Deprecation: #97384 - TCA option "eval=null" replaced with "nullable"

See forge#97384

Description

The TCA option eval=null has been replaced with the boolean option nullable.

Impact

The TCA option eval=null will be automatically migrated to 'nullable' => true. The migration will trigger a PHP E_USER_DEPRECATED error.

Affected Installations

All installations defining the null value in their eval list.

Migration

To migrate your TCA add the TCA option 'nullable' => true and remove the null value from the field's eval list.

// Before

'columns' => [
   'nullable_column' => [
       'title' => 'A nullable field',
       'config' => [
           'eval' => 'null',
       ],
   ],
],

// After

'columns' => [
   'nullable_column' => [
       'title' => 'A nullable field',
       'config' => [
           'nullable' => true,
       ],
   ],
],