Enumeration helpers are callables, so the template system tried to call
them with no arguments.
Thanks Rupert Baker for helping discover this.
Backport of 5166097d7c80cab757e44f2d02f3d148fbbc2ff6 from master
Allows expected behavior when cast to str, also matching behaviour of
created instances with those fetched from the DB.
Thanks to Simon Charette, Nick Pope, and Shai Berger for reviews.
Backport of dbcd7b064e7278614f29fc45468d461e263d4da7 from master
These classes can serve as a base class for user enums, supporting
translatable human-readable names, or names automatically inferred
from the enum member name.
Additional properties make it easy to access the list of names, values
and display labels.
Thanks to the following for ideas and reviews:
Carlton Gibson, Fran Hrženjak, Ian Foote, Mariusz Felisiak, Shai Berger.
Co-authored-by: Shai Berger <shai@platonix.com>
Co-authored-by: Nick Pope <nick.pope@flightdataservices.com>
Co-authored-by: Mariusz Felisiak <felisiak.mariusz@gmail.com>
