flash.py

import os
import sys

from django.conf import settings
from django.contrib import messages
from django.http import HttpResponse, HttpResponseNotAllowed
from django.shortcuts import redirect
from django.urls import path
from django.template import Template, RequestContext
from django.views.decorators.http import require_GET

BASE_DIR = os.path.dirname(os.path.abspath(__file__))
settings.configure(
    DEBUG=True,
    INSTALLED_APPS=[
        "django.contrib.admin",
        "django.contrib.auth",
        "django.contrib.contenttypes",
        "django.contrib.sessions",
        "django.contrib.messages",
    ],
    SECRET_KEY="notsosecretkey",
    ROOT_URLCONF=__name__,
    ALLOWED_HOSTS=["example.com", "127.0.0.1"],
    MIDDLEWARE=[
        "django.contrib.sessions.middleware.SessionMiddleware",
        "django.middleware.common.CommonMiddleware",
        "django.contrib.messages.middleware.MessageMiddleware",
    ],
    TEMPLATES=[
        {
            "BACKEND": "django.template.backends.django.DjangoTemplates",
            "DIRS": [],
            "APP_DIRS": True,
            "OPTIONS": {
                "context_processors": [
                    "django.template.context_processors.debug",
                    "django.template.context_processors.request",
                    "django.contrib.auth.context_processors.auth",
                    "django.contrib.messages.context_processors.messages",
                ]
            },
        }
    ],
    DATABASES={
        "default": {
            "ENGINE": "django.db.backends.sqlite3",
            "NAME": os.path.join(BASE_DIR, "dbtest.sqlite3"),
            "TEST": {"NAME": "testdatabase"},
        }
    },
    SESSION_ENGINE="django.contrib.sessions.backends.cache",
    SESSION_COOKIE_DOMAIN="example.com",
    SESSION_COOKIE_SECURE=False,
    MESSAGE_LEVEL=messages.constants.DEBUG,
    MESSAGE_STORAGE="django.contrib.messages.storage.session.SessionStorage",
)

template = """
      <div>
      <h1>Test</h1>
      {% if messages %}
        <ul class="messages">
          {% for message in messages %}
            <li class="{{ message.tags }}">{{ message }}</li>
          {% endfor %}
        </ul>
      {% endif %}
      </div>
  """


@require_GET
def index(request):
    name = request.GET.get("q", "world!")
    messages.success(request, f"Your name is {name}")
    return redirect("route2")


@require_GET
def two(request):
    context = RequestContext(request)
    html = Template(template).render(context)
    return HttpResponse(html)


urlpatterns = [path("1", index), path("2", two, name="route2")]

if __name__ == "__main__":
    from django.core.management import execute_from_command_line

    execute_from_command_line(sys.argv)