Challenge missing API reference to `as_json`; important since it's not discovered in the videos leading to it

In the "Returning JSON" challenge immediately after the Better JSON Messages, it's missing providing students references to how as_json

Unless you're familiar with Rails APIs concerning returning JSON in controllers, it's currently unnecessarily difficult for students completely unfamiliar with generating Rails API to pass this challenge without a reference to as_json API, particularly its parameters.

Unless Naomi Freeman differs, it seems the challenge is best appended to include documentation or provide a few examples for course takers completely unfamiliar with designing APIs using Rails to complete the challenge.

It'd also be a good opportunity for students to get used to the docs—Rails having one of the most newbie-friendly documentation on the internet.

class MonkeysController < ApplicationController
  before_filter :find_monkey

  def show
    render json: @monkey.as_json(include: :bananas)
  end

private
  def find_monkey
    @monkey = Monkey.find(params[:id])
  end
end

Edit: Treehouse's modal system seemingly didn't understand how to scrape my answer properly that's the definitive answer to the challenge based on a priori knowledge of Rails controllers and the challenge accepting it