tickets: 195

This data as json

id	created	changetime	last_pulled_from_trac	stage	status	component	type	severity	version	resolution	summary	description	owner	reporter	keywords	easy	has_patch	needs_better_patch	needs_tests	needs_docs	ui_ux
195	2005-07-25 18:55:15	2006-11-06 02:25:47	2022-03-06 03:20:02.972537	Unreviewed	closed	Core (Other)	defect	normal		fixed	Patch: Allow callables in the extra_context dictionary of django.views.generic.date_based	Sometimes you want to add extra context to your generic views that needs to be recalculated every time. For example you currently have {{{<li><a href="/weblog/2005/jul/">July 2005</a></li>}}} in the static part of source:/djangoproject.com/django_website/templates/base_weblog.html because you can't pass an auto-generated list of months into the template, as it would get generated when the url map is generated. The easiest way to solve this is to allow callables in the extra_context dictionary. Define a function or lambda which returns the data you want in the context when it's called, and then put a reference to it in the extra_context dict. Example adapted from source:/djangoproject.com/django_website/apps/blog/urls/blog.py : {{{ #!python info_dict = { 'app_label': 'blog', 'module_name': 'entries', 'date_field': 'pub_date', 'extra_context': { 'month_list': lambda: reverse(entries.get_pub_date_list('month', pub_date__lte=datetime.datetime.now())) } } }}} Attached is a patch that enables this behaviour	adrian	Moof <moof@metamoof.net>		0	0	0	0	0	0