Craft 5 Class Reference

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Fields ​

Type
Class
Namespace
craft\services
Inherits
craft\services\Fields » yii\base\Component » yii\base\BaseObject
Implements
yii\base\Configurable
Since
3.0.0

Fields service.

An instance of the service is available via Craft::$app->fields.

View source

Public Properties ​

PropertyDescription
allFieldTypesstring[] – The available field type classes
allFieldscraft\base\FieldInterface[] – The fields
allLayoutscraft\models\FieldLayout[]
behaviorsyii\base\Behavior – List of behaviors attached to this component.
fieldContextstring – The active field context
fieldTypesWithContentstring[] – The field type classes
fieldVersionstring, null
fieldsWithContentcraft\base\FieldInterface[] – The fields
fieldsWithoutContentcraft\base\FieldInterface[] – The fields
nestedEntryFieldTypesstring[] – The field type classes which manage nested entries
relationalFieldTypesstring[] – The available relational field type classes

allFieldTypes ​

Type
string[]
Default value
null
Access
Read-only

The available field type classes

View source

allFields ​

Type
craft\base\FieldInterface[]
Default value
null
Access
Read-only

The fields

View source

allLayouts ​

Type
craft\models\FieldLayout[]
Default value
null
Access
Read-only
Since
5.0.0

View source

fieldContext ​

Type
string
Default value
'global'
Since
5.0.0

The active field context

View source

fieldTypesWithContent ​

Type
string[]
Default value
null
Access
Read-only

The field type classes

View source

fieldVersion ​

Type
string, null
Default value
null
Access
Read-only
Since
3.7.21

View source

fieldsWithContent ​

Type
craft\base\FieldInterface[]
Default value
null
Access
Read-only

The fields

View source

fieldsWithoutContent ​

Type
craft\base\FieldInterface[]
Default value
null
Access
Read-only
Since
4.3.2

The fields

View source

nestedEntryFieldTypes ​

Type
string[]
Default value
null
Access
Read-only

The field type classes which manage nested entries

View source

relationalFieldTypes ​

Type
string[]
Default value
null
Access
Read-only
Since
5.1.6

The available relational field type classes

View source

Public Methods ​

MethodDescription
__call()Calls the named method which is not a class method.
__clone()This method is called after the object is created by cloning an existing one.
__construct()Constructor.
__get()Returns the value of a component property.
__isset()Checks if a property is set, i.e. defined and not null.
__serialize()Serializer
__set()Sets the value of a component property.
__unset()Sets a component property to be null.
applyFieldDelete()Applies a field delete to the database.
applyFieldSave()Applies a field save to the database.
areFieldTypesCompatible()Returns whether the two given field types are considered compatible with each other.
assembleLayoutFromPost()Assembles a field layout from post data.
attachBehavior()Attaches a behavior to this component.
attachBehaviors()Attaches a list of behaviors to the component.
behaviors()Returns a list of behaviors that this component should behave as.
canGetProperty()Returns a value indicating whether a property can be read.
canSetProperty()Returns a value indicating whether a property can be set.
className()Returns the fully qualified name of this class.
createField()Creates a field with a given config.
createFieldConfig()Returns the config for the given field.
createLayout()Creates a field layout from the given config.
createLayoutElement()Creates a field layout element instance from its config.
deleteField()Deletes a field.
deleteFieldById()Deletes a field by its ID.
deleteLayout()Deletes a field layout.
deleteLayoutById()Deletes a field layout(s) by its ID.
deleteLayoutsByType()Deletes field layouts associated with a given element type.
detachBehavior()Detaches a behavior from the component.
detachBehaviors()Detaches all behaviors from the component.
doesFieldWithHandleExist()Returns whether a field exists with a given handle and context.
ensureBehaviors()Makes sure that the behaviors declared in behaviors() are attached to this component.
findFieldUsages()Returns all the field layouts that contain the given field.
getAllFieldTypes()Returns all available field type classes.
getAllFields()Returns all fields within a field context(s).
