Class yii\bootstrap\Alert
| Inheritance | yii\bootstrap\Alert » yii\bootstrap\Widget » yii\base\Widget » yii\base\Component » yii\base\BaseObject |
|---|---|
| Implements | yii\base\Configurable, yii\base\ViewContextInterface |
| Uses Traits | yii\bootstrap\BootstrapWidgetTrait |
| Available since version | 2.0 |
| Source Code | https://github.com/yiisoft/yii2-bootstrap/blob/master/Alert.php |
Alert renders an alert bootstrap component.
For example,
echo Alert::widget([
'options' => [
'class' => 'alert-info',
],
'body' => 'Say hello...',
]);
The following example will show the content enclosed between the begin() and end() calls within the alert box:
Alert::begin([
'options' => [
'class' => 'alert-warning',
],
]);
echo 'Say hello...';
Alert::end();
Public Properties
| Property | Type | Description | Defined By |
|---|---|---|---|
| $autoIdPrefix | string | The prefix to the automatically generated widget IDs. | yii\base\Widget |
| $behaviors | yii\base\Behavior[] | List of behaviors attached to this component. This property is read-only. | yii\base\Component |
| $body | string | The body content in the alert component. | yii\bootstrap\Alert |
| $clientEvents | array | The event handlers for the underlying Bootstrap JS plugin. | yii\bootstrap\BootstrapWidgetTrait |
| $clientOptions | array | The options for the underlying Bootstrap JS plugin. | yii\bootstrap\BootstrapWidgetTrait |
| $closeButton | array|false | The options for rendering the close button tag. | yii\bootstrap\Alert |
| $counter | integer | A counter used to generate $id for widgets. | yii\base\Widget |
| $id | string|null | ID of the widget. Note that the type of this property differs in getter and setter. See getId() and setId() for details. | yii\base\Widget |
| $options | array | The HTML attributes for the widget container tag. | yii\bootstrap\Widget |
| $stack | yii\base\Widget[] | The widgets that are currently being rendered (not ended). | yii\base\Widget |
| $view | yii\web\View | The view object that can be used to render views or view files. Note that the type of this property differs in getter and setter. See getView() and setView() for details. | yii\base\Widget |
| $viewPath | string | The directory containing the view files for this widget. This property is read-only. | yii\base\Widget |
Public Methods
| Method | Description | Defined By |
|---|---|---|
| __call() | Calls the named method which is not a class method. | yii\base\BaseObject |
| __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 an object property. | yii\base\BaseObject |
| __isset() | Checks if a property is set, i.e. defined and not null. | yii\base\BaseObject |
| __set() | Sets value of an object property. | yii\base\BaseObject |
| __unset() | Sets an object property to null. | yii\base\BaseObject |
| afterRun() | This method is invoked right after a widget is executed. | yii\base\Widget |
| attachBehavior() | Attaches a behavior to this component. | yii\base\Component |
| attachBehaviors() | Attaches a list of behaviors to the component. | yii\base\Component |
| beforeRun() | This method is invoked right before the widget is executed. | yii\base\Widget |
| begin() | Begins a widget. | yii\base\Widget |
| 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\BaseObject |
| canSetProperty() | Returns a value indicating whether a property can be set. | yii\base\BaseObject |
| className() | Returns the fully qualified name of this class. | yii\base\BaseObject |
| detachBehavior() | Detaches a behavior from the component. | yii\base\Component |
| detachBehaviors() | Detaches all behaviors from the component. | yii\base\Component |
| end() | Ends a widget. | yii\base\Widget |
| ensureBehaviors() | Makes sure that the behaviors declared in behaviors() are attached to this component. | yii\base\Component |
| getBehavior() | Returns the named behavior object. | yii\base\Component |
| getBehaviors() | Returns all behaviors attached to this component. | yii\base\Component |
| getId() | Returns the ID of the widget. | yii\base\Widget |
| getView() | yii\bootstrap\BootstrapWidgetTrait | |
| getViewPath() | Returns the directory containing the view files for this widget. | yii\base\Widget |
| 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\BaseObject |
| hasProperty() | Returns a value indicating whether a property is defined. | yii\base\BaseObject |
| init() | Initializes the widget. | yii\bootstrap\Alert |
| off() | Detaches an existing event handler from this component. | yii\base\Component |
| on() | Attaches an event handler to an event. | yii\base\Component |
| render() | Renders a view. | yii\base\Widget |
| renderFile() | Renders a view file. | yii\base\Widget |
| run() | Renders the widget. | yii\bootstrap\Alert |
| setId() | Sets the ID of the widget. | yii\base\Widget |
| setView() | Sets the view object to be used by this widget. | yii\base\Widget |
| trigger() | Triggers an event. | yii\base\Component |
| widget() | Creates a widget instance and runs it. | yii\base\Widget |
Protected Methods
| Method | Description | Defined By |
|---|---|---|
| initOptions() | Initializes the widget options. | yii\bootstrap\Alert |
| registerClientEvents() | Registers JS event handlers that are listed in $clientEvents. | yii\bootstrap\BootstrapWidgetTrait |
| registerPlugin() | Registers a specific Bootstrap plugin and the related events | yii\bootstrap\BootstrapWidgetTrait |
| renderBodyBegin() | Renders the close button if any before rendering the content. | yii\bootstrap\Alert |
| renderBodyEnd() | Renders the alert body (if any). | yii\bootstrap\Alert |
| renderCloseButton() | Renders the close button. | yii\bootstrap\Alert |
Events
| Event | Type | Description | Defined By |
|---|---|---|---|
| EVENT_AFTER_RUN | yii\base\WidgetEvent | An event raised right after executing a widget. (available since version 2.0.11) | yii\base\Widget |
| EVENT_BEFORE_RUN | yii\base\WidgetEvent | An event raised right before executing a widget. (available since version 2.0.11) | yii\base\Widget |
| EVENT_INIT | yii\base\Event | An event that is triggered when the widget is initialized via init(). (available since version 2.0.11) | yii\base\Widget |
Property Details
The body content in the alert component. Note that anything between the begin() and end() calls of the Alert widget will also be treated as the body content, and will be rendered before this.
The options for rendering the close button tag. The close button is displayed in the header of the modal window. Clicking on the button will hide the modal window. If this is false, no close button will be rendered.
The following special options are supported:
- tag: string, the tag name of the button. Defaults to 'button'.
- label: string, the label of the button. Defaults to '×'.
The rest of the options will be rendered as the HTML attributes of the button tag. Please refer to the Alert documentation for the supported HTML attributes.
Method Details
Initializes the widget.
| public void init ( ) |
Initializes the widget options.
This method sets the default values for various options.
| protected void initOptions ( ) |
Renders the close button if any before rendering the content.
| protected string renderBodyBegin ( ) | ||
| return | string | The rendering result |
|---|---|---|
Renders the alert body (if any).
| protected string renderBodyEnd ( ) | ||
| return | string | The rendering result |
|---|---|---|
Renders the close button.
| protected string renderCloseButton ( ) | ||
| return | string | The rendering result |
|---|---|---|
Renders the widget.
| public void run ( ) |