| Inheritance | yii\validators\FilterValidator » yii\validators\Validator » yii\base\Component » yii\base\Object |
|---|---|
| Implements | yii\base\Configurable |
| Available since version | 2.0 |
| Source Code | https://github.com/yiisoft/yii2/blob/master/framework/validators/FilterValidator.php |
FilterValidator converts the attribute value according to a filter.
FilterValidator is actually not a validator but a data processor. It invokes the specified filter callback to process the attribute value and save the processed value back to the attribute. The filter must be a valid PHP callback with the following signature:
function foo($value) {
// compute $newValue here
return $newValue;
}
Many PHP functions qualify this signature (e.g. trim()).
To specify the filter, set $filter property to be the callback.
| Property | Type | Description | Defined By |
|---|---|---|---|
| $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 |
| $filter | callable | The filter. | yii\validators\FilterValidator |
| $isEmpty | callable | A PHP callable that replaces the default implementation of isEmpty(). | yii\validators\Validator |
| $message | string | The user-defined error message. | yii\validators\Validator |
| $on | array|string | Scenarios that the validator can be applied to. | yii\validators\Validator |
| $skipOnArray | boolean | Whether the filter should be skipped if an array input is given. | yii\validators\FilterValidator |
| $skipOnEmpty | boolean | This property is overwritten to be false so that this validator will be applied when the value being validated is empty. | yii\validators\FilterValidator |
| $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 |
| $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 |
| 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\Object |
| __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\Object |
| clientValidateAttribute() | Returns the JavaScript needed for performing client-side validation. | yii\validators\FilterValidator |
| 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\FilterValidator |
| 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\FilterValidator |
| 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\FilterValidator |
| validateAttributes() | Validates the specified object. | yii\validators\Validator |
| 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\Validator |
The filter. This can be a global function name, anonymous function, etc. The function signature must be as follows,
function foo($value) {
// compute $newValue here
return $newValue;
}
public callable $filter = null
Whether the filter should be skipped if an array input is given. If true and an array input is given, the filter will not be applied.
public boolean $skipOnArray = false
This property is overwritten to be false so that this validator will be applied when the value being validated is empty.
public boolean $skipOnEmpty = false
Returns the JavaScript needed for performing client-side validation.
Calls getClientOptions() to generate options array for client-side validation.
You may override this method to return the JavaScript validation code if the validator can support client-side validation.
The following JavaScript variables are predefined and can be used in the validation code:
attribute: an object describing the the attribute being validated.value: the value being validated.messages: an array used to hold the validation error messages for the attribute.deferred: an array used to hold deferred objects for asynchronous validation$form: a jQuery object containing the form elementThe attribute object contains the following properties:
id: a unique ID identifying the attribute (e.g. "loginform-username") in the formname: attribute name or expression (e.g. "[0]content" for tabular input)container: the jQuery selector of the container of the input fieldinput: the jQuery selector of the input field under the context of the formerror: the jQuery selector of the error tag under the context of the containerstatus: 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. |
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 |
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 ( ) |
|---|
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. |
© 2008–2017 by Yii Software LLC
Licensed under the three clause BSD license.
http://www.yiiframework.com/doc-2.0/yii-validators-filtervalidator.html