Postman - dynamic variable for a value from array

Question

How could I add an automatic environmental variable in Postman based on a value which is appearing in the endpoint response in the array?

In the example below, I would like to use the "id3" value and save it as a dynamic variable.

    {
    "test": 123,
    "test2": [],
    "test3": [
            {
                "id": 0,
                "id2": 4554336,
                "id3": 30,
                "id4": 0
            }
        ]
    }

I thought it will be simple as:

let jsonData = pm.response.json();
pm.environment.set("test_name", jsonData.test3.id);

but this set up is saving the variable with a null value.

PDHide · Accepted Answer · 2020-12-07 15:53:55Z

1

 let jsonData = pm.response.json(); 
pm.environment.set("test_name", jsonData.test3[0].id3);

test3 is an array so you have to get the first object and then id3

answered Dec 7, 2020 at 15:53

PDHide

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PDHide Over a year ago

@wer could you accept the answer by clicking the tick sign near to the answer

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