RestResource GET with multiple parameters

Question

In Apex RestResource What is the correct format for urlMapping when you want to pass in multiple parameters in a GET request? So I need to pass in accountId and serviceId as filters to GET.

@RestResource(urlMapping='/Revenues/accountId={acctId}&serviceId={svcId}');

OR

@RestResource(urlMapping='/Revenues/accountId/*/serviceId/*');

I am confused. I tried to use the first one and then get the parameterss using request.params.get('accountId'); but just get NULL.

Answer 1

HTTP GET defines data as a series of query parameters in the URI itself. For example, here’s a URI:

https://na8.salesforce.com/services/apexrest/FieldCase?companyName=GenePoint

So your code will be like

@RestResource(urlMapping='/Revenues/*)
@HttpGet
  global static List<Case> getOpenCases() {
    String accountId = RestContext.request.params.get('accountId');
    String accountId = RestContext.request.params.get('serviceId');

Creating REST APIs using Apex REST

Or you can parse the URl as well

@HttpGet
    global static Account doGet() {
        RestRequest req = RestContext.request;
        RestResponse res = RestContext.response;
        String accountId = req.requestURI.substring(req.requestURI.lastIndexOf('/')+1);

Apex REST Basic Code Sample

Answer 2

Honestly, and it's Salesforce's fault, I think the answers to your question are going to suck.

You SHOULD be able to do this:

@RestResource(urlMapping='/Revenues/account/{accountId}/service/{serviceId}');

... but the Apex annotation doesn't let you. It'd be neat though, right?

The "accepted" answer is as close as you're gonna get. For the parse-based method, perhaps a Regex-based mechanism (helper method) could more easily pull out those IDs from a well-formed URI? I.e. given a Dictionary with keys and empty values, and a URI, pull out the values?

It may seem overly-complicated, but if you start writing lots of APIs, the copy-pasting of the same Substring/LastIndexOf code over and over it going to feel tedious.