Custom error pages

error_pages.rb

# 
# Usage:
# class ApplicationController < ActionController::Base
#   include ErrorPages
# end
# 
require 'active_support/core_ext/array/extract_options'
module ErrorPages
  
  extend ActiveSupport::Concern
  
  included do
    unless Magistrix::Application.config.consider_all_requests_local
      rescue_from ActionController::RoutingError, with: :render_404
      rescue_from ActionController::UnknownController, with: :render_404
      rescue_from ActionController::UnknownHttpMethod, with: :render_404
      rescue_from AbstractController::ActionNotFound, with: :render_404
      rescue_from ActiveRecord::RecordNotFound, with: :render_404
    end
  end
  
  private
  
  def render_404(exception, *args)
    # send exception to newrelic
    options = args.extract_options!
    newrelic_notice_error(exception, options) if respond_to?(:newrelic_notice_error)
    
    @not_found_path = exception.message
    respond_to do |format|
      format.html { render template: 'errors/not_found', layout: 'layouts/application', status: 404 }
      format.all { render nothing: true, status: 404 }
    end
  end
  
end