Access Elements in JSON

Question

i want to access elements in JSON.

My JSON looks like:

{
"@odata.context":
"https://www.ccyyxxxyyy5......com.ne.de/odata/$metadata#Product(Id,Name)
/$entity","Id":1,"Name":"Build your own computer"
 }

I want only access "Id" and "Name". How can I do that? Can anybode make me an example?

What have you tried so far? Have you [read the documentation on JSON](http://ruby-doc.org/stdlib/libdoc/json/rdoc/JSON.html)? Have you read any [other StackoverFlow answers](http://stackoverflow.com/a/34295262/1954610) on how to parse JSON? Please see [How do I ask a good question](https://stackoverflow.com/help/how-to-ask) for advice on what to do before posting. — Tom Lord, May 02 '17 at 11:54

Md. Farhan Memon · Answer 1 · 2017-05-02T15:35:33.170

0

Suppose you json is saved in my_json, it is very much similar to hash, just that the keys are stringified. my_json[key] is the syntax to get the value of key. In your case:

my_json['Id']
#=> 1

You seem to be working with JSON array, then:

names = my_json.map { |j| j['Name'] }
#=> ["Build your own computer", ..]

Based on json body provided:

data_array = data['value']
name_at_0 = data_array[0]['Name']
name_at_1 = data_array[1]['Name']
#=> etc...

edited May 02 '17 at 15:35

answered May 02 '17 at 11:54

Md. Farhan Memon

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Hi, thank you for your answer. How can I access the elements when I have more than one element with the same keys? – r.az91 May 02 '17 at 14:11
same multiple keys within the same hash is a malformed json, it should not be the case as keys are identifiers and it has to be unique. – Md. Farhan Memon May 02 '17 at 14:22
share your example json you want to traverse. – Md. Farhan Memon May 02 '17 at 14:28
data = ActiveSupport::JSON.decode(res.body) @title = data[1]["Name"] – r.az91 May 02 '17 at 15:00
this is my last version of test – r.az91 May 02 '17 at 15:00
i get only blank screen – r.az91 May 02 '17 at 15:04
why `data[1]`? if you have json array, check my updated answer. If it doesn't work, share output of `ActiveSupport::JSON.decode(res.body)` or `data`. – Md. Farhan Memon May 02 '17 at 15:12
the output of data: {"@odata.context"=>"https://cxcxcxcxssss.ne.com.c.de/odata/$metadata#Product", "value" =>[{"ProductTypeId" =>5, "Id" => 1, "Name"=>"Test"},{"ProductTypeId" =>5, "Id" => 2, "Name"=>"Test2"}, and so on – r.az91 May 02 '17 at 15:24
i want access the elements seperately like data[0]["Name"] – r.az91 May 02 '17 at 15:25
You should have provided that earlier. Nevamind, check my edit and it should work now. Please provide full details when you post your next question henceforth and also go through the links provided in the comments above. – Md. Farhan Memon May 02 '17 at 15:37

Access Elements in JSON

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