How to Parse a value in a nested JSON using Postman

Question

I am trying to parse the json response from post request and send the parsed data to put request this is my response body

    {
        "createdBy": "student",
        "createdOn": "2019-06-18",
        "Id1": "0e8b9445-4bd9-4d31",
        "Tl": [
            {
                "createdBy": "student",
                "createdOn": "2019-06-18",
                "Id2": "d46eeb88-f876-4468"
            }
        ]
    }

I am parsing id1 and id2 which are auto generated. This is the code I am writing in tests

var jsonData = JSON.parse(responseBody);
postman.setEnvironmentVariable("Id1", jsonData.Id1);
postman.setEnvironmentVariable("Id2", jsonData.Tl[2].Id2);

id1 is working but I am unable to access Id2 and getting the error after post as

typeerror cannot read Id2 property

and I am accessing Id2 in put request as {{Id2}}

`jsonData.Tl` has only one element so you should use `jsonData.Tl[0].Id2` — barbsan, Jun 18 '19 at 09:41
Does this answer your question? [Checking a value in a nested JSON using Postman](https://stackoverflow.com/questions/42850233/checking-a-value-in-a-nested-json-using-postman) — Henke, Jan 24 '21 at 08:36

score 1 · Answer 1 · answered Jun 18 '19 at 10:34

In the following statement, you are trying to access the 3rd element (index: 2) of the array with key 'Tl' :

postman.setEnvironmentVariable("Id2", jsonData.Tl[2].Id2);

You should access the 1st element only (index:0) :

postman.setEnvironmentVariable("Id2", jsonData.Tl[0].Id2);

score 0 · Answer 2 · answered Jun 18 '19 at 10:29

0

There's only one element in jsonData.Tl - so jsonData.Tl[2] is undefined. Use jsonData.Tl[0] to access the first element.

var jsonData = JSON.parse(responseBody);
postman.setEnvironmentVariable("Id1", jsonData.Id1);
postman.setEnvironmentVariable("Id2", jsonData.Tl[2].Id2);

answered Jun 18 '19 at 10:29

Jack Bashford

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tried using same but i am getting error as typeerror cannot read Id2 property – twittyph Jun 19 '19 at 07:06

How to Parse a value in a nested JSON using Postman

2 Answers2