages
     errors:
       models:
         local_census_records/import:

config/locales/en/admin.yml

@@ -710,6 +710,11 @@ en:
       milestones:
         index:
           title: Following
+    locales:
+      default_help_text: "This is the default language of the application, and changing it will <strong>affect every user</strong> visiting the website for the first time."
+      enabled_help_text: The default language, selected above, will be included automatically.
+      update:
+        notice: Languages updated successfully
     managers:
       index:
         title: Managers
@@ -727,11 +732,12 @@ en:
     menu:
       activity: Moderator activity
       admin: Admin menu
-      banner: Manage banners
+      banner: Banners
       proposals: Proposals
       proposals_topics: Proposals topics
       budgets: Participatory budgets
-      geozones: Manage geozones
+      geozones: Geozones
+      locales: Languages
       hidden_comments: Hidden comments
       hidden_debates: Hidden debates
       hidden_proposals: Hidden proposals
@@ -752,7 +758,7 @@ en:
       polls: Polls
       poll_booths: Booths location
       poll_booth_assignments: Booths Assignments
-      poll_shifts: Manage shifts
+      poll_shifts: Shifts Assignments
       officials: Officials
       organizations: Organisations
       settings: Global settings
@@ -794,7 +800,7 @@ en:
       dashboard_actions: Resources and actions
       debates: "Debates"
       comments: "Comments"
-      local_census_records: Manage local census
+      local_census_records: Local census
       machine_learning: "AI / Machine learning"
       multitenancy: Multitenancy
     administrators:
@@ -1232,7 +1238,7 @@ en:
       show:
         location: "Location"
       booth:
-        shifts: "Manage shifts"
+        shifts: "Shifts Assignments"
     officials:
       edit:
         destroy: Remove "Official" status
@@ -1713,7 +1719,7 @@ en:
       empty: "There are no changes logged"
     local_census_records:
       index:
-        title: Manage local census
+        title: Local census
         create: Create new local census record
         no_local_census_records: There are no local census records.
         document_type: Document type
@@ -1738,7 +1744,7 @@ en:
         create:
           notice: Local census records import process executed successfully!
         show:
-          title: Manage local census
+          title: Local census
           subtitle: Import process results
           import: Import again
           errored: Errored rows

config/locales/es/activemodel.yml

@@ -38,6 +38,9 @@ es:
         year_of_birth: "Año de nacimiento"
       local_census_records/import:
         file: Archivo
+      setting/locales_settings:
+        default: Idioma por defecto
+        enabled: Idiomas habilitados
     errors:
       models:
         local_census_records/import:

config/locales/es/admin.yml

@@ -710,6 +710,11 @@ es:
       milestones:
         index:
           title: Seguimiento
+    locales:
+      default_help_text: "Cambiar el idioma por defecto <strong>afectará a todos los usuarios</strong> que visiten la página por primera vez."
+      enabled_help_text: El idioma por defecto, seleccionado con anterioridad, se habilitará automáticamente.
+      update:
+        notice: Idiomas actualizados con éxito
     managers:
       index:
         title: Gestores
@@ -727,11 +732,12 @@ es:
     menu:
       activity: Actividad de moderadores
       admin: Menú de administración
-      banner: Gestionar banners
+      banner: Banners
       proposals: Propuestas
       proposals_topics: Temas de propuestas
       budgets: Presupuestos participativos
-      geozones: Gestionar zonas
+      geozones: Zonas
+      locales: Idiomas
       hidden_comments: Comentarios ocultos
       hidden_debates: Debates ocultos
       hidden_proposals: Propuestas ocultas
@@ -794,7 +800,7 @@ es:
       dashboard_actions: Recursos y acciones
       debates: "Debates"
       comments: "Comentarios"
-      local_census_records: Gestionar censo local
+      local_census_records: Censo local
       machine_learning: "IA / Machine learning"
       multitenancy: Multientidad
     administrators:
@@ -1713,7 +1719,7 @@ es:
       empty: "No hay cambios registrados"
     local_census_records:
       index:
-        title: Gestionar censo local
+        title: Censo local
         create: Crear nuevo registro en el censo local
         no_local_census_records: No hay registros de censo local
         document_type: Tipo de documento
@@ -1738,7 +1744,7 @@ es:
         create:
           notice: ¡Proceso de import de registros del censo local ejecutado correctamente!
         show:
-          title: Gestionar censo local
+          title: Censo local
           subtitle: Resultados del proceso de importación
           import: Importar otro fichero
           errored: Filas erróneas

config/routes/admin.rb

@@ -242,6 +242,7 @@ namespace :admin do
   end
 
   resources :geozones, only: [:index, :new, :create, :edit, :update, :destroy]
+  resource :locales, only: [:show, :update]
 