getAllLayouts()Returns all saved field layouts.
getBehavior()Returns the named behavior object.
getBehaviors()Returns all behaviors attached to this component.
getCompatibleFieldTypes()Returns all field types whose column types are considered compatible with a given field.
getFieldByHandle()Returns a field by its handle and optional context.
getFieldById()Returns a field by its ID.
getFieldByUid()Returns a field by its UID.
getFieldTypesWithContent()Returns all field types that have a column in the content table.
getFieldVersion()Returns the current field version.
getFieldsByType()Returns all fields of a certain type.
getFieldsWithContent()Returns all fields that store content in the elements_sites.content table.
getFieldsWithoutContent()Returns all fields that don’t store content in the elements_sites.content table.
getLayoutById()Returns a field layout by its ID.
getLayoutByType()Returns a field layout by its associated element type.
getLayoutByUid()Returns a field layout by its UUID.
getLayoutsByIds()Returns field layouts by their IDs.
getLayoutsByType()Returns all of the field layouts associated with a given element type.
getNestedEntryFieldTypes()Returns all field types which manage nested entries.
getRelationalFieldTypes()Returns all available relational field type classes.
handleChangedField()Handle field changes.
handleDeletedField()Handle a field getting deleted.
hasEventHandlers()Returns a value indicating whether there is any handler attached to the named event.
hasMethod()Returns a value indicating whether a method is defined.
hasProperty()Returns a value indicating whether a property is defined for this component.
init()Initializes the object.
off()Detaches an existing event handler from this component.
on()Attaches an event handler to an event.
prepFieldForSave()Preps a field to be saved.
refreshFields()Refreshes the internal field cache.
restoreLayoutById()Restores a field layout by its ID.
saveField()Saves a field.
saveLayout()Saves a field layout.
trigger()Triggers an event.
updateFieldVersion()Sets a new field version, so the CustomFieldBehavior class will get regenerated on the next request.

__serialize() ​

Since
3.5.14

Serializer

View source

applyFieldDelete() ​

Since
3.1.0

Applies a field delete to the database.

View source

Arguments ​

Throws ​

applyFieldSave() ​

Since
3.1.0

Applies a field save to the database.

View source

Arguments ​

areFieldTypesCompatible() ​

Since
5.3.0

Returns whether the two given field types are considered compatible with each other.

View source

Arguments ​

  • $fieldA (class-string<\craft\base\FieldInterface>)
  • $fieldB (class-string<\craft\base\FieldInterface>)

Returns ​

boolean

assembleLayoutFromPost() ​

Assembles a field layout from post data.

View source

Arguments ​

  • $namespace (string, null) – The namespace that the form data was posted in, if any

Returns ​

craft\models\FieldLayout – The field layout

Throws ​

createField() ​

Creates a field with a given config.

View source

Arguments ​

  • $config (class-string<\craft\services\T>, array) – The field’s class name, or its config, with a type value and optionally a settings value

Returns ​

\craft\services\T – The field

createFieldConfig() ​

Since
3.1.0

Returns the config for the given field.

View source

Arguments ​

Returns ​

array

createLayout() ​

Since
4.0.0

Creates a field layout from the given config.

View source

Arguments ​

Returns ​

craft\models\FieldLayout

createLayoutElement() ​

Since
3.5.0

Creates a field layout element instance from its config.

View source

Arguments ​

Returns ​

\craft\services\T

Throws ​

deleteField() ​

Deletes a field.

View source

Arguments ​

Returns ​

boolean – Whether the field was deleted successfully

Throws ​

deleteFieldById() ​

Deletes a field by its ID.

View source

Arguments ​

  • $fieldId (integer) – The field’s ID

Returns ​

boolean – Whether the field was deleted successfully

deleteLayout() ​

Deletes a field layout.

View source

Arguments ​

Returns ​

boolean – Whether the field layout was deleted successfully

deleteLayoutById() ​

Deletes a field layout(s) by its ID.

View source

Arguments ​

Returns ​

boolean – Whether the field layout was deleted successfully

deleteLayoutsByType() ​

Deletes field layouts associated with a given element type.

