Django and Heroku Cookbook
Collection of snippets and scripts that solve certain problems when deploying Django apps to Heroku.
Scripts in the
bin directory are post-compile hooks that are invoked by
step. You can install them by copying the
bin directory into the root
directory of your Heroku application repository.
Installing NodeJS and Less compiler for static assets compilation in your Django app
Heroku provides a bunch of different
buildpacks that target many
popular platforms like Python, Ruby, NodeJS and Java web apps and backends.
While this is great and allows you to deploy virtually anything with a simple
git command, the out-of-the-box solutions offer a limited set of utilities
that are available during the
Slug compilation phase.
In particular no NodeJS, NPM or LESS Compiler
is available in the
heroku-buildpack-python. This means that there
is no straightforward way of compiling
.less stylesheets during
the app deployment.
Fortunately, the Python buildpack provides hooks for running pre-compile
and post-compile scripts. This can be used for customizing the compilation
step and running additional commands without the necessity of maintaining
a separate fork of Heroku's buildpack.
The only thing you need to do is to create a proper
script in the root directory of your application.
Just copy them over to your app reposiory and have your Less stylesheets compiled with an assets compressor like Django Compressor.
Note: the empty
/.heroku/collectstatic_disabled file deactivates the default collectstatic
build step that is part of the Heroku's buildpack. This will prevent the build script from doing
unnecessary work that is already handled by the above scripts.
A note on hosting static files on Amazon S3. Remember to enable the environment variables if you are using django-storages and uploading static assets to S3:
heroku labs:enable user-env-compile
Automatic Django configuration and utilities for Heroku
django-herokuify is a Django settings helper that makes is very easy to configure database, cache, storage, email and other common services for your Django project running on Heroku:
import herokuify from herokuify.common import * # Common settings, SSL proxy header from herokuify.aws import * # AWS access keys as configured in env from herokuify.mail.mailgun import * # Email settings for Mailgun add-on DATABASES = herokuify.get_db_config() # Database config CACHES = herokuify.get_cache_config() # Cache config for Memcache/MemCachier
See the project page for more information.
All in one
Django Modern Template is a project template for easy bootstrapping a Django project that can be deployed on Heroku.
Heroku caches Python virtual environment and all installed packages between project deploys.
CLEAN_VIRTUALENV flag has been removed from the buildpack,
currently the only way to clean app cache is by
changing the runtime.