Get size/length of elements() // JavaScript Task - Modeler

Camunda 7 Topics Discussion & Questions
1

Is it possible to get the length of a json/spin list ?

json.prop("array").elements()

or a simple solution to check if the array is empty or contains elements?

Another question: I work with the REST API to get some input (JSON-String) - values to can work in the Camunda Modeler. To use them i have to convert the values by using Camunda Spin S(json).
To navigate through the json tree, always i have to do this “prop” notation …
is there some easier way to get the normal syntax of a json in JavaScript?

do stuff like this: json.array[0].name ... json.array.length ... json.object.subObject.list

2

You can convert your spin object into JS Json with JSON.parse(myVar.prop("mykey").elements().toString())

This will return a regular js array that you can work with with Js notations

3

Does that mean there’s no Spin API to get the array length?

4

Since Camunda Spin API strangely needs to use JavaScript’s JSON.parse to get array length, I found a good enough workaround that doesn’t require JavaScript:

chartMogulResponse.jsonPath('$.entries.length()').numberValue()

Not a “proper” I guess, but at least this way there’s no need to convert it to String then parse it to JavaScript object to get the array length.

I just needed this too and this method works for me.

5