Class yii\base\Module
Inheritance | yii\base\Module » yii\di\ServiceLocator » yii\base\Component » yii\base\BaseObject |
---|---|
Implements | yii\base\Configurable |
Subclasses | yii\base\Application, yii\console\Application, yii\debug\Module, yii\gii\Module, yii\web\Application |
Available since version | 2.0 |
Source Code | https://github.com/yiisoft/yii2/blob/master/framework/base/Module.php |
Module is the base class for module and application classes.
A module represents a sub-application which contains MVC elements by itself, such as models, views, controllers, etc.
A module may consist of sub-modules.
Components may be registered with the module so that they are globally accessible within the module.
For more details and usage information on Module, see the guide article on modules.
Public Properties
Property | Type | Description | Defined By |
---|---|---|---|
$aliases | array | List of path aliases to be defined. | yii\base\Module |
$basePath | string | The root directory of the module. | yii\base\Module |
$behaviors | yii\base\Behavior[] | List of behaviors attached to this component. | yii\base\Component |
$components | array | The list of the component definitions or the loaded component instances (ID => definition or instance). | yii\di\ServiceLocator |
$controllerMap | array | Mapping from controller ID to controller configurations. | yii\base\Module |
$controllerNamespace | string|null | The namespace that controller classes are in. | yii\base\Module |
$controllerPath | string | The directory that contains the controller classes. | yii\base\Module |
$defaultRoute | string | The default route of this module. | yii\base\Module |
$id | string | An ID that uniquely identifies this module among other modules which have the same parent. | yii\base\Module |
$layout | string|boolean|null | The layout that should be applied for views within this module. | yii\base\Module |
$layoutPath | string | The root directory of layout files. | yii\base\Module |
$module | yii\base\Module|null | The parent module of this module. | yii\base\Module |
$modules | array | The modules (indexed by their IDs). | yii\base\Module |
$params | array | Custom module parameters (name => value). | yii\base\Module |
$uniqueId | string | The unique ID of the module. | yii\base\Module |
$version | string | The version of this module. | yii\base\Module |
$viewPath | string | The root directory of view files. | yii\base\Module |
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\Module |
__get() | Getter magic method. | yii\di\ServiceLocator |
__isset() | Checks if a property value is null. | yii\di\ServiceLocator |
__set() | Sets the value of a component property. | yii\base\Component |
__unset() | Sets a component property to be null. | yii\base\Component |
afterAction() | This method is invoked right after an action within this module is executed. | yii\base\Module |
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 within this module is executed. | yii\base\Module |
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 |
clear() | Removes the component from the locator. | yii\di\ServiceLocator |
createController() | Creates a controller instance based on the given route. | yii\base\Module |
createControllerByID() | Creates a controller based on the given controller ID. | yii\base\Module |
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 |
get() | Returns the component instance with the specified ID. | yii\base\Module |
getBasePath() | Returns the root directory of the module. | yii\base\Module |
getBehavior() | Returns the named behavior object. | yii\base\Component |
getBehaviors() | Returns all behaviors attached to this component. | yii\base\Component |
getComponents() | Returns the list of the component definitions or the loaded component instances. | yii\di\ServiceLocator |
getControllerPath() | Returns the directory that contains the controller classes according to $controllerNamespace. | yii\base\Module |
getInstance() | Returns the currently requested instance of this module class. | yii\base\Module |
getLayoutPath() | Returns the directory that contains layout view files for this module. | yii\base\Module |
getModule() | Retrieves the child module of the specified ID. | yii\base\Module |
getModules() | Returns the sub-modules in this module. | yii\base\Module |
getUniqueId() | Returns an ID that uniquely identifies this module among all modules within the current application. | yii\base\Module |
getVersion() | Returns current module version. | yii\base\Module |
getViewPath() | Returns the directory that contains the view files for this module. | yii\base\Module |
has() | Returns a value indicating whether the locator has the specified component definition or has instantiated the component. | yii\base\Module |
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 |
