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Class yii\base\Controller

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Inheritanceyii\base\Controller » yii\base\Component » yii\base\BaseObject
Implementsyii\base\Configurable, yii\base\ViewContextInterface
Subclassesyii\console\Controller, yii\console\controllers\AssetController, yii\console\controllers\BaseMigrateController, yii\console\controllers\CacheController, yii\console\controllers\FixtureController, yii\console\controllers\HelpController, yii\console\controllers\MessageController, yii\console\controllers\MigrateController, yii\console\controllers\ServeController, yii\rest\ActiveController, yii\rest\Controller, yii\web\Controller
Available since version2.0
Source Code https://github.com/yiisoft/yii2/blob/master/framework/base/Controller.php

Controller is the base class for classes containing controller logic.

For more details and usage information on Controller, see the guide article on controllers.

Public Properties

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Property Type Description Defined By
$action yii\base\Action|null The action that is currently being executed. yii\base\Controller
$behaviors yii\base\Behavior[] List of behaviors attached to this component. yii\base\Component
$defaultAction string The ID of the action that is used when the action ID is not specified in the request. yii\base\Controller
$id string The ID of this controller. yii\base\Controller
$layout string|null|false The name of the layout to be applied to this controller's views. yii\base\Controller
$module yii\base\Module The module that this controller belongs to. yii\base\Controller
$modules yii\base\Module[] All ancestor modules that this controller is located within. yii\base\Controller
$request yii\base\Request|array|string The request. yii\base\Controller
$response yii\base\Response|array|string The response. yii\base\Controller
$route string The route (module ID, controller ID and action ID) of the current request. yii\base\Controller
$uniqueId string The controller ID that is prefixed with the module ID (if any). yii\base\Controller
$view yii\base\View|yii\web\View The view object that can be used to render views or view files. yii\base\Controller
$viewPath string The directory containing the view files for this controller. yii\base\Controller

Public Methods

Hide inherited 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() yii\base\Controller
__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
actions() Declares external actions for the controller. yii\base\Controller
afterAction() This method is invoked right after an action is executed. yii\base\Controller
attachBehavior() Attaches a behavior to this component. yii\base\Component
attachBehaviors() Attaches a list of behaviors to the component. yii\base\Component
beforeAction() This method is invoked right before an action is executed. yii\base\Controller
behaviors() Returns a list of behaviors that this component should behave as. yii\base\Component
bindActionParams() Binds the parameters to the action. yii\base\Controller
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
createAction() Creates an action based on the given action ID. yii\base\Controller
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
findLayoutFile() Finds the applicable layout file. yii\base\Controller
getBehavior() Returns the named behavior object. yii\base\Component
getBehaviors() Returns all behaviors attached to this component. yii\base\Component
getModules() Returns all ancestor modules of this controller. yii\base\Controller
getRoute() Returns the route of the current request. yii\base\Controller
getUniqueId() Returns the unique ID of the controller. yii\base\Controller
getView() Returns the view object that can be used to render views or view files. yii\base\Controller
getViewPath() Returns the directory containing view files for this controller. yii\base\Controller
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\Controller
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 and applies layout if available. yii\base\Controller
renderContent() Renders a static string by applying a layout. yii\base\Controller
renderFile() Renders a view file. yii\base\Controller
renderPartial() Renders a view without applying layout. yii\base\Controller
run() Runs a request specified in terms of a route. yii\base\Controller
runAction() Runs an action within this controller with the specified action ID and parameters. yii\base\Controller
setView() Sets the view object to be used by this controller. yii\base\Controller
setViewPath() Sets the directory that contains the view files. yii\base\Controller
trigger() Triggers an event. yii\base\Component

Protected Methods

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Method Description Defined By
bindInjectedParams() Fills parameters based on types and names in action method signature. yii\base\Controller

Events

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Event Type Description Defined By
EVENT_AFTER_ACTION yii\base\ActionEvent An event raised right after executing a controller action. yii\base\Controller
EVENT_BEFORE_ACTION yii\base\ActionEvent An event raised right before executing a controller action. yii\base\Controller

Property Details

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$action public property

The action that is currently being executed. This property will be set by run() when it is called by yii\base\Application to run an action.

public yii\base\Action|null $action = null
$defaultAction public property

The ID of the action that is used when the action ID is not specified in the request. Defaults to 'index'.

public string $defaultAction = 'index'
$id public property

The ID of this controller.

public string $id = null
$layout public property

The name of the layout to be applied to this controller's views. This property mainly affects the behavior of render(). Defaults to null, meaning the actual layout value should inherit that from $module's layout value. If false, no layout will be applied.

public string|null|false $layout = null
$module public property

The module that this controller belongs to.

public yii\base\Module $module = null
$modules public property

All ancestor modules that this controller is located within.

public yii\base\Module[] $modules = null
$request public property (available since version 2.0.36)

The request.

public yii\base\Request|array|string $request = 'request'
$response public property (available since version 2.0.36)

The response.

public yii\base\Response|array|string $response = 'response'
$route public property

The route (module ID, controller ID and action ID) of the current request.

public string $route = null
$uniqueId public property

The controller ID that is prefixed with the module ID (if any).

public string $uniqueId = null
$view public property

The view object that can be used to render views or view files.

public yii\base\View|yii\web\View $view = null
$viewPath public property

The directory containing the view files for this controller.

public string $viewPath = null

Method Details

Hide inherited methods

__call() public method

Defined in: yii\base\Component::__call()

Calls the named method which is not a class method.

