ROUTES Exception Handling In Rails

config

# => Exceptions App
# => Sends to routes (notice how it does not persist the request)
# => config/application.rb
config.exceptions_app = self.routes

# => Routes
# => Sends to the appropriate view
# => config/rtoutes.rb
%w( 404 422 500 ).each do |code|
  get code, controller: :application, action: :show, code: code
end

controller

# => Controller
# => Invokes file for the error code
# => app/controllers/application_controller.rb
class ApplicationController < ApplicationController
  def error
    render status_code.to_s, status: (params[:code] || 500)
  end
end

# => View
# => Shows different error messages
# => app/views/application/404.html.erb
Put what you want here...