Fields

Type
Class
Namespace
craft\services
Inherits
craft\services\Fields » yii\base\Component (opens new window) » yii\base\BaseObject (opens new window)
Implements
yii\base\Configurable (opens new window)
Since
3.0.0

Fields service.

An instance of the Fields service is globally accessible in Craft via Craft::$app->fields.

View source (opens new window)

# Public Properties

Property Description
allFieldTypes string (opens new window)[] – The available field type classes
allFields craft\base\FieldInterface[] – The fields
allGroups craft\models\FieldGroup[] – The field groups
behaviors (opens new window) yii\base\Behavior (opens new window) – List of behaviors attached to this component
fieldTypesWithContent string (opens new window)[] – The field type classes
fieldsWithContent craft\base\FieldInterface[] – The fields
ignoreProjectConfigChanges boolean (opens new window) – Whether to ignore changes to the project config.
oldFieldColumnPrefix string (opens new window)

# allFieldTypes

Type
string (opens new window)[]
Default value
null
Access
Read-only

The available field type classes

View source (opens new window)

# allFields

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

The fields

View source (opens new window)

# allGroups

Type
craft\models\FieldGroup[]
Default value
null
Access
Read-only

The field groups

View source (opens new window)

# fieldTypesWithContent

Type
string (opens new window)[]
Default value
null
Access
Read-only

The field type classes

View source (opens new window)

# fieldsWithContent

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

The fields

View source (opens new window)

# ignoreProjectConfigChanges

DEPRECATED

Deprecated in 3.1.2. Use craft\services\ProjectConfig::$muteEvents instead.

Type
boolean (opens new window)
Default value
false

Whether to ignore changes to the project config.

View source (opens new window)

# oldFieldColumnPrefix

Type
string (opens new window)
Default value
'field_'

View source (opens new window)

# Public Methods

Method Description
__call() (opens new window) Calls the named method which is not a class method.
__clone() (opens new window) This method is called after the object is created by cloning an existing one.
__construct() (opens new window) Constructor.
__get() (opens new window) Returns the value of an object property.
__isset() (opens new window) Checks if a property is set, i.e. defined and not null.
__serialize() Serializer
__set() (opens new window) Sets value of an object property.
__unset() (opens new window) Sets an object property to null.
applyFieldDelete() Applies a field delete to the database.
applyFieldSave() Applies a field save to the database.
assembleLayout() Assembles a field layout.
assembleLayoutFromPost() Assembles a field layout from post data.
attachBehavior() (opens new window) Attaches a behavior to this component.
attachBehaviors() (opens new window) Attaches a list of behaviors to the component.
behaviors() (opens new window) Returns a list of behaviors that this component should behave as.
canGetProperty() (opens new window) Returns a value indicating whether a property can be read.
canSetProperty() (opens new window) Returns a value indicating whether a property can be set.
className() (opens new window) Returns the fully qualified name of this class.
createField() Creates a field with a given config.
createFieldConfig() Returns the field layout config for the given field.
createLayoutElement() Creates a field layout element instance from its config.
deleteField() Deletes a field.
deleteFieldById() Deletes a field by its ID.
deleteGroup() Deletes a field group.
deleteGroupById() Deletes a field group 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() (opens new window) Detaches a behavior from the component.
detachBehaviors() (opens new window) Detaches all behaviors from the component.
doesFieldWithHandleExist() Returns whether a field exists with a given handle and context.
ensureBehaviors() (opens new window) Makes sure that the behaviors declared in behaviors() (opens new window) are attached to this component.
getAllFieldTypes() Returns all available field type classes.
getAllFields() Returns all fields within a field context(s).
getAllGroups() Returns all field groups.
getBehavior() (opens new window) Returns the named behavior object.
getBehaviors() (opens new window) 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.
getFieldIdsByLayoutId() Returns the field IDs for a given layout ID.
getFieldIdsByLayoutIds() Returns the field IDs grouped by layout IDs, for a given set of layout IDs.
getFieldTypesWithContent() Returns all field types that have a column in the content table.
getFieldsByElementType() Returns all of the fields used by a given element type.
getFieldsByGroupId() Returns all the fields in a given group.
getFieldsByLayoutId() Returns the fields in a field layout, identified by its ID.
getFieldsWithContent() Returns all fields that have a column in the content table.
getGroupById() Returns a field group by its ID.
getGroupByUid() Returns a field group by its UID.
getLayoutById() Returns a field layout by its ID.
getLayoutByType() Returns a field layout by its associated element type.
getLayoutTabsById() Returns a layout's tabs by its ID.
getLayoutsByType() Returns all of the field layouts associated with a given element type.
handleChangedField() Handle field changes.
handleChangedGroup() Handle field group change
handleDeletedField() Handle a field getting deleted.
handleDeletedGroup() Handle field group getting deleted.
hasEventHandlers() (opens new window) Returns a value indicating whether there is any handler attached to the named event.
hasMethod() (opens new window) Returns a value indicating whether a method is defined.
hasProperty() (opens new window) Returns a value indicating whether a property is defined.
init() (opens new window) Initializes the object.
off() (opens new window) Detaches an existing event handler from this component.
on() (opens new window) 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.
saveGroup() Saves a field group.
saveLayout() Saves a field layout.
trigger() (opens new window) 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 (opens new window)

