Skip to main content
Help us improve Python packaging – donate today!

A base model class for adding version information and preventing concurrent modifications

Project Description

django-model-versions

A library for adding version information to models. This version information is then used to prevent concurrent modifications. E.g.

>>> b1 = Blog.objects.get(id=1)
>>> b2 = Blog.objects.get(id=1) # Same row as b1
>>> b1.title = 'Some blog'
>>> b1.save()
>>> b2.title = 'Some other blog'
>>> b2.save()

Will result in a ConcurrentModificationException being raised instead of overriding the data saved by b1.

Usage

Subclass modelversions.VersionedModel instead of django.db.models.Model. That’s it!

Known flaws

objects.update(…) will not increment the version number for objects altered. This would be better as a mixin. object.delete() will not check versioning Django admin hates it

Author

Colin Howe <colin@colinhowe.co.uk> http://www.colinhowe.co.uk - @colinhowe

Release history Release notifications

This version
History Node

0.4.0

Download files

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

Filename, size & hash SHA256 hash help File type Python version Upload date
django-model-versions-0.4.0.linux-x86_64.tar.gz (5.6 kB) Copy SHA256 hash SHA256 Dumb Binary any Sep 15, 2015
django-model-versions-0.4.0.tar.gz (3.4 kB) Copy SHA256 hash SHA256 Source None Sep 15, 2015

Supported by

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