Multi Domain

Background

• Multi Domain such as domain-one.dev and domain-two.dev both resolution to a project

Solution One

• Nginx rewrite

  rewrite ^/((?!coin|api).*)/ /coin/$1/ last;
  

Solution Two

• django-multidomain

  • Theory

    Django determines the root URLconf module to use. Ordinarily, this is the value of the ROOT_URLCONF setting, but if the incoming HttpRequest object has an attribute called urlconf (set by middleware request processing), its value will be used in place of the ROOT_URLCONF setting.
    

  • Source Code of Django

    • django/django/core/urlresolvers.py

  • Django Multi Domain

    import re
    from django.conf import settings
    
    class DomainMiddleware(object):
      def process_request(self, request):
          url_config = getattr(settings, 'URL_CONFIG', None)
          if url_config:
              try:
                  host = request.get_host()
                  for (regex, value) in url_config:
                      if re.search(regex, host):
                          request.urlconf = value
                          break
              except Exception, e:
                  print str(e)
                  pass
    

  • Installation

    pip install django-multidomain
    

  • Add multidomain to INSTALLED_APPS

    INSTALLED_APPS += ('multidomain', )
    

  • Add multidomain.middleware.DomainMiddleware to MIDDLEWARE_CLASSES

    MIDDLEWARE_CLASSES += ('multidomain.middleware.DomainMiddleware', )
    

  • Create App One and Two

    python manage.py startapp one
    python manage.py startapp two
    

  • Create a file for each domain you have (For example: domain-one.dev and domain-two.dev)

    • urls.py (by default)

      from django.conf.urls import patterns, include, url
      from django.contrib import admin
      
      urlpatterns = patterns('',
          url(r'^admin/', include(admin.site.urls)),
      )
      

    • urls_one.py

      from django.conf.urls import patterns, include, url
      
      urlpatterns = patterns('',
          url(r'^', include('one.urls', namespace='one')),
      )
      

    • urls_two.py

      from django.conf.urls import patterns, include, url
      
      urlpatterns = patterns('',
          url(r'^', include('two.urls', namespace='two')),
      )
      

  • Declare host/domain urlconfig tuple URL_CONFIG

    URL_CONFIG = (
        (r'^(.+\.)?domain-one\.dev', 'multidomaindemo.urls_one'),
        (r'^(.+\.)?domain-two\.dev', 'multidomaindemo.urls_two'),
    )
    ROOT_URLCONF = 'multidomaindemo.urls'
    

  • Local Test

    • localhost vs 127.0.0.1

      URL_CONFIG = (
          (r'^(.+\.)?localhost', 'multidomaindemo.urls_one'),
          (r'^(.+\.)?127\.0\.0\.1', 'multidomaindemo.urls_two'),
      )
      

Problems

• django-multidomain doesn't work when Nginx use proxy_pass

  # the upstream component nginx needs to connect to
  upstream kuaihongbao {
      server unix:///home/uwsgi/kuaihongbao.sock; # for a file socket
      # server 127.0.0.1:8888; # for a web port socket (we'll use this first)
  }
  
  location / {
      uwsgi_pass kuaihongbao;
      # proxy_pass  http://kuaihongbao;
      include     /home/uwsgi/uwsgi_params; # the uwsgi_params file you installed
  }
  

  • Reason: value of host = request.get_host() became 127.0.0.1:8888

References

[1] cyacarinic@Github, Django Multi Domain — Django application, implement multi domain concept. You can choose your url config according to your domain host.