Djangoで動的サブドメインの実装方法|サンプルコードを紹介

# サンプル
127.0.0.1 www.example.com
127.0.0.1 test.example.com
127.0.0.1 ex.example.com

brew install dnsmasq

address=/.example.com/::1
address=/.example.com/127.0.0.1

vim /etc/resolver/example.com

ーーーーー　内容　ーーーーー
nameserver ::1
nameserver 127.0.0.1

pip install django-hosts

ALLOWED_HOSTS = ['.example.com']

〜〜〜

INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'django_hosts',    # ←追加する　
]

〜〜〜

MIDDLEWARE = [
    'django_hosts.middleware.HostsRequestMiddleware',    # ←一番上に追加する
    'django.middleware.security.SecurityMiddleware',
    'django.contrib.sessions.middleware.SessionMiddleware',
    'django.middleware.common.CommonMiddleware',
    'django.middleware.csrf.CsrfViewMiddleware',
    'django.contrib.auth.middleware.AuthenticationMiddleware',
    'django.contrib.messages.middleware.MessageMiddleware',
    'django.middleware.clickjacking.XFrameOptionsMiddleware',
    'django_hosts.middleware.HostsResponseMiddleware',    # ←一番下に追加する
]

〜〜〜

ROOT_URLCONF = 'domain_project.urls'
PARENT_HOST = 'example.com:8000' # ←追加(本来はポートなしで設定する)
ROOT_HOSTCONF = 'domain_project.hosts' # ←追加(hosts設定は後ほど):プロジェクト名は変更してください
DEFAULT_HOST = 'www' # ←追加(デフォルトとなるサブドメイン)

from django.conf import settings
from django_hosts import patterns, host

host_patterns = patterns(
    '',
    host(r'www', settings.ROOT_URLCONF, name='www'),
    host(r'([0-9a-zA-Z\-\_]+)', 'contents.domain_urls', name='domain_contents'),
)

from django.urls import path

from . import views

app_name = 'contents'

urlpatterns = [
    path('', views.ContentList.as_view(), name='content_list'),
]

from django.urls import path

from . import views

app_name = 'domain_contents'

urlpatterns = [
    path('', views.ContentDetail.as_view(), name='content_detail'),
]

from django.shortcuts import render
from django.views import generic

from .models import Content
from .utilities import get_content_by_domain
 
 
class ContentList(generic.ListView):
    model = Content


class ContentDetail(generic.TemplateView):
    model = Content
    template_name = 'contents/detail.html'

    def get_context_data(self, **kwargs):
        context = super().get_context_data(**kwargs)

        context['content'] = get_content_by_domain(self.request)


        return context

from django.shortcuts import get_object_or_404

from .models import Content

# ドメイン取得
def get_hostname(request):
    return request.get_host().split(':')[0].lower()

# サブドメイン取得
def get_subdomain(request):
    hostname = get_hostname(request) 
    return hostname.split('.')[0]

# サブドメインからコンテンツ取得
def get_content_by_domain(request):
    domain = get_subdomain(request)
    content = get_object_or_404(Content, domain=domain)
    return content 

{% extends "contents/base.html" %}
{% load hosts %}
{% block content %}
<div>
    <div>
        <p>タイトル</p>
    </div>

    {% for content in object_list %}
    <div>
        <p>**************</p>
        <p>コンテンツ名：{{ content.name }}</p>
        <p>設定したドメイン：{{ content.domain }}</p>
        <p>
            <a href="{% host_url 'content_detail' host 'domain_contents' content.domain %}">詳細ページ</a>
        </p>
        <br>
        <br>
    </div>
    {% endfor %}
</div>
{% endblock %}
 

{% host_url 'content_detail' content.id host 'domain_contents' content.domain %}