Component
- Type
- Abstract Class
- Namespace
- craft\base
- Inherits
- craft\base\Component » craft\base\Model » yii\base\Model (opens new window) » yii\base\Component (opens new window) » yii\base\BaseObject (opens new window)
- Implements
- ArrayAccess (opens new window), IteratorAggregate (opens new window), craft\base\ComponentInterface, craft\base\ModelInterface, yii\base\Arrayable (opens new window), yii\base\Configurable (opens new window), yii\base\StaticInstanceInterface (opens new window)
- Uses traits
- craft\base\ClonefixTrait, yii\base\ArrayableTrait (opens new window), yii\base\StaticInstanceTrait (opens new window)
- Extended by
- craft\assetpreviews\Image, craft\assetpreviews\Pdf, craft\assetpreviews\Text, craft\assetpreviews\Video, craft\base\AssetPreviewHandler, craft\base\ConfigurableComponent, craft\base\Element, craft\base\ElementAction, craft\base\ElementExporter, craft\base\Field, craft\base\Fs, craft\base\SavableComponent, craft\base\Utility, craft\base\Widget, craft\base\conditions\BaseCondition, craft\base\conditions\BaseConditionRule, craft\base\conditions\BaseDateRangeConditionRule, craft\base\conditions\BaseElementSelectConditionRule, craft\base\conditions\BaseLightswitchConditionRule, craft\base\conditions\BaseMultiSelectConditionRule, craft\base\conditions\BaseNumberConditionRule, craft\base\conditions\BaseSelectConditionRule, craft\base\conditions\BaseTextConditionRule, craft\elements\Address, craft\elements\Asset, craft\elements\Category, craft\elements\Entry, craft\elements\GlobalSet, craft\elements\MatrixBlock, craft\elements\Tag, craft\elements\User, craft\elements\actions\CopyReferenceTag, craft\elements\actions\CopyUrl, craft\elements\actions\Delete, craft\elements\actions\DeleteAssets, craft\elements\actions\DeleteForSite, craft\elements\actions\DeleteUsers, craft\elements\actions\DownloadAssetFile, craft\elements\actions\Duplicate, craft\elements\actions\Edit, craft\elements\actions\EditImage, craft\elements\actions\MoveAssets, craft\elements\actions\NewChild, craft\elements\actions\NewSiblingAfter, craft\elements\actions\NewSiblingBefore, craft\elements\actions\PreviewAsset, craft\elements\actions\RenameFile, craft\elements\actions\ReplaceFile, craft\elements\actions\Restore, craft\elements\actions\SetStatus, craft\elements\actions\SuspendUsers, craft\elements\actions\UnsuspendUsers, craft\elements\actions\View, craft\elements\conditions\DateCreatedConditionRule, craft\elements\conditions\DateUpdatedConditionRule, craft\elements\conditions\ElementCondition, craft\elements\conditions\HasUrlConditionRule, craft\elements\conditions\IdConditionRule, craft\elements\conditions\LevelConditionRule, craft\elements\conditions\RelatedToConditionRule, craft\elements\conditions\SiteConditionRule, craft\elements\conditions\SlugConditionRule, craft\elements\conditions\StatusConditionRule, craft\elements\conditions\TitleConditionRule, craft\elements\conditions\UriConditionRule, craft\elements\conditions\addresses\AddressCondition, craft\elements\conditions\addresses\AdministrativeAreaConditionRule, craft\elements\conditions\addresses\CountryConditionRule, craft\elements\conditions\assets\AssetCondition, craft\elements\conditions\assets\DateModifiedConditionRule, craft\elements\conditions\assets\FileSizeConditionRule, craft\elements\conditions\assets\FileTypeConditionRule, craft\elements\conditions\assets\FilenameConditionRule, craft\elements\conditions\assets\HasAltConditionRule, craft\elements\conditions\assets\HeightConditionRule, craft\elements\conditions\assets\SavableConditionRule, craft\elements\conditions\assets\UploaderConditionRule, craft\elements\conditions\assets\ViewableConditionRule, craft\elements\conditions\assets\VolumeConditionRule, craft\elements\conditions\assets\WidthConditionRule, craft\elements\conditions\categories\CategoryCondition, craft\elements\conditions\categories\GroupConditionRule, craft\elements\conditions\entries\AuthorConditionRule, craft\elements\conditions\entries\AuthorGroupConditionRule, craft\elements\conditions\entries\EntryCondition, craft\elements\conditions\entries\ExpiryDateConditionRule, craft\elements\conditions\entries\PostDateConditionRule, craft\elements\conditions\entries\SavableConditionRule, craft\elements\conditions\entries\SectionConditionRule, craft\elements\conditions\entries\TypeConditionRule, craft\elements\conditions\entries\ViewableConditionRule, craft\elements\conditions\tags\GroupConditionRule, craft\elements\conditions\tags\TagCondition, craft\elements\conditions\users\AdminConditionRule, craft\elements\conditions\users\CredentialedConditionRule, craft\elements\conditions\users\EmailConditionRule, craft\elements\conditions\users\FirstNameConditionRule, craft\elements\conditions\users\GroupConditionRule, craft\elements\conditions\users\LastLoginDateConditionRule, craft\elements\conditions\users\LastNameConditionRule, craft\elements\conditions\users\UserCondition, craft\elements\conditions\users\UsernameConditionRule, craft\elements\exporters\Expanded, craft\elements\exporters\Raw, craft\fields\Assets, craft\fields\BaseOptionsField, craft\fields\BaseRelationField, craft\fields\Categories, craft\fields\Checkboxes, craft\fields\Color, craft\fields\Date, craft\fields\Dropdown, craft\fields\Email, craft\fields\Entries, craft\fields\Lightswitch, craft\fields\Matrix, craft\fields\MissingField, craft\fields\Money, craft\fields\MultiSelect, craft\fields\Number, craft\fields\PlainText, craft\fields\RadioButtons, craft\fields\Table, craft\fields\Tags, craft\fields\Time, craft\fields\Url, craft\fields\Users, craft\fields\conditions\DateFieldConditionRule, craft\fields\conditions\EmptyFieldConditionRule, craft\fields\conditions\LightswitchFieldConditionRule, craft\fields\conditions\NumberFieldConditionRule, craft\fields\conditions\OptionsFieldConditionRule, craft\fields\conditions\RelationalFieldConditionRule, craft\fields\conditions\TextFieldConditionRule, craft\fs\Local, craft\fs\MissingFs, craft\fs\Temp, craft\gql\ArgumentManager, craft\gql\ElementQueryConditionBuilder, craft\gql\TypeManager, craft\gql\base\ElementMutationResolver, craft\gql\base\MutationResolver, craft\gql\resolvers\mutations\Asset, craft\gql\resolvers\mutations\Category, craft\gql\resolvers\mutations\Entry, craft\gql\resolvers\mutations\GlobalSet, craft\gql\resolvers\mutations\Tag, craft\imagetransforms\FallbackTransformer, craft\imagetransforms\ImageTransformer, craft\mail\transportadapters\BaseTransportAdapter, craft\mail\transportadapters\Gmail, craft\mail\transportadapters\Sendmail, craft\mail\transportadapters\Smtp, craft\test\mockclasses\components\ComponentExample, craft\test\mockclasses\components\DependencyHeavyComponentExample, craft\test\mockclasses\components\EventTriggeringComponent, craft\test\mockclasses\components\ExtendedComponentExample, craft\test\mockclasses\elements\ExampleElement, craft\utilities\AssetIndexes, craft\utilities\ClearCaches, craft\utilities\DbBackup, craft\utilities\DeprecationErrors, craft\utilities\FindAndReplace, craft\utilities\Migrations, craft\utilities\PhpInfo, craft\utilities\ProjectConfig, craft\utilities\QueueManager, craft\utilities\SystemMessages, craft\utilities\SystemReport, craft\utilities\Updates, craft\utilities\Upgrade, craft\widgets\CraftSupport, craft\widgets\Feed, craft\widgets\MissingWidget, craft\widgets\MyDrafts, craft\widgets\NewUsers, craft\widgets\QuickPost, craft\widgets\RecentEntries, craft\widgets\Updates
- Since
- 3.0.0
Component is the base class for classes representing Craft components in terms of objects.
View source (opens new window)
# Public Properties
| Property | Description |
|---|---|
| activeValidators (opens new window) | yii\validators\Validator (opens new window) – The validators applicable to the current scenario (opens new window). |
| attributes (opens new window) | array (opens new window) – Attribute values (name => value). |
| behaviors (opens new window) | yii\base\Behavior (opens new window) – List of behaviors attached to this component. |
| errors (opens new window) | array (opens new window) – Errors for all attributes or the specified attribute. |
| firstErrors (opens new window) | array (opens new window) – The first errors. |
| iterator (opens new window) | ArrayIterator (opens new window) – An iterator for traversing the items in the list. |
| scenario (opens new window) | string (opens new window) – The scenario that this model is in. |
| validators (opens new window) | ArrayObject (opens new window), yii\validators\Validator (opens new window) – All the validators declared in the model. |
# Public Methods
| Method | Description |
|---|---|
| __call() (opens new window) | Calls the named method which is not a class method. |
| __clone() | |
| __construct() | |
| __get() (opens new window) | Returns the value of a component property. |
| __isset() (opens new window) | Checks if a property is set, i.e. defined and not null. |
| __set() (opens new window) | Sets the value of a component property. |
| __unset() (opens new window) | Sets a component property to be null. |
| activeAttributes() (opens new window) | Returns the attribute names that are subject to validation in the current scenario. |
| addError() (opens new window) | Adds a new error to the specified attribute. |
| addErrors() (opens new window) | Adds a list of errors. |
| addModelErrors() | Adds errors from another model, with a given attribute name prefix. |
| afterValidate() (opens new window) | This method is invoked after validation ends. |
| attachBehavior() (opens new window) | Attaches a behavior to this component. |
| attachBehaviors() (opens new window) | Attaches a list of behaviors to the component. |
| attributeHints() (opens new window) | Returns the attribute hints. |
| attributeLabels() (opens new window) | Returns the attribute labels. |
| attributes() (opens new window) | Returns the list of attribute names. |
| beforeValidate() (opens new window) | This method is invoked before validation starts. |
| behaviors() | 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. |
| clearErrors() (opens new window) | Removes errors for all attributes or a single attribute. |
| createValidators() (opens new window) | Creates validator objects based on the validation rules specified in rules() (opens new window). |
| datetimeAttributes() | Returns the names of any attributes that should hold DateTime (opens new window) values. |
| detachBehavior() (opens new window) | Detaches a behavior from the component. |
| detachBehaviors() (opens new window) | Detaches all behaviors from the component. |
| displayName() | Returns the display name of this class. |
