Comments for Fragments of Code

Comment on Python script for Apache RewriteMap by Cogsy

Cogsy — Sun, 20 Dec 2009 00:07:50 +0000

Thanks man. Just the hint I needed to get the apache IO working.

Comment on Django: Why I made a template tag for MEDIA_URL by Mitch

Mitch — Wed, 09 Dec 2009 18:28:13 +0000

Thank you! Not sure if its me or what, but somehow, I’ve been trying to get the MEDIA_URL to work in a template for a couple days… for whatever reason… I never saw anyone else mention you had to use the RequestContext instead of the render_to_response.

Comment on Django group_required decorator by David Chandek-Stark

David Chandek-Stark — Mon, 12 Oct 2009 14:50:55 +0000

Technically, that’s not necessary because u.groups.all() is an empty list if u is an AnonymousUser — the only case under which u.is_authenticated() returns False. I agree, however, that allowing superusers to pass the test (as you have also added) is probably expected behavior in this case.

Comment on Django gotcha: related objects deleted by default by David Chandek-Stark

David Chandek-Stark — Fri, 09 Oct 2009 02:58:03 +0000

@Margie – Thanks for pointing that out. At the time I wrote the post (prior to Django 1.1), bulk delete was not available in the admin UI change list pages, and evidently I have not used the API to delete objects in bulk, so I wasn’t aware of this issue. On a positive note, features under consideration for Django 1.2 (http://code.djangoproject.com/wiki/Version1.2Features#ORM) include the ticket I referenced (http://code.djangoproject.com/ticket/7539), which calls for adding ON DELETE and ON UPDATE support. Hopefully, the developers will take care to apply this fix to both model and queryset delete() methods.

Comment on Django gotcha: related objects deleted by default by Margie

Margie — Thu, 08 Oct 2009 20:57:12 +0000

Unfortunately, this does not completely solve the problem. When the django “bulk delete” is used, the delete() method does not get called at all. Bulk delete is called, for example, when you delete a queryset, ie qset = Person.objects.all(username=”foo”).delete()

As it turns out, this “may or may not” be executed via a bulk delete. If it is execute through a bulk delete, your delete() method above will not get called and all of the deleted person’s related objects will get deleted.

Here is a thread in the django google group that discusses this. I’m really surprised that there is no way around this problem.

Comment on A Generic context processor for Django settings by Mark Stahler

Mark Stahler — Tue, 06 Oct 2009 01:25:09 +0000

Great idea but for those of us new to Django it would be nice to have a little more detail.

Comment on Tweaking Django auth admin by bjubb

bjubb — Mon, 05 Oct 2009 14:46:42 +0000

Sorry – here’s the real line of code:
UserAdmin.list_display = (‘username’, ‘email’, ‘first_name’, ‘last_name’, ‘is_staff’, ‘last_login’)

Trying to add the last login to the page….it works if i just edit the actual django admin file , but obviously i liked your method better.

Comment on Tweaking Django auth admin by bjubb

bjubb — Mon, 05 Oct 2009 14:44:14 +0000

i dont use autodiscover and use this instead in attempt to change which items are shown on the Auth->Users page:

from django.contrib.auth.admin import UserAdmin

UserAdmin.list_display(…)

The User/Group classes register fine, its just that my changes to the list_display dont work.

Comment on Tweaking Django auth admin by David Chandek-Stark

David Chandek-Stark — Sat, 03 Oct 2009 01:26:46 +0000

I don’t use autodiscover because I want more control over what gets added to the admin UI, so I’m not sure how this recipe plays in that scenario. You might simply be able to add the lines I’ve given before or after the autodiscover call (or import the module that contains them, which is what I do). As I said, importing the UserAdmin class from django.contrib.auth.admin effectively registers the admin classes from that module. Does autodiscover blow up if it encounters admin classes that are already registered?

Comment on Tweaking Django auth admin by bjubb

bjubb — Fri, 02 Oct 2009 14:49:02 +0000

Exactly how did you import your admin instead of the django.contrib.auth, yet also allow the autodiscover routine to run? Thanks – this tip should help me out nicely if I can get the import to work.