# applyFieldDelete()

Since
3.1.0

Applies a field delete to the database.

View source (opens new window)

Arguments

  • $fieldUid

Throws

# applyFieldSave()

Since
3.1.0

Applies a field save to the database.

View source (opens new window)

Arguments

# assembleLayout()

DEPRECATED

Deprecated in 3.5.0.

Assembles a field layout.

View source (opens new window)

Arguments

Returns

craft\models\FieldLayout – The field layout

# assembleLayoutFromPost()

Assembles a field layout from post data.

View source (opens new window)

Arguments

Returns

craft\models\FieldLayout – The field layout

Throws

# createField()

Creates a field with a given config.

View source (opens new window)

Arguments

  • $config (mixed) – The field’s class name, or its config, with a type value and optionally a settings value

Returns

craft\base\FieldInterface – The field

# createFieldConfig()

Since
3.1.0

Returns the field layout config for the given field.

View source (opens new window)

Arguments

Returns

array (opens new window)

# createLayoutElement()

Since
3.5.0

Creates a field layout element instance from its config.

View source (opens new window)

Arguments

Returns

craft\base\FieldLayoutElementInterface

Throws

# deleteField()

Deletes a field.

View source (opens new window)

Arguments

Returns

boolean (opens new window) – Whether the field was deleted successfully

Throws

# deleteFieldById()

Deletes a field by its ID.

View source (opens new window)

Arguments

Returns

boolean (opens new window) – Whether the field was deleted successfully

# deleteGroup()

Deletes a field group.

View source (opens new window)

Arguments

Returns

boolean (opens new window) – Whether the field group was deleted successfully

# deleteGroupById()

Deletes a field group by its ID.

View source (opens new window)

Arguments

Returns

boolean (opens new window) – Whether the field group was deleted successfully

# deleteLayout()

Deletes a field layout.

View source (opens new window)

Arguments

Returns

boolean (opens new window) – Whether the field layout was deleted successfully

# deleteLayoutById()

Deletes a field layout(s) by its ID.

View source (opens new window)

Arguments

Returns

boolean (opens new window) – Whether the field layout was deleted successfully

# deleteLayoutsByType()

Deletes field layouts associated with a given element type.

View source (opens new window)

Arguments

Returns

boolean (opens new window) – Whether the field layouts were deleted successfully

# doesFieldWithHandleExist()

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

View source (opens new window)

Arguments

Returns

boolean (opens new window) – Whether a field with that handle exists

# getAllFieldTypes()

Returns all available field type classes.

View source (opens new window)

Returns

string (opens new window)[] – The available field type classes

# getAllFields()

Returns all fields within a field context(s).

View source (opens new window)

Arguments

Returns

craft\base\FieldInterface[] – The fields

# getAllGroups()

Returns all field groups.

View source (opens new window)

Returns

craft\models\FieldGroup[] – The field groups

# getCompatibleFieldTypes()

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

View source (opens new window)

Arguments

Returns

string (opens new window)[] – The compatible field type classes

# getFieldByHandle()

Returns a field by its handle and optional context.

View source (opens new window)

Arguments

Returns

craft\base\FieldInterface, null (opens new window) – The field, or null if it doesn’t exist

Example

$body = Craft::$app->fields->getFieldByHandle('body');

# getFieldById()

Returns a field by its ID.

View source (opens new window)

Arguments

Returns

craft\base\FieldInterface, null (opens new window) – The field, or null if it doesn’t exist

# getFieldByUid()

Returns a field by its UID.

