Is there a built-in Ruby way to convert a query string directly into a JSON object?

Question

If I had a string :

"TimeStamp=1320947201017&enumber=34646"

And wanted this to be JSON :

{ "TimeStamp" : "1320947201017", "enumber" : "34646" }

Is there a built-in way to accomplish this in Ruby?

No.. you did it wrong :-) *query string to Json*... like this.. — Arup Rakshit, Mar 13 '14 at 13:54

Arup Rakshit · Accepted Answer · 2014-03-13T13:58:47.710

9

Do as below :

require 'uri'
require 'json'

Hash[URI.decode_www_form("TimeStamp=1320947201017&enumber=34646")].to_json
# => "{\"TimeStamp\":\"1320947201017\",\"enumber\":\"34646\"}"

Documentation - decode_www_form and Generating JSON

edited Mar 13 '14 at 13:58

answered Mar 13 '14 at 13:40

Arup Rakshit

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2

Wow that's really interesting. I had never seen that before. Thanks! – Trip Mar 13 '14 at 13:41
4

I thought that the OP wanted it in JSON, not a Ruby hash. bjhaid's edit makes it do that, but bjhad should not have edited someone else's code. It is inappropriate to change someone else's answer substantially. – sawa Mar 13 '14 at 13:43
You added `to_json` but forgot to update the output from Hash to JSON. – Kirti Thorat Mar 13 '14 at 13:52
@KirtiThorat Thank youuuuuuuu... :-) I always forgot... everything :p – Arup Rakshit Mar 13 '14 at 13:56
Yup. #=> "{\"TimeStamp\":\"1320947201017\",\"enumber\":\"34646\"}" – Kirti Thorat Mar 13 '14 at 13:58
@KirtiThorat I used in my editor `puts` which gave exactly the same as OP... But I removed `puts` here, and *forgot* to change the output.. – Arup Rakshit Mar 13 '14 at 13:59
`puts` will give that but `irb` would give this(escape "). – Kirti Thorat Mar 13 '14 at 14:01
@KirtiThorat.. Yes,, I know. That was my mistake.. Like I always did. You know it better.. :-) – Arup Rakshit Mar 13 '14 at 14:03

score 5 · Answer 2 · edited Mar 13 '14 at 13:45

5

Convert it to a hash, then convert the hash to json, both using rails' inbuilt methods.

require 'rack/utils'
#=> []
paramstring = "TimeStamp=1320947201017&enumber=34646"
#=> "TimeStamp=1320947201017&enumber=34646"
hash = Rack::Utils.parse_nested_query(paramstring)
#=> {"TimeStamp"=>"1320947201017", "enumber"=>"34646"}
hash.to_json    
#=> "{\"TimeStamp\":\"1320947201017\",\"enumber\":\"34646\"}"

edited Mar 13 '14 at 13:45

Arup Rakshit

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answered Mar 13 '14 at 13:44

Max Williams

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Wow Max Williams, you're a legend! Thanks! – Trip Mar 13 '14 at 13:50

Is there a built-in Ruby way to convert a query string directly into a JSON object?

2 Answers2