   namespace :site_customization do
     resources :pages, except: [:show] do

db/dev_seeds.rb

@@ -23,7 +23,11 @@ def log(msg)
 end
 
 def random_locales
-  [I18n.default_locale, *(I18n.available_locales & %i[en es]), *I18n.available_locales.sample(4)].uniq.take(5)
+  [
+    Setting.default_locale,
+    *(Setting.enabled_locales & %i[en es]),
+    *Setting.enabled_locales.sample(4)
+  ].uniq.take(5)
 end
 
 def random_locales_attributes(**attribute_names_with_values)

db/dev_seeds/banners.rb

@@ -9,7 +9,7 @@ section "Creating banners" do
                         post_started_at: rand((1.week.ago)..(1.day.ago)),
                         post_ended_at: rand((1.day.ago)..(1.week.from_now)),
                         created_at: rand((1.week.ago)..Time.current))
-    I18n.available_locales.map do |locale|
+    Setting.enabled_locales.map do |locale|
       Globalize.with_locale(locale) do
         banner.description = "Description for locale #{locale}"
         banner.title = "Title for locale #{locale}"

db/dev_seeds/polls.rb

@@ -41,7 +41,7 @@ section "Creating polls" do
 
   Poll.find_each do |poll|
     name = poll.name
-    I18n.available_locales.map do |locale|
+    Setting.enabled_locales.map do |locale|
       Globalize.with_locale(locale) do
         poll.name = "#{name} (#{locale})"
         poll.summary = "Summary for locale #{locale}"
@@ -59,7 +59,7 @@ section "Creating Poll Questions & Answers" do
       question = Poll::Question.new(author: User.sample,
                                     title: question_title,
                                     poll: poll)
-      I18n.available_locales.map do |locale|
+      Setting.enabled_locales.map do |locale|
         Globalize.with_locale(locale) do
           question.title = "#{question_title} (#{locale})"
         end
@@ -71,7 +71,7 @@ section "Creating Poll Questions & Answers" do
                                             title: title.capitalize,
                                             description: description,
                                             given_order: index + 1)
-        I18n.available_locales.map do |locale|
+        Setting.enabled_locales.map do |locale|
           Globalize.with_locale(locale) do
             answer.title = "#{title} (#{locale})"
             answer.description = "#{description} (#{locale})"
@@ -235,7 +235,7 @@ section "Creating Poll Questions from Proposals" do
     question = Poll::Question.new(poll: poll)
     question.copy_attributes_from_proposal(proposal)
     question_title = question.title
-    I18n.available_locales.map do |locale|
+    Setting.enabled_locales.map do |locale|
       Globalize.with_locale(locale) do
         question.title = "#{question_title} (#{locale})"
       end
@@ -247,7 +247,7 @@ section "Creating Poll Questions from Proposals" do
                                           title: title.capitalize,
                                           description: description,
                                           given_order: index + 1)
-      I18n.available_locales.map do |locale|
+      Setting.enabled_locales.map do |locale|
         Globalize.with_locale(locale) do
           answer.title = "#{title} (#{locale})"
           answer.description = "#{description} (#{locale})"
@@ -265,7 +265,7 @@ section "Creating Successful Proposals" do
     question = Poll::Question.new(poll: poll)
     question.copy_attributes_from_proposal(proposal)
     question_title = question.title
-    I18n.available_locales.map do |locale|
+    Setting.enabled_locales.map do |locale|
       Globalize.with_locale(locale) do
         question.title = "#{question_title} (#{locale})"
       end
@@ -277,7 +277,7 @@ section "Creating Successful Proposals" do
                                           title: title.capitalize,
                                           description: description,
                                           given_order: index + 1)
-      I18n.available_locales.map do |locale|
+      Setting.enabled_locales.map do |locale|
         Globalize.with_locale(locale) do
           answer.title = "#{title} (#{locale})"
           answer.description = "#{description} (#{locale})"

db/pages/accessibility.rb

@@ -104,7 +104,7 @@ end
 
 if SiteCustomization::Page.find_by(slug: "accessibility").nil?
   page = SiteCustomization::Page.new(slug: "accessibility", status: "published")
-  I18n.available_locales.each do |locale|
+  Setting.enabled_locales.each do |locale|
     I18n.with_locale(locale) { generate_content(page) }
   end
 end

db/pages/census_terms.rb

@@ -7,7 +7,7 @@ end
 if SiteCustomization::Page.find_by(slug: "census_terms").nil?
   page = SiteCustomization::Page.new(slug: "census_terms", status: "published")
   page.print_content_flag = true
-  I18n.available_locales.each do |locale|
+  Setting.enabled_locales.each do |locale|
     I18n.with_locale(locale) { generate_content(page) }
   end
 end

db/pages/conditions.rb

@@ -8,7 +8,7 @@ end
 if SiteCustomization::Page.find_by(slug: "conditions").nil?
   page = SiteCustomization::Page.new(slug: "conditions", status: "published")
   page.print_content_flag = true
-  I18n.available_locales.each do |locale|
+  Setting.enabled_locales.each do |locale|
     I18n.with_locale(locale) { generate_content(page) }
   end
 end

