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Class yii\validators\NumberValidator

Inheritanceyii\validators\NumberValidator » 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/NumberValidator.php

NumberValidator validates that the attribute value is a number.

The format of the number must match the regular expression specified in $integerPattern or $numberPattern. Optionally, you may configure the $max and $min properties to ensure the number is within certain range.

Public Properties

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Property Type Description Defined By
$allowArray boolean Whether to allow array type attribute. yii\validators\NumberValidator
$attributeNames array Attribute names. yii\validators\Validator
$attributes array|string Attributes to be validated by this validator. yii\validators\Validator
$behaviors yii\base\Behavior[] List of behaviors attached to this component. yii\base\Component
$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
$integerOnly boolean Whether the attribute value can only be an integer. yii\validators\NumberValidator
$integerPattern string The regular expression for matching integers. yii\validators\NumberValidator
$isEmpty callable|null A PHP callable that replaces the default implementation of isEmpty(). yii\validators\Validator
$max integer|float|null Upper limit of the number. yii\validators\NumberValidator
$message string|null The user-defined error message. yii\validators\Validator
$min integer|float|null Lower limit of the number. yii\validators\NumberValidator
$numberPattern string The regular expression for matching numbers. yii\validators\NumberValidator
$on array|string Scenarios that the validator can be applied to. yii\validators\Validator
$skipOnEmpty boolean Whether this validation rule should be skipped if the attribute value is null or an empty string. yii\validators\Validator
$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
$tooBig string User-defined error message used when the value is bigger than $max. yii\validators\NumberValidator
$tooSmall string User-defined error message used when the value is smaller than $min. yii\validators\NumberValidator
$validationAttributes array List of attribute names. yii\validators\Validator
$when callable|null A PHP callable whose return value determines whether this validator should be applied. yii\validators\Validator
$whenClient string|null A JavaScript function name whose return value determines whether this validator should be applied on the client-side. yii\validators\Validator

Public Methods

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Method Description Defined 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() Returns the JavaScript needed for performing client-side validation. yii\validators\NumberValidator
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() Returns the client-side validation options. yii\validators\NumberValidator
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() Initializes the object. yii\validators\NumberValidator
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\NumberValidator
validateAttributes() Validates the specified object. yii\validators\Validator

Protected Methods

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Method Description Defined By
formatMessage() Formats a mesage using the I18N, or simple strtr if \Yii::$app is not available. yii\validators\Validator
validateValue() Validates a value. yii\validators\NumberValidator

Property Details

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$allowArray public property (available since version 2.0.42)

Whether to allow array type attribute. Defaults to false.

public boolean $allowArray false
$integerOnly public property

Whether the attribute value can only be an integer. Defaults to false.

public boolean $integerOnly false
$integerPattern public property

The regular expression for matching integers.

public string $integerPattern '/^[+-]?\d+$/'
$max public property

Upper limit of the number. Defaults to null, meaning no upper limit.

See also $tooBig for the customized message used when the number is too big.

public integer|float|null $max null
$min public property

Lower limit of the number. Defaults to null, meaning no lower limit.

See also $tooSmall for the customized message used when the number is too small.

public integer|float|null $min null
$numberPattern public property

The regular expression for matching numbers. It defaults to a pattern that matches floating numbers with optional exponential part (e.g. -1.23e-10).

public string $numberPattern '/^[-+]?[0-9]*\.?[0-9]+([eE][-+]?[0-9]+)?$/'
$tooBig public property

User-defined error message used when the value is bigger than $max.

public string $tooBig null
$tooSmall public property

User-defined error message used when the value is smaller than $min.

public string $tooSmall null

Method Details

Hide inherited methods

__call() public method

Defined in: yii\base\Component::__call()

Calls the named method which is not a class method.

This method will check if any attached behavior has the named method and will execute it if available.

Do not call this method directly as it is a PHP magic method that will be implicitly called when an unknown method is being invoked.

public mixed __call ( $name, $params )
$name string

The method name

$params array

Method parameters

return mixed

The method return value

throws yii\base\UnknownMethodException

when calling unknown method

                public function __call($name, $params)
{
    $this->ensureBehaviors();
    foreach ($this->_behaviors as $object) {
        if ($object->hasMethod($name)) {
            return call_user_func_array([$object, $name], $params);
        }
    }
    throw new UnknownMethodException('Calling unknown method: ' . get_class($this) . "::$name()");
}

            
__clone() public method

Defined in: yii\base\Component::__clone()

This method is called after the object is created by cloning an existing one.

It removes all behaviors because they are attached to the old object.

public void __clone ( )

                public function __clone()
{
    $this->_events = [];
    $this->_eventWildcards = [];
    $this->_behaviors = null;
}

            
__construct() public method

Defined in: yii\base\BaseObject::__construct()

Constructor.

