Add action Settings::AppearancesController#edit

app/controllers/settings/appearances_controller.rb

@@ -0,0 +1,16 @@
+# frozen_string_literal: true
+
+class Settings::AppearancesController < ApplicationController
+  before_action :set_account
+
+  # GET /settings/appearance/edit
+  def edit
+    authorize %i[settings appearance]
+  end
+
+private
+
+  def set_account
+    @account = current_account.clone&.reload
+  end
+end

app/policies/settings/appearance_policy.rb

@@ -0,0 +1,7 @@
+# frozen_string_literal: true
+
+class Settings::AppearancePolicy < ApplicationPolicy
+  def update?
+    !!account
+  end
+end

app/views/settings/_nav_sidebar.html.erb

@@ -9,6 +9,10 @@
     policy(%i[users registration]).edit?,
     edit_user_registration_path,
   ],
+  appearance: [
+    policy(%i[settings appearance]).edit?,
+    edit_settings_appearance_path,
+  ],
   person: [
     policy(%i[settings person]).show?,
     settings_person_path,

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

@@ -0,0 +1,10 @@
+<div class="container">
+  <div class="row">
+    <div class="col-md-3 mb-4">
+      <%= render partial: 'settings/nav_sidebar', locals: { tab: :appearance } %>
+    </div>
+
+    <div class="col-md-9">
+    </div>
+  </div>
+</div>

config/locales/nav_tabs/en.yml

@@ -8,6 +8,7 @@ en:
     settings:
       credentials: Credentials
       profile: Public profile
+      appearance: Appearance
       person: Person
       contacts: Contacts
       sessions: Sessions

config/locales/nav_tabs/ru.yml

@@ -8,6 +8,7 @@ ru:
     settings:
       credentials: Данные для входа
       profile: Публичный профиль
+      appearance: Внешний вид
       person: Личность
       contacts: Контакты
       sessions: Сессии

config/routes.rb

@@ -32,6 +32,7 @@ Rails.application.routes.draw do
 
   namespace :settings do
     resource :profile, only: %i[edit update]
+    resource :appearance, only: :edit
     resource :person, only: %i[show new]
     resources :contacts, only: %i[index create destroy]
     resources :sessions, only: :index

spec/policies/settings/appearance_policy_spec.rb

@@ -0,0 +1,7 @@
+# frozen_string_literal: true
+
+require 'rails_helper'
+
+RSpec.describe Settings::AppearancePolicy do
+  pending "add some examples to (or delete) #{__FILE__}"
+end

spec/requests/settings/appearances/edit_spec.rb

@@ -0,0 +1,22 @@
+# frozen_string_literal: true
+
+require 'rails_helper'
+
+RSpec.describe 'GET /settings/appearance/edit' do
+  before do
+    sign_in current_account.user if current_account&.user
+    get '/settings/appearance/edit'
+  end
+
+  for_account_types nil do
+    specify do
+      expect(response).to have_http_status :forbidden
+    end
+  end
+
+  for_account_types :usual, :superuser do
+    specify do
+      expect(response).to have_http_status :ok
+    end
+  end
+end