Set up subdomains for tenants in a Django web app?

Question

I have installed django-tenant-schemas for a multitenancy SaaS app I'm trying to build. So far I have managed to create schemas in postgres so each tenant has isolated tables.

If a user goes to my website, eg www.mydomain.com, and registers by providing a username, password and company (eg "Joeys Company") - how would I dynamically create a new subdomain for that user, in this case joeyscompany.mydomain.com?

People have mentioned wildcard domains, but not sure how to practically set that up

Answer 1

Your question can be broken down into two smaller sub-questions.

1. How do you specify the domain name for a tenant?

As described in the docs , when you create a tenant you use the domain_url parameter to associate a domain name with a tenant. So if you make a tenant with domain_url='tenant.mysite.com' , and a request comes to your server with the hostname tenant.mysite.com , django-tenant-schemas will automatically use the correct database schema for this tenant. This brings us to question two:

2. How do you use DNS to point that subdomain to your application?

You are correct that the easiest way would be to set up a wildcard subdomain. Without going too deep into a DNS lesson, you would have a DNS entry like *.mysite.com , where * means "anything". This wildcard subdomain would be pointed to the IP address of the server where your application is running. As a result, anything.mysite.com will resolve to your server.

The process of setting up a wildcard subdomain will be different depending on your DNS provider. You should consult their documentation for specifics.

Answer 2

I actually figured it out. For anyone interested, here's the code that automatically creates a tenant upon user registration.

class SignupView(View):
    def get(self, request):
        form = RegistrationForm()
        return render(request, "accounts/signup.html", {"form": form})

    def post(self, request, *args, **kwargs):
        form = RegistrationForm(request.POST)
        if form.is_valid():
            instance = form.save(commit=False)
            tenant = Client(domain_url=company + ".my-domain.com", schema_name=company, name=company)
            tenant.save()

            with schema_context(tenant.schema_name):
                instance.save()
                redirect = 'http://' + company + '.my-domain.com:8000/accounts/login'
                return HttpResponseRedirect(redirect)
        return render(request, "accounts/signup.html", {"form": form})