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
3982	Allow Field subclasses to coerce arbitrary Python types	Marty Alchin <gulopine@…>	nobody	In working with a recent !DurationField patch (#2443), I noticed that Django seems to rely on the backend database driver to coerce data into native Python types. However, when adding new fields with non-standard mappings (such as !FloatField for storage, but timedelta as a native type, as in !DurationField), `to_python` needs to be called explicitly when populating an object from the database in order to be usable. This simple patch does just that, using `to_python` to coerce native Python types, after whatever coercion might be done by the database.		closed	Database layer (models, ORM)	dev		fixed	coerce coercion	jm.bugtracking@… elsdoerfer@…	Unreviewed	1	1	1	1	0	0