This method will check if any attached behavior has the named method and will execute it if available.

Do not call this method directly as it is a PHP magic method that will be implicitly called when an unknown method is being invoked.

public mixed __call ( $name, $params )
$name string

The method name
$params array

Method parameters
return mixed

The method return value
throws yii\base\UnknownMethodException

when calling unknown method

 

                public function __call($name, $params)
{
    $this->ensureBehaviors();
    foreach ($this->_behaviors as $object) {
        if ($object->hasMethod($name)) {
            return call_user_func_array([$object, $name], $params);
        }
    }
    throw new UnknownMethodException('Calling unknown method: ' . get_class($this) . "::$name()");
}
__clone() public method

Defined in: yii\base\Component::__clone()

This method is called after the object is created by cloning an existing one.

It removes all behaviors because they are attached to the old object.

public void __clone ( )

                public function __clone()
{
    $this->_events = [];
    $this->_eventWildcards = [];
    $this->_behaviors = null;
}
__construct() public method

public void __construct ( $id, $module, $config = [] )
$id string

The ID of this controller.
$module yii\base\Module

The module that this controller belongs to.
$config array

Name-value pairs that will be used to initialize the object properties.

 

                public function __construct($id, $module, $config = [])
{
    $this->id = $id;
    $this->module = $module;
    parent::__construct($config);
}
__get() public method

Defined in: yii\base\Component::__get()

Returns the value of a component property.

This method will check in the following order and act accordingly:

  • a property defined by a getter: return the getter result
  • a property of a behavior: return the behavior property value

Do not call this method directly as it is a PHP magic method that will be implicitly called when executing $value = $component->property;.

See also __set().

public mixed __get ( $name )
$name string

The property name
return mixed

The property value or the value of a behavior's property
throws yii\base\UnknownPropertyException

if the property is not defined
throws yii\base\InvalidCallException

if the property is write-only.

 

                public function __get($name)
{
    $getter = 'get' . $name;
    if (method_exists($this, $getter)) {
        // read property, e.g. getName()
        return $this->$getter();
    }
    // behavior property
    $this->ensureBehaviors();
    foreach ($this->_behaviors as $behavior) {
        if ($behavior->canGetProperty($name)) {
            return $behavior->$name;
        }
    }
    if (method_exists($this, 'set' . $name)) {
        throw new InvalidCallException('Getting write-only property: ' . get_class($this) . '::' . $name);
    }
    throw new UnknownPropertyException('Getting unknown property: ' . get_class($this) . '::' . $name);
}
__isset() public method

Defined in: yii\base\Component::__isset()

Checks if a property is set, i.e. defined and not null.

This method will check in the following order and act accordingly:

  • a property defined by a setter: return whether the property is set
  • a property of a behavior: return whether the property is set
  • return false for non existing properties

Do not call this method directly as it is a PHP magic method that will be implicitly called when executing isset($component->property).

See also https://www.php.net/manual/en/function.isset.php.

public boolean __isset ( $name )
$name string

The property name or the event name
return boolean

Whether the named property is set

 

                public function __isset($name)
{
    $getter = 'get' . $name;
    if (method_exists($this, $getter)) {
        return $this->$getter() !== null;
    }
    // behavior property
    $this->ensureBehaviors();
    foreach ($this->_behaviors as $behavior) {
        if ($behavior->canGetProperty($name)) {
            return $behavior->$name !== null;
        }
    }
    return false;
}
__set() public method

Defined in: yii\base\Component::__set()

Sets the value of a component property.

This method will check in the following order and act accordingly:

  • a property defined by a setter: set the property value
  • an event in the format of "on xyz": attach the handler to the event "xyz"
  • a behavior in the format of "as xyz": attach the behavior named as "xyz"
  • a property of a behavior: set the behavior property value

Do not call this method directly as it is a PHP magic method that will be implicitly called when executing $component->property = $value;.

See also __get().

public void __set ( $name, $value )
$name string

The property name or the event name
$value mixed

The property value
throws yii\base\UnknownPropertyException

if the property is not defined
throws yii\base\InvalidCallException

if the property is read-only.

 

                public function __set($name, $value)
{
    $setter = 'set' . $name;
    if (method_exists($this, $setter)) {
        // set property
        $this->$setter($value);
        return;
    } elseif (strncmp($name, 'on ', 3) === 0) {
        // on event: attach event handler
        $this->on(trim(substr($name, 3)), $value);
        return;
    } elseif (strncmp($name, 'as ', 3) === 0) {
        // as behavior: attach behavior
        $name = trim(substr($name, 3));
        $this->attachBehavior($name, $value instanceof Behavior ? $value : Yii::createObject($value));
        return;
    }
    // behavior property
    $this->ensureBehaviors();
    foreach ($this->_behaviors as $behavior) {
        if ($behavior->canSetProperty($name)) {
            $behavior->$name = $value;
            return;
        }
    }
    if (method_exists($this, 'get' . $name)) {
        throw new InvalidCallException('Setting read-only property: ' . get_class($this) . '::' . $name);
    }
    throw new UnknownPropertyException('Setting unknown property: ' . get_class($this) . '::' . $name);
}
__unset() public method

Defined in: yii\base\Component::__unset()

Sets a component property to be null.

