CODEWITHSUNDEEP
paw-app
Cameron Horton - StubHub
Cameron Horton - StubHub

Reputation: 31

Persist result of dynamic value

I have a chain of requests that walk through a multi-step transaction. I want to generate a value for an orderId and itemId in the first request and reuse the values in each subsequent request.

I've used the Chance extension to generate each of these ids in the first request.

In subsequent requests, I'm using the Request Parsed Body dynamic value and referencing the JSON attribute where each of these ids was created.

Rather than returning the value from the first request, it is generating a new id using the Chance extension.

My APIs require these two values to be consistent across a group of requests. How can I get this to happen correctly?

NOTE: I also tried this with the values defined in an environment thinking that the environment would be evaluated once, but that also results in a different value on each request in the group.

I can create a custom extension to accommodate this but I am not sure how best to approach the problem. Advice would be appreciated.

Upvotes: 2

Views: 85

Answers (1)

Matthaus Woolard
Matthaus Woolard

Reputation: 2408

We've just published 5 new Dynamic Values, that will let you re-use random values sent in headers, URL params, body and request URL. Here is the link: https://luckymarmot.com/paw/extensions/?extension_type=dynamic_value&q=sent

Assuming you have:

  • Request A
  • Request B (B requires some value from A)

The solution is to get the value from the last HTTPExchange of A.

The only way to do this at the moment is through a custom dynamic value (inline JS)

function evaluate(context){
    const otherRequest = context.getRequestByName('Request A')
    const lastExtrange = otherRequest.getLastExchange()
    return JSON.parse(lastExtrange.requestBody).email // to get the body
    return lastExtrange.getRequestHeaderByName('X-some-header-from-a')
};

This can be placed in request B were you want the value from A:

enter image description here

For reference of the api see: HTTPExchange

Upvotes: 2

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