Class yii\web\ViewAction
| Inheritance | yii\web\ViewAction » yii\base\Action » yii\base\Component » yii\base\BaseObject |
|---|---|
| Implements | yii\base\Configurable |
| Available since version | 2.0 |
| Source Code | https://github.com/yiisoft/yii2/blob/master/framework/web/ViewAction.php |
ViewAction represents an action that displays a view according to a user-specified parameter.
By default, the view being displayed is specified via the view GET parameter.
The name of the GET parameter can be customized via $viewParam.
Users specify a view in the format of path/to/view, which translates to the view name
ViewPrefix/path/to/view where ViewPrefix is given by $viewPrefix. The view will then
be rendered by the render() method of the currently active controller.
Note that the user-specified view name must start with a word character and can only contain word characters, forward slashes, dots and dashes.
Public Properties
| Property | Type | Description | Defined By |
|---|---|---|---|
| $behaviors | yii\base\Behavior[] | List of behaviors attached to this component. This property is read-only. | yii\base\Component |
| $controller | yii\base\Controller|yii\web\Controller|yii\console\Controller | The controller that owns this action | yii\base\Action |
| $defaultView | string | The name of the default view when yii\web\ViewAction::$viewParam GET parameter is not provided by user. | yii\web\ViewAction |
| $id | string | ID of the action | yii\base\Action |
| $layout | mixed | The name of the layout to be applied to the requested view. | yii\web\ViewAction |
| $uniqueId | string | The unique ID of this action among the whole application. This property is read-only. | yii\base\Action |
| $viewParam | string | The name of the GET parameter that contains the requested view name. | yii\web\ViewAction |
| $viewPrefix | string | A string to be prefixed to the user-specified view name to form a complete view name. | yii\web\ViewAction |
Public Methods
| 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\Action |
| __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 |
| 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 |
| 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 |
| getBehavior() | Returns the named behavior object. | yii\base\Component |
| getBehaviors() | Returns all behaviors attached to this component. | yii\base\Component |
| getUniqueId() | Returns the unique ID of this action among the whole application. | yii\base\Action |
| 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\base\BaseObject |
| off() | Detaches an existing event handler from this component. | yii\base\Component |
| on() | Attaches an event handler to an event. | yii\base\Component |
| run() | Runs the action. | yii\web\ViewAction |
| runWithParams() | Runs this action with the specified parameters. | yii\base\Action |
| trigger() | Triggers an event. | yii\base\Component |
Protected Methods
| Method | Description | Defined By |
|---|---|---|
| afterRun() | This method is called right after run() is executed. |
yii\base\Action |
| beforeRun() | This method is called right before run() is executed. |
yii\base\Action |
| render() | Renders a view. | yii\web\ViewAction |
| resolveViewName() | Resolves the view name currently being requested. | yii\web\ViewAction |
Property Details
The name of the default view when yii\web\ViewAction::$viewParam GET parameter is not provided by user. Defaults to 'index'. This should be in the format of 'path/to/view', similar to that given in the GET parameter.
See also yii\web\ViewAction::$viewPrefix.
The name of the layout to be applied to the requested view. This will be assigned to yii\base\Controller::$layout before the view is rendered. Defaults to null, meaning the controller's layout will be used. If false, no layout will be applied.
The name of the GET parameter that contains the requested view name.
A string to be prefixed to the user-specified view name to form a complete view name.
For example, if a user requests for tutorial/chap1, the corresponding view name will
be pages/tutorial/chap1, assuming the prefix is pages.
The actual view file is determined by yii\base\View::findViewFile().
See also yii\base\View::findViewFile().
Method Details
Renders a view.
| protected string render ( $viewName ) | ||
| $viewName | string | View name |
| return | string | Result of the rendering |
|---|---|---|
Resolves the view name currently being requested.
| protected string resolveViewName ( ) | ||
| return | string | The resolved view name |
|---|---|---|
| throws | yii\web\NotFoundHttpException | if the specified view name is invalid |
Runs the action.
This method displays the view requested by the user.
| public void run ( ) | ||
| throws | yii\web\NotFoundHttpException | if the view file cannot be found |
|---|---|---|
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