respond_to.rb

class ErrorsController < ApplicationController
  def index
    @errors = Error.all
  end

  def show
    @error = Error.find(params[:id])
    respond_to do |format|
      format.js { #render partial}
      format.html {#render action?}
    end
  end
end

# Jquery get ajax with replacing html (it's down the page a bit) http://api.jquery.com/jquery.get/
# Working with javascript in rails: http://edgeguides.rubyonrails.org/working_with_javascript_in_rails.html
# Partials and Ajax: https://coderwall.com/p/kqb3xq/rails-4-how-to-partials-ajax-dead-easy