db/pages/faq.rb

@@ -5,7 +5,7 @@ def generate_content(page)
 end
 if SiteCustomization::Page.find_by(slug: "faq").nil?
   page = SiteCustomization::Page.new(slug: "faq", status: "published")
-  I18n.available_locales.each do |locale|
+  Setting.enabled_locales.each do |locale|
     I18n.with_locale(locale) { generate_content(page) }
   end
 end

db/pages/privacy.rb

@@ -7,7 +7,7 @@ end
 if SiteCustomization::Page.find_by(slug: "privacy").nil?
   page = SiteCustomization::Page.new(slug: "privacy", status: "published")
   page.print_content_flag = true
-  I18n.available_locales.each do |locale|
+  Setting.enabled_locales.each do |locale|
     I18n.with_locale(locale) { generate_content(page) }
   end
 end

db/pages/welcome_level_three_verified.rb

@@ -17,7 +17,7 @@ end
 
 if SiteCustomization::Page.find_by(slug: "welcome_level_three_verified").nil?
   page = SiteCustomization::Page.new(slug: "welcome_level_three_verified", status: "published")
-  I18n.available_locales.each do |locale|
+  Setting.enabled_locales.each do |locale|
     I18n.with_locale(locale) { generate_content(page) }
   end
 end

db/pages/welcome_level_two_verified.rb

@@ -22,7 +22,7 @@ def generate_content(page)
 end
 if SiteCustomization::Page.find_by(slug: "welcome_level_two_verified").nil?
   page = SiteCustomization::Page.new(slug: "welcome_level_two_verified", status: "published")
-  I18n.available_locales.each do |locale|
+  Setting.enabled_locales.each do |locale|
     I18n.with_locale(locale) { generate_content(page) }
   end
 end

db/pages/welcome_not_verified.rb

@@ -22,7 +22,7 @@ def generate_content(page)
 end
 if SiteCustomization::Page.find_by(slug: "welcome_not_verified").nil?
   page = SiteCustomization::Page.new(slug: "welcome_not_verified", status: "published")
-  I18n.available_locales.each do |locale|
+  Setting.enabled_locales.each do |locale|
     I18n.with_locale(locale) { generate_content(page) }
   end
 end

spec/components/admin/locales/form_component_spec.rb

@@ -0,0 +1,37 @@
+require "rails_helper"
+
+describe Admin::Locales::FormComponent do
+  let(:default_locale) { :nl }
+  let(:enabled_locales) { %i[en nl] }
+  let(:locales_settings) { Setting::LocalesSettings.new(default: default_locale, enabled: enabled_locales) }
+  let(:component) { Admin::Locales::FormComponent.new(locales_settings) }
+
+  describe "default language selector" do
+    before { allow(I18n).to receive(:available_locales).and_return(%i[de en es nl]) }
+
+    it "renders radio buttons when there are only a few locales" do
+      render_inline component
+
+      page.find(:fieldset, "Default language") do |fieldset|
+        expect(fieldset).to have_checked_field "Nederlands", type: :radio
+        expect(fieldset).to have_unchecked_field "English", type: :radio
+        expect(fieldset).to have_unchecked_field "Español", type: :radio
+        expect(fieldset).to have_unchecked_field "Deutsch", type: :radio
+      end
+
+      expect(page).not_to have_select
+    end
+
+    it "renders a select when there are many locales" do
+      allow(component).to receive(:select_field_threshold).and_return(3)
+
+      render_inline component
+
+      expect(page).not_to have_field type: :radio
+
+      expect(page).to have_select "Default language",
+                                  options: %w[English Español Deutsch Nederlands],
+                                  selected: "Nederlands"
+    end
+  end
+end

spec/components/admin/site_customization/content_blocks/form_content_block_component_spec.rb

@@ -0,0 +1,19 @@
+require "rails_helper"
+
+describe Admin::SiteCustomization::ContentBlocks::FormContentBlockComponent do
+  describe "locale selector" do
+    let(:content_block) { create(:site_customization_content_block, locale: "de") }
+    let(:component) do
+      Admin::SiteCustomization::ContentBlocks::FormContentBlockComponent.new(content_block)
+    end
+
+    it "only includes enabled settings" do
+      Setting["locales.default"] = "de"
+      Setting["locales.enabled"] = "de fr"
+
+      render_inline component
+
+      expect(page).to have_select "locale", options: ["de", "fr"]
+    end
+  end
+end

spec/components/admin/site_customization/content_blocks/form_heading_content_block_component_spec.rb

