Let’s say you’re building a Rails 5 app and you want to add a “marketing site” to the public-facing side of your app. In my opinion, the cleanest way to do this is to create a public-facing
PagesController with methods for each page:
rails g controller Pages home about help contact
Then, set up your routes:
root to: "pages#home"
get '/about' => 'pages#about'
get '/help' => 'pages#help'
get '/contact' => 'pages#contact'
And finally, create app/views/pages/home.html.erb, app/views/pages/about.html.erb, and so on.