Question

I have configured my application to do realtime updates.

The verification has been done and I get an update when the (text) user uploads a photo. This is good. But the POST data is completely empty, no data.

post "/fb_realtime_updates" do
  puts params[:object]
end

That will print “{}”. Is there something I am missing?

Answer 1

http://www.sinatrarb.com/intro#Accessing%20the%20Request%20Object suggests you should be using

post "/fb_realtime_updates" do
  request.body.rewind  # in case someone already read it
  data = JSON.parse request.body.read
  puts data['object']
end

I don’t have a Ruby/Sinatra environment to test this.