POST JSON data to simple rails application with curl

Question

I set up a simple new rails application with model entry, with attributes title and content using scaffolding.

now I am trying to use curl to

Answer 1

take a block of JSON

{\"a\":\"this_is_a\"}

and url encode it

%7B%22a%22%3A%22this_is_a%22

and then use curl to post it

curl -i --data "working_params=%7B%22a%22%3A%22this_is_a%22" http://url/accepts/json