The default implementation does two things:

  • Initializes the object with the given configuration $config.
  • Call init().

If this method is overridden in a child class, it is recommended that

  • the last parameter of the constructor is a configuration array, like $config here.
  • call the parent implementation at the end of the constructor.
public void __construct ( $config = [] )
$config array

Name-value pairs that will be used to initialize the object properties

                public function __construct($config = [])
{
    if (!empty($config)) {
        Yii::configure($this, $config);
    }
    $this->init();
}

            
__get() public method

Defined in: yii\base\Component::__get()

Returns the value of a component property.

This method will check in the following order and act accordingly:

  • a property defined by a getter: return the getter result
  • a property of a behavior: return the behavior property value

Do not call this method directly as it is a PHP magic method that will be implicitly called when executing $value = $component->property;.

See also __set().

public mixed __get ( $name )
$name string

The property name

return mixed

The property value or the value of a behavior's property

throws yii\base\UnknownPropertyException

if the property is not defined

throws yii\base\InvalidCallException

if the property is write-only.

                public function __get($name)
{
    $getter = 'get' . $name;
    if (method_exists($this, $getter)) {
        // read property, e.g. getName()
        return $this->$getter();
    }
    // behavior property
    $this->ensureBehaviors();
    foreach ($this->_behaviors as $behavior) {
        if ($behavior->canGetProperty($name)) {
            return $behavior->$name;
        }
    }
    if (method_exists($this, 'set' . $name)) {
        throw new InvalidCallException('Getting write-only property: ' . get_class($this) . '::' . $name);
    }
    throw new UnknownPropertyException('Getting unknown property: ' . get_class($this) . '::' . $name);
}

            
__isset() public method

Defined in: yii\base\Component::__isset()

Checks if a property is set, i.e. defined and not null.

This method will check in the following order and act accordingly:

  • a property defined by a setter: return whether the property is set
  • a property of a behavior: return whether the property is set
  • return false for non existing properties

Do not call this method directly as it is a PHP magic method that will be implicitly called when executing isset($component->property).

See also https://www.php.net/manual/en/function.isset.php.

public boolean __isset ( $name )
$name string

The property name or the event name

return boolean

Whether the named property is set

                public function __isset($name)
{
    $getter = 'get' . $name;
    if (method_exists($this, $getter)) {
        return $this->$getter() !== null;
    }
    // behavior property
    $this->ensureBehaviors();
    foreach ($this->_behaviors as $behavior) {
        if ($behavior->canGetProperty($name)) {
            return $behavior->$name !== null;
        }
    }
    return false;
}

            
__set() public method

Defined in: yii\base\Component::__set()

Sets the value of a component property.

This method will check in the following order and act accordingly:

  • a property defined by a setter: set the property value
  • an event in the format of "on xyz": attach the handler to the event "xyz"
  • a behavior in the format of "as xyz": attach the behavior named as "xyz"
  • a property of a behavior: set the behavior property value

Do not call this method directly as it is a PHP magic method that will be implicitly called when executing $component->property = $value;.

See also __get().

public void __set ( $name, $value )
$name string

The property name or the event name

$value mixed

The property value

throws yii\base\UnknownPropertyException

if the property is not defined

throws yii\base\InvalidCallException

if the property is read-only.

                public function __set($name, $value)
{
    $setter = 'set' . $name;
    if (method_exists($this, $setter)) {
        // set property
        $this->$setter($value);
        return;
    } elseif (strncmp($name, 'on ', 3) === 0) {
        // on event: attach event handler
        $this->on(trim(substr($name, 3)), $value);
        return;
    } elseif (strncmp($name, 'as ', 3) === 0) {
        // as behavior: attach behavior
        $name = trim(substr($name, 3));
        $this->attachBehavior($name, $value instanceof Behavior ? $value : Yii::createObject($value));
        return;
    }
    // behavior property
    $this->ensureBehaviors();
    foreach ($this->_behaviors as $behavior) {
        if ($behavior->canSetProperty($name)) {
            $behavior->$name = $value;
            return;
        }
    }
    if (method_exists($this, 'get' . $name)) {
        throw new InvalidCallException('Setting read-only property: ' . get_class($this) . '::' . $name);
    }
    throw new UnknownPropertyException('Setting unknown property: ' . get_class($this) . '::' . $name);
}

            
__unset() public method

Defined in: yii\base\Component::__unset()

Sets a component property to be null.

This method will check in the following order and act accordingly:

  • a property defined by a setter: set the property value to be null
  • a property of a behavior: set the property value to be null

Do not call this method directly as it is a PHP magic method that will be implicitly called when executing unset($component->property).

