SavableComponent

Type
Abstract Class
Namespace
craft\base
Inherits
craft\base\SavableComponent » craft\base\Component » craft\base\Model » yii\base\Model » yii\base\Component » yii\base\BaseObject
Implements
ArrayAccess, IteratorAggregate, craft\base\ComponentInterface, craft\base\SavableComponentInterface, yii\base\Arrayable, yii\base\Configurable, yii\base\StaticInstanceInterface
Uses traits
craft\base\ClonefixTrait, craft\base\SavableComponentTrait, yii\base\ArrayableTrait, yii\base\StaticInstanceTrait
Extended by
craft\base\ElementAction, craft\base\Field, craft\base\FlysystemVolume, craft\base\Volume, craft\base\Widget, craft\elements\actions\CopyReferenceTag, craft\elements\actions\Delete, craft\elements\actions\DeleteAssets, craft\elements\actions\DeleteUsers, craft\elements\actions\DownloadAssetFile, craft\elements\actions\Edit, craft\elements\actions\EditImage, craft\elements\actions\NewChild, craft\elements\actions\PreviewAsset, craft\elements\actions\RenameFile, craft\elements\actions\ReplaceFile, craft\elements\actions\SetStatus, craft\elements\actions\SuspendUsers, craft\elements\actions\UnsuspendUsers, craft\elements\actions\View, craft\fields\BaseOptionsField, craft\fields\Checkboxes, craft\fields\Color, craft\fields\Date, craft\fields\Dropdown, craft\fields\Email, craft\fields\Lightswitch, craft\fields\Matrix, craft\fields\MissingField, craft\fields\MultiSelect, craft\fields\Number, craft\fields\PlainText, craft\fields\RadioButtons, craft\fields\Table, craft\fields\Url, craft\mail\transportadapters\BaseTransportAdapter, craft\mail\transportadapters\Gmail, craft\mail\transportadapters\Sendmail, craft\mail\transportadapters\Smtp, craft\volumes\Local, craft\volumes\MissingVolume, craft\volumes\Temp, craft\widgets\CraftSupport, craft\widgets\Feed, craft\widgets\MissingWidget, craft\widgets\NewUsers, craft\widgets\QuickPost, craft\widgets\RecentEntries, craft\widgets\Updates
Since
3.0

SavableComponent is the base class for classes representing savable Craft components in terms of objects.

View source

Public Properties

PropertyDescription
$activeValidatorsyii\validators\Validator – The validators applicable to the current $scenario.
$attributesarray – Attribute values (name => value).
$behaviorsyii\base\Behavior – List of behaviors attached to this component
$dateCreatedDateTime, null – The date that the component was created
$dateUpdatedDateTime, null – The date that the component was last updated
$errorsarray – Errors for all attributes or the specified attribute.
$firstErrorsarray – The first errors.
$idinteger, string, null – The component’s ID (could be a temporary one: "new:X")
$isNewboolean – Whether the component is new
$iteratorArrayIterator – An iterator for traversing the items in the list.
$scenariostring – The scenario that this model is in.
$settingsarray – The component’s settings.
$settingsHtmlstring, null
$validatorsArrayObject, yii\validators\Validator – All the validators declared in the model.

$isNew

Type
boolean
Access
Read-only

Whether the component is new

View source

Signature

public boolean getIsNew ( )

$settings

Type
array
Access
Read-only

The component’s settings.

View source

Signature

public array getSettings ( )

$settingsHtml

Type
string, null
Access
Read-only

View source

Signature

public string, null getSettingsHtml ( )

