Skip to main content

pipeline for slugification edgecases in django

Project description

django_slugify_processor: pipeline for handling slugification edgecases

|pypi| |docs| |build-status| |coverage| |license|

What are slugs?

*Slugs* are URL's, typically generated from post titles, that you want to
be both human readable and a valid URL. They are SEO friendly.

Django provides a `slugify function <>`__
in ``django.utils.text.slugify`` which is also made available as a
`default filter <>`__.

Django slugs can be automatically generated in django models via packages
such as:

- `django-autoslug <>`__
(`docs <>`__)
(`github <>`__)
- `django-extensions <>`__
via `AutoSlugField <>`__
(`docs <>`__)
(`github <>`__)

The problem

This project is based on an article from ` <>`__
covering `django's import strings

Corner cases exist with slugification. For instance:

================ ============================= =============
Term ``django.utils.text.slugify`` What you want
================ ============================= =============
C c (correct) c
C++ c cpp
C# c c-sharp
================ ============================= =============

To make matters worse, if using a specialized model field like
``AutoSlugField`` from django-autoslug or django-extensions, the default
behavior may be to name the slugs for C++ and C# to "c-1", "c-2" after "c" is

Here's another case, acronyms / shorthands:

================== ============================= ===================
Term ``django.utils.text.slugify`` What you (may) want
================== ============================= ===================
New York City new-york-city nyc
Y Combinator y-combinator yc
Portland portland pdx
Texas texas tx
$ '' (empty) usd, aud, etc?
US$ US usd
A$ a aud
bitcoin bitcoin btc
United States united-states usa
League of Legends league-of-legends league
Apple® iPod Touch apple-ipod-touch ipod-touch
================== ============================= ===================

Each website and niche has its own edge cases for slugs. So we need a solution
that can scale, where you can craft your own functions.

How django-slugify-processor helps

This builds on top of `django.utils.text.slugify`_ to handle your django
project's edgecases. By default, django-slugify-processor will be a pass
through to django's default behavior. Adding slugification functions via
your Django project's settings file allows you to adjust.

.. _django.utils.text.slugify:


.. code-block:: sh

$ pip install django-slugify-processor


To create a processor, create a function that accepts a string, and
returns a string. Assume this is *project/app/*:

.. code-block:: python

def my_processor(value):
value = value.replace('++', 'pp')
return value

Inside of your settings, add a ``SLUGIFY_PROCESSORS`` list of strings
that points to the function. Anything that's compatible with
`import_string <>`__,
in your settings file:

.. code-block:: python



In normal django code

Import ``slugify`` from ``django_slugify_processor.text``:

.. code-block:: python

from django_slugify_processor.text import slugify

> 'cpp'

Template code

django-slugify-processor is designed to override the built-in``slugify``

via load

You can load by default via ``{% load django_slugify_processor %}``
in your template.

In your settings ``INSTALLED_APPS``:

.. code-block:: python


In your template:

.. code-block:: django

{% load slugify_processor %}

via built-in

To make this available in all templates, in the ``OPTIONS`` of your
template engine, add ``django_slugify_processor.template_tags``:

.. code-block:: python

'BACKEND': 'django.template.backends.django.DjangoTemplates',
'builtins': [

From within the template file:

.. code-block:: django


Output should be: cpp


For the most up to date documentation, view the documetation for the
plugin you're using (e.g. django-autoslug or django-extensions).

To use django-slugify-processor's ``slugify`` instead of django's default,
there will be a field option to use the function.


Tested with 1.9.7 (2017-11-26):

.. code-block:: python

from django.db import models

from django_extensions.db.fields import AutoSlugField
from django_slugify_processors.text import slugify

class MyModel(models.Model)
title = models.CharField(max_length=255)
slug = AutoSlugField(


Tested with 1.9.3 (2017-11-26):

.. code-block:: python

from django.db import models

from autoslug import AutoSlugField
from django_slugify_processors.text import slugify

class MyModel(models.Model)
title = models.CharField(max_length=255)
slug = AutoSlugField(


- travis.yml and tox.ini based off DRF's (BSD 2-clause licensed)
- yapf configuration based off RTD /'s (MIT-licensed)

Project details

============== ==========================================================
python support 2.7, >= 3.3, pypy, pypy3
django support 1.11
Test Coverage
Open Hub
License MIT
git repo .. code-block:: bash

$ git clone
install stable .. code-block:: bash

$ pip install --user django_slugify_processor
install dev .. code-block:: bash

$ git clone
$ cd ./django_slugify_processor
$ pipenv install --dev --skip-lock
$ pipenv shell
$ pip install -e .

See the `developing and testing`_ page in the docs for
tests .. code-block:: bash

$ make test
============== ==========================================================

.. |pypi| image::
:alt: Python Package

.. |build-status| image::
:alt: Build Status

.. |coverage| image::
:alt: Code Coverage

.. |license| image::
:alt: License

.. |docs| image::
:alt: Documentation Status
:scale: 100%

Download files

Download the file for your platform. If you're not sure which to choose, learn more about installing packages.

Files for django-slugify-processor, version 0.8.1
Filename, size File type Python version Upload date Hashes
Filename, size django-slugify-processor-0.8.1.tar.gz (7.9 kB) File type Source Python version None Upload date Hashes View hashes

Supported by

Elastic Elastic Search Pingdom Pingdom Monitoring Google Google BigQuery Sentry Sentry Error logging AWS AWS Cloud computing DataDog DataDog Monitoring Fastly Fastly CDN SignalFx SignalFx Supporter DigiCert DigiCert EV certificate StatusPage StatusPage Status page