Class Atk4\Data\Field\CallbackField

`extends`	`Field`
`uses`	`InitializerTrait`

Evaluate php expression after load.

Atk4\Data\Field implements Expressionable uses DiContainerTrait, FieldPropertiesTrait, JoinLinkTrait, ReadableCaptionTrait, TrackableTrait
- Atk4\Data\Field\CallbackField uses InitializerTrait

Located at data/src/Field/CallbackField.php

Methods
`protected`	`init(): void`	#

Methods inherited from Atk4\Data\Field
`__construct(), setOwner(), setDefaults(), onHookToOwnerEntity(), normalize(), get(), set(), setNull(), compare(), hasReference(), getReference(), getPersistenceName(), useAlias(), getQueryArguments(), isEditable(), isVisible(), isHidden(), getCaption(), getDsqlExpression(), __debugInfo(), getOwner()`

Methods used from Atk4\Core\DiContainerTrait
`setMissingProperty(), assertInstanceOf(), _fromSeedPrecheck(), fromSeed(), fromSeedUnsafe()`

Methods used from Atk4\Data\Model\JoinLinkTrait
`hasJoin(), getJoin()`

Methods used from Atk4\Core\ReadableCaptionTrait
`readableCaption()`

Methods used from Atk4\Core\TrackableTrait
`issetOwner(), unsetOwner(), getDesiredName(), destroy()`

Methods used from Atk4\Core\InitializerTrait
`isInitialized(), assertIsInitialized(), invokeInit()`

Properties
`public`	`bool`	`$neverPersist = true`	#
`public`	`bool`	`$readOnly = true`	#
`public`	`Closure(object): mixed`	`$expr`	#

Properties used from Atk4\Data\Model\FieldPropertiesTrait
`$actual, $neverSave, $type, $nullable, $required, $enum, $values, $referenceLink, $system, $default, $caption, $ui`

Properties used from Atk4\Data\Model\JoinLinkTrait
`$joinName`

Properties used from Atk4\Core\TrackableTrait
`$_owner, $shortName`

Properties used from Atk4\Core\InitializerTrait
`$_initialized`