Would like to be able to pass JSON list retrieved from one API to another

[danielbprice]

I believe this is issue is adjacent to but different from #790 and #347.

I have an API from which I can retrieve a list of objects. I can extract from that API's response a list which I would like to submit to another API. What I would like to do looks roughly like this:

GET {{url}}/api/devices

HTTP/* 200
[Captures]
all_devices: jsonpath "$[*]['id']"

# -- Create CSV Report of device activity from list of devices
POST {{url}}/api/report
Accept: text/csv
Content-Type: application/json
{
    "devices": {{all_devices}}
}

What I am finding is that this is impossible because the collection value is not allowed to be rendered:

error: Unrenderable variable
  --> hurl-tests/scandata-csv.hurl:45:20
   |
45 |     "devices": {{all_devices}}
   |                  ^^^^^^^^^^^ value [ecd3f0a9-8b58-492b-8770-7cfdfa4fa2d0,f7f75e86-7326-4c63-b35e-e3a4669e6ae5,fec5917d-c73c-4cf8-873f-1e715e589da3] can not be rendered

I sort-of understand why this is the case, but on the other hand, the data came from JSON, and clearly can be rendered to JSON, so the limitation here seems slightly arbitrary. I guess the problem is that there is no syntax to tell it that the data should be rendered out as JSON?

In my ideal world, this collection would render to JSON, and I could use this value in the second API call. Thanks!

[fabricereix]

Yes, we should be able to sent JSON Object/List.
we could add an helper funtion within the template (similar to #312, #606)

{{all_devices | to_json}}

[AdmiralRazorbeard]

Pretty sad it's not available yet as it seems like a pretty common scenario when working with apis (still I'm very grateful to hurl devs 🙏) . I have the exact same need as daniel.

In my workflow I need to chain the whole json body/ parts of it from one request to another. Is there any workaround to achieve the same ? Maybe by storing the json body response in a temporary file and re-using it somehow ?

[jcamiel]

Hi @AdmiralRazorbeard

If you need to capture / reuse the whole body of a response, this is rather simple, you can just capture the body of a response and reinject it. For instance:

GET https://foo.com
HTTP 200
[Captures]
the_body: body

POST https://bar.com
```
{{the_body}}
```
HTTP 200

I think it should work

[fiedlr]

Hi @AdmiralRazorbeard

If you need to capture / reuse the whole body of a response, this is rather simple, you can just capture the body of a response and reinject it. For instance:

GET https://foo.com
HTTP 200
[Captures]
the_body: body

POST https://bar.com

{{the_body}}

HTTP 200

I think it should work

Thanks so much for your help, I confirm it works! But one needs to set Content-Type header to application/json.

[jcamiel]

Yes or you can use a json hint also:

POST https://bar.com
```json
{{the_body}}
```
HTTP 200