This method will check in the following order and act accordingly:

  • a property defined by a setter: set the property value to be null
  • a property of a behavior: set the property value to be null

Do not call this method directly as it is a PHP magic method that will be implicitly called when executing unset($component->property).

See also https://www.php.net/manual/en/function.unset.php.

public void __unset ( $name )
$name string

The property name
throws yii\base\InvalidCallException

if the property is read only.

 

                public function __unset($name)
{
    $setter = 'set' . $name;
    if (method_exists($this, $setter)) {
        $this->$setter(null);
        return;
    }
    // behavior property
    $this->ensureBehaviors();
    foreach ($this->_behaviors as $behavior) {
        if ($behavior->canSetProperty($name)) {
            $behavior->$name = null;
            return;
        }
    }
    throw new InvalidCallException('Unsetting an unknown or read-only property: ' . get_class($this) . '::' . $name);
}
actions() public method

Declares external actions for the controller.

This method is meant to be overwritten to declare external actions for the controller. It should return an array, with array keys being action IDs, and array values the corresponding action class names or action configuration arrays. For example,

return [
    'action1' => 'app\components\Action1',
    'action2' => [
        'class' => 'app\components\Action2',
        'property1' => 'value1',
        'property2' => 'value2',
    ],
];

Yii::createObject() will be used later to create the requested action using the configuration provided here.

public array actions ( )

                public function actions()
{
    return [];
}
afterAction() public method

This method is invoked right after an action is executed.

The method will trigger the EVENT_AFTER_ACTION event. The return value of the method will be used as the action return value.

If you override this method, your code should look like the following:

public function afterAction($action, $result)
{
    $result = parent::afterAction($action, $result);
    // your custom code here
    return $result;
}
public mixed afterAction ( $action, $result )
$action yii\base\Action

The action just executed.
$result mixed

The action return result.
return mixed

The processed action result.

 

                public function afterAction($action, $result)
{
    $event = new ActionEvent($action);
    $event->result = $result;
    $this->trigger(self::EVENT_AFTER_ACTION, $event);
    return $event->result;
}
attachBehavior() public method

Defined in: yii\base\Component::attachBehavior()

Attaches a behavior to this component.

This method will create the behavior object based on the given configuration. After that, the behavior object will be attached to this component by calling the yii\base\Behavior::attach() method.

See also detachBehavior().

public yii\base\Behavior attachBehavior ( $name, $behavior )
$name string

The name of the behavior.
$behavior string|array|yii\base\Behavior

The behavior configuration. This can be one of the following:
return yii\base\Behavior

The behavior object

 

                public function attachBehavior($name, $behavior)
{
    $this->ensureBehaviors();
    return $this->attachBehaviorInternal($name, $behavior);
}
attachBehaviors() public method

Defined in: yii\base\Component::attachBehaviors()

Attaches a list of behaviors to the component.

Each behavior is indexed by its name and should be a yii\base\Behavior object, a string specifying the behavior class, or an configuration array for creating the behavior.

See also attachBehavior().

public void attachBehaviors ( $behaviors )
$behaviors array

List of behaviors to be attached to the component

 

                public function attachBehaviors($behaviors)
{
    $this->ensureBehaviors();
    foreach ($behaviors as $name => $behavior) {
        $this->attachBehaviorInternal($name, $behavior);
    }
}
beforeAction() public method

This method is invoked right before an action is executed.

The method will trigger the EVENT_BEFORE_ACTION event. The return value of the method will determine whether the action should continue to run.

In case the action should not run, the request should be handled inside of the beforeAction code by either providing the necessary output or redirecting the request. Otherwise the response will be empty.

If you override this method, your code should look like the following:

public function beforeAction($action)
{
    // your custom code here, if you want the code to run before action filters,
    // which are triggered on the [[EVENT_BEFORE_ACTION]] event, e.g. PageCache or AccessControl

    if (!parent::beforeAction($action)) {
        return false;
    }

    // other custom code here

    return true; // or false to not run the action
}
public boolean beforeAction ( $action )
$action yii\base\Action

The action to be executed.
return boolean

Whether the action should continue to run.

 

                public function beforeAction($action)
{
    $event = new ActionEvent($action);
    $this->trigger(self::EVENT_BEFORE_ACTION, $event);
    return $event->isValid;
}
behaviors() public method

Defined in: yii\base\Component::behaviors()

Returns a list of behaviors that this component should behave as.

Child classes may override this method to specify the behaviors they want to behave as.