See also https://www.php.net/manual/en/function.unset.php.

public void __unset ( $name )
$name string

The property name

throws yii\base\InvalidCallException

if the property is read only.

                public function __unset($name)
{
    $setter = 'set' . $name;
    if (method_exists($this, $setter)) {
        $this->$setter(null);
        return;
    }
    // behavior property
    $this->ensureBehaviors();
    foreach ($this->_behaviors as $behavior) {
        if ($behavior->canSetProperty($name)) {
            $behavior->$name = null;
            return;
        }
    }
    throw new InvalidCallException('Unsetting an unknown or read-only property: ' . get_class($this) . '::' . $name);
}

            
addError() public method

Defined in: yii\validators\Validator::addError()

Adds an error about the specified attribute to the model object.

This is a helper method that performs message selection and internationalization.

public void addError ( $model, $attribute, $message, $params = [] )
$model yii\base\Model

The data model being validated

$attribute string

The attribute being validated

$message string

The error message

$params array

Values for the placeholders in the error message

                public function addError($model, $attribute, $message, $params = [])
{
    $params['attribute'] = $model->getAttributeLabel($attribute);
    if (!isset($params['value'])) {
        $value = $model->$attribute;
        if (is_array($value)) {
            $params['value'] = 'array()';
        } elseif (is_object($value) && !method_exists($value, '__toString')) {
            $params['value'] = '(object)';
        } else {
            $params['value'] = $value;
        }
    }
    $model->addError($attribute, $this->formatMessage($message, $params));
}

            
attachBehavior() public method

Defined in: yii\base\Component::attachBehavior()

Attaches a behavior to this component.

This method will create the behavior object based on the given configuration. After that, the behavior object will be attached to this component by calling the yii\base\Behavior::attach() method.

See also detachBehavior().

public yii\base\Behavior attachBehavior ( $name, $behavior )
$name string

The name of the behavior.

$behavior string|array|yii\base\Behavior

The behavior configuration. This can be one of the following:

return yii\base\Behavior

The behavior object

                public function attachBehavior($name, $behavior)
{
    $this->ensureBehaviors();
    return $this->attachBehaviorInternal($name, $behavior);
}

            
attachBehaviors() public method

Defined in: yii\base\Component::attachBehaviors()

Attaches a list of behaviors to the component.

Each behavior is indexed by its name and should be a yii\base\Behavior object, a string specifying the behavior class, or an configuration array for creating the behavior.

See also attachBehavior().

public void attachBehaviors ( $behaviors )
$behaviors array

List of behaviors to be attached to the component

                public function attachBehaviors($behaviors)
{
    $this->ensureBehaviors();
    foreach ($behaviors as $name => $behavior) {
        $this->attachBehaviorInternal($name, $behavior);
    }
}

            
behaviors() public method

Defined in: yii\base\Component::behaviors()

Returns a list of behaviors that this component should behave as.

Child classes may override this method to specify the behaviors they want to behave as.

The return value of this method should be an array of behavior objects or configurations indexed by behavior names. A behavior configuration can be either a string specifying the behavior class or an array of the following structure:

'behaviorName' => [
    'class' => 'BehaviorClass',
    'property1' => 'value1',
    'property2' => 'value2',
]

Note that a behavior class must extend from yii\base\Behavior. Behaviors can be attached using a name or anonymously. When a name is used as the array key, using this name, the behavior can later be retrieved using getBehavior() or be detached using detachBehavior(). Anonymous behaviors can not be retrieved or detached.

Behaviors declared in this method will be attached to the component automatically (on demand).

public array behaviors ( )
return array

The behavior configurations.

                public function behaviors()
{
    return [];
}

            
canGetProperty() public method

Defined in: yii\base\Component::canGetProperty()

Returns a value indicating whether a property can be read.

A property can be read if:

  • the class has a getter method associated with the specified name (in this case, property name is case-insensitive);
  • the class has a member variable with the specified name (when $checkVars is true);
  • an attached behavior has a readable property of the given name (when $checkBehaviors is true).

See also canSetProperty().

public boolean canGetProperty ( $name, $checkVars true, $checkBehaviors true )
$name string

The property name

$checkVars boolean

Whether to treat member variables as properties

$checkBehaviors boolean

Whether to treat behaviors' properties as properties of this component

return boolean

Whether the property can be read

                public function canGetProperty($name, $checkVars = true, $checkBehaviors = true)
{
    if (method_exists($this, 'get' . $name) || $checkVars && property_exists($this, $name)) {
        return true;
    } elseif ($checkBehaviors) {
        $this->ensureBehaviors();
        foreach ($this->_behaviors as $behavior) {
            if ($behavior->canGetProperty($name, $checkVars)) {
                return true;
            }
        }
    }
    return false;
}

            
canSetProperty() public method

Defined in: yii\base\Component::canSetProperty()

Returns a value indicating whether a property can be set.

