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
31261	Add support for defining Enum fields with dict, tuple, set and list values	Tom Forbes	nobody	"As per the discussion on this forum post: https://forum.djangoproject.com/t/moving-to-django-3-0s-field-choices-enumeration-types/970/8

It would be good to support two fairly common use cases with Enums: defining groups of related values (groups), and defining grouping for use with specific widgets.

One way to enable both of these would be to simply special-case enum values with `dict`, `tuple`, `set` and `list` values:


{{{
class MoonMissions(Enum):
    APOLLO_10 = 1
    APOLLO_11 = 2
    EXPLORER_33 = 3

    FAILED_MISSIONS = {EXPLORER_33}
    SUCCESSFUL_MISSIONS = (APOLLO_10, APOLLO_11)
    
    SUCCESS_GROUPING = {
        ""Failed"": FAILED_MISSIONS,
        ""Successful"": SUCCESSFUL_MISSIONS
    }
   
    COUNTRY_GROUPING = [
         [""USA"", [APOLLO_10, APOLLO_11, EXPLORER_33]]
    ]
}}}

Now a user can do:


{{{
SomeModel.objects.filter(mission__in=MoonMissions.FAILED_MISSIONS)
enum_form_field.value in MoonMissions.SUCCESSFUL_MISSIONS
models.IntegerField(choices=MoonMissions.COUNTRY_GROUPING)
}}}"	New feature	new	Database layer (models, ORM)	dev	Normal				Unreviewed	0	0	0	0	0	0