Can't edit a column when field is defined as a function

[JWesorick]

See example: https://codepen.io/JWesorick/pen/powXbzY

When a column has the field property set to a function and action set to "input", that column can no longer be edited.

[ota-meshi]

Thank you for the question.
If you want to use function and enable a set of values, you need to use the object, and the get and set properties.

        field: {get:(rec) => rec.fname, set:(rec,val)=>rec.fname=val},

Probably the method is not described in the documentation 😅