Zero in Textfield with readonlyTransformation shows ('none')

[nick-zooma]

Module version(s) affected

5.3.3

Description

In a textfield with int value 0, or string value '0' transformed with performReadonlyTransformation shows ('none')

How to reproduce

Code Sample

(TextField('Zero', 'Zero', 0))->performReadonlyTransformation()

(TextField('Zero', 'Zero', '0'))->performReadonlyTransformation()

Possible Solution

No response

Additional Context

No response

Validations

• Check that there isn't already an issue that reports the same bug
• Double check that your reproduction steps work in a fresh installation of silverstripe/installer (with any code examples you've provided)

[GuySartorelli]

It's hard to distinguish between "0 as a default integer value for a DBInt or DBPrimaryKey etc which literally means no value has been set" and "0 as an intentional value for a DBVarchar or similar which is a value value".

I'd be interested in what solution you'd recommend implementing here that accounts for both scenarios.

[NickStijger]

I would expect that null is used as unset value and not 0

[GuySartorelli]

That doesn't cover DBInt and DBPrimary key usages of the field, for which 0 is the "unset" value by default.