hasModule() | Checks whether the child module of the specified ID exists. | yii\base\Module |
hasProperty() | Returns a value indicating whether a property is defined for this component. | yii\base\Component |
init() | Initializes the module. | yii\base\Module |
off() | Detaches an existing event handler from this component. | yii\base\Component |
on() | Attaches an event handler to an event. | yii\base\Component |
runAction() | Runs a controller action specified by a route. | yii\base\Module |
set() | Registers a component definition with this locator. | yii\di\ServiceLocator |
setAliases() | Defines path aliases. | yii\base\Module |
setBasePath() | Sets the root directory of the module. | yii\base\Module |
setComponents() | Registers a set of component definitions in this locator. | yii\di\ServiceLocator |
setControllerPath() | Sets the directory that contains the controller classes. | yii\base\Module |
setInstance() | Sets the currently requested instance of this module class. | yii\base\Module |
setLayoutPath() | Sets the directory that contains the layout files. | yii\base\Module |
setModule() | Adds a sub-module to this module. | yii\base\Module |
setModules() | Registers sub-modules in the current module. | yii\base\Module |
setVersion() | Sets current module version. | yii\base\Module |
setViewPath() | Sets the directory that contains the view files. | yii\base\Module |
trigger() | Triggers an event. | yii\base\Component |
Protected Methods
Method | Description | Defined By |
---|---|---|
defaultVersion() | Returns default module version. | yii\base\Module |
Events
Event | Type | Description | Defined By |
---|---|---|---|
EVENT_AFTER_ACTION | yii\base\ActionEvent | An event raised after executing a controller action. | yii\base\Module |
EVENT_BEFORE_ACTION | yii\base\ActionEvent | An event raised before executing a controller action. | yii\base\Module |
Property Details
List of path aliases to be defined. The array keys are alias names (must
start with @
) and the array values are the corresponding paths or aliases. See setAliases() for an
example.
Mapping from controller ID to controller configurations.
Each name-value pair specifies the configuration of a single controller.
A controller configuration can be either a string or an array.
If the former, the string should be the fully qualified class name of the controller.
If the latter, the array must contain a class
element which specifies
the controller's fully qualified class name, and the rest of the name-value pairs
in the array are used to initialize the corresponding controller properties. For example,
[
'account' => 'app\controllers\UserController',
'article' => [
'class' => 'app\controllers\PostController',
'pageTitle' => 'something new',
],
]
The namespace that controller classes are in. This namespace will be used to load controller classes by prepending it to the controller class name.
If not set, it will use the controllers
sub-namespace under the namespace of this module.
For example, if the namespace of this module is foo\bar
, then the default
controller namespace would be foo\bar\controllers
.
See also the guide section on autoloading to learn more about defining namespaces and how classes are loaded.
The directory that contains the controller classes.
The default route of this module. Defaults to default
.
The route may consist of child module ID, controller ID, and/or action ID.
For example, help
, post/create
, admin/post/create
.
If action ID is not given, it will take the default value as specified in
yii\base\Controller::$defaultAction.
An ID that uniquely identifies this module among other modules which have the same parent.
The layout that should be applied for views within this module. This refers to a view name
relative to $layoutPath. If this is not set, it means the layout value of the parent module
will be taken. If this is false
, layout will be disabled within this module.
The root directory of layout files. Defaults to "$viewPath/layouts".
The parent module of this module. null
if this module does not have a parent.
The version of this module. Note that the type of this property differs in getter and setter. See getVersion() and setVersion() for details.
Method Details
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()");
}
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;
}
Constructor.
public void __construct ( $id, $parent = null, $config = [] ) | ||
$id | string |
The ID of this module. |
$parent | yii\base\Module|null |
The parent module (if any). |
$config | array |
Name-value pairs that will be used to initialize the object properties. |
public function __construct($id, $parent = null, $config = [])
{
$this->id = $id;
$this->module = $parent;
parent::__construct($config);
}
Defined in: yii\di\ServiceLocator::__get()
Getter magic method.