@@ -0,0 +1,19 @@
+require "rails_helper"
+
+describe Admin::SiteCustomization::ContentBlocks::FormHeadingContentBlockComponent do
+  describe "locale selector" do
+    let(:content_block) { create(:heading_content_block, locale: "de") }
+    let(:component) do
+      Admin::SiteCustomization::ContentBlocks::FormHeadingContentBlockComponent.new(content_block)
+    end
+
+    it "only includes enabled settings" do
+      Setting["locales.default"] = "de"
+      Setting["locales.enabled"] = "de fr"
+
+      render_inline component
+
+      expect(page).to have_select "locale", options: ["de", "fr"]
+    end
+  end
+end

spec/components/admin/site_customization/information_texts/form_component_spec.rb

@@ -0,0 +1,29 @@
+require "rails_helper"
+
+describe Admin::SiteCustomization::InformationTexts::FormComponent do
+  describe "enabled_translations fields" do
+    it "renders fields for enabled locales" do
+      Setting["locales.enabled"] = "en es"
+      content = create(:i18n_content)
+
+      render_inline Admin::SiteCustomization::InformationTexts::FormComponent.new([[content]])
+
+      expect(page).to have_css "input[name^='enabled_translations']", count: 2, visible: :all
+      expect(page).to have_css "input[name='enabled_translations[en]']", visible: :hidden
+      expect(page).to have_css "input[name='enabled_translations[es]']", visible: :hidden
+    end
+  end
+
+  describe "text fields" do
+    it "renders fields for enabled locales" do
+      Setting["locales.enabled"] = "en es"
+      content = create(:i18n_content, key: "system.failure")
+
+      render_inline Admin::SiteCustomization::InformationTexts::FormComponent.new([[content]])
+
+      expect(page).to have_css "textarea[name^='contents[content_system.failure]']", count: 2, visible: :all
+      expect(page).to have_field "contents[content_system.failure]values[value_en]"
+      expect(page).to have_field "contents[content_system.failure]values[value_es]"
+    end
+  end
+end

spec/components/layout/locale_switcher_component_spec.rb

@@ -97,4 +97,21 @@ describe Layout::LocaleSwitcherComponent do
       expect(page).to have_css "[href='/?locale=en'][data-turbolinks=true]"
     end
   end
+
+  context "when not all available locales are enabled" do
+    before do
+      allow(I18n).to receive(:available_locales).and_return(%i[en es fr])
+      Setting["locales.default"] = "es"
+      Setting["locales.enabled"] = "es fr"
+    end
+
+    it "displays the enabled locales" do
+      render_inline component
+
+      expect(page).to have_link count: 2
+      expect(page).to have_link "Español"
+      expect(page).to have_link "Français"
+      expect(page).not_to have_link "English"
+    end
+  end
 end

spec/components/shared/globalize_locales_component_spec.rb

@@ -0,0 +1,49 @@
+require "rails_helper"
+
+describe Shared::GlobalizeLocalesComponent do
+  describe "Language selector" do
+    it "only includes enabled locales" do
+      Setting["locales.enabled"] = "en nl"
+
+      I18n.with_locale(:en) do
+        render_inline Shared::GlobalizeLocalesComponent.new
+
+        expect(page).to have_select options: ["Choose language", "English"]
+      end
+
+      I18n.with_locale(:es) do
+        render_inline Shared::GlobalizeLocalesComponent.new
+
+        expect(page).to have_select options: ["Seleccionar idioma"]
+      end
+    end
+  end
+
+  describe "links to destroy languages" do
+    it "only includes enabled locales" do
+      Setting["locales.enabled"] = "en nl"
+
+      I18n.with_locale(:en) do
+        render_inline Shared::GlobalizeLocalesComponent.new
+
+        expect(page).to have_css "a[data-locale]", count: 1
+      end
+
+      I18n.with_locale(:es) do
+        render_inline Shared::GlobalizeLocalesComponent.new
+
+        expect(page).not_to have_css "a[data-locale]"
+      end
+    end
+  end
+
+  describe "Add language selector" do
+    it "only includes enabled locales" do
+      Setting["locales.enabled"] = "en nl"
+
+      render_inline Shared::GlobalizeLocalesComponent.new
+
+      expect(page).to have_select options: ["Add language", "English", "Nederlands"]
+    end
+  end
+end

spec/controllers/application_controller_spec.rb

@@ -1,6 +1,14 @@
 require "rails_helper"
 