A property can be written if:

  • the class has a setter method associated with the specified name (in this case, property name is case-insensitive);
  • the class has a member variable with the specified name (when $checkVars is true);
  • an attached behavior has a writable property of the given name (when $checkBehaviors is true).

See also canGetProperty().

public boolean canSetProperty ( $name, $checkVars true, $checkBehaviors true )
$name string

The property name

$checkVars boolean

Whether to treat member variables as properties

$checkBehaviors boolean

Whether to treat behaviors' properties as properties of this component

return boolean

Whether the property can be written

                public function canSetProperty($name, $checkVars = true, $checkBehaviors = true)
{
    if (method_exists($this, 'set' . $name) || $checkVars && property_exists($this, $name)) {
        return true;
    } elseif ($checkBehaviors) {
        $this->ensureBehaviors();
        foreach ($this->_behaviors as $behavior) {
            if ($behavior->canSetProperty($name, $checkVars)) {
                return true;
            }
        }
    }
    return false;
}

            
className() public static method
Deprecated since 2.0.14. On PHP >=5.5, use ::class instead.

Defined in: yii\base\BaseObject::className()

Returns the fully qualified name of this class.

public static string className ( )
return string

The fully qualified name of this class.

                public static function className()
{
    return get_called_class();
}

            
clientValidateAttribute() public method

Returns the JavaScript needed for performing client-side validation.

Calls getClientOptions() to generate options array for client-side validation.

You may override this method to return the JavaScript validation code if the validator can support client-side validation.

The following JavaScript variables are predefined and can be used in the validation code:

  • attribute: an object describing the the attribute being validated.
  • value: the value being validated.
  • messages: an array used to hold the validation error messages for the attribute.
  • deferred: an array used to hold deferred objects for asynchronous validation
  • $form: a jQuery object containing the form element

The attribute object contains the following properties:

  • id: a unique ID identifying the attribute (e.g. "loginform-username") in the form
  • name: attribute name or expression (e.g. "[0]content" for tabular input)
  • container: the jQuery selector of the container of the input field
  • input: the jQuery selector of the input field under the context of the form
  • error: the jQuery selector of the error tag under the context of the container
  • status: status of the input field, 0: empty, not entered before, 1: validated, 2: pending validation, 3: validating
public string|null clientValidateAttribute ( $model, $attribute, $view )
$model yii\base\Model

The data model being validated

$attribute string

The name of the attribute to be validated.

$view yii\web\View

The view object that is going to be used to render views or view files containing a model form with this validator applied.

return string|null

The client-side validation script. Null if the validator does not support client-side validation.

                public function clientValidateAttribute($model, $attribute, $view)
{
    ValidationAsset::register($view);
    $options = $this->getClientOptions($model, $attribute);
    return 'yii.validation.number(value, messages, ' . Json::htmlEncode($options) . ');';
}

            
createValidator() public static method

Defined in: yii\validators\Validator::createValidator()

Creates a validator object.

public static yii\validators\Validator createValidator ( $type, $model, $attributes, $params = [] )
$type string|Closure

The validator type. This can be either:

  • a built-in validator name listed in $builtInValidators;
  • a method name of the model class;
  • an anonymous function;
  • a validator class name.
$model yii\base\Model

The data model to be validated.

$attributes array|string

List of attributes to be validated. This can be either an array of the attribute names or a string of comma-separated attribute names.

$params array

Initial values to be applied to the validator properties.

return yii\validators\Validator

The validator

                public static function createValidator($type, $model, $attributes, $params = [])
{
    $params['attributes'] = $attributes;
    if ($type instanceof \Closure) {
        $params['class'] = __NAMESPACE__ . '\InlineValidator';
        $params['method'] = $type;
    } elseif (!isset(static::$builtInValidators[$type]) && $model->hasMethod($type)) {
        // method-based validator
        $params['class'] = __NAMESPACE__ . '\InlineValidator';
        $params['method'] = [$model, $type];
    } else {
        unset($params['current']);
        if (isset(static::$builtInValidators[$type])) {
            $type = static::$builtInValidators[$type];
        }
        if (is_array($type)) {
            $params = array_merge($type, $params);
        } else {
            $params['class'] = $type;
        }
    }
    return Yii::createObject($params);
}

            
detachBehavior() public method

Defined in: yii\base\Component::detachBehavior()

Detaches a behavior from the component.

