How to receive a JSON object with Rack
env['rack.input'].getsThis worked for me. I found that using curl or wget to test POST requests against a Rack (v1.4.1) server required using this code as a fallback to get the request body. POST requests out in the wild (e.g. GitHub WebHooks) didn't have this same problem.
It seems that I'm supposed to use something like:
msg = JSON.parse env['rack.input'].read Then just use params in the msg hash.
At least it worked for me this way.
One more way to do that:
# ...request = Rack::Request.new envobject = JSON.parse request.body.gets# ...See the documentation: www.rubydoc.info/gems/rack/Rack/Lint/InputWrapper