 describe ApplicationController do
+  controller do
+    skip_authorization_check
+
+    def index
+      render plain: I18n.locale
+    end
+  end
+
   describe "#current_budget" do
     it "returns the last budget that is not in draft phase" do
       create(:budget, :finished,  created_at: 2.years.ago, name: "Old")
@@ -12,4 +20,68 @@ describe ApplicationController do
       expect(budget.name).to eq("Current")
     end
   end
+
+  describe "#switch_locale" do
+    it "uses the default locale by default" do
+      Setting["locales.default"] = "pt-BR"
+
+      get :index
+
+      expect(response.body).to eq "pt-BR"
+    end
+
+    it "uses the locale in the parameters when it's there" do
+      get :index, params: { locale: :es }
+
+      expect(response.body).to eq "es"
+    end
+
+    it "uses the locale in the session if there are no parameters" do
+      get :index, params: { locale: :es }
+
+      expect(response.body).to eq "es"
+
+      get :index
+
+      expect(response.body).to eq "es"
+    end
+
+    it "uses the locale in the parameters even when it's in the session" do
+      get :index
+
+      expect(response.body).to eq "en"
+
+      get :index, params: { locale: :es }
+
+      expect(response.body).to eq "es"
+    end
+
+    it "only accepts enabled locales" do
+      Setting["locales.enabled"] = "en es fr"
+
+      get :index, params: { locale: :es }
+
+      expect(response.body).to eq "es"
+
+      get :index, params: { locale: :de }
+
+      expect(response.body).to eq "es"
+
+      get :index, params: { locale: :fr }
+
+      expect(response.body).to eq "fr"
+    end
+
+    context "authenticated user" do
+      let(:user) { create(:user) }
+      before { sign_in(user) }
+
+      it "updates the prefered locale when it's in the parameters" do
+        get :index, params: { locale: :es }
+
+        expect(user.reload.locale).to eq "es"
+        expect(response.body).to eq "es"
+      end
+    end
+  end
 end

spec/controllers/management/base_controller_spec.rb

@@ -1,6 +1,16 @@
 require "rails_helper"
 
 describe Management::BaseController do
+  before { session[:manager] = double }
+
+  controller do
+    skip_authorization_check
+
+    def index
+      render plain: I18n.locale
+    end
+  end
+
   describe "managed_user" do
     it "returns existent user with session document info if present" do
       session[:document_type] = "1"
@@ -21,4 +31,56 @@ describe Management::BaseController do
       expect(managed_user.document_number).to eq "333333333E"
     end
   end
+
+  describe "#switch_locale" do
+    it "uses the default locale by default" do
+      Setting["locales.default"] = "pt-BR"
+
+      get :index
+
+      expect(response.body).to eq "pt-BR"
+    end
+
+    it "uses the locale in the parameters when it's there" do
+      get :index, params: { locale: :es }
+
+      expect(response.body).to eq "es"
+    end
+
+    it "uses the locale in the session if there are no parameters" do
+      get :index, params: { locale: :es }
+
+      expect(response.body).to eq "es"
+
+      get :index
+
+      expect(response.body).to eq "es"
+    end
+
+    it "uses the locale in the parameters even when it's in the session" do
+      get :index
+
+      expect(response.body).to eq "en"
+
+      get :index, params: { locale: :es }
+
+      expect(response.body).to eq "es"
+    end
+
+    it "only accepts enabled locales" do
+      Setting["locales.enabled"] = "en es fr"
+
+      get :index, params: { locale: :es }
+
+      expect(response.body).to eq "es"
+
+      get :index, params: { locale: :de }
+
+      expect(response.body).to eq "es"
+
+      get :index, params: { locale: :fr }
+
+      expect(response.body).to eq "fr"
+    end
+  end
 end

spec/controllers/subscriptions_controller_spec.rb

@@ -19,5 +19,24 @@ describe SubscriptionsController do
       expect(response).to redirect_to "/"
       expect(flash[:alert]).to eq "No tienes permiso para acceder a esta página."
     end
+
+    it "uses the user locale where there's no locale in the parameters" do
+      create(:user, locale: "es", subscriptions_token: "mytoken")
+
+      get :edit, params: { token: "mytoken" }
+
+      expect(session[:locale]).to eq "es"
+    end
+
+    it "only accepts enabled locales" do
+      Setting["locales.default"] = "fr"
+      Setting["locales.enabled"] = "fr nl"
+
+      create(:user, locale: "es", subscriptions_token: "mytoken")
+
+      get :edit, params: { token: "mytoken" }
+
+      expect(session[:locale]).to eq "fr"
+    end
   end
 end

spec/form_builders/translatable_form_builder_spec.rb

@@ -0,0 +1,46 @@
+require "rails_helper"
+
+describe TranslatableFormBuilder do
+  before do
+    dummy_banner = Class.new(ApplicationRecord) do
+      def self.name
+        "DummyBanner"
+      end
+      self.table_name = "banners"
+
+      translates :title, touch: true
+      include Globalizable
+      has_many :translations, class_name: "DummyBanner::Translation", foreign_key: "banner_id"
+    end
+
+    stub_const("DummyBanner", dummy_banner)
+  end
+
+  let(:builder) do
+    TranslatableFormBuilder.new(:dummy, DummyBanner.new, ApplicationController.new.view_context, {})
+  end
+
+  describe "#translatable_fields" do
+    it "renders fields for the enabled locales when the translation interface is enabled" do
+      Setting["feature.translation_interface"] = true
+      Setting["locales.enabled"] = "en fr"
+
+      builder.translatable_fields do |translations_builder|
+        render translations_builder.text_field :title
+      end
+
+      expect(page).to have_field "Title", count: 2
+    end
+  end
+
+  attr_reader :content
+
+  def render(content)
+    @content ||= ""
+    @content << content
+  end
+
+  def page
+    Capybara::Node::Simple.new(content)
+  end
+end