The behavior's yii\base\Behavior::detach() method will be invoked.

public yii\base\Behavior|null detachBehavior ( $name )
$name string

The behavior's name.

return yii\base\Behavior|null

The detached behavior. Null if the behavior does not exist.

                public function detachBehavior($name)
{
    $this->ensureBehaviors();
    if (isset($this->_behaviors[$name])) {
        $behavior = $this->_behaviors[$name];
        unset($this->_behaviors[$name]);
        $behavior->detach();
        return $behavior;
    }
    return null;
}

            
detachBehaviors() public method

Defined in: yii\base\Component::detachBehaviors()

Detaches all behaviors from the component.

public void detachBehaviors ( )

                public function detachBehaviors()
{
    $this->ensureBehaviors();
    foreach ($this->_behaviors as $name => $behavior) {
        $this->detachBehavior($name);
    }
}

            
ensureBehaviors() public method

Defined in: yii\base\Component::ensureBehaviors()

Makes sure that the behaviors declared in behaviors() are attached to this component.

public void ensureBehaviors ( )

                public function ensureBehaviors()
{
    if ($this->_behaviors === null) {
        $this->_behaviors = [];
        foreach ($this->behaviors() as $name => $behavior) {
            $this->attachBehaviorInternal($name, $behavior);
        }
    }
}

            
formatMessage() protected method (available since version 2.0.12)

Defined in: yii\validators\Validator::formatMessage()

Formats a mesage using the I18N, or simple strtr if \Yii::$app is not available.

protected string formatMessage ( $message, $params )
$message string
$params array

                protected function formatMessage($message, $params)
{
    if (Yii::$app !== null) {
        return \Yii::$app->getI18n()->format($message, $params, Yii::$app->language);
    }
    $placeholders = [];
    foreach ((array) $params as $name => $value) {
        $placeholders['{' . $name . '}'] = $value;
    }
    return ($placeholders === []) ? $message : strtr($message, $placeholders);
}

            
getAttributeNames() public method (available since version 2.0.12)

Defined in: yii\validators\Validator::getAttributeNames()

Returns cleaned attribute names without the ! character at the beginning.

public array getAttributeNames ( )
return array

Attribute names.

                public function getAttributeNames()
{
    return array_map(function ($attribute) {
        return ltrim($attribute, '!');
    }, $this->attributes);
}

            
getBehavior() public method

Defined in: yii\base\Component::getBehavior()

Returns the named behavior object.

public yii\base\Behavior|null getBehavior ( $name )
$name string

The behavior name

return yii\base\Behavior|null

The behavior object, or null if the behavior does not exist

                public function getBehavior($name)
{
    $this->ensureBehaviors();
    return isset($this->_behaviors[$name]) ? $this->_behaviors[$name] : null;
}

            
getBehaviors() public method

Defined in: yii\base\Component::getBehaviors()

Returns all behaviors attached to this component.

public yii\base\Behavior[] getBehaviors ( )
return yii\base\Behavior[]

List of behaviors attached to this component

                public function getBehaviors()
{
    $this->ensureBehaviors();
    return $this->_behaviors;
}

            
getClientOptions() public method (available since version 2.0.11)

Returns the client-side validation options.

This method is usually called from clientValidateAttribute(). You may override this method to modify options that will be passed to the client-side validation.

public array getClientOptions ( $model, $attribute )
$model yii\base\Model

The model being validated

$attribute string

The attribute name being validated

return array

The client-side validation options

                public function getClientOptions($model, $attribute)
{
    $label = $model->getAttributeLabel($attribute);
    $options = [
        'pattern' => new JsExpression($this->integerOnly ? $this->integerPattern : $this->numberPattern),
        'message' => $this->formatMessage($this->message, [
            'attribute' => $label,
        ]),
    ];
    if ($this->min !== null) {
        // ensure numeric value to make javascript comparison equal to PHP comparison
        // https://github.com/yiisoft/yii2/issues/3118
        $options['min'] = is_string($this->min) ? (float) $this->min : $this->min;
        $options['tooSmall'] = $this->formatMessage($this->tooSmall, [
            'attribute' => $label,
            'min' => $this->min,
        ]);
    }
    if ($this->max !== null) {
        // ensure numeric value to make javascript comparison equal to PHP comparison
        // https://github.com/yiisoft/yii2/issues/3118
        $options['max'] = is_string($this->max) ? (float) $this->max : $this->max;
        $options['tooBig'] = $this->formatMessage($this->tooBig, [
            'attribute' => $label,
            'max' => $this->max,
        ]);
    }
    if ($this->skipOnEmpty) {
        $options['skipOnEmpty'] = 1;
    }
    return $options;
}

            
getValidationAttributes() public method (available since version 2.0.16)

