Tag archive for "Django"

Django

Powerboat The title of this post is what I originally tried to do, but the solution to the problem was to do a small refactoring and to use the low level cache API. This post will explain how I modified my approach after thinking about the problem for a while. more

Wagtail has "scheduled" pages that are not yet visible on the site. I think the interface is not ideal as you need to click the Publish button after setting a publication date on the Settings tab. I'm not sure how exactly the data models work, but the actual publication is … more

Recently I started working on a Django project, loaded the prod database into it, and ran the tests. Then the data was gone. I know some people intentionally want to run tests on the "main database", and there is a very simple way to achieve this. Simply inherit from a … more

This is an update for my post about automated django deployments more

Battleship engine room This post describes a deployment and maintenance method for Django projects that was designed with scalability in mind. The goal is to push new releases into production at any moment with minimal or no downtime. Upgrades can be performed with unprivileged access to the production server, and rollbacks are possible. I use Gunicorn, Fabric and Supervisord in the examples. more

One of my client uses google apps, so I use that account to send out mails with Django, which works just fine. However, google silently drops all error mails to the admins, for whatever reason you can't debug and will never hear anything about anyway. As those mails only go … more

Iceland Django was always great for developers out of the box, but creating friendly admin interfaces was always a little too much work. This post explains why I now consider using Wagtail to make this task easier. more

Migrating Django projects with fixtures

2014-05-07

When migrating a Django project it's often useful to work with the built-in dumpdata and loaddata management commands. However, this can easily lead to errors like django.db.utils.IntegrityError: Problem installing fixture Could not load foo.Bar(pk=ba): (1062, "Duplicate entry for key 'app_label'"). Such errors indictate that a similar object already exists in … more

RuntimeError: App registry isn't ready yet

2014-04-13

The upcoming Django 1.7 has many interesting and welcomed changes. One of them is an update to how applications are loaded. The relase notes also mention potential problems with these changes. I ran into RuntimeError: App registry isn't ready yet while using the self-contained tests approach, but the fix is … more

Django-filter and custom querysets

2014-03-21

Django-filter is a powerful tool, but the documentation is a little sparse. If you want to see examples of custom Filters you have to dive into the source code. I recently wanted to add a filter for methods on a custom QuerySet. Unlike custom managers, custom QuerySets allow you to … more

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