defining sub-domain based on a function in routes.py of Web2Py

ghz 昨天 ⋅ 1 views

I have this page:

http://mysite.org/myapp/pages/blog?name=user9

and I need to have this:

user9.mysite.org

What should i write in my routes.py?

Answer

To rewrite your URL http://mysite.org/myapp/pages/blog?name=user9 to user9.mysite.org in your routes.py, you will need to configure your web application to handle the request with a subdomain routing system.

Assuming you are using Django (or another Python web framework with similar routing capabilities), here's how you can approach it:

Steps:

  1. Subdomain handling: In Django, you can use a custom middleware to handle subdomains. You will need to capture the subdomain part of the URL (user9.mysite.org), extract the username, and then route the request accordingly.

  2. Update urls.py to support subdomains: You can modify your urls.py file to capture the subdomain and pass it as part of the view handling.

  3. Custom Middleware: You will need middleware that can inspect the incoming request and extract the subdomain.

  4. Configure ALLOWED_HOSTS: Make sure that ALLOWED_HOSTS in your Django settings allows subdomains for the site, i.e., it should include the pattern *.mysite.org.

Example of implementation:

1. Create a custom middleware to capture subdomains (optional step if not using a subdomain routing package):

from django.http import HttpResponseBadRequest
import re

class SubdomainMiddleware:
    def __init__(self, get_response):
        self.get_response = get_response

    def __call__(self, request):
        subdomain = self.get_subdomain(request)
        if subdomain:
            # Store the subdomain in request for later use in views
            request.subdomain = subdomain
        else:
            request.subdomain = None
        response = self.get_response(request)
        return response

    def get_subdomain(self, request):
        """
        Returns the subdomain part of the domain if available.
        E.g., from 'user9.mysite.org' it will return 'user9'.
        """
        host = request.get_host()
        match = re.match(r"^(?P<subdomain>[^.]+)\.mysite\.org$", host)
        if match:
            return match.group('subdomain')
        return None

In your settings.py, add this middleware:

MIDDLEWARE = [
    # Other middleware...
    'myapp.middleware.SubdomainMiddleware',
]

2. Define the URL pattern in urls.py for the subdomain routing:

Now that you can access the subdomain via request.subdomain, you can route it to a view that handles user-specific pages. Update your urls.py to route based on the subdomain.

For example:

from django.urls import path
from . import views

urlpatterns = [
    path('blog/', views.blog_page, name='blog'),
]

3. Update your views.py to handle requests based on the subdomain:

from django.shortcuts import render
from django.http import Http404

def blog_page(request):
    subdomain = request.subdomain
    if subdomain:
        # Extract the user based on subdomain
        user = subdomain  # The subdomain is the username
        # Fetch the user's blog page (this is just a placeholder example)
        context = {'user': user}
        return render(request, 'blog_page.html', context)
    else:
        raise Http404("User not found")

4. Modify ALLOWED_HOSTS in settings.py to allow subdomains:

In your settings.py, update the ALLOWED_HOSTS setting to support any subdomains of mysite.org.

ALLOWED_HOSTS = ['.mysite.org']

This allows requests from any subdomain like user9.mysite.org, user10.mysite.org, etc.

5. Configure DNS (Important for subdomains to work):

You will need to configure your DNS server to handle wildcard subdomains (*.mysite.org). This will ensure that any subdomain (like user9.mysite.org) points to your server.

For example, create a wildcard CNAME or A record for *.mysite.org pointing to your server's IP address.

Summary:

  • Custom Middleware: Capture the subdomain (e.g., user9 from user9.mysite.org).
  • URL Configuration: Use the subdomain in your views to fetch the correct content for the user.
  • DNS Configuration: Ensure that your DNS allows for wildcard subdomains.

After following these steps, you should be able to access user9.mysite.org and have it route correctly to the user-specific blog content.

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