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
37352	ServerFormatter changed incompatibly in Django 2.1	Jacob Walls		"While developing djangoproject.com, a failing request spewed a large stacktrace to my terminal, as described [https://github.com/django/djangoproject.com/issues/1673 here]. Root cause was: that project's logging config extends Django's, and it never caught up with a backward incompatible change in Django 2.1 (#28810) that meant the injection of the `server_time` variable would only happen for f-string format strings, no longer for %-style format strings.

This breaking change was mentioned during triage but didn't get a response during review.

Of course, I could fix this in djangoproject.com, but it's just as easy to fix it in Django where other projects could benefit.

Proposal: this util:

{{{#!py
    def uses_server_time(self):
        return self._fmt.find(""{server_time}"") >= 0
}}}

Should not assume f-string style formatting."	Bug	new	Utilities	2.1	Normal				Unreviewed	0	0	0	0	1	0