Ruby on Rails www subdomain redirect

Question

Here is my Ruby on Rails code to redirect a request from https://example.com to https://www.example.com:

class ApplicationController < ActionController::Base
before_filter :add_www_subdomain

private

    def add_www_subdomain
      if Rails.env.production?
        unless /^www/.match(request.host)
          redirect_to("#{request.protocol}www.#{request.host_with_port}",status: 301)
        end
      end
    end
end

Now the issue is, when someone lands at https://example.com/product/abc they are being redirected to https://www.example.com supposedly, they should go to https://www.example.com/product/abc. Is there any trick for this? Thanks

score 2 · Accepted Answer · edited May 23 '17 at 12:07

redirect_to("#{request.protocol}www.#{request.host_with_port}#{request.fullpath}",status: 301)

I think this kind of redirect is more suited to the web server. These are the rules:

Apache

<VirtualHost *:80>
  ServerName example.com
  Redirect permanent / http://www.example.com/
</VirtualHost>

source

NGINX

server {
    listen 80;
    server_name www.domain.com;
    # $scheme will get the http protocol
    # and 301 is best practice for tablet, phone, desktop and seo
    return 301 $scheme://domain.com$request_uri;

}

server {
    listen 80;
    server_name domain.com;
    # here goes the rest of your config file
    # example 
    location / {

        rewrite ^/cp/login?$ /cp/login.php last;
        # etc etc...

    }
}

source

Ruby on Rails www subdomain redirect

1 Answers1