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FROZEN DJANGO

Export webpages created by your Django views into html files.

It is dumb, it won't deploy the files to AWS for instance, and won't collect assets from static files or media files.

The assumption is that the build process will be triggered by Django signals, for example when a BlogPost was created, and will only rebuild the related html (or json) files.

Inspired by:

Requirements

  • add frozen_django to your INSTALLED_APPS
  • will only process urls with file extensions (.html, .json, .js, .xml, etc.)
  • Django Views with pagination must have Link HTTP header or html tag <link rel="next" /> in their content

Settings

  • FROZEN_ROOT (should be filled, can be dict for multisite, keys are items in ALLOWED_HOSTS)
  • FROZEN_MIDDLEWARE (optional)

API

  • Django Command freeze_view
  • frozen_django.tasks_celery.freeze_view
  • frozen_django.tasks_uwsgi.freeze_view

Examples

Here is an example of all pages rebuild:

File blog/settings.py

from django.utils.translation import gettext_lazy as _

ALLOWED_HOSTS = ['www.blog.id', 'www.planet.id']

INSTALLED_APPS = [
    'frozen_django',
]

MIDDLEWARE = [
    'django.middleware.locale.LocaleMiddleware',
    'django.contrib.sites.middleware.CurrentSiteMiddleware',
]

FROZEN_MIDDLEWARE = [
    'django.middleware.locale.LocaleMiddleware',
    'django.contrib.sites.middleware.CurrentSiteMiddleware',
]

USE_I18N = True
LANGUAGE_CODE = 'en'

LANGUAGES = (
    ('en', _("English")),
    ('id', _("Bahasa Indonesia")),
)

FROZEN_ROOT = {
    'www.blog.id': ROOT_DIR/'public'/'blog',
    'www.planet.id': ROOT_DIR/'public'/'planet',
}

File blog/urls.py:

from django.conf.urls.i18n import i18n_patterns
from django.utils.translation import gettext_lazy as _
from website import views

urlpatterns = i18n_patterns(
    path(_('posts/'), include('blog_post.urls', namespace='blogpost')),
    path('index.<str:format>', views.Home.as_view(), name='home'),
    path('index/pages/<int:page>.<str:format>', views.Home.as_view(),
        name='homepages'),
    prefix_default_language=True,
)

File blog_post/urls.py:

from . import views

app_name = 'blog_post'

urlpatterns = [
    path('<str:slug>.<str:format>', views.Display.as_view(), name='display'),
]

File blog_post/signals.py

from website.tasks import hosts_freeze_view

def post_updated(sender, instance, **kwargs):
    hosts_freeze_view('website.views.Home', format='html')
    hosts_freeze_view('blog_post.views.Display', slug=instance.slug,
            format='html')

File blog_post/apps.py

from django.db.models.signals import post_save

class BlogPostConfig(AppConfig):
    name = 'blog_post'

    def ready(self):
        from . import models
        from .signals import post_updated

        post_save.connect(post_updated, sender=models.BlogPost)

File website/views.py

from django.views.generic import ListView
#-
from blog_post.models import Post

class Home(ListView):
    template_name = 'website/home.html'
    paginate_by = 2

    def get_queryset(self):
        return Post.objects.all()

File website/tasks.py

from django.conf import settings
from frozen_django.main import generate_static_view
from uwsgi_tasks import task, TaskExecutor

@task(executor=TaskExecutor.SPOOLER)
def freeze_view(view_name, base_url, **kwargs):
    generate_static_view(view_name, frozen_host=base_url, **kwargs)


def hosts_freeze_view(view_name, **kwargs):
    for host in settings.ALLOWED_HOSTS:
        freeze_view(view_name, base_url=host, **kwargs)

File website/templates/website/home.html

<html>
  <head>
    {% if page_obj.has_next %}
      <link rel="next" href="{% url 'homepages' page=page_obj.next_page_number format='html' %}">
    {% endif %}
  </head>
</html>

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Incrementally create static sites from Django, meant to be used in background tasks.

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