With Convention over configuration, you can usually trust the defaults to get you there. In this case, not so much. I’ve been banging my head on the wall for a few hours now, in between trying things and researching.
For the usual cases, how do I set up an AJAX form. Is it using JS or JSON format?
Case 1: form_for remote: true default, format.js
UJS sends a request as JS. Exception: Missing template for update.js.
form_for remote: true, format: :json
No difference in HTML output, though form_for doc examples says you can do that.
Case 2: form_for remote: true, html: {"data-type" => :json} not the default
Responder will answer 204, but why is this not default in either form_for or UJS?
What is the expected use case and can it be documented? I suspect it’s the latter, but I expected there to be good defaults in place.