Defined in: yii\validators\Validator::getValidationAttributes()

Returns a list of attributes this validator applies to.

public array|null getValidationAttributes ( $attributes null )
$attributes array|string|null

The list of attributes to be validated.

return array|null

List of attribute names.

                public function getValidationAttributes($attributes = null)
{
    if ($attributes === null) {
        return $this->getAttributeNames();
    }
    if (is_scalar($attributes)) {
        $attributes = [$attributes];
    }
    $newAttributes = [];
    $attributeNames = $this->getAttributeNames();
    foreach ($attributes as $attribute) {
        // do not strict compare, otherwise int attributes would fail due to to string conversion in getAttributeNames() using ltrim().
        if (in_array($attribute, $attributeNames, false)) {
            $newAttributes[] = $attribute;
        }
    }
    return $newAttributes;
}

            
hasEventHandlers() public method

Defined in: yii\base\Component::hasEventHandlers()

Returns a value indicating whether there is any handler attached to the named event.

public boolean hasEventHandlers ( $name )
$name string

The event name

return boolean

Whether there is any handler attached to the event.

                public function hasEventHandlers($name)
{
    $this->ensureBehaviors();
    if (!empty($this->_events[$name])) {
        return true;
    }
    foreach ($this->_eventWildcards as $wildcard => $handlers) {
        if (!empty($handlers) && StringHelper::matchWildcard($wildcard, $name)) {
            return true;
        }
    }
    return Event::hasHandlers($this, $name);
}

            
hasMethod() public method

Defined in: yii\base\Component::hasMethod()

Returns a value indicating whether a method is defined.

A method is defined if:

  • the class has a method with the specified name
  • an attached behavior has a method with the given name (when $checkBehaviors is true).
public boolean hasMethod ( $name, $checkBehaviors true )
$name string

The property name

$checkBehaviors boolean

Whether to treat behaviors' methods as methods of this component

return boolean

Whether the method is defined

                public function hasMethod($name, $checkBehaviors = true)
{
    if (method_exists($this, $name)) {
        return true;
    } elseif ($checkBehaviors) {
        $this->ensureBehaviors();
        foreach ($this->_behaviors as $behavior) {
            if ($behavior->hasMethod($name)) {
                return true;
            }
        }
    }
    return false;
}

            
hasProperty() public method

Defined in: yii\base\Component::hasProperty()

Returns a value indicating whether a property is defined for this component.

A property is defined if:

  • the class has a getter or setter method associated with the specified name (in this case, property name is case-insensitive);
  • the class has a member variable with the specified name (when $checkVars is true);
  • an attached behavior has a property of the given name (when $checkBehaviors is true).

See also:

public boolean hasProperty ( $name, $checkVars true, $checkBehaviors true )
$name string

The property name

$checkVars boolean

Whether to treat member variables as properties

$checkBehaviors boolean

Whether to treat behaviors' properties as properties of this component

return boolean

Whether the property is defined

                public function hasProperty($name, $checkVars = true, $checkBehaviors = true)
{
    return $this->canGetProperty($name, $checkVars, $checkBehaviors) || $this->canSetProperty($name, false, $checkBehaviors);
}

            
init() public method

Initializes the object.

This method is invoked at the end of the constructor after the object is initialized with the given configuration.

public void init ( )

                public function init()
{
    parent::init();
    if ($this->message === null) {
        $this->message = $this->integerOnly ? Yii::t('yii', '{attribute} must be an integer.')
            : Yii::t('yii', '{attribute} must be a number.');
    }
    if ($this->min !== null && $this->tooSmall === null) {
        $this->tooSmall = Yii::t('yii', '{attribute} must be no less than {min}.');
    }
    if ($this->max !== null && $this->tooBig === null) {
        $this->tooBig = Yii::t('yii', '{attribute} must be no greater than {max}.');
    }
}

            
isActive() public method

Defined in: yii\validators\Validator::isActive()

Returns a value indicating whether the validator is active for the given scenario and attribute.

A validator is active if

  • the validator's on property is empty, or
  • the validator's on property contains the specified scenario
public boolean isActive ( $scenario )
$scenario string

Scenario name

return boolean

Whether the validator applies to the specified scenario.

                public function isActive($scenario)
{
    return !in_array($scenario, $this->except, true) && (empty($this->on) || in_array($scenario, $this->on, true));
}

            
isEmpty() public method

Defined in: yii\validators\Validator::isEmpty()

Checks if the given value is empty.

