How pass additional parameters to index action in Rest proxy?
I'd like to add a static param to be sent when fetching records using Rest proxy. I tried adding it to "extraParams" in proxy config, but then they are sent on *every* request, while I want them to be sent only on index action.
Also, I'm currently dynamically adding authentication token to every request in "beforeload" and "beforesync" listeners (it sucks that extraParams can't be a function that returns an object).
What's the best way to add custom params just to "index" requests?