API call PUT JSON content array instead of object

[micky_b]

Hi all,

I am creating a service which calls an external API using the Put JSON content loader function. I am having a problem with the content part of the params in the function where Thingworx expects me to send a JSON object but the API expects to receive an array of objects.

What I want to do:

var params = {
    headers: {headers_here},
    url: url_here
    //Thingworx expects content to be wrapped in {} but I need it to be []
    content: [{object: here}, {object: here}, {object: here}]
};

I don't get any errors on Thingworx but it doesn't change anything on the external API side. It works when sending through Postman so I suspect Thingworx is doing something behind the scenes to change the format of the data. 

Any help would be brilliant

[wposner-2]

You will most likely have to write a custom extension.  You mentioned you're not getting any response back from the API?  I had the exact same problem when trying to send a file using the PostBinary and PostMultipart.  The only way I was able to get things to work was through a custom Java extension that implemented the Post call exactly as the API I was calling was expecting things.

[Rick-Stanley · Accepted solution]

It does appear that PutJSON wraps a bare array inside an element named "array"

You can use PutText with a contentType header of "application/json" to send a bare array.

Notice this website postman-echo.com/put that reflects back whatever you send it is very helpful for debugging

var params = {
    url: "https://postman-echo.com/put",
	content: [{"val1": "firstVal"}, {"val2": "secondVal"}, {"val3": "thirdVal"}],
    contentType: "application/json"
};

// result: STRING
var result = Resources["ContentLoaderFunctions"].PutText(params);

[micky_b]

This worked perfectly! Thanks a lot