#30931: Cannot override get_FOO_display() in Django 2.2+.
-------------------------------------+-------------------------------------
Reporter: Jim Ouwerkerk | Owner: Carlton
| Gibson
Type: Bug | Status: assigned
Component: Database layer | Version: 2.2
(models, ORM) |
Severity: Release blocker | Resolution:
Keywords: | Triage Stage: Accepted
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
-------------------------------------+-------------------------------------
Comment (by Sergey Fedoseev):
I don't think it should be marked as blocker since it looks like it was
never supported, because it depends on the order of `attrs` passed in
`ModelBase.__new__()`. So on Django 2.1 and Python 3.7:
{{{
In [1]: import django
...: django.VERSION
In [2]: from django.db import models
...:
...: class FooBar(models.Model):
...: def get_foo_bar_display(self):
...: return "something"
...:
...: foo_bar = models.CharField("foo", choices=[(1, 'foo'), (2,
'bar')])
...:
...: def __str__(self):
...: return self.get_foo_bar_display() # This returns 'foo' or
'bar' in 2.2, but 'something' in 2.1
...:
...: class Meta:
...: app_label = 'test'
...:
...: FooBar(foo_bar=1)
Out[2]: <FooBar: foo>
}}}
Before [https://docs.python.org/3.8/whatsnew/3.6.html#whatsnew36-pep520
Python 3.6] the order of `attrs` wasn't defined at all.
--
Ticket URL: <https://code.djangoproject.com/ticket/30931#comment:4>
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