Passing array in GET for a REST call

Question

I have a url to fetch appointments for a user like this:

/user/:userId/appointments

How should the url look like if I want to get appointme

Answer 1

Collections are a resource so /appointments is fine as the resource.

Collections also typically offer filters via the querystring which is essentially what users=id1,id2... is.

So,

/appointments?users=id1,id2 

is fine as a filtered RESTful resource.