The return value of this method should be an array of behavior objects or configurations indexed by behavior names. A behavior configuration can be either a string specifying the behavior class or an array of the following structure:

'behaviorName' => [
    'class' => 'BehaviorClass',
    'property1' => 'value1',
    'property2' => 'value2',
]

Note that a behavior class must extend from yii\base\Behavior. Behaviors can be attached using a name or anonymously. When a name is used as the array key, using this name, the behavior can later be retrieved using getBehavior() or be detached using detachBehavior(). Anonymous behaviors can not be retrieved or detached.

Behaviors declared in this method will be attached to the component automatically (on demand).

public array behaviors ( )
return array

The behavior configurations.

 

                public function behaviors()
{
    return [];
}
bindActionParams() public method

Binds the parameters to the action.

This method is invoked by yii\base\Action when it begins to run with the given parameters.

public array bindActionParams ( $action, $params )
$action yii\base\Action

The action to be bound with parameters.
$params array

The parameters to be bound to the action.
return array

The valid parameters that the action can run with.

 

                public function bindActionParams($action, $params)
{
    return [];
}
bindInjectedParams() protected method (available since version 2.0.36)

Fills parameters based on types and names in action method signature.

protected void bindInjectedParams ( ReflectionType $type, $name, &$args, &$requestedParams )
$type ReflectionType

The reflected type of the action parameter.
$name string

The name of the parameter.
$args array

The array of arguments for the action, this function may append items to it.
$requestedParams array

The array with requested params, this function may write specific keys to it.
throws yii\base\ErrorException

when we cannot load a required service.
throws yii\base\InvalidConfigException

Thrown when there is an error in the DI configuration.
throws yii\di\NotInstantiableException

Thrown when a definition cannot be resolved to a concrete class (for example an interface type hint) without a proper definition in the container.

 

                final protected function bindInjectedParams(\ReflectionType $type, $name, &$args, &$requestedParams)
{
    // Since it is not a builtin type it must be DI injection.
    $typeName = $type->getName();
    if (($component = $this->module->get($name, false)) instanceof $typeName) {
        $args[] = $component;
        $requestedParams[$name] = 'Component: ' . get_class($component) . " \$$name";
    } elseif ($this->module->has($typeName) && ($service = $this->module->get($typeName)) instanceof $typeName) {
        $args[] = $service;
        $requestedParams[$name] = 'Module ' . get_class($this->module) . " DI: $typeName \$$name";
    } elseif (\Yii::$container->has($typeName) && ($service = \Yii::$container->get($typeName)) instanceof $typeName) {
        $args[] = $service;
        $requestedParams[$name] = "Container DI: $typeName \$$name";
    } elseif ($type->allowsNull()) {
        $args[] = null;
        $requestedParams[$name] = "Unavailable service: $name";
    } else {
        throw new Exception('Could not load required service: ' . $name);
    }
}
canGetProperty() public method

Defined in: yii\base\Component::canGetProperty()

Returns a value indicating whether a property can be read.

A property can be read if:

  • the class has a getter method associated with the specified name (in this case, property name is case-insensitive);
  • the class has a member variable with the specified name (when $checkVars is true);
  • an attached behavior has a readable property of the given name (when $checkBehaviors is true).

See also canSetProperty().

public boolean canGetProperty ( $name, $checkVars = true, $checkBehaviors = true )
$name string

The property name
$checkVars boolean

Whether to treat member variables as properties
$checkBehaviors boolean

Whether to treat behaviors' properties as properties of this component
return boolean

Whether the property can be read

 

                public function canGetProperty($name, $checkVars = true, $checkBehaviors = true)
{
    if (method_exists($this, 'get' . $name) || $checkVars && property_exists($this, $name)) {
        return true;
    } elseif ($checkBehaviors) {
        $this->ensureBehaviors();
        foreach ($this->_behaviors as $behavior) {
            if ($behavior->canGetProperty($name, $checkVars)) {
                return true;
            }
        }
    }
    return false;
}
canSetProperty() public method

Defined in: yii\base\Component::canSetProperty()

Returns a value indicating whether a property can be set.

A property can be written if:

  • the class has a setter method associated with the specified name (in this case, property name is case-insensitive);
  • the class has a member variable with the specified name (when $checkVars is true);
  • an attached behavior has a writable property of the given name (when $checkBehaviors is true).

See also canGetProperty().

public boolean canSetProperty ( $name, $checkVars = true, $checkBehaviors = true )
$name string

The property name
$checkVars boolean

Whether to treat member variables as properties
$checkBehaviors boolean

Whether to treat behaviors' properties as properties of this component
return boolean

Whether the property can be written

 

                public function canSetProperty($name, $checkVars = true, $checkBehaviors = true)
{
    if (method_exists($this, 'set' . $name) || $checkVars && property_exists($this, $name)) {
        return true;
    } elseif ($checkBehaviors) {
        $this->ensureBehaviors();
        foreach ($this->_behaviors as $behavior) {
            if ($behavior->canSetProperty($name, $checkVars)) {
                return true;
            }
        }
    }
    return false;
}
className() public static method
Deprecated since 2.0.14. On PHP >=5.5, use ::class instead.

Defined in: yii\base\BaseObject::className()

Returns the fully qualified name of this class.

public static string className ( )
return string

The fully qualified name of this class.