spec/lib/search_dictionary_selector_spec.rb

@@ -3,27 +3,23 @@ require "rails_helper"
 describe SearchDictionarySelector do
   context "from I18n default locale" do
     before { allow(subject).to receive(:call).and_call_original }
-    around do |example|
-      original_i18n_default = I18n.default_locale
-      begin
-        example.run
-      ensure
-        I18n.default_locale = original_i18n_default
-      end
-    end
 
     it "returns correct dictionary for simple locale" do
-      I18n.default_locale = :es
+      Setting["locales.default"] = "es"
+
       expect(subject.call).to eq("spanish")
     end
 
     it "returns correct dictionary for compound locale" do
-      I18n.default_locale = :"pt-BR"
+      Setting["locales.default"] = "pt-BR"
+
       expect(subject.call).to eq("portuguese")
     end
 
     it "returns simple for unsupported locale" do
-      expect(I18n).to receive(:default_locale).and_return(:pl) # avoiding I18n::InvalidLocale
+      allow(I18n).to receive(:available_locales).and_return(%i[en pl])
+      Setting["locales.default"] = "pl"
+
       expect(subject.call).to eq("simple")
     end
   end

spec/mailers/mailer_spec.rb

@@ -30,6 +30,16 @@ describe Mailer do
     end
   end
 
+  describe "#user_invite" do
+    it "uses the default locale setting" do
+      Setting["locales.default"] = "es"
+
+      Mailer.user_invite("invited@consul.dev").deliver_now
+
+      expect(ActionMailer::Base.deliveries.last.body.to_s).to match "<html lang=\"es\""
+    end
+  end
+
   describe "#manage_subscriptions_token" do
     let(:user) { create(:user) }
     let(:proposal) { create(:proposal, author: user) }

spec/models/budget/content_block_spec.rb

@@ -20,6 +20,15 @@ describe Budget::ContentBlock do
     expect(valid_block).to be_valid
   end
 
+  it "is not valid with a disabled locale" do
+    Setting["locales.default"] = "pt-BR"
+    Setting["locales.enabled"] = "nl pt-BR"
+
+    block.locale = "en"
+
+    expect(block).not_to be_valid
+  end
+
   describe "#name" do
     it "uses the heading name" do
       block = Budget::ContentBlock.new(heading: Budget::Heading.new(name: "Central"))

spec/models/globalizable_spec.rb

@@ -0,0 +1,47 @@
+require "rails_helper"
+
+describe Globalizable do
+  before do
+    dummy_banner = Class.new(ApplicationRecord) do
+      def self.name
+        "DummyBanner"
+      end
+      self.table_name = "banners"
+
+      translates :title, touch: true
+      include Globalizable
+      has_many :translations, class_name: "DummyBanner::Translation", foreign_key: "banner_id"
+
+      validates_translation :title, length: { minimum: 7 }
+    end
+
+    stub_const("DummyBanner", dummy_banner)
+  end
+
+  describe ".validates_translation" do
+    it "validates length for the default locale" do
+      Setting["locales.default"] = "es"
+
+      dummy = DummyBanner.new
+      dummy.translations.build(locale: "es", title: "Short")
+      dummy.translations.build(locale: "fr", title: "Long enough")
+
+      I18n.with_locale(:fr) do
+        expect(dummy).not_to be_valid
+      end
+    end
+
+    it "does not validate length for other locales" do
+      Setting["locales.default"] = "es"
+
+      dummy = DummyBanner.new
+      dummy.translations.build(locale: "es", title: "Long enough")
+      dummy.translations.build(locale: "fr", title: "Long enough")
+      dummy.translations.build(locale: "en", title: "Short")
+
+      I18n.with_locale(:fr) do
+        expect(dummy).to be_valid
+      end
+    end
+  end
+end

spec/models/i18n_content_spec.rb

@@ -160,6 +160,17 @@ RSpec.describe I18nContent do
     end
 
     it "does not store new keys for disabled translations" do
+      Setting["locales.default"] = "es"
+      Setting["locales.enabled"] = "es"
+
+      I18nContent.update([{ id: "shared.yes", values: { "value_en" => "Oh, yeah" }}])
+
+      expect(I18nContent.all).to be_empty
+    end
+
+    it "uses different enabled translations when given a parameter" do
+      Setting["locales.enabled"] = "en es"
+
       I18nContent.update([{ id: "shared.yes", values: { "value_en" => "Oh, yeah" }}], [:es])
 
