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Minimal configuration static site generator for Django
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README.md

django-distill

django-distill is a minimal configuration static site generator and publisher for Django. Most Django versions are supported, however up to date versions are advised including the 3.x releases. django-distill as of the 1.7 release only supports Python 3. Python 2 support has been dropped. If you require Python 2 support please pin django-distill to version 1.6 in your requirements.txt or Pipfile.

django-distill extends existing Django sites with the ability to export fully functional static sites. It is suitable for sites such as blogs that have a mostly static front end but you still want to use a CMS to manage the content.

It plugs directly into the existing Django framework without the need to write custom renderers or other more verbose code. You can also use existing fully dynamic sites and just generate static pages for a small subsection of pages rather than the entire site.

For static files on CDNs you can use the following 'cache buster' library to allow for fast static media updates when pushing changes:

https://github.com/meeb/django-cachekiller

There is a complete example site that creates a static blog and uses django-distill with django-cachekiller via continuous deployment on Netlify available here:

https://github.com/meeb/django-distill-example

Installation

Install from pip:

$ pip install django-distill

Add django_distill to your INSTALLED_APPS in your settings.py:

INSTALLED_APPS = [
    # ... other apps here ...
    'django_distill',
]

That's it.

Limitations

django-distill generates static pages and therefore only views which allow GET requests that return an HTTP 200 status code are supported.

It is assumed you are using URI parameters such as /blog/123-abc and not querystring parameters such as /blog?post_id=123&title=abc. Querystring parameters do not make sense for static page generation for obvious reasons.

Additionally With one-off static pages dynamic internationalisation won't work so all files are generated using the LANGUAGE_CODE value in your settings.py.

Static media files such as images and style sheets are copied from your static media directory defined in STATIC_ROOT. This means that you will want to run ./manage.py collectstatic before you run ./manage.py distill-local if you have made changes to static media. django-distill doesn't chain this request by design, however you can enable it with the --collectstatic argument.

Usage

Assuming you have an existing Django project, edit a urls.py to include the distill_path function which replaces Django's standard path function and supports the new keyword arguments distill_func and distill_file. The distill_func argument should be provided with a function or callable class that returns an iterable or None. The distill_file argument is entirely optional and allows you to override the URL that would otherwise be generated from the reverse of the URL regex. This allows you to rename URLs like /example to any other name like example.html. As of v0.8 any URIs ending in a slash / are automatically modified to end in /index.html. An example distill setup for a theoretical blogging app would be:

# Replaces the standard django.conf.path, identical syntax
from django_distill import distill_path

# Views and models from a theoretical blogging app
from blog.views import PostIndex, PostView, PostYear
from blog.models import Post

def get_index():
    # The index URI path, '', contains no parameters, named or otherwise.
    # You can simply just return nothing here.
    return None

def get_all_blogposts():
    # This function needs to return an iterable of dictionaries. Dictionaries
    # are required as the URL this distill function is for has named parameters.
    # You can just export a small subset of values here if you wish to
    # limit what pages will be generated.
    for post in Post.objects.all():
        yield {'blog_id': post_id, 'blog_title': post.title}

def get_years():
    # You can also just return an iterable containing static strings if the
    # URL only has one argument and you are using positional URL parameters:
    return (2014, 2015)
    # This is really just shorthand for ((2014,), (2015,))

urlpatterns = (
    # e.g. / the blog index
    distill_path('',
                 PostIndex.as_view(),
                 name='blog-index',
                 distill_func=get_index,
                 # / is not a valid file name! override it to index.html
                 distill_file='index.html'),
    # e.g. /post/123-some-post-title using named parameters
    distill_path('post/<int:blog_id>-<slug:blog_title>',
                 PostView.as_view(),
                 name='blog-post',
                 distill_func=get_all_blogposts),
    # e.g. /posts-by-year/2015 using positional parameters
    distill_path('posts-by-year/<int:year>',
                 PostYear.as_view(),
                 name='blog-year',
                 distill_func=get_years),
)

Your site will still function identically with the above changes. Internally the distill_func and distill_file parameters are removed and the URL is passed back to Django for normal processing. This has no runtime performance impact as this happens only once upon starting the application.

You can use the distill_re_path function as well, which replaces the default django.urls.re_path function. Its usage is identical to the above:

from django_distill import distill_re_path

urlpatterns = (
    distill_re_path(r'some/regex'
                    SomeOtherView.as_view(),
                    name='url-other-view',
                    distill_func=some_other_func),
)

If you are using an older version of Django in the 1.x series you can use the distill_url function instead which replaces the django.conf.urls.url or django.urls.url functions. Its usage is identical to the above:

from django_distill import distill_url

urlpatterns = (
    distill_url(r'some/regex'
                SomeView.as_view(),
                name='url-view',
                distill_func=some_func),
)

Note django-distill will mirror whatever your installed version of Django supports, therefore at some point the distill_url function will cease working in the future when Django 2.x itself depreciates the django.conf.urls.url and django.urls.url functions. You can use distill_re_path as a drop-in replacement. It is advisable to use distill_path or distill_re_path if you're building a new site now.

