Class yii\web\ViewAction

Inheritanceyii\web\ViewAction » yii\base\Action » yii\base\Component » yii\base\BaseObject
Implementsyii\base\Configurable
Available since version2.0
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

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PropertyTypeDescriptionDefined By
$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
$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

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MethodDescriptionDefined 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\Action
__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
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\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
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\BaseObject
hasProperty() Returns a value indicating whether a property is defined. yii\base\BaseObject
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

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MethodDescriptionDefined 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

$defaultView public property

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.

public string $defaultView 'index'
$layout public property

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.

public mixed $layout null
$viewParam public property

The name of the GET parameter that contains the requested view name.

public string $viewParam 'view'
$viewPrefix public property

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().

public string $viewPrefix 'pages'

Method Details

render() protected method

Renders a view.

protected string render ( $viewName )
$viewName string

View name

return string

Result of the rendering

resolveViewName() protected method

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

run() public method

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