Public Methods

MethodDescription
__call()Calls the named method which is not a class method.
__clone()
__construct()Constructor.
__get()Returns the value of an object property.
__isset()Checks if a property is set, i.e. defined and not null.
__set()Sets value of an object property.
__unset()Sets an object property to null.
activeAttributes()Returns the attribute names that are subject to validation in the current scenario.
addError()Adds a new error to the specified attribute.
addErrors()Adds a list of errors.
addModelErrors()Adds errors from another model, with a given attribute name prefix.
afterDelete()Performs actions after a component is deleted.
afterSave()Performs actions after a component is saved.
afterValidate()This method is invoked after validation ends.
attachBehavior()Attaches a behavior to this component.
attachBehaviors()Attaches a list of behaviors to the component.
attributeHints()Returns the attribute hints.
attributeLabels()Returns the attribute labels.
attributes()Returns the list of attribute names.
beforeDelete()Performs actions before a component is deleted.
beforeSave()Performs actions before a component is saved.
beforeValidate()This method is invoked before validation starts.
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.
clearErrors()Removes errors for all attributes or a single attribute.
createValidators()Creates validator objects based on the validation rules specified in rules().
datetimeAttributes()Returns the names of any attributes that should hold DateTime values.
detachBehavior()Detaches a behavior from the component.
detachBehaviors()Detaches all behaviors from the component.
displayName()Returns the display name of this class.
ensureBehaviors()Makes sure that the behaviors declared in behaviors() are attached to this component.
extraFields()Returns the list of fields that can be expanded further and returned by toArray().
fields()Returns the list of fields that should be returned by default by toArray() when no specific fields are specified.
formName()Returns the form name that this model class should use.
generateAttributeLabel()Generates a user friendly attribute label based on the give attribute name.
getActiveValidators()Returns the validators applicable to the current $scenario.
getAttributeHint()Returns the text hint for the specified attribute.
getAttributeLabel()Returns the text label for the specified attribute.
getAttributes()Returns attribute values.
getBehavior()Returns the named behavior object.
getBehaviors()Returns all behaviors attached to this component.
getError()Returns the first error of the specified attribute.
getErrorSummary()Returns the errors for all attributes as a one-dimensional array.
getErrors()Returns the errors for all attributes or a single attribute.
getFirstError()Returns the first error of the specified attribute.
getFirstErrors()Returns the first error of every attribute in the model.
getIsNew()Returns whether the component is new (unsaved).
getIterator()Returns an iterator for traversing the attributes in the model.
getScenario()Returns the scenario that this model is used in.
getSettings()Returns an array of the component’s settings.
getSettingsHtml()Returns the component’s settings HTML.
getValidators()Returns all the validators declared in rules().
hasErrors()Returns a value indicating whether there is any validation error.
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.
init()Initializes the object.
instance()Returns static class instance, which can be used to obtain meta information.
isAttributeActive()Returns a value indicating whether the attribute is active in the current scenario.
isAttributeRequired()Returns a value indicating whether the attribute is required.
isAttributeSafe()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()Populates the model with input data.
loadMultiple()Populates a set of models with the data from end user.
off()Detaches an existing event handler from this component.
offsetExists()Returns whether there is an element at the specified offset.
offsetGet()Returns the element at the specified offset.
offsetSet()Sets the element at the specified offset.
offsetUnset()Sets the element value at the specified offset to null.
on()Attaches an event handler to an event.
onUnsafeAttribute()This method is invoked when an unsafe attribute is being massively assigned.
rules()Returns the validation rules for attributes.
safeAttributes()Returns the attribute names that are safe to be massively assigned in the current scenario.
scenarios()Returns a list of scenarios and the corresponding active attributes.
setAttributes()Sets the attribute values in a massive way.
setScenario()Sets the scenario for the model.
settingsAttributes()Returns the list of settings attribute names.
toArray()Converts the model into an array.
trigger()Triggers an event.
validate()Validates the component.
validateMultiple()Validates multiple models.

afterDelete()

Performs actions after a component is deleted.

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Signature

public void afterDelete ( )

afterSave()

Performs actions after a component is saved.

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Arguments

  • $isNew (boolean) – Whether the component is brand new

Signature

public void afterSave ( \craft\base\bool $isNew )

beforeDelete()

Performs actions before a component is deleted.

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Returns

boolean – Whether the component should be deleted

Signature

public boolean beforeDelete ( )

beforeSave()

Performs actions before a component is saved.

