tci_82865566.rb

answers_controller.rb

class Shared::AnswersController < ApplicationController
  before_filter :authenticate_student_or_teacher!

  def create
    @lesson = Lesson.where(id: params[:lesson_id]).first
    authorize! :read, @lesson
    @challenge = @lesson.challenge
    @challenge_result = current_student ? @challenge.result_for_student(current_student) : @challenge.result_for_staffer(current_staffer)
    @max_num_attempts = false

    challenge_answer(params[:question_id], params[:answer_id])

    respond_to do |format|
      format.js
      format.html
    end
  end

I added line 14's format.html in an attempt to remedy the UnknownFormat error seen in new relic, under the assumption is that it's unintentionally looking for the default html response. If this fixes it, the deeper issue, per this SO article implies we're likely calling for an html response other than js. If it doesn't fix it, it likely means we're calling for a different response (perhaps json). Either way, my question is... How best to track down where this is getting called? app/views/shared/answers/_attempt.js.erb is where I'm looking, but nothing stands out as an improper request.

Of the two places the @answer_path (defined as shared_program_lesson_challenge_answers_path(@program, @lesson)) are used, both use :remote => true.

Sounds like it could be an assets thing.

Checked the source code of view-source:http://demo.teachtci.com/shared/programs/156/lessons/1474/challenge, all the remote's properly show up within their tags as true.