This method is overridden to support accessing components like reading properties.
public mixed __get ( $name ) | ||
$name | string |
Component or property name |
return | mixed |
The named property value |
---|
public function __get($name)
{
if ($this->has($name)) {
return $this->get($name);
}
return parent::__get($name);
}
Defined in: yii\di\ServiceLocator::__isset()
Checks if a property value is null.
This method overrides the parent implementation by checking if the named component is loaded.
public boolean __isset ( $name ) | ||
$name | string |
The property name or the event name |
return | boolean |
Whether the property value is null |
---|
public function __isset($name)
{
if ($this->has($name)) {
return true;
}
return parent::__isset($name);
}
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) . '::' . $name);
}
Defined in: yii\base\Component::__unset()
Sets a component property to be null.
This method will check in the following order and act accordingly:
- a property defined by a setter: set the property value to be null
- a property of a behavior: set the property value to be null
Do not call this method directly as it is a PHP magic method that
will be implicitly called when executing unset($component->property)
.
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) . '::' . $name);
}
This method is invoked right after an action within this module is executed.
The method will trigger the EVENT_AFTER_ACTION event. The return value of the method will be used as the action return value.
If you override this method, your code should look like the following:
public function afterAction($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;
}
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);
}
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, $behavior);
}
}
This method is invoked right before an action within this module is executed.
The method will trigger the EVENT_BEFORE_ACTION event. The return value of the method will determine whether the action should continue to run.
In case the action should not run, the request should be handled inside of the beforeAction
code
by either providing the necessary output or redirecting the request. Otherwise the response will be empty.
If you override this method, your code should look like the following:
public function beforeAction($action)
{
if (!parent::beforeAction($action)) {
return false;
}
// your custom code here
return true; // or false to not run the action
}
public boolean beforeAction ( $action ) | ||
$action | yii\base\Action |
The action to be executed. |
return | boolean |
Whether the action should continue to be executed. |
---|
public function beforeAction($action)
{
$event = new ActionEvent($action);
$this->trigger(self::EVENT_BEFORE_ACTION, $event);
return $event->isValid;
}
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 [];
}
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;
}
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;
}
::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();
}
Defined in: yii\di\ServiceLocator::clear()
Removes the component from the locator.
public void clear ( $id ) | ||
$id | string |
The component ID |
public function clear($id)
{
unset($this->_definitions[$id], $this->_components[$id]);
}
Creates a controller instance based on the given route.
The route should be relative to this module. The method implements the following algorithm to resolve the given route:
- If the route is empty, use $defaultRoute;
- If the first segment of the route is found in $controllerMap, create a controller based on the corresponding configuration found in $controllerMap;
- If the first segment of the route is a valid module ID as declared in $modules,
call the module's
createController()
with the rest part of the route; - The given route is in the format of
abc/def/xyz
. Try eitherabc\DefController
orabc\def\XyzController
class within the controller namespace.
If any of the above steps resolves into a controller, it is returned together with the rest
part of the route which will be treated as the action ID. Otherwise, false
will be returned.