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Arguments

  • $isNew (boolean) – Whether the component is brand new

Returns

boolean – Whether the component should be saved

Signature

public boolean beforeSave ( \craft\base\bool $isNew )

getIsNew()

Returns whether the component is new (unsaved).

View source

Returns

boolean – Whether the component is new

Signature

public boolean getIsNew ( )

getSettings()

Returns an array of the component’s settings.

View source

Returns

array – The component’s settings.

Signature

public array getSettings ( )

getSettingsHtml()

Returns the component’s settings HTML.

An extremely simple implementation would be to directly return some HTML:

return '<textarea name="foo">'.$this->foo.'</textarea>';

For more complex settings, you might prefer to create a template, and render it via craft\web\View::renderTemplate(). For example, the following code would render a template located at src/templates/_settings.html, passing the settings to it:

return Craft::$app->view->renderTemplate('plugin-handle/_widget-settings', [
    'widget' => $this
]);

If you need to tie any JavaScript code to your settings, it’s important to know that any name= and id= attributes within the returned HTML will probably get namespaced, however your JavaScript code will be left untouched. For example, if getSettingsHtml() returns the following HTML:

<textarea id="foo" name="foo"></textarea>
<script type="text/javascript">
    var textarea = document.getElementById('foo');
</script>

…then it might actually look like this before getting output to the browser:

<textarea id="namespace-foo" name="namespace[foo]"></textarea>
<script type="text/javascript">
    var textarea = document.getElementById('foo');
</script>

As you can see, that JavaScript code will not be able to find the textarea, because the textarea’s id= attribute was changed from foo to namespace-foo. Before you start adding namespace- to the beginning of your element ID selectors, keep in mind that the actual namespace is going to change depending on the context. Often they are randomly generated. So it’s not quite that simple.

Thankfully, craft\web\View service provides a couple handy methods that can help you deal with this:

So here’s what a getSettingsHtml() method that includes field-targeting JavaScript code might look like:

public function getSettingsHtml()
{
    // Come up with an ID value for 'foo'
    $id = Craft::$app->getView()->formatInputId('foo');
    // Figure out what that ID is going to be namespaced into
    $namespacedId = Craft::$app->view->namespaceInputId($id);
    // Render and return the input template
    return Craft::$app->view->renderTemplate('plugin-handle/_widget-settings', [
        'id'           => $id,
        'namespacedId' => $namespacedId,
        'widget'       => $this
    ]);
}

And the _widget-settings.twig template might look like this:

<textarea id="{{ id }}" name="foo">{{ widget.foo }}</textarea>
<script type="text/javascript">
    var textarea = document.getElementById('{{ namespacedId }}');
</script>

The same principles also apply if you’re including your JavaScript code with craft\web\View::registerJs().

View source

Returns

string, null

Signature

public string, null getSettingsHtml ( )

isSelectable()

Returns whether the component should be selectable in component Type selects.

View source

Returns

boolean – Whether the component should be selectable in component Type selects.

Signature

public static boolean isSelectable ( )

settingsAttributes()

Returns the list of settings attribute names.

By default, this method returns all public non-static properties that were defined on the called class. You may override this method to change the default behavior.

View source

Returns

array – The list of settings attribute names

Signature

public array settingsAttributes ( )

Protected Methods

MethodDescription
extractFieldsFor()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()Extracts the root field names from nested fields.
resolveFields()Determines which fields can be returned by toArray().

Constants

ConstantDescription
SCENARIO_DEFAULTThe name of the default scenario.

Events

EVENT_AFTER_DELETE

Type
yii\base\Event

The event that is triggered after the component is deleted

EVENT_AFTER_SAVE

Type
craft\events\ModelEvent

The event that is triggered after the component is saved

EVENT_BEFORE_DELETE

Type
craft\events\ModelEvent

The event that is triggered before the component is deleted You may set craft\events\ModelEvent::$isValid to false to prevent the component from getting deleted.

EVENT_BEFORE_SAVE

Type
craft\events\ModelEvent

The event that is triggered before the component is saved You may set craft\events\ModelEvent::$isValid to false to prevent the component from getting saved.