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CFilterValidator

Package system.validators
Inheritance class CFilterValidator » CValidator » CComponent
Since 1.0
Version $Id$
Source Code framework/validators/CFilterValidator.php
CFilterValidator transforms the data being validated based on a filter.

CFilterValidator is actually not a validator but a data processor. It invokes the specified filter method to process the attribute value and save the processed value back to the attribute. The filter method must follow the following signature: 
function foo($value) {...return $newValue; }
Many PHP functions qualify this signature (e.g. trim).

To specify the filter method, set filter property to be the function name.

Public Properties

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PropertyTypeDescriptionDefined By
attributes array list of attributes to be validated. CValidator
builtInValidators array list of built-in validators (name=>class) CValidator
filter callback the filter method CFilterValidator
message string the user-defined error message. CValidator
on array list of scenarios that the validator should be applied. CValidator

Public Methods

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MethodDescriptionDefined By
__call() Calls the named method which is not a class method. CComponent
__get() Returns a property value, an event handler list or a behavior based on its name. CComponent
__isset() Checks if a property value is null. CComponent
__set() Sets value of a component property. CComponent
__unset() Sets a component property to be null. CComponent
applyTo() Returns a value indicating whether the validator applies to the specified scenario. CValidator
asa() Returns the named behavior object. CComponent
attachBehavior() Attaches a behavior to this component. CComponent
attachBehaviors() Attaches a list of behaviors to the component. CComponent
attachEventHandler() Attaches an event handler to an event. CComponent
canGetProperty() Determines whether a property can be read. CComponent
canSetProperty() Determines whether a property can be set. CComponent
createValidator() Creates a validator object. CValidator
detachBehavior() Detaches a behavior from the component. CComponent
detachBehaviors() Detaches all behaviors from the component. CComponent
detachEventHandler() Detaches an existing event handler. CComponent
disableBehavior() Disables an attached behavior. CComponent
disableBehaviors() Disables all behaviors attached to this component. CComponent
enableBehavior() Enables an attached behavior. CComponent
enableBehaviors() Enables all behaviors attached to this component. CComponent
getEventHandlers() Returns the list of attached event handlers for an event. CComponent
hasEvent() Determines whether an event is defined. CComponent
hasEventHandler() Checks whether the named event has attached handlers. CComponent
hasProperty() Determines whether a property is defined. CComponent
raiseEvent() Raises an event. CComponent
validate() Validates the specified object. CValidator

Protected Methods

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MethodDescriptionDefined By
addError() Adds an error about the specified attribute to the active record. CValidator
isEmpty() Checks if the given value is empty. CValidator
validateAttribute() Validates the attribute of the object. CFilterValidator

Property Details

filter property
public callback $filter;

the filter method

Method Details

validateAttribute() method
protected void validateAttribute(CModel $object, string $attribute)
$object CModel the object being validated
$attribute string the attribute being validated
Source Code: framework/validators/CFilterValidator.php#43 (show)
protected function validateAttribute($object,$attribute)
{
    if($this->filter===null || !is_callable($this->filter))
        throw new CException(Yii::t('yii','The "filter" property must be specified with a valid callback.'));
    $object->$attribute=call_user_func_array($this->filter,array($object->$attribute));
}

Validates the attribute of the object. If there is any error, the error message is added to the object.