# LanguageChangedEvent

> Represents the yii2\extensions\localeurls\UrlLanguageManager::EVENT_LANGUAGE_CHANGED event, raised when a language from the URL differs from the persisted one.

[API reference](/docs/api/index.md) › [Locale URLs](/docs/extensions/localeurls/reference/index.md) › LanguageChangedEvent

| class | `yii2\extensions\localeurls\LanguageChangedEvent` |
| --- | --- |
| Extends | [`yii\base\Event`](/docs/api/yii/base/event/index.md) » [`yii\base\BaseObject`](/docs/api/yii/base/baseobject/index.md) |
| Implements | [`yii\base\Configurable`](/docs/api/yii/base/configurable/index.md) |
| Source | [`src/LanguageChangedEvent.php`](https://github.com/yii2-extensions/localeurls/blob/main/src/LanguageChangedEvent.php#L13) |

Represents the [`UrlLanguageManager::EVENT_LANGUAGE_CHANGED`](/docs/extensions/localeurls/reference/urllanguagemanager/index.md#event-EVENT_LANGUAGE_CHANGED) event, raised when a language from the URL differs
from the persisted one.

## Properties

| Property | Type | Description | Defined by |
| --- | --- | --- | --- |
| <span id="property-data"></span>[`$data`](/docs/api/yii/base/event/index.md#property-data) | `mixed` | The data that is passed to [`Component::on()`](/docs/api/yii/base/component/index.md#method-on) when attaching an event handler. Default: `null`. | [`yii\base\Event`](/docs/api/yii/base/event/index.md) |
| <span id="property-handled"></span>[`$handled`](/docs/api/yii/base/event/index.md#property-handled) | `bool` | Whether the event is handled. Default: `false`. | [`yii\base\Event`](/docs/api/yii/base/event/index.md) |
| <span id="property-language"></span>`$language` | `string` | Language code being persisted, for example `de-AT`. Default: `''`. | `LanguageChangedEvent` |
| <span id="property-name"></span>[`$name`](/docs/api/yii/base/event/index.md#property-name) | `string` | The event name. Default: `null`. | [`yii\base\Event`](/docs/api/yii/base/event/index.md) |
| <span id="property-oldLanguage"></span>`$oldLanguage` | `string\|null` | Previously persisted language code, or `null` if no language was persisted. Default: `null`. | `LanguageChangedEvent` |
| <span id="property-sender"></span>[`$sender`](/docs/api/yii/base/event/index.md#property-sender) | `object\|null` | The sender of this event. Default: `null`. | [`yii\base\Event`](/docs/api/yii/base/event/index.md) |

## Methods

| Method | Description | Defined by |
| --- | --- | --- |
| <span id="method-__construct"></span>[`__construct()`](/docs/api/yii/base/baseobject/index.md#method-__construct) | Constructor. | [`yii\base\BaseObject`](/docs/api/yii/base/baseobject/index.md) |
| <span id="method-__call"></span>[`__call()`](/docs/api/yii/base/baseobject/index.md#method-__call) | Calls the named method which is not a class method. | [`yii\base\BaseObject`](/docs/api/yii/base/baseobject/index.md) |
| <span id="method-__get"></span>[`__get()`](/docs/api/yii/base/baseobject/index.md#method-__get) | Returns the value of an object property. | [`yii\base\BaseObject`](/docs/api/yii/base/baseobject/index.md) |
| <span id="method-__isset"></span>[`__isset()`](/docs/api/yii/base/baseobject/index.md#method-__isset) | Checks if a property is set, i.e. defined and not null. | [`yii\base\BaseObject`](/docs/api/yii/base/baseobject/index.md) |
| <span id="method-__set"></span>[`__set()`](/docs/api/yii/base/baseobject/index.md#method-__set) | Sets value of an object property. | [`yii\base\BaseObject`](/docs/api/yii/base/baseobject/index.md) |
| <span id="method-__unset"></span>[`__unset()`](/docs/api/yii/base/baseobject/index.md#method-__unset) | Sets an object property to null. | [`yii\base\BaseObject`](/docs/api/yii/base/baseobject/index.md) |
| <span id="method-canGetProperty"></span>[`canGetProperty()`](/docs/api/yii/base/baseobject/index.md#method-canGetProperty) | Returns a value indicating whether a property can be read. | [`yii\base\BaseObject`](/docs/api/yii/base/baseobject/index.md) |
| <span id="method-canSetProperty"></span>[`canSetProperty()`](/docs/api/yii/base/baseobject/index.md#method-canSetProperty) | Returns a value indicating whether a property can be set. | [`yii\base\BaseObject`](/docs/api/yii/base/baseobject/index.md) |
| <span id="method-className"></span>[`className()`](/docs/api/yii/base/baseobject/index.md#method-className) static | Returns the fully qualified name of this class. | [`yii\base\BaseObject`](/docs/api/yii/base/baseobject/index.md) |
| <span id="method-hasHandlers"></span>[`hasHandlers()`](/docs/api/yii/base/event/index.md#method-hasHandlers) static | Returns a value indicating whether there is any handler attached to the specified class-level event. | [`yii\base\Event`](/docs/api/yii/base/event/index.md) |
| <span id="method-hasMethod"></span>[`hasMethod()`](/docs/api/yii/base/baseobject/index.md#method-hasMethod) | Returns a value indicating whether a method is defined. | [`yii\base\BaseObject`](/docs/api/yii/base/baseobject/index.md) |
| <span id="method-hasProperty"></span>[`hasProperty()`](/docs/api/yii/base/baseobject/index.md#method-hasProperty) | Returns a value indicating whether a property is defined. | [`yii\base\BaseObject`](/docs/api/yii/base/baseobject/index.md) |
| <span id="method-init"></span>[`init()`](/docs/api/yii/base/baseobject/index.md#method-init) | Initializes the object. | [`yii\base\BaseObject`](/docs/api/yii/base/baseobject/index.md) |
| <span id="method-off"></span>[`off()`](/docs/api/yii/base/event/index.md#method-off) static | Detaches an event handler from a class-level event. | [`yii\base\Event`](/docs/api/yii/base/event/index.md) |
| <span id="method-offAll"></span>[`offAll()`](/docs/api/yii/base/event/index.md#method-offAll) static | Detaches all registered class-level event handlers. | [`yii\base\Event`](/docs/api/yii/base/event/index.md) |
| <span id="method-on"></span>[`on()`](/docs/api/yii/base/event/index.md#method-on) static | Attaches an event handler to a class-level event. | [`yii\base\Event`](/docs/api/yii/base/event/index.md) |
| <span id="method-trigger"></span>[`trigger()`](/docs/api/yii/base/event/index.md#method-trigger) static | Triggers a class-level event. | [`yii\base\Event`](/docs/api/yii/base/event/index.md) |