The distill-local command

Once you have wrapped the URLs you want to generate statically you can now generate a complete functioning static site with:

$ ./manage.py distill-local [optional /path/to/export/directory]

Under the hood this simply iterates all URLs registered with distill_url and generates the pages for them using parts of the Django testing framework to spoof requests. Once the site pages have been rendered then files from the STATIC_ROOT are copied over. Existing files with the same name are replaced in the target directory and orphan files are deleted.

distill-local supports the following optional arguments:

--collectstatic: Automatically run collectstatic on your site before rendering, this is just a shortcut to save you typing an extra command.

--quiet: Disable all output other than asking confirmation questions.

--force: Assume 'yes' to all confirmation questions.

Note If any of your views contain a Python error then rendering will fail then the stack trace will be printed to the terminal and the rendering command will exit with a status code of 1.

The distill-publish command

$ ./manage.py distill-publish [optional destination here]

If you have configured at least once publishing destination (see below) you can use the distill-publish command to publish the site to a remote location.

This will perform a full synchronisation, removing any remote files that are no longer present in the generated static site and uploading any new or changed files. The site will be built into a temporary directory locally first when publishing which is deleted once the site has been published. Each file will be checked that it has been published correctly by requesting it via the PUBLIC_URL.

distill-publish supports the following optional arguments:

--collectstatic: Automatically run collectstatic on your site before rendering, this is just a shortcut to save you typing an extra command.

--quiet: Disable all output other than asking confirmation questions.

--force: Assume 'yes' to all confirmation questions.

Note that this means if you use --force and --quiet that the output directory will have all files not part of the site export deleted without any confirmation.

Note If any of your views contain a Python error then rendering will fail then the stack trace will be printed to the terminal and the rendering command will exit with a status code of 1.

The distill-test-publish command

$ ./manage.py distill-test-publish [optional destination here]

This will connect to your publishing target, authenticate to it, upload a randomly named file, verify it exists on the PUBLIC_URL and then delete it again. Use this to check your publishing settings are correct.

distill-test-publish has no arguments.

Optional configuration settings

You can set the following optional settings.py variables:

DISTILL_DIR: string, default directory to export to:

DISTILL_DIR = '/path/to/export/directory'

DISTILL_PUBLISH: dictionary, like Django's settings.DATABASES, supports default:

DISTILL_PUBLISH = {
    'default': {
        ... options ...
    },
    'some-other-target': {
        ... options ...
    },
}

Publishing targets

You can automatically publish sites to various supported remote targets through backends just like how you can use MySQL, SQLite, PostgreSQL etc. with Django by changing the backend database engine. Currently the engines supported by django-distill are:

django_distill.backends.rackspace_files: Publish to a Rackspace Cloud Files container. Requires the Python library pyrax ($ pip install pyrax). The container must already exist (use the Rackspace Cloud control panel). Options:

'some-rackspace-container': {
    'ENGINE': 'django_distill.backends.rackspace_files',
    'PUBLIC_URL': 'http://.../',
    'USERNAME': '...',
    'API_KEY': '...',
    'REGION': '...',
    'CONTAINER': '...',
},

django_distill.backends.amazon_s3: Publish to an Amazon S3 bucket. Requires the Python library boto ($ pip install boto). The bucket must already exist (use the AWS control panel). Options:

'some-s3-container': {
    'ENGINE': 'django_distill.backends.amazon_s3',
    'PUBLIC_URL': 'http://.../',
    'ACCESS_KEY_ID': '...',
    'SECRET_ACCESS_KEY': '...',
    'BUCKET': '...',
},

django_distill.backends.google_storage: Publish to a Google Cloud Storage bucket. Requires the Python libraries google-api-python-client and google-cloud-storage ($ pip install google-api-python-client google-cloud-storage). The bucket must already exist and be set up to host a public static website (use the Google Cloud control panel). Options:

'some-google-storage-bucket': {
    'ENGINE': 'django_distill.backends.google_storage',
    'PUBLIC_URL': 'https://storage.googleapis.com/[bucket.name.here]/',
    'JSON_CREDENTIALS': '/path/to/some/credentials.json',
    'BUCKET': '[bucket.name.here]',
},

Tests

There is a minimal test suite, you can run it by cloing this repository, installing the required dependancies in requirements.txt then execuiting:

# ./run-tests.py

Contributing

All properly formatted and sensible pull requests, issues and comments are welcome.

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