public array|boolean createController ( $route ) | ||
$route | string |
The route consisting of module, controller and action IDs. |
return | array|boolean |
If the controller is created successfully, it will be returned together
with the requested action ID. Otherwise |
---|---|---|
throws | yii\base\InvalidConfigException |
if the controller class and its file do not match. |
public function createController($route)
{
if ($route === '') {
$route = $this->defaultRoute;
}
// double slashes or leading/ending slashes may cause substr problem
$route = trim($route, '/');
if (strpos($route, '//') !== false) {
return false;
}
if (strpos($route, '/') !== false) {
list($id, $route) = explode('/', $route, 2);
} else {
$id = $route;
$route = '';
}
// module and controller map take precedence
if (isset($this->controllerMap[$id])) {
$controller = Yii::createObject($this->controllerMap[$id], [$id, $this]);
return [$controller, $route];
}
$module = $this->getModule($id);
if ($module !== null) {
return $module->createController($route);
}
if (($pos = strrpos($route, '/')) !== false) {
$id .= '/' . substr($route, 0, $pos);
$route = substr($route, $pos + 1);
}
$controller = $this->createControllerByID($id);
if ($controller === null && $route !== '') {
$controller = $this->createControllerByID($id . '/' . $route);
$route = '';
}
return $controller === null ? false : [$controller, $route];
}
Creates a controller based on the given controller ID.
The controller ID is relative to this module. The controller class should be namespaced under $controllerNamespace.
Note that this method does not check $modules or $controllerMap.
public yii\base\Controller|null createControllerByID ( $id ) | ||
$id | string |
The controller ID. |
return | yii\base\Controller|null |
The newly created controller instance, or |
---|---|---|
throws | yii\base\InvalidConfigException |
if the controller class and its file name do not match. This exception is only thrown when in debug mode. |
public function createControllerByID($id)
{
$pos = strrpos($id, '/');
if ($pos === false) {
$prefix = '';
$className = $id;
} else {
$prefix = substr($id, 0, $pos + 1);
$className = substr($id, $pos + 1);
}
if ($this->isIncorrectClassNameOrPrefix($className, $prefix)) {
return null;
}
$className = preg_replace_callback('%-([a-z0-9_])%i', function ($matches) {
return ucfirst($matches[1]);
}, ucfirst($className)) . 'Controller';
$className = ltrim($this->controllerNamespace . '\\' . str_replace('/', '\\', $prefix) . $className, '\\');
if (strpos($className, '-') !== false || !class_exists($className)) {
return null;
}
if (is_subclass_of($className, 'yii\base\Controller')) {
$controller = Yii::createObject($className, [$id, $this]);
return get_class($controller) === $className ? $controller : null;
} elseif (YII_DEBUG) {
throw new InvalidConfigException('Controller class must extend from \\yii\\base\\Controller.');
}
return null;
}
Returns default module version.
Child class may override this method to provide more specific version detection.
protected string defaultVersion ( ) | ||
return | string |
The version of this module. |
---|
protected function defaultVersion()
{
if ($this->module === null) {
return '1.0';
}
return $this->module->getVersion();
}
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;
}
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);
}
}
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);
}
}
}
Returns the component instance with the specified ID.
Since version 2.0.13, if a component isn't defined in the module, it will be looked up in the parent module. The parent module may be the application.
public object|null get ( $id, $throwException = true ) | ||
$id | string |
Component ID (e.g. |
$throwException | boolean |
Whether to throw an exception if |
return | object|null |
The component of the specified ID. If |
---|---|---|
throws | yii\base\InvalidConfigException |
if |
public function get($id, $throwException = true)
{
if (!isset($this->module)) {
return parent::get($id, $throwException);
}
$component = parent::get($id, false);
if ($component === null) {
$component = $this->module->get($id, $throwException);
}
return $component;
}
Returns the root directory of the module.
It defaults to the directory containing the module class file.
public string getBasePath ( ) | ||
return | string |
The root directory of the module. |
---|
public function getBasePath()
{
if ($this->_basePath === null) {
$class = new \ReflectionClass($this);
$this->_basePath = dirname($class->getFileName());
}
return $this->_basePath;
}
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;
}
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;
}
Defined in: yii\di\ServiceLocator::getComponents()
Returns the list of the component definitions or the loaded component instances.
public array getComponents ( $returnDefinitions = true ) | ||
$returnDefinitions | boolean |
Whether to return component definitions instead of the loaded component instances. |
return | array |
The list of the component definitions or the loaded component instances (ID => definition or instance). |
---|
public function getComponents($returnDefinitions = true)
{
return $returnDefinitions ? $this->_definitions : $this->_components;
}
Returns the directory that contains the controller classes according to $controllerNamespace.
