Ruby - Unexpected Hash data structure

Question

A simple question:

In rails I get as response an hash like this:

{"success":true,"new_id":816704027}

So, the difference from a normal structure I guess is- "new_id": -instead of- new_id:

Does anyone know how to retrieve the data labelled "new_id"? The usual array["new_id"] doesn't work.

The response to the code:

new_customer_id = @response.body
puts new_customer_id
puts new_customer_id["new_id"]

is simply:

=> {"success":true,"new_id":816704028}
=> new_id

I come from the implementation of JSON_response. Anyway, they changed the app and I don't have anymore a JSON message, but they use the method:

return_200(additional_items: {:new_id => "@customer.id"} )

More:

If I write:

new_customer_id = @response.body
puts new_customer_id
puts new_customer_id[:new_id]

the answer printed is simply:

=> {"success":true,"new_id":816704028}

and the request for the :new_id content does not to be received.

Much more interesting is the following: After the fact that:

puts new_customer_id["new_id"]

prints:

=> new_id

If I write:

puts new_customer_id["new_id"][0]
puts new_customer_id["new_id"][1]
puts new_customer_id["new_id"][2]
...

I obtain:

=> n
=> e
=> w
...

Also:

if I write:

puts new_customer_id["new_"]
puts new_customer_id["new_i"]

I obtain:

=> new_
=> new_i

and if I write:

puts new_customer_id["new_id_anyOtherCharacter"]

I get nothing

Luca

Why doesn't array["new_id"] work? what errors do you get when using it? — Tamer Shlash
– Tamer Shlash, Commented Jun 1, 2015 at 11:32
Try this in Rails Console a = ActiveSupport::JSON.decode('{"success":true,"new_id":816704027}') then access it using a["new_id"] — Amit Sharma
– Amit Sharma, Commented Jun 1, 2015 at 11:33
@LucaDanieli Please edit your question to add details, rather than adding them as an answer. — Sébastien Le Callonnec
– Sébastien Le Callonnec, Commented Jun 1, 2015 at 11:52

Daiku · Accepted Answer · 2015-06-01 13:48:39Z

2

That's not a ruby object you are getting back. It's JSON. You can get the new_id in a variety of ways:

JSON.parse(@response.body)["new_id"]

JSON.parse(@response.body).symbolize_keys[:new_id]

JSON.parse(@response.body).with_indifferent_access[:new_id]

answered Jun 1, 2015 at 13:48

Daiku

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Comments

Segfault · Accepted Answer · 2015-06-01 11:54:33Z

0

I bet the hash has a symbol key instead of a string key. Try with array[:new_id].

answered Jun 1, 2015 at 11:54

Segfault

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1 Comment

TakeMeToTheMoon Over a year ago

that doesn't work. I don't know why but it doesn't give me any answer. I updated the question, so you can read what happens

Uday kumar das · Accepted Answer · 2015-06-01 12:09:53Z

0

use params to get the value like:

new_id= array[:new_id]

edited Jun 1, 2015 at 12:09

answered Jun 1, 2015 at 11:30

Uday kumar das

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2 Comments

Tamer Shlash Over a year ago

He clearly said a "response" hash, not a params hash.

Uday kumar das Over a year ago

I have just changed the answer, please undo your down voting

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