Реализация Page и DataCardWidget

api/config/routes.rb

@@ -0,0 +1,14 @@
+Rails.application.routes.draw do
+  get "up" => "rails/health#show", as: :rails_health_check
+
+  namespace :api do
+    namespace :v1 do
+      post "selected_index", to: "channels#selected_index"
+      resources :channels, only: %i[index show] do
+        scope module: :channels do
+          resources :histories, only: :index
+        end
+      end
+    end
+  end
+end