SimpleArrayField missing clean method which leads to unexpected validation error.

[Scott Allen]

For reproduction and screenshot of admin error see: ​https://github.com/sgallen/django-simplearrayfield-bug

When a model field of the following form is used:
ArrayField(models.IntegerField(choices=((0, 'foo'),(1, 'bar'))))

The submission of a seemingly valid value e.g. 1 via the admin form leads to the unexpected message:
Item 0 in the array did not validate:

There is no additional message after the colon.

The cause of this error is a missing clean method in the SimpleArrayField. As a result, there is no call to self.base_field.clean(item) which in this case is the TypedChoiceField. Consequently the submitted string value is never coerced to an int and therefore the string comparison to the int choices will always fail.

[Scott Allen]

I've created a pull request: ​https://github.com/django/django/pull/6174

If I'm missing anything or my adherence to the standard contribution protocol is off, please let me know. This is my first time doing this.

[Tim Graham]

I'm not yet convinced that so much duplication between to_python() and clean() is the proper solution.

[David Szotten]

i'm wondering if the issue is with the TypedChoiceField. I was thinking it should do the coercion in a to_python method and not in clean. The problem with that is https://code.djangoproject.com/ticket/21397 (which I don't think I agree with)

[Mariusz Felisiak]

Duplicate of #27161, fixed in 9dd244394236388c3479ab202a0ec31055f7ec09.