View source

Arguments ​

  • $type (class-string<\craft\base\ElementInterface>) – The element type

Returns ​

boolean – Whether the field layouts were deleted successfully

doesFieldWithHandleExist() ​

Returns whether a field exists with a given handle and context.

View source

Arguments ​

Returns ​

boolean – Whether a field with that handle exists

findFieldUsages() ​

Since
5.0.0

Returns all the field layouts that contain the given field.

View source

Arguments ​

Returns ​

craft\models\FieldLayout[]

getAllFieldTypes() ​

Returns all available field type classes.

View source

Returns ​

string[] – The available field type classes

getAllFields() ​

Returns all fields within a field context(s).

View source

Arguments ​

Returns ​

craft\base\FieldInterface[] – The fields

getAllLayouts() ​

Since
5.0.0

Returns all saved field layouts.

View source

Returns ​

craft\models\FieldLayout[]

getCompatibleFieldTypes() ​

Returns all field types whose column types are considered compatible with a given field.

View source

Arguments ​

  • $field (craft\base\FieldInterface) – The current field to base compatible fields on
  • $includeCurrent (boolean) – Whether $field's class should be included

Returns ​

string[] – The compatible field type classes

getFieldByHandle() ​

Returns a field by its handle and optional context.

View source

Arguments ​

Returns ​

craft\base\FieldInterface, null – The field, or null if it doesn’t exist

Example ​

php
$body = Craft::$app->fields->getFieldByHandle('body');
twig
{% set body = craft.app.fields.getFieldByHandle('body') %}
{{ body.instructions }}

getFieldById() ​

Returns a field by its ID.

View source

Arguments ​

  • $fieldId (integer) – The field’s ID

Returns ​

craft\base\FieldInterface, null – The field, or null if it doesn’t exist

getFieldByUid() ​

Returns a field by its UID.

View source

Arguments ​

  • $fieldUid (string) – The field’s UID

Returns ​

craft\base\FieldInterface, null – The field, or null if it doesn’t exist

getFieldTypesWithContent() ​

Returns all field types that have a column in the content table.

View source

Returns ​

string[] – The field type classes

getFieldVersion() ​

Since
3.7.21

Returns the current field version.

View source

Returns ​

string, null

getFieldsByType() ​

Since
4.4.0

Returns all fields of a certain type.

View source

Arguments ​

Returns ​

craft\base\FieldInterface[] – The fields

getFieldsWithContent() ​

Returns all fields that store content in the elements_sites.content table.

View source

Arguments ​

Returns ​

craft\base\FieldInterface[] – The fields

getFieldsWithoutContent() ​

Since
4.3.2

Returns all fields that don’t store content in the elements_sites.content table.

View source

Arguments ​

Returns ​

craft\base\FieldInterface[] – The fields

getLayoutById() ​

Returns a field layout by its ID.

View source

Arguments ​

  • $layoutId (integer) – The field layout’s ID

Returns ​

craft\models\FieldLayout, null – The field layout, or null if it doesn’t exist

getLayoutByType() ​

Returns a field layout by its associated element type.

View source

Arguments ​

  • $type (class-string<\craft\base\ElementInterface>) – The associated element type

Returns ​

craft\models\FieldLayout – The field layout

getLayoutByUid() ​

Returns a field layout by its UUID.

View source

Arguments ​

  • $uid (string) – The field layout’s UUID

Returns ​

craft\models\FieldLayout, null – The field layout, or null if it doesn’t exist

getLayoutsByIds() ​

Since
3.7.27

Returns field layouts by their IDs.

View source

Arguments ​

  • $layoutIds (integer[]) – The field layouts’ IDs

Returns ​

craft\models\FieldLayout[] – The field layouts

getLayoutsByType() ​

Since
3.5.0

Returns all of the field layouts associated with a given element type.

View source

Arguments ​

  • $type (class-string<\craft\base\ElementInterface>)

Returns ​

craft\models\FieldLayout[] – The field layouts

getNestedEntryFieldTypes() ​

Returns all field types which manage nested entries.