A value is considered empty if it is null, an empty array, or an empty string. Note that this method is different from PHP empty(). It will return false when the value is 0.

public boolean isEmpty ( $value )
$value mixed

The value to be checked

return boolean

Whether the value is empty

                public function isEmpty($value)
{
    if ($this->isEmpty !== null) {
        return call_user_func($this->isEmpty, $value);
    }
    return $value === null || $value === [] || $value === '';
}

            
off() public method

Defined in: yii\base\Component::off()

Detaches an existing event handler from this component.

This method is the opposite of on().

Note: in case wildcard pattern is passed for event name, only the handlers registered with this wildcard will be removed, while handlers registered with plain names matching this wildcard will remain.

See also on().

public boolean off ( $name, $handler null )
$name string

Event name

$handler callable|null

The event handler to be removed. If it is null, all handlers attached to the named event will be removed.

return boolean

If a handler is found and detached

                public function off($name, $handler = null)
{
    $this->ensureBehaviors();
    if (empty($this->_events[$name]) && empty($this->_eventWildcards[$name])) {
        return false;
    }
    if ($handler === null) {
        unset($this->_events[$name], $this->_eventWildcards[$name]);
        return true;
    }
    $removed = false;
    // plain event names
    if (isset($this->_events[$name])) {
        foreach ($this->_events[$name] as $i => $event) {
            if ($event[0] === $handler) {
                unset($this->_events[$name][$i]);
                $removed = true;
            }
        }
        if ($removed) {
            $this->_events[$name] = array_values($this->_events[$name]);
            return true;
        }
    }
    // wildcard event names
    if (isset($this->_eventWildcards[$name])) {
        foreach ($this->_eventWildcards[$name] as $i => $event) {
            if ($event[0] === $handler) {
                unset($this->_eventWildcards[$name][$i]);
                $removed = true;
            }
        }
        if ($removed) {
            $this->_eventWildcards[$name] = array_values($this->_eventWildcards[$name]);
            // remove empty wildcards to save future redundant regex checks:
            if (empty($this->_eventWildcards[$name])) {
                unset($this->_eventWildcards[$name]);
            }
        }
    }
    return $removed;
}

            
on() public method

Defined in: yii\base\Component::on()

Attaches an event handler to an event.

The event handler must be a valid PHP callback. The following are some examples:

function ($event) { ... }         // anonymous function
[$object, 'handleClick']          // $object->handleClick()
['Page', 'handleClick']           // Page::handleClick()
'handleClick'                     // global function handleClick()

The event handler must be defined with the following signature,

function ($event)

where $event is an yii\base\Event object which includes parameters associated with the event.

Since 2.0.14 you can specify event name as a wildcard pattern:

$component->on('event.group.*', function ($event) {
    Yii::trace($event->name . ' is triggered.');
});

See also off().

public void on ( $name, $handler, $data null, $append true )
$name string

The event name

$handler callable

The event handler

$data mixed

The data to be passed to the event handler when the event is triggered. When the event handler is invoked, this data can be accessed via yii\base\Event::$data.

$append boolean

Whether to append new event handler to the end of the existing handler list. If false, the new handler will be inserted at the beginning of the existing handler list.

                public function on($name, $handler, $data = null, $append = true)
{
    $this->ensureBehaviors();
    if (strpos($name, '*') !== false) {
        if ($append || empty($this->_eventWildcards[$name])) {
            $this->_eventWildcards[$name][] = [$handler, $data];
        } else {
            array_unshift($this->_eventWildcards[$name], [$handler, $data]);
        }
        return;
    }
    if ($append || empty($this->_events[$name])) {
        $this->_events[$name][] = [$handler, $data];
    } else {
        array_unshift($this->_events[$name], [$handler, $data]);
    }
}

            
trigger() public method

Defined in: yii\base\Component::trigger()

Triggers an event.

This method represents the happening of an event. It invokes all attached handlers for the event including class-level handlers.

public void trigger ( $name, yii\base\Event $event null )
$name string

The event name

$event yii\base\Event|null

The event instance. If not set, a default yii\base\Event object will be created.

                public function trigger($name, Event $event = null)
{
    $this->ensureBehaviors();
    $eventHandlers = [];
    foreach ($this->_eventWildcards as $wildcard => $handlers) {
        if (StringHelper::matchWildcard($wildcard, $name)) {
            $eventHandlers[] = $handlers;
        }
    }
    if (!empty($this->_events[$name])) {
        $eventHandlers[] = $this->_events[$name];
    }
    if (!empty($eventHandlers)) {
        $eventHandlers = call_user_func_array('array_merge', $eventHandlers);
        if ($event === null) {
            $event = new Event();
        }
        if ($event->sender === null) {
            $event->sender = $this;
        }
        $event->handled = false;
        $event->name = $name;
        foreach ($eventHandlers as $handler) {
            $event->data = $handler[1];
            call_user_func($handler[0], $event);
            // stop further handling if the event is handled
            if ($event->handled) {
                return;
            }
        }
    }
    // invoke class-level attached handlers
    Event::trigger($this, $name, $event);
}

            
validate() public method

Defined in: yii\validators\Validator::validate()

Validates a given value.

