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
22028	documentation: apps without models.py can register for db related signals	Val Neekman	donjpacheco	"Before Django 1.7, all apps in the INSTALLED_APPS required to have a models.py, and they could latch onto the database related signals such as the '''pre_syncdb''' and the '''post_syncdb'''. So the documentations didn't need to be specific.

However, with the introduction of the AppConfig, apps no longer required a models.py and hence the documentation could benefit from an extra line of explanation that ONLY the apps that have the models.py could register to the database related signals.

On this page:
https://docs.djangoproject.com/en/dev/ref/applications/#django.apps.AppConfig.models_module

This:
""It may be None if the application doesn’t contain a models module.""
Could be changed to:
""It may be None if the application doesn’t contain a models module. Please note that only applications with a models module can register for the database related signals such as '''pre_migrate''' / '''post_migrate''' signals.

"	Cleanup/optimization	closed	Documentation	dev	Normal	fixed	apps without models database signals	vneekman@…	Accepted	1	0	0	0	0	0