View source

Returns ​

string[] – The field type classes which manage nested entries

getRelationalFieldTypes() ​

Since
5.1.6

Returns all available relational field type classes.

View source

Returns ​

string[] – The available relational field type classes

handleChangedField() ​

Handle field changes.

View source

Arguments ​

Throws ​

handleDeletedField() ​

Handle a field getting deleted.

View source

Arguments ​

prepFieldForSave() ​

Since
3.1.2

Preps a field to be saved.

View source

Arguments ​

refreshFields() ​

Since
3.0.20

Refreshes the internal field cache.

This should be called whenever a field is updated or deleted directly in the database, rather than going through this service.

View source

restoreLayoutById() ​

Since
3.1.0

Restores a field layout by its ID.

View source

Arguments ​

  • $id (integer) – The field layout’s ID

Returns ​

boolean – Whether the layout was restored successfully

saveField() ​

Saves a field.

View source

Arguments ​

Returns ​

boolean – Whether the field was saved successfully

Throws ​

saveLayout() ​

Saves a field layout.

View source

Arguments ​

Returns ​

boolean – Whether the field layout was saved successfully

Throws ​

updateFieldVersion() ​

Sets a new field version, so the CustomFieldBehavior class will get regenerated on the next request.

View source

Events ​

EVENT_AFTER_DELETE_FIELD ​

Type
craft\events\FieldEvent

The event that is triggered after a field is deleted.

EVENT_AFTER_DELETE_FIELD_LAYOUT ​

Type
craft\events\FieldLayoutEvent

The event that is triggered after a field layout is deleted.

EVENT_AFTER_SAVE_FIELD ​

Type
craft\events\FieldEvent

The event that is triggered after a field is saved.

EVENT_AFTER_SAVE_FIELD_LAYOUT ​

Type
craft\events\FieldLayoutEvent

The event that is triggered after a field layout is saved.

EVENT_BEFORE_APPLY_FIELD_DELETE ​

Type
craft\events\FieldEvent
Since
3.1.0

The event that is triggered before a field delete is applied to the database.

EVENT_BEFORE_APPLY_FIELD_SAVE ​

Type
craft\events\ApplyFieldSaveEvent
Since
5.5.0

The event that is triggered before a field save is applied to the database.

EVENT_BEFORE_DELETE_FIELD ​

Type
craft\events\FieldEvent

The event that is triggered before a field is deleted.

EVENT_BEFORE_DELETE_FIELD_LAYOUT ​

Type
craft\events\FieldLayoutEvent

The event that is triggered before a field layout is deleted.

EVENT_BEFORE_SAVE_FIELD ​

Type
craft\events\FieldEvent

The event that is triggered before a field is saved.

EVENT_BEFORE_SAVE_FIELD_LAYOUT ​

Type
craft\events\FieldLayoutEvent

The event that is triggered before a field layout is saved.

EVENT_DEFINE_COMPATIBLE_FIELD_TYPES ​

Type
craft\events\DefineCompatibleFieldTypesEvent
Since
4.5.7

The event that is triggered when defining the compatible field types for a field.

See also getCompatibleFieldTypes()

EVENT_REGISTER_FIELD_TYPES ​

Type
craft\events\RegisterComponentTypesEvent

The event that is triggered when registering field types.

Field types must implement craft\base\FieldInterface. craft\base\Field provides a base implementation.

See Field Types for documentation on creating field types.

Example ​

php
use craft\events\RegisterComponentTypesEvent;
use craft\services\Fields;
use yii\base\Event;

Event::on(Fields::class,
    Fields::EVENT_REGISTER_FIELD_TYPES,
    function(RegisterComponentTypesEvent $event) {
        $event->types[] = MyFieldType::class;
    }
);

EVENT_REGISTER_NESTED_ENTRY_FIELD_TYPES ​

Type
craft\events\RegisterComponentTypesEvent
Since
5.0.0

The event that is triggered when registering field types which manage nested entries.

These field types must implement craft\base\ElementContainerFieldInterface.