DurationField form field value populated with instance.__repr__()

[Michael Angeletti]

Or,

DurationField doesn't accept input in the format of its own output

In the admin's add view for a model of mine I entered a 1 day duration in 1 0:00 format into the input for a DurationField on the model, I saved my model instance. This worked fine, and redirected me back to the admin list view, where that instance's DurationField's value was displayed as 1 day, 0:00:00 (default timedelta.__repr__). I visited the instance's change view, where the same input now also contained 1 day, 0:00:00 (default timedelta.__repr__ again). I tried saving the instance again, and received a validation error of '1 day, 0:00:00' value has an invalid format. It must be in [DD] [HH:[MM:]]ss[.uuuuuu] format. (raised in django.db.models.fields.DurationField.to_python).

[Tim Graham]

​PR

[Tim Graham <timograham@…>]

In 2d7c27d3870e57edd1b2ac46b49f0a8804753a1e:

Fixed #24302 -- Added DurationField.formfield()

[Tim Graham <timograham@…>]

In 9744529c1245dc675cf69fd76448aa60dc934941:

[1.8.x] Fixed #24302 -- Added DurationField.formfield()

Backport of 2d7c27d3870e57edd1b2ac46b49f0a8804753a1e from master