       expect(I18nContent.all).to be_empty

spec/models/setting/locales_settings_spec.rb

@@ -0,0 +1,13 @@
+require "rails_helper"
+
+describe Setting::LocalesSettings do
+  describe "#update!" do
+    it "saves the default locale in the enabled ones when nothing is enabled" do
+      Setting::LocalesSettings.new.update!(default: "es", enabled: %w[])
+      updated_locales_settings = Setting::LocalesSettings.new
+
+      expect(updated_locales_settings.default).to eq :es
+      expect(updated_locales_settings.enabled).to match_array [:es]
+    end
+  end
+end

spec/models/setting_spec.rb

@@ -258,4 +258,96 @@ describe Setting do
       expect(Setting.force_presence_postal_code?).to be true
     end
   end
+
+  describe ".available_locales" do
+    before { allow(I18n).to receive_messages(default_locale: :de, available_locales: %i[de en es pt-BR]) }
+
+    it "uses I18n available locales by default" do
+      Setting["locales.enabled"] = ""
+
+      expect(Setting.enabled_locales).to eq %i[de en es pt-BR]
+    end
+
+    it "defines available locales with a space-separated list" do
+      Setting["locales.enabled"] = "de es"
+
+      expect(Setting.enabled_locales).to eq %i[de es]
+    end
+
+    it "handles locales which include a dash" do
+      Setting["locales.enabled"] = "de en pt-BR"
+
+      expect(Setting.enabled_locales).to eq %i[de en pt-BR]
+    end
+
+    it "adds the default locale to the list of available locales" do
+      Setting["locales.enabled"] = "en es"
+
+      expect(Setting.enabled_locales).to eq %i[de en es]
+    end
+
+    it "ignores extra whitespace between locales" do
+      Setting["locales.enabled"] = " de  en   pt-BR "
+
+      expect(Setting.enabled_locales).to eq %i[de en pt-BR]
+    end
+
+    it "ignores locales which aren't available" do
+      Setting["locales.enabled"] = "de es en-US fr zh-CN"
+
+      expect(Setting.enabled_locales).to eq %i[de es]
+    end
+
+    it "ignores words that don't make sense in this context" do
+      Setting["locales.enabled"] = "yes de 1234 en SuperCool"
+
+      expect(Setting.enabled_locales).to eq %i[de en]
+    end
+
+    it "uses I18n available locales when no locale is available" do
+      Setting["locales.enabled"] = "nl fr zh-CN"
+
+      expect(Setting.enabled_locales).to eq %i[de en es pt-BR]
+    end
+  end
+
+  describe ".default_locale" do
+    before { allow(I18n).to receive_messages(default_locale: :en, available_locales: %i[de en es pt-BR]) }
+
+    it "uses I18n default locale by default" do
+      Setting["locales.default"] = ""
+
+      expect(Setting.default_locale).to eq :en
+    end
+
+    it "allows defining the default locale" do
+      Setting["locales.default"] = "de"
+
+      expect(Setting.default_locale).to eq :de
+    end
+
+    it "handles locales which include a dash" do
+      Setting["locales.default"] = "pt-BR"
+
+      expect(Setting.default_locale).to eq :"pt-BR"
+    end
+
+    it "ignores extra whitespace in the locale name" do
+      Setting["locales.default"] = " es "
+
+      expect(Setting.default_locale).to eq :es
+    end
+
+    it "ignores locales which aren't available" do
+      Setting["locales.default"] = "fr"
+
+      expect(Setting.default_locale).to eq :en
+    end
+
+    it "ignores an array of several locales" do
+      Setting["locales.default"] = "de es"
+
+      expect(Setting.default_locale).to eq :en
+    end
+  end
 end

spec/models/site_customization/content_block_spec.rb

@@ -27,4 +27,13 @@ RSpec.describe SiteCustomization::ContentBlock do
     block.name = "top_links"
     expect(block).not_to be_valid
   end
+
+  it "is not valid with a disabled locale" do
+    Setting["locales.default"] = "nl"
+    Setting["locales.enabled"] = "nl pt-BR"
+
+    block.locale = "en"
+
+    expect(block).not_to be_valid
+  end
 end

spec/models/user_spec.rb

@@ -81,6 +81,16 @@ describe User do
     end
   end
 
+  describe "#locale" do
+    it "defaults to the default locale setting" do
+      Setting["locales.default"] = "nl"
+
+      user = build(:user, locale: nil)
+
+      expect(user.locale).to eq "nl"
+    end
+  end
+
   describe "preferences" do
     describe "email_on_comment" do
       it "is false by default" do

spec/system/admin/banners_spec.rb

@@ -65,7 +65,7 @@ describe "Admin banners magement", :admin do
 
     within("#side_menu") do
       click_button "Site content"
-      click_link "Manage banners"
+      click_link "Banners"
     end
 
     click_link "Create banner"
@@ -134,7 +134,7 @@ describe "Admin banners magement", :admin do
 
     within("#side_menu") do
       click_button "Site content"
-      click_link "Manage banners"
+      click_link "Banners"
     end
 
     click_link "Edit"