View source (opens new window)

Arguments

Returns

craft\base\FieldInterface, null (opens new window) – The field, or null if it doesn’t exist

# getFieldIdsByLayoutId()

Since
3.1.24

Returns the field IDs for a given layout ID.

View source (opens new window)

Arguments

Returns

integer (opens new window)[]

# getFieldIdsByLayoutIds()

Returns the field IDs grouped by layout IDs, for a given set of layout IDs.

View source (opens new window)

Arguments

Returns

array (opens new window)

# getFieldTypesWithContent()

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

View source (opens new window)

Returns

string (opens new window)[] – The field type classes

# getFieldsByElementType()

Returns all of the fields used by a given element type.

View source (opens new window)

Arguments

Returns

craft\base\FieldInterface[] – The fields

# getFieldsByGroupId()

Returns all the fields in a given group.

View source (opens new window)

Arguments

Returns

craft\base\FieldInterface[] – The fields

# getFieldsByLayoutId()

Returns the fields in a field layout, identified by its ID.

View source (opens new window)

Arguments

Returns

craft\base\FieldInterface[] – The fields

# getFieldsWithContent()

Returns all fields that have a column in the content table.

View source (opens new window)

Returns

craft\base\FieldInterface[] – The fields

# getGroupById()

Returns a field group by its ID.

View source (opens new window)

Arguments

Returns

craft\models\FieldGroup, null (opens new window) – The field group, or null if it doesn’t exist

# getGroupByUid()

Since
3.3.0

Returns a field group by its UID.

View source (opens new window)

Arguments

Returns

craft\models\FieldGroup, null (opens new window) – The field group, or null if it doesn’t exist

# getLayoutById()

Returns a field layout by its ID.

View source (opens new window)

Arguments

Returns

craft\models\FieldLayout, null (opens new window) – The field layout, or null if it doesn’t exist

# getLayoutByType()

Returns a field layout by its associated element type.

View source (opens new window)

Arguments

Returns

craft\models\FieldLayout – The field layout

# getLayoutTabsById()

Returns a layout's tabs by its ID.

View source (opens new window)

Arguments

Returns

craft\models\FieldLayoutTab[] – The field layout’s tabs

# getLayoutsByType()

Since
3.5.0

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

View source (opens new window)

Arguments

Returns

craft\models\FieldLayout[] – The field layouts

# handleChangedField()

Handle field changes.

View source (opens new window)

Arguments

Throws

# handleChangedGroup()

Handle field group change

View source (opens new window)

Arguments

# handleDeletedField()

Handle a field getting deleted.

View source (opens new window)

Arguments

# handleDeletedGroup()

Handle field group getting deleted.

View source (opens new window)

Arguments

# prepFieldForSave()

Since
3.1.2

Preps a field to be saved.

View source (opens new window)

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 (opens new window)

# restoreLayoutById()

Since
3.1.0

Restores a field layout by its ID.

View source (opens new window)

Arguments

Returns

boolean (opens new window) – Whether the layout was restored successfully

# saveField()

Saves a field.

View source (opens new window)

Arguments

Returns

boolean (opens new window) – Whether the field was saved successfully

Throws

# saveGroup()

Saves a field group.

View source (opens new window)

Arguments

Returns

boolean (opens new window) – Whether the field group was saved successfully

# saveLayout()

Saves a field layout.

View source (opens new window)

Arguments

Returns

boolean (opens new window) – 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 (opens new window)

# Constants

Constant Description
CONFIG_FIELDGROUP_KEY
CONFIG_FIELDS_KEY

# Events

# EVENT_AFTER_DELETE_FIELD

Type
craft\events\FieldEvent

The event that is triggered after a field is deleted.

# EVENT_AFTER_DELETE_FIELD_GROUP

Type
craft\events\FieldGroupEvent

The event that is triggered after a field group 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_GROUP

Type
craft\events\FieldGroupEvent

The event that is triggered after a field group 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_GROUP_DELETE

Type
craft\events\FieldGroupEvent
Since
3.1.0

The event that is triggered before a field group delete 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_GROUP

Type
craft\events\FieldGroupEvent

The event that is triggered before a field group 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_GROUP

Type
craft\events\FieldGroupEvent

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

# EVENT_BEFORE_SAVE_FIELD_LAYOUT

Type
craft\events\FieldLayoutEvent

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

# 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 (opens new window) for documentation on creating field types.

Example

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;
    }
);