Note that in order for this method to return a value, you must define an alias for the root namespace of $controllerNamespace.
public string getControllerPath ( ) | ||
return | string |
The directory that contains the controller classes. |
---|---|---|
throws | yii\base\InvalidArgumentException |
if there is no alias defined for the root namespace of $controllerNamespace. |
public function getControllerPath()
{
if ($this->_controllerPath === null) {
$this->_controllerPath = Yii::getAlias('@' . str_replace('\\', '/', $this->controllerNamespace));
}
return $this->_controllerPath;
}
Returns the currently requested instance of this module class.
If the module class is not currently requested, null
will be returned.
This method is provided so that you access the module instance from anywhere within the module.
public static static|null getInstance ( ) | ||
return | yii\base\Module|null |
The currently requested instance of this module class, or |
---|
public static function getInstance()
{
$class = get_called_class();
return isset(Yii::$app->loadedModules[$class]) ? Yii::$app->loadedModules[$class] : null;
}
Returns the directory that contains layout view files for this module.
public string getLayoutPath ( ) | ||
return | string |
The root directory of layout files. Defaults to "$viewPath/layouts". |
---|
public function getLayoutPath()
{
if ($this->_layoutPath === null) {
$this->_layoutPath = $this->getViewPath() . DIRECTORY_SEPARATOR . 'layouts';
}
return $this->_layoutPath;
}
Retrieves the child module of the specified ID.
This method supports retrieving both child modules and grand child modules.
See also hasModule().
public yii\base\Module|null getModule ( $id, $load = true ) | ||
$id | string |
Module ID (case-sensitive). To retrieve grand child modules,
use ID path relative to this module (e.g. |
$load | boolean |
Whether to load the module if it is not yet loaded. |
return | yii\base\Module|null |
The module instance, |
---|
public function getModule($id, $load = true)
{
if (($pos = strpos($id, '/')) !== false) {
// sub-module
$module = $this->getModule(substr($id, 0, $pos));
return $module === null ? null : $module->getModule(substr($id, $pos + 1), $load);
}
if (isset($this->_modules[$id])) {
if ($this->_modules[$id] instanceof self) {
return $this->_modules[$id];
} elseif ($load) {
Yii::debug("Loading module: $id", __METHOD__);
/* @var $module Module */
$module = Yii::createObject($this->_modules[$id], [$id, $this]);
$module::setInstance($module);
return $this->_modules[$id] = $module;
}
}
return null;
}
Returns the sub-modules in this module.
public array getModules ( $loadedOnly = false ) | ||
$loadedOnly | boolean |
Whether to return the loaded sub-modules only. If this is set |
return | array |
The modules (indexed by their IDs). |
---|
public function getModules($loadedOnly = false)
{
if ($loadedOnly) {
$modules = [];
foreach ($this->_modules as $module) {
if ($module instanceof self) {
$modules[] = $module;
}
}
return $modules;
}
return $this->_modules;
}
Returns an ID that uniquely identifies this module among all modules within the current application.
Note that if the module is an application, an empty string will be returned.
public string getUniqueId ( ) | ||
return | string |
The unique ID of the module. |
---|
public function getUniqueId()
{
return $this->module ? ltrim($this->module->getUniqueId() . '/' . $this->id, '/') : $this->id;
}
Returns current module version.
