How to store a JSON in a variable and use it in the request body?

Ask the Experts and Postman Tips
11

In the first request, on test I’ll put this code:

let Cities = JSON.parse(responseBody),
CityIds = _.map(body, (city) => city.id);

// Store all the Cities Ids in the environment variable
pm.environment.set('CityIdsList', JSON.stringify(CityIds));

// Store the next index of the array for City ids
pm.environment.set('nextIndex', 0);

// Store the active City ID 
pm.environment.set('activeCityId', CityIds[0]);

Then, on the second request I’ll use this one:

let CityIds = JSON.parse(pm.environment.get('CityIdsList')),
    nextIndex = parseInt(pm.environment.get('nextIndex')) + 1;

if (CityIds.length === nextIndex) {
    pm.environment.set('nextIndex', 0);
    pm.environment.set('activeCityId', CityIds[0]);

    postman.setNextRequest(null);
} else {
    let activeRODID = CityIds[nextIndex];
    pm.environment.set('nextIndex', nextIndex);
    pm.environment.set('activeCityId', activeCityId);
    postman.setNextRequest("Second Request");
}

Perhaps there is a more efficient way to do it, but this will work.