This Week in Django 12

This Week in Django is a weekly podcast about all things Django.

This week we discuss a few source commits, some great blog posts, the new django-dev IRC Channel and the IRC Channel Logger, the Tip of the Week, and a couple of items from the IRC channel.

Please see the Show Notes below for all the pertinent information and links

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Show Notes

Big News (1:01)

• PyCon Early Bird Registration has passed – Get signed up soon so you don’t miss out on this very cool event.

Tracking Trunk (1:46)

• Corrected Problem with Subclassed Field (7133) – Subclassing a Model field should assume that it is using the same database column type.

• Fixed Searching on IP Fields on PostgreSQL (7151) – Thanks to Matt McClanahan this corrects a problem with trying to do searching against IP Field types on PostgreSQL.

• Fixed ‘1st of January’ comparisons for SQLite (7150) – Special case for SQLite to handle detecting the first of January.

Community Catchup (8:25)

• #django-dev IRC Channel
  • Google Groups Posting

• django-evolution – database schema evolution for Django projects.

• Editing multiple objects in Django with newforms – Great post by Collin Grady demonstrating how to edit multiple items with NewForms.
  • Django Tip: Complex Forms – similar post by Malcolm Tredinnick

• Hosting a Django Site with Pure Python – Great post by Eric Florenzano that discusses using CherryPy with Django.

• Python Magazine Looking for Writers – If you’re interested in getting your name in print, contact them. Additionally, the inaugural issue from October 2007 is available for free on their Web site. If you sign up for a free account, the download link will appear in list of issues available for download there.
  • PyMOTW – Python Module of the Week.

Tip of the Week (26:08)

Overriding ModelChoiceField Labels – A solution for modifying how the labels in a select box appear. Read Brian Rosner’s excellent post on the topic.

IRC Ad Nauseam (30:42)

Django IRC FAQ

Backwards Incompatible Changes Information

Django Bot

• New Django IRC Channel Logger – The old one died, we promised you a new one. Enjoy! We’re doing it in true iterative fashion. If there is functionality you’d like to see let us know. Other channels being logged can be found here

I am creating a custom template tag, how do I get access to my template variables in my new custom template tag?

• Django Documentation on passing template variables to the tag
• All arguments to the tag are unpacked as string literals.
• Resolve the string arguments to their context variable form (such as converting the string element back into a Post instance object) by using the template.Variable class.
• In the Development version the Variable class is used instead of the resolve_variable function. Changeset 6399 made this change.

I just created a Custom Management Command Extension and it’s not showing up in the list when I type ./manage.py help. What’s the problem?

There is a bug in the Custom Management Commands where it will not find and register commands if the INSTALLED_APPS setting refers to project_name.app_name. So for the time being you need to refer to these apps that have custom management commands in them by just using app_name.

• Django Documentation on Custom Management Commands
• Two tickets related to this issue:
  • Ticket 5825
  • Ticket 6128
• Custom Management Commands Screencast
• Custom Management Commands Cheatsheet
• django-command-extensions – Open source project to collect a bunch of custom commands in one app.

Thank You! (43:51)