How to render static HTML files in Sinatra.

sinatra_render_html.rb

require 'sinatra'

get '/' do
  File.read(File.join('public', 'index.html'))
  # or
  # send_file File.join(settings.public, 'index.html')
end

sinatra_render_html_refactor.rb

require "sinatra"

get '/' do
  # File.read(File.join('public', 'index.html'))
  html :index
end

def html(view)
  File.read(File.join('public', "#{view.to_s}.html"))
end