If version is not explicitly set, defaultVersion() method will be used to determine its value.
public string getVersion ( ) | ||
return | string |
The version of this module. |
---|
public function getVersion()
{
if ($this->_version === null) {
$this->_version = $this->defaultVersion();
} else {
if (!is_scalar($this->_version)) {
$this->_version = call_user_func($this->_version, $this);
}
}
return $this->_version;
}
Returns the directory that contains the view files for this module.
public string getViewPath ( ) | ||
return | string |
The root directory of view files. Defaults to "$basePath/views". |
---|
public function getViewPath()
{
if ($this->_viewPath === null) {
$this->_viewPath = $this->getBasePath() . DIRECTORY_SEPARATOR . 'views';
}
return $this->_viewPath;
}
Returns a value indicating whether the locator has the specified component definition or has instantiated the component.
Since version 2.0.13, if a component isn't defined in the module, it will be looked up in the parent module. The parent module may be the application.
This method may return different results depending on the value of $checkInstance
.
- If
$checkInstance
is false (default), the method will return a value indicating whether the locator has the specified component definition. - If
$checkInstance
is true, the method will return a value indicating whether the locator has instantiated the specified component.
public boolean has ( $id, $checkInstance = false ) | ||
$id | string |
Component ID (e.g. |
$checkInstance | boolean |
Whether the method should check if the component is shared and instantiated. |
return | boolean |
Whether the locator has the specified component definition or has instantiated the component. |
---|
public function has($id, $checkInstance = false)
{
return parent::has($id, $checkInstance) || (isset($this->module) && $this->module->has($id, $checkInstance));
}
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);
}
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;
}
Checks whether the child module of the specified ID exists.
This method supports checking the existence of both child and grand child modules.
public boolean hasModule ( $id ) | ||
$id | string |
Module ID. For grand child modules, use ID path relative to this module (e.g. |
return | boolean |
Whether the named module exists. Both loaded and unloaded modules are considered. |
---|
public function hasModule($id)
{
if (($pos = strpos($id, '/')) !== false) {
// sub-module
$module = $this->getModule(substr($id, 0, $pos));
return $module === null ? false : $module->hasModule(substr($id, $pos + 1));
}
return isset($this->_modules[$id]);
}
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);
}
Initializes the module.
This method is called after the module is created and initialized with property values given in configuration. The default implementation will initialize $controllerNamespace if it is not set.
If you override this method, please make sure you call the parent implementation.
public void init ( ) |
public function init()
{
if ($this->controllerNamespace === null) {
$class = get_class($this);
if (($pos = strrpos($class, '\\')) !== false) {
$this->controllerNamespace = substr($class, 0, $pos) . '\\controllers';
}
}
}
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 $removed;
}
Defined in: yii\base\Component::on()
Attaches an event handler to an event.
The event handler must be a valid PHP callback. The following are some examples:
function ($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]);
}
}
Runs a controller action specified by a route.
This method parses the specified route and creates the corresponding child module(s), controller and action instances. It then calls yii\base\Controller::runAction() to run the action with the given parameters. If the route is empty, the method will use $defaultRoute.
public mixed runAction ( $route, $params = [] ) | ||
$route | string |
The route that specifies the action. |
$params | array |
The parameters to be passed to the action |
return | mixed |
The result of the action. |
---|---|---|
throws | yii\base\InvalidRouteException |
if the requested route cannot be resolved into an action successfully. |
public function runAction($route, $params = [])
{
$parts = $this->createController($route);
if (is_array($parts)) {
/* @var $controller Controller */
list($controller, $actionID) = $parts;
$oldController = Yii::$app->controller;
Yii::$app->controller = $controller;
$result = $controller->runAction($actionID, $params);
if ($oldController !== null) {
Yii::$app->controller = $oldController;
}
return $result;
}
$id = $this->getUniqueId();
throw new InvalidRouteException('Unable to resolve the request "' . ($id === '' ? $route : $id . '/' . $route) . '".');
}
Defined in: yii\di\ServiceLocator::set()
Registers a component definition with this locator.