You may use this method to validate a value out of the context of a data model.

public boolean validate ( $value, &$error null )
$value mixed

The data value to be validated.

$error string|null

The error message to be returned, if the validation fails.

return boolean

Whether the data is valid.

                public function validate($value, &$error = null)
{
    $result = $this->validateValue($value);
    if (empty($result)) {
        return true;
    }
    list($message, $params) = $result;
    $params['attribute'] = Yii::t('yii', 'the input value');
    if (is_array($value)) {
        $params['value'] = 'array()';
    } elseif (is_object($value)) {
        $params['value'] = 'object';
    } else {
        $params['value'] = $value;
    }
    $error = $this->formatMessage($message, $params);
    return false;
}

            
validateAttribute() public method

Validates a single attribute.

Child classes must implement this method to provide the actual validation logic.

public void validateAttribute ( $model, $attribute )
$model yii\base\Model

The data model to be validated

$attribute string

The name of the attribute to be validated.

                public function validateAttribute($model, $attribute)
{
    $value = $model->$attribute;
    if (is_array($value) && !$this->allowArray) {
        $this->addError($model, $attribute, $this->message);
        return;
    }
    $values = !is_array($value) ? [$value] : $value;
    foreach ($values as $value) {
        if ($this->isNotNumber($value)) {
            $this->addError($model, $attribute, $this->message);
            return;
        }
        $pattern = $this->integerOnly ? $this->integerPattern : $this->numberPattern;
        if (!preg_match($pattern, StringHelper::normalizeNumber($value))) {
            $this->addError($model, $attribute, $this->message);
        }
        if ($this->min !== null && $value < $this->min) {
            $this->addError($model, $attribute, $this->tooSmall, ['min' => $this->min]);
        }
        if ($this->max !== null && $value > $this->max) {
            $this->addError($model, $attribute, $this->tooBig, ['max' => $this->max]);
        }
    }
}

            
validateAttributes() public method

Defined in: yii\validators\Validator::validateAttributes()

Validates the specified object.

public void validateAttributes ( $model, $attributes null )
$model yii\base\Model

The data model being validated

$attributes array|string|null

The list of attributes to be validated. Note that if an attribute is not associated with the validator - it will be ignored. If this parameter is null, every attribute listed in $attributes will be validated.

                public function validateAttributes($model, $attributes = null)
{
    $attributes = $this->getValidationAttributes($attributes);
    foreach ($attributes as $attribute) {
        $skip = $this->skipOnError && $model->hasErrors($attribute)
            || $this->skipOnEmpty && $this->isEmpty($model->$attribute);
        if (!$skip) {
            if ($this->when === null || call_user_func($this->when, $model, $attribute)) {
                $this->validateAttribute($model, $attribute);
            }
        }
    }
}

            
validateValue() protected method

Validates a value.

A validator class can implement this method to support data validation out of the context of a data model.

protected array|null validateValue ( $value )
$value mixed

The data value to be validated.

return array|null

The error message and the array of parameters to be inserted into the error message. `php if (!$valid) {

return [$this->message, [
    'param1' => $this->param1,
    'formattedLimit' => Yii::$app->formatter->asShortSize($this->getSizeLimit()),
    'mimeTypes' => implode(', ', $this->mimeTypes),
    'param4' => 'etc...',
]];

}

return null; ` for this example message template can contain {param1}, {formattedLimit}, {mimeTypes}, {param4}

Null should be returned if the data is valid.

throws yii\base\NotSupportedException

if the validator does not supporting data validation without a model

                protected function validateValue($value)
{
    if (is_array($value) && !$this->allowArray) {
        return [Yii::t('yii', '{attribute} is invalid.'), []];
    }
    $values = !is_array($value) ? [$value] : $value;
    foreach ($values as $value) {
        if ($this->isNotNumber($value)) {
            return [Yii::t('yii', '{attribute} is invalid.'), []];
        }
        $pattern = $this->integerOnly ? $this->integerPattern : $this->numberPattern;
        if (!preg_match($pattern, StringHelper::normalizeNumber($value))) {
            return [$this->message, []];
        } elseif ($this->min !== null && $value < $this->min) {
            return [$this->tooSmall, ['min' => $this->min]];
        } elseif ($this->max !== null && $value > $this->max) {
            return [$this->tooBig, ['max' => $this->max]];
        }
    }
    return null;
}