[v4] Select column cannot be changed from empty state

[TrioZach]

Package

filament/filament

Package Version

v4.0.0-beta25

Laravel Version

v12.22.1

Livewire Version

v3.6.4

PHP Version

PHP 8.4.11

Problem description

When using a SelectColumn in a table with ->options([...]), if the record doesn't have a state for the column, you can't use the select to change the value of the column. I.e. it won't let you change away from a null value. A validation error occurs, even though the selected option is valid.

Expected behavior

The SelectColumn should validate that the selected option is in fact valid, and save the state.

Steps to reproduce

Simply use a SelectColumn with an options array like so, and try to select any option.

SelectColumn::make('department')
    ->options([
        'sales' => 'Sales',
        'marketing' => 'Marketing',
        'finance' => 'Finance',
        'hr' => 'HR',
        'it' => 'IT',
    ]),

See app/Filament/Resources/People/Tables/PeopleTable.php in the reproduction repository.

Reproduction repository (issue will be closed if this is not valid)

https://github.com/TrioZach/filament-select-column-bug

Relevant log output

[pimoudeveldhuis]

I've encountered the same and done some digging. I believe it goes wrong in the following file:
vendor/filament/tables/src/Columns/SelectColumn.php:148 (to line 153)

If checks whether the $optionLabel is blank or not, but does this with the current $optionLabel (so if you have a NULL in the database and you are now updating this row to a value, it triggers this check). Then it adds Rule::in([]) to the ruleset and that part fails the validation therefor the row does not get updated.

I have no clue about the side effects from removing the Rule::in([]), but removing that part fixes the issue making it possible to update values that are currently NULL in the database.

Hope this helps :)

Regards,