Starting Process with JSON payload

Camunda 7 Topics Discussion & Questions
1

Hi,
I have a workflow end-point like

URL/process-definition/key:id/submit-form

I have a JSON payload like this

{
	"variables": {
		"amount": {
			"value":555,
			"type":"long"
		},
		"item": {
			"value": "item-xyz"
		}
	},
	 "businessKey" : "myBusinessKey",
	 "withVariablesInReturn": true
}

The intention is to submit the form with the JSON payload and read the JSON during the start of the workflow.
But when I hit this with the Rest API client I am not receiving the variable payload which I have sent with the request.
Here’s the sample workflow where I should able to process the JSON in Payload receiver task.

image
image530×662 6.05 KB

It will be helpful if you provide the Javascript API to receive and parse the JSON response.

2

Submit form is used when using the generated form fields. (The form tab config on the start event).

Are you using the generated form fields?

3

@StephenOTT Thanks for your quick reply.
I am not using the forms in the current workflow. I am trying to expose a rest endpoint of my workflow so that when the user hit the workflow URL(POST request) with JSON payload,

  1. The workflow should receive with the user request JSON - Pending
  2. The workflow should process the requested JSON data and should send the response back to the user rest endpoint -Done using HTTP connector.

Let me know in case more explainations are needed.

4

You need to use the generated forms if you want to use the submit form endpoint. Otherwise you should look at the StartInstance endpoint. You should also build a custom API rather than expose the Camunda API directly to the user, as there are lots of ways extra data can be injected into your Process instance.

1 Like
5

@StephenOTT Thanks. Let me follow the same.

6