 

                public static function className()
{
    return get_called_class();
}
createAction() public method

Creates an action based on the given action ID.

The method first checks if the action ID has been declared in actions(). If so, it will use the configuration declared there to create the action object. If not, it will look for a controller method whose name is in the format of actionXyz where xyz is the action ID. If found, an yii\base\InlineAction representing that method will be created and returned.

public yii\base\Action|null createAction ( $id )
$id string

The action ID.
return yii\base\Action|null

The newly created action instance. Null if the ID doesn't resolve into any action.

 

                public function createAction($id)
{
    if ($id === '') {
        $id = $this->defaultAction;
    }
    $actionMap = $this->actions();
    if (isset($actionMap[$id])) {
        return Yii::createObject($actionMap[$id], [$id, $this]);
    }
    if (preg_match('/^(?:[a-z0-9_]+-)*[a-z0-9_]+$/', $id)) {
        $methodName = 'action' . str_replace(' ', '', ucwords(str_replace('-', ' ', $id)));
        if (method_exists($this, $methodName)) {
            $method = new \ReflectionMethod($this, $methodName);
            if ($method->isPublic() && $method->getName() === $methodName) {
                return new InlineAction($id, $this, $methodName);
            }
        }
    }
    return null;
}
detachBehavior() public method

Defined in: yii\base\Component::detachBehavior()

Detaches a behavior from the component.

The behavior's yii\base\Behavior::detach() method will be invoked.

public yii\base\Behavior|null detachBehavior ( $name )
$name string

The behavior's name.
return yii\base\Behavior|null

The detached behavior. Null if the behavior does not exist.

 

                public function detachBehavior($name)
{
    $this->ensureBehaviors();
    if (isset($this->_behaviors[$name])) {
        $behavior = $this->_behaviors[$name];
        unset($this->_behaviors[$name]);
        $behavior->detach();
        return $behavior;
    }
    return null;
}
detachBehaviors() public method

Defined in: yii\base\Component::detachBehaviors()

Detaches all behaviors from the component.

public void detachBehaviors ( )

                public function detachBehaviors()
{
    $this->ensureBehaviors();
    foreach ($this->_behaviors as $name => $behavior) {
        $this->detachBehavior($name);
    }
}
ensureBehaviors() public method

Defined in: yii\base\Component::ensureBehaviors()

Makes sure that the behaviors declared in behaviors() are attached to this component.

public void ensureBehaviors ( )

                public function ensureBehaviors()
{
    if ($this->_behaviors === null) {
        $this->_behaviors = [];
        foreach ($this->behaviors() as $name => $behavior) {
            $this->attachBehaviorInternal($name, $behavior);
        }
    }
}
findLayoutFile() public method

Finds the applicable layout file.

public string|boolean findLayoutFile ( $view )
$view yii\base\View

The view object to render the layout file.
return string|boolean

The layout file path, or false if layout is not needed. Please refer to render() on how to specify this parameter.
throws yii\base\InvalidArgumentException

if an invalid path alias is used to specify the layout.

 

                public function findLayoutFile($view)
{
    $module = $this->module;
    $layout = null;
    if (is_string($this->layout)) {
        $layout = $this->layout;
    } elseif ($this->layout === null) {
        while ($module !== null && $module->layout === null) {
            $module = $module->module;
        }
        if ($module !== null && is_string($module->layout)) {
            $layout = $module->layout;
        }
    }
    if ($layout === null) {
        return false;
    }
    if (strncmp($layout, '@', 1) === 0) {
        $file = Yii::getAlias($layout);
    } elseif (strncmp($layout, '/', 1) === 0) {
        $file = Yii::$app->getLayoutPath() . DIRECTORY_SEPARATOR . substr($layout, 1);
    } else {
        $file = $module->getLayoutPath() . DIRECTORY_SEPARATOR . $layout;
    }
    if (pathinfo($file, PATHINFO_EXTENSION) !== '') {
        return $file;
    }
    $path = $file . '.' . $view->defaultExtension;
    if ($view->defaultExtension !== 'php' && !is_file($path)) {
        $path = $file . '.php';
    }
    return $path;
}
getBehavior() public method

Defined in: yii\base\Component::getBehavior()

Returns the named behavior object.

public yii\base\Behavior|null getBehavior ( $name )
$name string

The behavior name
return yii\base\Behavior|null

The behavior object, or null if the behavior does not exist

 

                public function getBehavior($name)
{
    $this->ensureBehaviors();
    return isset($this->_behaviors[$name]) ? $this->_behaviors[$name] : null;
}
getBehaviors() public method

Defined in: yii\base\Component::getBehaviors()

Returns all behaviors attached to this component.

public yii\base\Behavior[] getBehaviors ( )
return yii\base\Behavior[]

List of behaviors attached to this component

 

                public function getBehaviors()
{
    $this->ensureBehaviors();
    return $this->_behaviors;
}
getModules() public method

Returns all ancestor modules of this controller.

The first module in the array is the outermost one (i.e., the application instance), while the last is the innermost one.

public yii\base\Module[] getModules ( )
return yii\base\Module[]

All ancestor modules that this controller is located within.

