JSON from Javascript Object to Ruby

Question

I'm sending an object from Javascript to a Sinatra POST route. I'm using the 'stringify' method to convert my js object to JSON. The JSON being sent is like so (according to the dev tools in chrome):

{"a":1,"b":2,"c":"3"}:

I have my route in Sinatra setup like so:

post '/results' do
    results = JSON.parse(params.to_json, symbolize_names: true)
end

I can't figure how to access the keys in Ruby once I parse the JSON. Is there a better way to do so, am I missing something?

score 2 · Accepted Answer · edited May 23 '17 at 10:25

2

I believe that if you are sending the JSON in the POST body - you should access it from request.body, and not from params (see this question: How to parse JSON request body in Sinatra just once and expose it to all routes?):

post '/results' do
  request.body.rewind
  results = JSON.parse(request.body.read, symbolize_names: true)
end

edited May 23 '17 at 10:25

Community

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answered Mar 18 '14 at 20:29

Uri Agassi

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score 0 · Answer 2 · answered Mar 18 '14 at 20:26

0

You should be able to access it like an associative array:

results["a"]
results["b"]
...

answered Mar 18 '14 at 20:26

TheAJ

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I get nil when I try and access it like that. – jmcharnes Mar 18 '14 at 20:29
@jmcharnes try removing the symbolize_names parameter. – TheAJ Mar 18 '14 at 20:31

JSON from Javascript Object to Ruby

2 Answers2