id	summary	reporter	owner	description	type	status	component	version	severity	resolution	keywords	cc	stage	has_patch	needs_docs	needs_tests	needs_better_patch	easy	ui_ux
31865	Missing variable in admin template	Christian Ullrich	Carlton Gibson	"The `admin/nav_sidebar.html` template appears to be missing an assignment to `show_changelinks` where it includes `app_list.html`:

{{{
{% include 'admin/app_list.html' with app_list=available_apps %}
}}}

This leads to megabytes of log spam for every admin page visited with the sidebar on:

{{{
2020-08-07 09:06:49,882 [DEBUG   ] (django.template) Exception while resolving variable 'show_changelinks' in template 'admin/change_list.html'.
Traceback (most recent call last):
  File ""[python]\lib\site-packages\django\template\base.py"", line 829, in _resolve_lookup
    current = current[bit]
  File ""[python]\lib\site-packages\django\template\context.py"", line 83, in __getitem__
    raise KeyError(key)
KeyError: 'show_changelinks'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File ""[python]\lib\site-packages\django\template\base.py"", line 835, in _resolve_lookup
    if isinstance(current, BaseContext) and getattr(type(current), bit):
AttributeError: type object 'RequestContext' has no attribute 'show_changelinks'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File ""[python]\lib\site-packages\django\template\base.py"", line 843, in _resolve_lookup
    current = current[int(bit)]
ValueError: invalid literal for int() with base 10: 'show_changelinks'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File ""[python]\lib\site-packages\django\template\base.py"", line 848, in _resolve_lookup
    raise VariableDoesNotExist(""Failed lookup for key ""
django.template.base.VariableDoesNotExist: Failed lookup for key [show_changelinks] in [{'True': True, 'False': False, 'None': None},}}}
"	Bug	closed	contrib.admin	3.1	Release blocker	fixed			Ready for checkin	1	0	0	0	1	0