 

                public function getModules()
{
    $modules = [$this->module];
    $module = $this->module;
    while ($module->module !== null) {
        array_unshift($modules, $module->module);
        $module = $module->module;
    }
    return $modules;
}
getRoute() public method

Returns the route of the current request.

public string getRoute ( )
return string

The route (module ID, controller ID and action ID) of the current request.

 

                public function getRoute()
{
    return $this->action !== null ? $this->action->getUniqueId() : $this->getUniqueId();
}
getUniqueId() public method

Returns the unique ID of the controller.

public string getUniqueId ( )
return string

The controller ID that is prefixed with the module ID (if any).

 

                public function getUniqueId()
{
    return $this->module instanceof Application ? $this->id : $this->module->getUniqueId() . '/' . $this->id;
}
getView() public method

Returns the view object that can be used to render views or view files.

The render(), renderPartial() and renderFile() methods will use this view object to implement the actual view rendering. If not set, it will default to the "view" application component.

public yii\base\View|yii\web\View getView ( )
return yii\base\View|yii\web\View

The view object that can be used to render views or view files.

 

                public function getView()
{
    if ($this->_view === null) {
        $this->_view = Yii::$app->getView();
    }
    return $this->_view;
}
getViewPath() public method

Returns the directory containing view files for this controller.

The default implementation returns the directory named as controller $id under the $module's $viewPath directory.

public string getViewPath ( )
return string

The directory containing the view files for this controller.

 

                public function getViewPath()
{
    if ($this->_viewPath === null) {
        $this->_viewPath = $this->module->getViewPath() . DIRECTORY_SEPARATOR . $this->id;
    }
    return $this->_viewPath;
}
hasEventHandlers() public method

Defined in: yii\base\Component::hasEventHandlers()

Returns a value indicating whether there is any handler attached to the named event.

public boolean hasEventHandlers ( $name )
$name string

The event name
return boolean

Whether there is any handler attached to the event.

 

                public function hasEventHandlers($name)
{
    $this->ensureBehaviors();
    if (!empty($this->_events[$name])) {
        return true;
    }
    foreach ($this->_eventWildcards as $wildcard => $handlers) {
        if (!empty($handlers) && StringHelper::matchWildcard($wildcard, $name)) {
            return true;
        }
    }
    return Event::hasHandlers($this, $name);
}
hasMethod() public method

Defined in: yii\base\Component::hasMethod()

Returns a value indicating whether a method is defined.

A method is defined if:

  • the class has a method with the specified name
  • an attached behavior has a method with the given name (when $checkBehaviors is true).
public boolean hasMethod ( $name, $checkBehaviors = true )
$name string

The property name
$checkBehaviors boolean

Whether to treat behaviors' methods as methods of this component
return boolean

Whether the method is defined

 

                public function hasMethod($name, $checkBehaviors = true)
{
    if (method_exists($this, $name)) {
        return true;
    } elseif ($checkBehaviors) {
        $this->ensureBehaviors();
        foreach ($this->_behaviors as $behavior) {
            if ($behavior->hasMethod($name)) {
                return true;
            }
        }
    }
    return false;
}
hasProperty() public method

Defined in: yii\base\Component::hasProperty()

Returns a value indicating whether a property is defined for this component.

A property is defined if:

  • the class has a getter or setter method associated with the specified name (in this case, property name is case-insensitive);
  • the class has a member variable with the specified name (when $checkVars is true);
  • an attached behavior has a property of the given name (when $checkBehaviors is true).

See also:

public boolean hasProperty ( $name, $checkVars = true, $checkBehaviors = true )
$name string

The property name
$checkVars boolean

Whether to treat member variables as properties
$checkBehaviors boolean

Whether to treat behaviors' properties as properties of this component
return boolean

Whether the property is defined

 

                public function hasProperty($name, $checkVars = true, $checkBehaviors = true)
{
    return $this->canGetProperty($name, $checkVars, $checkBehaviors) || $this->canSetProperty($name, false, $checkBehaviors);
}
init() public method (available since version 2.0.36)

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 ( )

                public function init()
{
    parent::init();
    $this->request = Instance::ensure($this->request, Request::className());
    $this->response = Instance::ensure($this->response, Response::className());
}
off() public method

Defined in: yii\base\Component::off()

Detaches an existing event handler from this component.

This method is the opposite of on().

Note: in case wildcard pattern is passed for event name, only the handlers registered with this wildcard will be removed, while handlers registered with plain names matching this wildcard will remain.

