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13 Commits

Author SHA1 Message Date
Nick Pope
fe19b33e2f Modernized enumeration helpers on Python 3.11+. 
- use @enum.property

https://docs.python.org/3/library/enum.html#enum.property

- use @enum.nonmember

Using @property on an enum class does not yield the expected result.
do_not_call_in_templates attribute works because a @property instance
is truthy. We can make this a literal True value as expected by using
@enum.nonmember in Python 3.11+.

https://docs.python.org/3/library/enum.html#enum.nonmember

- used enum.IntEnum/StrEnum

Python 3.11+ has ReprEnum which uses int.__str__() and str.__str__()
for __str__() in the `IntEnum` and `StrEnum` subclasses. We can emulate
that for Python < 3.11.

https://docs.python.org/3/library/enum.html#enum.ReprEnum
https://docs.python.org/3/library/enum.html#enum.IntEnum
https://docs.python.org/3/library/enum.html#enum.StrEnum
 2023-09-13 08:30:21 +02:00
Nick Pope
e15174983a Renamed ChoicesMeta to ChoicesType. 
This also uses enum.EnumType for Python 3.11+ as Python 3.11 renamed
EnumMeta to EnumType. While the former is still available as an alias
of the latter for now, let's prefer the canonical name for this.

Check out https://docs.python.org/3/library/enum.html#enum.EnumType
 2023-09-12 11:51:01 +02:00
Mariusz Felisiak
2eb1f37260
Refs #34118 -- Fixed CustomChoicesTests.test_uuid_unsupported on Python 3.11.4+. 
5342f5e713

Follow up to 38e63c9e61.
 2023-04-07 11:07:54 +02:00
Mariusz Felisiak
38e63c9e61
Refs #34118 -- Fixed CustomChoicesTests.test_uuid_unsupported on Python 3.12+. 
2a4d8c0a9e
 2023-04-05 13:59:10 +02:00
django-bot
9c19aff7c7 Refs #33476 -- Reformatted code with Black. 2022-02-07 20:37:05 +01:00
Mariusz Felisiak
c6859f1a68
Refs #32074 -- Backported Enum.__repr__() from Python 3.10. 
Enum.__repr__() was changed in [1], we should use the same format in
Python < 3.10.

[1] https://bugs.python.org/issue40066
 2021-04-07 10:28:40 +02:00
Nick Pope
a96c730431 Fixed #32460 -- Allowed "label"/"do_not_call_in_templates" members in model choice enums. 2021-03-24 07:45:33 +01:00
Nick Pope
41e39c41c9 Refs #32460 -- Doc'd and tested that property names of model choice enums cannot be used as members. 2021-03-24 07:45:33 +01:00
Adam Johnson
5166097d7c Fixed #31154 -- Added support for using enumeration types in templates. 
Enumeration helpers are callables, so the template system tried to call
them with no arguments.

Thanks Rupert Baker for helping discover this.
 2020-01-10 07:52:06 +01:00
Nick Pope
7552de7866 Used more specific unittest assertions in tests. 
* assertIsNone()/assertIsNotNone() instead of comparing to None.
* assertLess() for < comparisons.
* assertIs() for 'is' expressions.
* assertIsInstance() for isinstance() expressions.
* rounding of assertAlmostEqual() for round() expressions.
* assertIs(..., True/False) instead of comparing to True/False.
* assertIs()/assertIsNot() for ==/!= comparisons.
* assertNotEqual() for == comparisons.
* assertTrue()/assertFalse() instead of comparing to True/False.
 2019-10-29 12:37:30 +01:00
Carlton Gibson
dbcd7b064e Fixed #30902 -- Added __str__() for model choice enums. 
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.
 2019-10-25 09:19:56 +02:00
Mariusz Felisiak
1877ec1875
Refs #27910 -- Added __init__.py file for model_enums tests. 2019-10-15 21:27:22 +02:00
Shai Berger
72ebe85a26 Fixed #27910 -- Added enumeration helpers for use in Field.choices. 
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>
 2019-09-04 14:42:49 +02:00