Response fails to render (client-side) if view files don't contain `.html` in the name about turbo-rails

[dvisockas]

@cmartyn, after a weekend of digging found a rather hacky fix: remove 'turbo-stream;' from Content-Type headers:

if response.headers['Content-Type'].include? 'text/html'
  response.headers['Content-Type'].remove!('turbo-stream;')
end

[dhh]

That's a good catch. It's caused by the need to switch rendering formats when streams are rendered, see

turbo-rails/app/channels/turbo/streams/broadcasts.rb

Line 26 in 6ba6e00

rendering.delete(:content) || (rendering.any? ? render_format(:html, **rendering) : nil)

. Can only force that switch if the mime type is present in the template.

Not sure the best way to catch/alert about this. Maybe there's a way to catch the exception in

turbo-rails/app/channels/turbo/streams/broadcasts.rb

Lines 63 to 65 in 6ba6e00

	def render_format(format, **rendering)
	ApplicationController.render(formats: [ format ], **rendering)
	end

and rethrow with better error messaging? Please do investigate!