Return JSON in Sinatra

Returning JSON from a Sinatra endpoint is really easy. You just have to to the following :

require 'sinatra'
require 'json'

get '/hi' do
  # Specify the content type to return, json
  content_type :json
  { song: "Wake me Up" }.to_json
end

If you want to configure it for all your routes :

require 'sinatra'
require 'json'

before do
  content_type :json
end

get '/hi' do
  { song: "Wake me Up" }.to_json
end

Hope it helps ;)

Tibo