spec/system/admin/geozones_spec.rb

@@ -16,7 +16,7 @@ describe "Admin geozones", :admin do
 
     within("#side_menu") do
       click_button "Settings"
-      click_link "Manage geozones"
+      click_link "Geozones"
     end
 
     click_link "Create geozone"

spec/system/admin/locales_spec.rb

@@ -0,0 +1,54 @@
+require "rails_helper"
+
+describe "Locales management", :admin do
+  scenario "Navigate to languages page and update them" do
+    allow(I18n).to receive(:available_locales).and_return(%i[de en es fr])
+    Setting["locales.default"] = "en"
+    Setting["locales.enabled"] = "en de"
+
+    visit admin_root_path
+
+    within ".locale" do
+      expect(page).to have_css "[aria-current]", exact_text: "English"
+
+      expect(page).to have_link "English"
+      expect(page).to have_link "Deutsch"
+      expect(page).not_to have_link "Français"
+      expect(page).not_to have_link "Español"
+    end
+
+    within "#admin_menu" do
+      expect(page).not_to have_link "Languages"
+
+      click_button "Settings"
+      click_link "Languages"
+
+      expect(page).to have_css "[aria-current]", exact_text: "Languages"
+      expect(page).to have_link "Languages"
+    end
+
+    within_fieldset "Default language" do
+      expect(page).to have_checked_field "English"
+
+      choose "Español"
+    end
+
+    within_fieldset "Enabled languages" do
+      uncheck "English"
+      check "Français"
+    end
+
+    click_button "Save changes"
+
+    expect(page).to have_content "Languages updated successfully"
+
+    within ".locale" do
+      expect(page).to have_css "[aria-current]", exact_text: "Español"
+
+      expect(page).to have_link "Français"
+      expect(page).to have_link "Español"
+      expect(page).to have_link "Deutsch"
+      expect(page).not_to have_link "English"
+    end
+  end
+end

spec/system/admin/poll/booths_spec.rb

@@ -39,7 +39,7 @@ describe "Admin booths", :admin do
 
     within("#side_menu") do
       click_button "Voting booths"
-      click_link "Manage shifts"
+      click_link "Shifts Assignments"
     end
 
     expect(page).to have_css(".booth", count: 1)
@@ -80,7 +80,7 @@ describe "Admin booths", :admin do
     visit admin_booths_path
 
     within("#booth_#{booth.id}") do
-      expect(page).not_to have_link "Manage shifts"
+      expect(page).not_to have_link "Shifts Assignments"
       click_link "Edit"
     end
 
@@ -105,7 +105,7 @@ describe "Admin booths", :admin do
     visit available_admin_booths_path
 
     within("#booth_#{booth.id}") do
-      click_link "Manage shifts"
+      click_link "Shifts Assignments"
     end
 
     click_link "Go back"

spec/system/admin/poll/shifts_spec.rb

@@ -44,7 +44,7 @@ describe "Admin shifts", :admin do
     visit available_admin_booths_path
 
     within("#booth_#{booth.id}") do
-      click_link "Manage shifts"
+      click_link "Shifts Assignments"
     end
 
     expect(page).to have_content "This booth has no shifts"
@@ -71,7 +71,7 @@ describe "Admin shifts", :admin do
     visit available_admin_booths_path
 
     within("#booth_#{booth.id}") do
-      click_link "Manage shifts"
+      click_link "Shifts Assignments"
     end
 
     expect(page).to have_css(".shift", count: 1)
@@ -117,7 +117,7 @@ describe "Admin shifts", :admin do
     visit available_admin_booths_path
 
     within("#booth_#{booth.id}") do
-      click_link "Manage shifts"
+      click_link "Shifts Assignments"
     end
 
     expect(page).to have_css(".shift", count: 2)
@@ -159,7 +159,7 @@ describe "Admin shifts", :admin do
     visit available_admin_booths_path
 
     within("#booth_#{booth.id}") do
-      click_link "Manage shifts"
+      click_link "Shifts Assignments"
     end
 
     expect(page).to have_content "This booth has no shifts"
@@ -182,7 +182,7 @@ describe "Admin shifts", :admin do
     visit available_admin_booths_path
 
     within("#booth_#{booth.id}") do
-      click_link "Manage shifts"
+      click_link "Shifts Assignments"
     end
 
     expect(page).to have_css(".shift", count: 1)
@@ -208,7 +208,7 @@ describe "Admin shifts", :admin do
     visit available_admin_booths_path
 
     within("#booth_#{booth.id}") do
-      click_link "Manage shifts"
+      click_link "Shifts Assignments"
     end
 
     expect(page).to have_css(".shift", count: 1)
@@ -237,7 +237,7 @@ describe "Admin shifts", :admin do
     visit available_admin_booths_path
 
     within("#booth_#{booth.id}") do
-      click_link "Manage shifts"
+      click_link "Shifts Assignments"
     end
 
     expect(page).to have_css(".shift", count: 1)