See also on().

public boolean off ( $name, $handler = null )
$name string

Event name
$handler callable|null

The event handler to be removed. If it is null, all handlers attached to the named event will be removed.
return boolean

If a handler is found and detached

 

                public function off($name, $handler = null)
{
    $this->ensureBehaviors();
    if (empty($this->_events[$name]) && empty($this->_eventWildcards[$name])) {
        return false;
    }
    if ($handler === null) {
        unset($this->_events[$name], $this->_eventWildcards[$name]);
        return true;
    }
    $removed = false;
    // plain event names
    if (isset($this->_events[$name])) {
        foreach ($this->_events[$name] as $i => $event) {
            if ($event[0] === $handler) {
                unset($this->_events[$name][$i]);
                $removed = true;
            }
        }
        if ($removed) {
            $this->_events[$name] = array_values($this->_events[$name]);
            return true;
        }
    }
    // wildcard event names
    if (isset($this->_eventWildcards[$name])) {
        foreach ($this->_eventWildcards[$name] as $i => $event) {
            if ($event[0] === $handler) {
                unset($this->_eventWildcards[$name][$i]);
                $removed = true;
            }
        }
        if ($removed) {
            $this->_eventWildcards[$name] = array_values($this->_eventWildcards[$name]);
            // remove empty wildcards to save future redundant regex checks:
            if (empty($this->_eventWildcards[$name])) {
                unset($this->_eventWildcards[$name]);
            }
        }
    }
    return $removed;
}
on() public method

Defined in: yii\base\Component::on()

Attaches an event handler to an event.

The event handler must be a valid PHP callback. The following are some examples:

function ($event) { ... }         // anonymous function
[$object, 'handleClick']          // $object->handleClick()
['Page', 'handleClick']           // Page::handleClick()
'handleClick'                     // global function handleClick()

The event handler must be defined with the following signature,

function ($event)

where $event is an yii\base\Event object which includes parameters associated with the event.

Since 2.0.14 you can specify event name as a wildcard pattern:

$component->on('event.group.*', function ($event) {
    Yii::trace($event->name . ' is triggered.');
});

See also off().

public void on ( $name, $handler, $data = null, $append = true )
$name string

The event name
$handler callable

The event handler
$data mixed

The data to be passed to the event handler when the event is triggered. When the event handler is invoked, this data can be accessed via yii\base\Event::$data.
$append boolean

Whether to append new event handler to the end of the existing handler list. If false, the new handler will be inserted at the beginning of the existing handler list.

 

                public function on($name, $handler, $data = null, $append = true)
{
    $this->ensureBehaviors();
    if (strpos($name, '*') !== false) {
        if ($append || empty($this->_eventWildcards[$name])) {
            $this->_eventWildcards[$name][] = [$handler, $data];
        } else {
            array_unshift($this->_eventWildcards[$name], [$handler, $data]);
        }
        return;
    }
    if ($append || empty($this->_events[$name])) {
        $this->_events[$name][] = [$handler, $data];
    } else {
        array_unshift($this->_events[$name], [$handler, $data]);
    }
}
render() public method

Renders a view and applies layout if available.

The view to be rendered can be specified in one of the following formats:

  • path alias (e.g. "@app/views/site/index");
  • absolute path within application (e.g. "//site/index"): the view name starts with double slashes. The actual view file will be looked for under the view path of the application.
  • absolute path within module (e.g. "/site/index"): the view name starts with a single slash. The actual view file will be looked for under the view path of $module.
  • relative path (e.g. "index"): the actual view file will be looked for under $viewPath.

To determine which layout should be applied, the following two steps are conducted:

  1. In the first step, it determines the layout name and the context module:
  • If $layout is specified as a string, use it as the layout name and $module as the context module;
  • If $layout is null, search through all ancestor modules of this controller and find the first module whose layout is not null. The layout and the corresponding module are used as the layout name and the context module, respectively. If such a module is not found or the corresponding layout is not a string, it will return false, meaning no applicable layout.
  1. In the second step, it determines the actual layout file according to the previously found layout name and context module. The layout name can be:
  • a path alias (e.g. "@app/views/layouts/main");
  • an absolute path (e.g. "/main"): the layout name starts with a slash. The actual layout file will be looked for under the layout path of the application;
  • a relative path (e.g. "main"): the actual layout file will be looked for under the layout path of the context module.

If the layout name does not contain a file extension, it will use the default one .php.

public string render ( $view, $params = [] )
$view string

The view name.
$params array

The parameters (name-value pairs) that should be made available in the view. These parameters will not be available in the layout.
return string

The rendering result.
throws yii\base\InvalidArgumentException

if the view file or the layout file does not exist.

 

                public function render($view, $params = [])
{
    $content = $this->getView()->render($view, $params, $this);
    return $this->renderContent($content);
}
renderContent() public method (available since version 2.0.1)

Renders a static string by applying a layout.

public string renderContent ( $content )
$content string

The static string being rendered
return string

The rendering result of the layout with the given static string as the $content variable. If the layout is disabled, the string will be returned back.

 

                public function renderContent($content)
{
    $layoutFile = $this->findLayoutFile($this->getView());
    if ($layoutFile !== false) {
        return $this->getView()->renderFile($layoutFile, ['content' => $content], $this);
    }
    return $content;
}
renderFile() public method

Renders a view file.

public string renderFile ( $file, $params = [] )
$file string

The view file to be rendered. This can be either a file path or a path alias.
$params array

The parameters (name-value pairs) that should be made available in the view.
return string

The rendering result.
throws yii\base\InvalidArgumentException

if the view file does not exist.

