Monday, March 31, 2008
This Week in Django 16
This Week in Django is a weekly podcast about all things Django.
This week we talk about a few source commits, NewForms-Admin branch updates, a whole bunch of excellent blog posts from the community, the Tip of the Week, and a couple of questions from the IRC.
Please see the Show Notes below for all the pertinent information and links
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Show Notes
Intro
We discuss the new intro music, the fake Brian Rosner, and all the great supporters of the show that we met at PyCon.
Tracking Trunk (4:48)
- Converted the Admin to use the new paginator
(7363)– follows on last week’s Changeset 7306 which implemented the new paginator syntax.
- Removed the ado_mssql Backend
(7364)– Yeah, out with the cruft.
- Added Basics to build Docs with Sphinx
(7370)– Sphinx is a really nice Python documentation generator.
Branching & Merging (11:13)
Community Catchup (16:23)
- Django Error Notification with Jabber – Awesome post by Nuno Mariz where he describes how to setup Django to send website errors to your IM client. The implementation is elegant and simple.
- Using Jinja With Django – a bit controversial, but a good read. David Cramer has been posting regularly with some thought provoking posts.
- A Faster Django Test Suite – Brian Rosner tests out an implementation of Django’s test suites that take advantage of multiple cores.
- More Django Queryset Notes and Queryset Implementation – Excellent posts by Malcolm Tredinnick on the internals of some of the Queryset Refactor stuff and sets the record straight on a couple of items that we incorrectly commented on last week.
- Django Snippets: Control FCGI processes through management – Snippet that adds fcgi to
settings.INSTALLED_APPS, which allows you to start and stop FCGI processes throughmanage.py
- FormWizard: multiple-step forms in Django – Great post by Jared Kuolt (aka SuperJared) that quickly follows on the heals of the last week’s Changeset 7236 which added a new django.contrib.formtools.wizard app.
Tip of the Week (32:27)
get_object_or_404 can take a QuerySet.
get_object_or_404(Portfolio.objects.all().select_related(), slug=slug)
IRC Ad Nauseam (36:36)
Backwards Incompatible Changes Information
How do you copy a model instance object?
The easiest way is to set the primary key for the model to None. Then save the instance. This will create a new record in the database.
post = Post.objects.get(pk=1)
post.pk = None
post.save()
I’m trying to run tests on my application that is just template tags. It’s not working. What’s the problem?
The testing framework requires there to be a models.py in the application. Create this file and everything should work fine.
Comments - 1 person has already said something. Join the discussion.
Paul said…
Good stuff as usual. I didn't know that about `get_object_or_404` and querysets!
The tip on pyprocessing was very interesting too. Like a lot of web programmers, I don't do a lot with explicit concurrency, but I recently rewrote a simple image-processing utility to take advantage of multiple cores (virtually all our machines at work are multicore, including several quad-core Mac Pros), and ended up manually doing some of the stuff that this module does for you.