DS.RESTAdapter#findMany()

Called by the store in order to fetch several records together if coalesceFindRequests is true

For example, if the original payload looks like:

The IDs will be passed as a URL-encoded Array of IDs, in this form:

Many servers, such as Rails and PHP, will automatically convert this URL-encoded array into an Array for you on the server-side. If you want to encode the IDs, differently, just override this (one-line) method.

The findMany method makes an Ajax (HTTP GET) request to a URL computed by buildURL, and returns a promise for the resulting payload.