 

                public function renderFile($file, $params = [])
{
    return $this->getView()->renderFile($file, $params, $this);
}
renderPartial() public method

Renders a view without applying layout.

This method differs from render() in that it does not apply any layout.

public string renderPartial ( $view, $params = [] )
$view string

The view name. Please refer to render() on how to specify a view name.
$params array

The parameters (name-value pairs) that should be made available in the view.
return string

The rendering result.
throws yii\base\InvalidArgumentException

if the view file does not exist.

 

                public function renderPartial($view, $params = [])
{
    return $this->getView()->render($view, $params, $this);
}
run() public method

Runs a request specified in terms of a route.

The route can be either an ID of an action within this controller or a complete route consisting of module IDs, controller ID and action ID. If the route starts with a slash '/', the parsing of the route will start from the application; otherwise, it will start from the parent module of this controller.

See also runAction().

public mixed run ( $route, $params = [] )
$route string

The route to be handled, e.g., 'view', 'comment/view', '/admin/comment/view'.
$params array

The parameters to be passed to the action.
return mixed

The result of the action.

 

                public function run($route, $params = [])
{
    $pos = strpos($route, '/');
    if ($pos === false) {
        return $this->runAction($route, $params);
    } elseif ($pos > 0) {
        return $this->module->runAction($route, $params);
    }
    return Yii::$app->runAction(ltrim($route, '/'), $params);
}
runAction() public method

Runs an action within this controller with the specified action ID and parameters.

If the action ID is empty, the method will use $defaultAction.

See also createAction().

public mixed runAction ( $id, $params = [] )
$id string

The ID of the action to be executed.
$params array

The parameters (name-value pairs) to be passed to the action.
return mixed

The result of the action.
throws yii\base\InvalidRouteException

if the requested action ID cannot be resolved into an action successfully.

 

                public function runAction($id, $params = [])
{
    $action = $this->createAction($id);
    if ($action === null) {
        throw new InvalidRouteException('Unable to resolve the request: ' . $this->getUniqueId() . '/' . $id);
    }
    Yii::debug('Route to run: ' . $action->getUniqueId(), __METHOD__);
    if (Yii::$app->requestedAction === null) {
        Yii::$app->requestedAction = $action;
    }
    $oldAction = $this->action;
    $this->action = $action;
    $modules = [];
    $runAction = true;
    // call beforeAction on modules
    foreach ($this->getModules() as $module) {
        if ($module->beforeAction($action)) {
            array_unshift($modules, $module);
        } else {
            $runAction = false;
            break;
        }
    }
    $result = null;
    if ($runAction && $this->beforeAction($action)) {
        // run the action
        $result = $action->runWithParams($params);
        $result = $this->afterAction($action, $result);
        // call afterAction on modules
        foreach ($modules as $module) {
            /* @var $module Module */
            $result = $module->afterAction($action, $result);
        }
    }
    if ($oldAction !== null) {
        $this->action = $oldAction;
    }
    return $result;
}
setView() public method

Sets the view object to be used by this controller.

public void setView ( $view )
$view yii\base\View|yii\web\View

The view object that can be used to render views or view files.

 

                public function setView($view)
{
    $this->_view = $view;
}
setViewPath() public method (available since version 2.0.7)

Sets the directory that contains the view files.

public void setViewPath ( $path )
$path string

The root directory of view files.
throws yii\base\InvalidArgumentException

if the directory is invalid

 

                public function setViewPath($path)
{
    $this->_viewPath = Yii::getAlias($path);
}
trigger() public method

Defined in: yii\base\Component::trigger()

Triggers an event.

This method represents the happening of an event. It invokes all attached handlers for the event including class-level handlers.

public void trigger ( $name, yii\base\Event $event = null )
$name string

The event name
$event yii\base\Event|null

The event instance. If not set, a default yii\base\Event object will be created.

 

                public function trigger($name, Event $event = null)
{
    $this->ensureBehaviors();
    $eventHandlers = [];
    foreach ($this->_eventWildcards as $wildcard => $handlers) {
        if (StringHelper::matchWildcard($wildcard, $name)) {
            $eventHandlers[] = $handlers;
        }
    }
    if (!empty($this->_events[$name])) {
        $eventHandlers[] = $this->_events[$name];
    }
    if (!empty($eventHandlers)) {
        $eventHandlers = call_user_func_array('array_merge', $eventHandlers);
        if ($event === null) {
            $event = new Event();
        }
        if ($event->sender === null) {
            $event->sender = $this;
        }
        $event->handled = false;
        $event->name = $name;
        foreach ($eventHandlers as $handler) {
            $event->data = $handler[1];
            call_user_func($handler[0], $event);
            // stop further handling if the event is handled
            if ($event->handled) {
                return;
            }
        }
    }
    // invoke class-level attached handlers
    Event::trigger($this, $name, $event);
}

Event Details

Hide inherited properties

EVENT_AFTER_ACTION event of type yii\base\ActionEvent

An event raised right after executing a controller action.

EVENT_BEFORE_ACTION event of type yii\base\ActionEvent

An event raised right before executing a controller action. You may set yii\base\ActionEvent::$isValid to be false to cancel the action execution.