Django ArrayField

Question

I have problem with ArrayField in django admin. When I trying save object with None values, even it wasn't changed, I get error: Item 5 in the array did not validate: Enter a whole number. Model looks like this:

class MyModel(models.Model):
    rank = ArrayField(
        models.PositiveIntegerField(null=True)
    )

and field data 4,4,4,4,4,None,4,4 How I can fix this problem?

Iain Shelvington · Accepted Answer · 2016-08-10 13:27:07Z

4

Django form fields will only set null values if it matches one of EMPTY_VALUES from validators

EMPTY_VALUES = (None, '', [], (), {})

SimpleArrayField first splits the incoming data resulting in ['4', '4', '4', '4', '4', 'None', '4', '4'], the string 'None' does not match the literal None so does not get converted to a null value

You need to pass an empty string: 4,4,4,4,4,,4,4 as your field data

answered Aug 10, 2016 at 13:27

Iain Shelvington

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