How can I show 404 error page instead of routing error?

Question

In my Ruby on Rails application I want to show 404 error page instead of routing error when the given route does not matches or exists in my application. Can anybody help me to make it possible?

Answer 1

If you cannot easily run production mode locally, set the consider_all_requests_local to false in your config/environments/development.rb file.

Answer 2

This return 404 page

In ApplicationController

class ApplicationController < ActionController::Base

      rescue_from ActiveRecord::RecordNotFound,    with: :route_not_found
      rescue_from ActionController::RoutingError,  with: :route_not_found
      rescue_from ActionController::UnknownFormat, with: :route_not_found


    def route_not_found
        render file: Rails.public_path.join('404.html'), status: :not_found, layout: false
      end