Rails 4 - MissingTemplate/Missing Partial Error, Only in Production - ruby-on-rails

Question

We just secured our application with an SSL certificate. Moving to HTTPS is proved more complex than we thought and we're currently sorting through a few of the resulting bugs.
We have an AJAX call in CoffeeScript, where rails responds by rendering the html of a partial. This is working perfectly in development.
CoffeeScript:
coffee_method: (pos, uid) =>
$.ajax '/contoller/test/',
type: 'POST'
data:
pos: pos
uid: uid
success: (data) ->
$('#result-div').html(data) #Populates side menu with _next_destination_menu content
error: ->
alert 'How embarassing! Something went wrong - please try your search again. '
Controller:
def test
... #do some stuff
puts "format requested: #{request.format}"
puts "format url_encodeded: #{request.format.url_encoded_form?}"
render partial: 'trips/_test' #app/views/trips/_test.html.erb
end
However, in production, we get the following error:
ActionView::MissingTemplate (Missing partial trips/_test with {:locale=>[:en], :formats=>[:url_encoded_form], :variants=>[], :handlers=>[:erb, :builder, :raw, :ruby, :coffee, :jbuilder]}.
After some digging, I figured out the request in production was a different format. Using those puts lines in the controller to debug, here are the results:
Production:
format requested: application/x-www-form-urlencoded
format url_encodeded: true
Development:
format requested: */*
format url_encodeded: false
What is the best way to handle this issue. Do I:
Change the content type of every AJAX call in the CoffeeScript?
Add a respond_to...format.url_encoded_form {render partial: trips/test} to the controller?
The latter seems like I would be duplicating code, because I want to render the same partial, regardless of the format the request comes in. I tried format.all {...} but encountered the same issue. Any best practices are appreciated!
Update:
Specifying the response type directly gives me the same missing template error:
respond_to do |format|
format.html {render partial: 'trips/test'}
format.json {render partial: 'trips/test' }
format.url_encoded_form {render partial: 'trips/test'}
end
Update 2:
The Request headers for both localhost and production are the same, the content type is application/x-www-form-urlencoded, even though format.url_encoded_form? returns false.
Accept:*/*
Accept-Encoding:gzip, deflate, br
Accept-Language:en-US,en;q=0.8,zh-CN;q=0.6,zh;q=0.4
Connection:keep-alive
Content-Length:37
Content-Type:application/x-www-form-urlencoded; charset=UTF-8

Answer 1

You could try passing in the format, locale, and handlers exactly as requested:
render(
   partial: 'trips/test',
     formats: [:html, :js, :json, :url_encoded_form],
     locale: [:en],
     handlers: [:erb, :builder, :raw, :ruby, :coffee, :jbuilder])