Get users for a given group Activiti Rest API - json

Question

I'm looking for some advice on how to approach retrieving the users from a given group of the activti-app. Having read the documentation I've attempted to hit the endpoint associated with users and their groups by a posting a JSON body containing an array of user task filter ids.
Testing this in Postman returns a 500 internal server error "exception": "Request method 'POST' not supported". Obviously this is because I should be making a GET request however I cannot attach a JSON body in that case.
Aforementioned example endpoint: localhost:8080/activiti-app/api/enterprise/groups/{group_id}/users
Aforementioned docs:
https://docs.alfresco.com/activiti/docs/dev-guide/1.5.0/#_user_and_group_lists
Specifically this section Screencap of activti docs
Any suggestions would be greatly appreciated!
Thanks!

Answer 1

First, we have to make sure we are talking about "organization groups" not "capabilities groups". That was my original confusion. Once I create the right kind of group I could successfully use the REST API to fetch both a list of groups and a list of group members.
As the docs point out, to get a list of groups, do this:
curl -uadmin#app.activiti.com http://localhost:8080/activiti-app/api/enterprise/groups
Which returns:
{
"size":2,
"total":2,
"start":0,
"data":[
{"id":5,"name":"test-org-group-1","externalId":null,"status":"active","groups":null},
{"id":6,"name":"test-org-group-2","externalId":null,"status":"active","groups":null}
]
}
If you want to pass a filter, do it with "?filter=some-group-name".
Now, to see the members of a specific group, pass in the group ID, which is a numeric. So to see the members of test-org-group-1 I would use:
curl -uadmin#app.activiti.com http://localhost:8080/activiti-app/api/enterprise/groups/5/users
Which returns:
{
"size":2,
"total":2,
"start":0,
"data": [
{"id":2,"firstName":"Test","lastName":"User1","email":"tuser1#metaversant.com"},
{"id":3,"firstName":"Test","lastName":"User2","email":"tuser2#metaversant.com"}
]
}