| ensureBehaviors() (opens new window) | Makes sure that the behaviors declared in behaviors() (opens new window) are attached to this component. |
| extraFields() (opens new window) | Returns the list of fields that can be expanded further and returned by toArray() (opens new window). |
| fields() (opens new window) | Returns the list of fields that should be returned by default by toArray() (opens new window) when no specific fields are specified. |
| formName() (opens new window) | Returns the form name that this model class should use. |
| generateAttributeLabel() (opens new window) | Generates a user friendly attribute label based on the give attribute name. |
| getActiveValidators() (opens new window) | Returns the validators applicable to the current scenario (opens new window). |
| getAttributeHint() (opens new window) | Returns the text hint for the specified attribute. |
| getAttributeLabel() (opens new window) | Returns the text label for the specified attribute. |
| getAttributes() (opens new window) | Returns attribute values. |
| getBehavior() (opens new window) | Returns the named behavior object. |
| getBehaviors() (opens new window) | Returns all behaviors attached to this component. |
| getErrorSummary() (opens new window) | Returns the errors for all attributes as a one-dimensional array. |
| getErrors() (opens new window) | Returns the errors for all attributes or a single attribute. |
| getFirstError() (opens new window) | Returns the first error of the specified attribute. |
| getFirstErrors() (opens new window) | Returns the first error of every attribute in the model. |
| getIterator() (opens new window) | Returns an iterator for traversing the attributes in the model. |
| getScenario() (opens new window) | Returns the scenario that this model is used in. |
| getValidators() (opens new window) | Returns all the validators declared in rules() (opens new window). |
| hasErrors() | Returns a value indicating whether there is any validation error. |
| 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 for this component. |
| init() | Initializes the object. |
| instance() (opens new window) | Returns static class instance, which can be used to obtain meta information. |
| isAttributeActive() (opens new window) | Returns a value indicating whether the attribute is active in the current scenario. |
| isAttributeRequired() (opens new window) | Returns a value indicating whether the attribute is required. |
| isAttributeSafe() (opens new window) | Returns a value indicating whether the attribute is safe for massive assignments. |
| isSelectable() | Returns whether the component should be selectable in component Type selects. |
| load() (opens new window) | Populates the model with input data. |
| loadMultiple() (opens new window) | Populates a set of models with the data from end user. |
| off() (opens new window) | Detaches an existing event handler from this component. |
| offsetExists() (opens new window) | Returns whether there is an element at the specified offset. |
| offsetGet() (opens new window) | Returns the element at the specified offset. |
| offsetSet() (opens new window) | Sets the element at the specified offset. |
| offsetUnset() (opens new window) | Sets the element value at the specified offset to null. |
| on() (opens new window) | Attaches an event handler to an event. |
| onUnsafeAttribute() (opens new window) | This method is invoked when an unsafe attribute is being massively assigned. |
| rules() | Returns the validation rules for attributes. |
| safeAttributes() (opens new window) | Returns the attribute names that are safe to be massively assigned in the current scenario. |
| scenarios() (opens new window) | Returns a list of scenarios and the corresponding active attributes. |
| setAttributes() | Sets the attribute values in a massive way. |
| setScenario() (opens new window) | Sets the scenario for the model. |
| toArray() (opens new window) | Converts the model into an array. |
| trigger() (opens new window) | Triggers an event. |
| validate() (opens new window) | Performs the data validation. |
| validateMultiple() (opens new window) | Validates multiple models. |
# displayName()
Returns the display name of this class.
View source (opens new window)
Returns
string (opens new window) – The display name of this class.
# isSelectable()
- Since
- 3.5.0
Returns whether the component should be selectable in component Type selects.
View source (opens new window)
Returns
boolean (opens new window) – Whether the component should be selectable in component Type selects.
# Protected Methods
| Method | Description |
|---|---|
| defineBehaviors() | Returns the behaviors to attach to this class. |
| defineRules() | Returns the validation rules for attributes. |
| extractFieldsFor() (opens new window) | Extract nested fields from a fields collection for a given root field Nested fields are separated with dots (.). e.g: "item.id" The previous example would extract "id". |
| extractRootFields() (opens new window) | Extracts the root field names from nested fields. |
| resolveFields() (opens new window) | Determines which fields can be returned by toArray() (opens new window). |
# Constants
| Constant | Description |
|---|---|
SCENARIO_DEFAULT | The name of the default scenario. |