JSON object manipulation

Question

Let\'s suppose that we have the following JSON Object that describes a Person:

{
 \"firstName\": \"John\",
 \"lastName\": \"Smith\",
 \"age\": 25,
 \"address         


        

Answer 1

just parse it and change it

hash = JSON.parse(json_data)
hash["firstname"] = "John"
hash.delete("lastname")
new_json = hash.to_json

P.S. JSON.parse might not work - it depends on which JSON library you're using. try this instead:

ActiveSupport::JSON.decode(json_data)