Class yii\validators\RequiredValidator

Inheritanceyii\validators\RequiredValidator » yii\validators\Validator » yii\base\Component » yii\base\BaseObject
Implementsyii\base\Configurable
Available since version2.0
Source Code https://github.com/yiisoft/yii2/blob/master/framework/validators/RequiredValidator.php

RequiredValidator validates that the specified attribute does not have null or empty value.

Public Properties

Hide inherited properties

PropertyTypeDescriptionDefined By
$attributes array|string Attributes to be validated by this validator. yii\validators\Validator
$builtInValidators array List of built-in validators (name => class or configuration) yii\validators\Validator
$enableClientValidation boolean Whether to enable client-side validation for this validator. yii\validators\Validator
$except array|string Scenarios that the validator should not be applied to. yii\validators\Validator
$isEmpty callable A PHP callable that replaces the default implementation of isEmpty(). yii\validators\Validator
$message string The user-defined error message. yii\validators\RequiredValidator
$on array|string Scenarios that the validator can be applied to. yii\validators\Validator
$requiredValue mixed The desired value that the attribute must have. yii\validators\RequiredValidator
$skipOnEmpty boolean Whether to skip this validator if the value being validated is empty. yii\validators\RequiredValidator
$skipOnError boolean Whether this validation rule should be skipped if the attribute being validated already has some validation error according to some previous rules. yii\validators\Validator
$strict boolean Whether the comparison between the attribute value and $requiredValue is strict. yii\validators\RequiredValidator
$when callable A PHP callable whose return value determines whether this validator should be applied. yii\validators\Validator
$whenClient string A JavaScript function name whose return value determines whether this validator should be applied on the client-side. yii\validators\Validator

Public Methods

Hide inherited methods

MethodDescriptionDefined By
__call() Calls the named method which is not a class method. yii\base\Component
__clone() This method is called after the object is created by cloning an existing one. yii\base\Component
__construct() Constructor. yii\base\BaseObject
__get() Returns the value of a component property. yii\base\Component
__isset() Checks if a property is set, i.e. defined and not null. yii\base\Component
__set() Sets the value of a component property. yii\base\Component
__unset() Sets a component property to be null. yii\base\Component
addError() Adds an error about the specified attribute to the model object. yii\validators\Validator
attachBehavior() Attaches a behavior to this component. yii\base\Component
attachBehaviors() Attaches a list of behaviors to the component. yii\base\Component
behaviors() Returns a list of behaviors that this component should behave as. yii\base\Component
canGetProperty() Returns a value indicating whether a property can be read. yii\base\Component
canSetProperty() Returns a value indicating whether a property can be set. yii\base\Component
className() Returns the fully qualified name of this class. yii\base\BaseObject
clientValidateAttribute() {@inheritdoc} yii\validators\RequiredValidator
createValidator() Creates a validator object. yii\validators\Validator
detachBehavior() Detaches a behavior from the component. yii\base\Component
detachBehaviors() Detaches all behaviors from the component. yii\base\Component
ensureBehaviors() Makes sure that the behaviors declared in behaviors() are attached to this component. yii\base\Component
getAttributeNames() Returns cleaned attribute names without the ! character at the beginning. yii\validators\Validator
getBehavior() Returns the named behavior object. yii\base\Component
getBehaviors() Returns all behaviors attached to this component. yii\base\Component
getClientOptions() {@inheritdoc} yii\validators\RequiredValidator
getValidationAttributes() Returns a list of attributes this validator applies to. yii\validators\Validator
hasEventHandlers() Returns a value indicating whether there is any handler attached to the named event. yii\base\Component
hasMethod() Returns a value indicating whether a method is defined. yii\base\Component
hasProperty() Returns a value indicating whether a property is defined for this component. yii\base\Component
init() {@inheritdoc} yii\validators\RequiredValidator
isActive() Returns a value indicating whether the validator is active for the given scenario and attribute. yii\validators\Validator
isEmpty() Checks if the given value is empty. yii\validators\Validator
off() Detaches an existing event handler from this component. yii\base\Component
on() Attaches an event handler to an event. yii\base\Component
trigger() Triggers an event. yii\base\Component
validate() Validates a given value. yii\validators\Validator
validateAttribute() Validates a single attribute. yii\validators\Validator
validateAttributes() Validates the specified object. yii\validators\Validator

Protected Methods

Hide inherited methods

MethodDescriptionDefined By
formatMessage() Formats a mesage using the I18N, or simple strtr if \Yii::$app is not available. yii\validators\Validator
validateValue() {@inheritdoc} yii\validators\RequiredValidator

Property Details

$message public property

The user-defined error message. It may contain the following placeholders which will be replaced accordingly by the validator:

  • {attribute}: the label of the attribute being validated
  • {value}: the value of the attribute being validated
  • {requiredValue}: the value of $requiredValue
public string $message null
$requiredValue public property

The desired value that the attribute must have. If this is null, the validator will validate that the specified attribute is not empty. If this is set as a value that is not null, the validator will validate that the attribute has a value that is the same as this property value. Defaults to null.

See also $strict.

public mixed $requiredValue null
$skipOnEmpty public property

Whether to skip this validator if the value being validated is empty.

public boolean $skipOnEmpty false
$strict public property

Whether the comparison between the attribute value and $requiredValue is strict. When this is true, both the values and types must match. Defaults to false, meaning only the values need to match.

Note that behavior for when $requiredValue is null is the following:

  • In strict mode, the validator will check if the attribute value is null
  • In non-strict mode validation will fail
public boolean $strict false

Method Details

clientValidateAttribute() public method

{@inheritdoc}

public void clientValidateAttribute ( $model, $attribute, $view )
$model
$attribute
$view
getClientOptions() public method

{@inheritdoc}

public void getClientOptions ( $model, $attribute )
$model
$attribute
init() public method

{@inheritdoc}

public void init ( )
validateValue() protected method

{@inheritdoc}

protected void validateValue ( $value )
$value