For example,
// a class name
$locator->set('cache', 'yii\caching\FileCache');
// a configuration array
$locator->set('db', [
'class' => 'yii\db\Connection',
'dsn' => 'mysql:host=127.0.0.1;dbname=demo',
'username' => 'root',
'password' => '',
'charset' => 'utf8',
]);
// an anonymous function
$locator->set('cache', function ($params) {
return new \yii\caching\FileCache;
});
// an instance
$locator->set('cache', new \yii\caching\FileCache);
If a component definition with the same ID already exists, it will be overwritten.
public void set ( $id, $definition ) | ||
$id | string |
Component ID (e.g. |
$definition | mixed |
The component definition to be registered with this locator. It can be one of the following:
|
throws | yii\base\InvalidConfigException |
if the definition is an invalid configuration array |
---|
public function set($id, $definition)
{
unset($this->_components[$id]);
if ($definition === null) {
unset($this->_definitions[$id]);
return;
}
if (is_object($definition) || is_callable($definition, true)) {
// an object, a class name, or a PHP callable
$this->_definitions[$id] = $definition;
} elseif (is_array($definition)) {
// a configuration array
if (isset($definition['__class'])) {
$this->_definitions[$id] = $definition;
$this->_definitions[$id]['class'] = $definition['__class'];
unset($this->_definitions[$id]['__class']);
} elseif (isset($definition['class'])) {
$this->_definitions[$id] = $definition;
} else {
throw new InvalidConfigException("The configuration for the \"$id\" component must contain a \"class\" element.");
}
} else {
throw new InvalidConfigException("Unexpected configuration type for the \"$id\" component: " . gettype($definition));
}
}
Defines path aliases.
This method calls Yii::setAlias() to register the path aliases. This method is provided so that you can define path aliases when configuring a module.
public void setAliases ( $aliases ) | ||
$aliases | array |
List of path aliases to be defined. The array keys are alias names
(must start with
|
public function setAliases($aliases)
{
foreach ($aliases as $name => $alias) {
Yii::setAlias($name, $alias);
}
}
Sets the root directory of the module.
This method can only be invoked at the beginning of the constructor.
public void setBasePath ( $path ) | ||
$path | string |
The root directory of the module. This can be either a directory name or a path alias. |
throws | yii\base\InvalidArgumentException |
if the directory does not exist. |
---|
public function setBasePath($path)
{
$path = Yii::getAlias($path);
$p = strncmp($path, 'phar://', 7) === 0 ? $path : realpath($path);
if (is_string($p) && is_dir($p)) {
$this->_basePath = $p;
} else {
throw new InvalidArgumentException("The directory does not exist: $path");
}
}
Defined in: yii\di\ServiceLocator::setComponents()
Registers a set of component definitions in this locator.
This is the bulk version of set(). The parameter should be an array whose keys are component IDs and values the corresponding component definitions.
For more details on how to specify component IDs and definitions, please refer to set().
If a component definition with the same ID already exists, it will be overwritten.
The following is an example for registering two component definitions:
[
'db' => [
'class' => 'yii\db\Connection',
'dsn' => 'sqlite:path/to/file.db',
],
'cache' => [
'class' => 'yii\caching\DbCache',
'db' => 'db',
],
]
public void setComponents ( $components ) | ||
$components | array |
Component definitions or instances |
public function setComponents($components)
{
foreach ($components as $id => $component) {
$this->set($id, $component);
}
}
Sets the directory that contains the controller classes.
public void setControllerPath ( $path ) | ||
$path | string |
The root directory that contains the controller classes. |
throws | yii\base\InvalidArgumentException |
if the directory is invalid. |
---|
public function setControllerPath($path)
{
$this->_controllerPath = Yii::getAlias($path);
}
Sets the currently requested instance of this module class.
public static void setInstance ( $instance ) | ||
$instance | yii\base\Module|null |
The currently requested instance of this module class.
If it is |
public static function setInstance($instance)
{
if ($instance === null) {
unset(Yii::$app->loadedModules[get_called_class()]);
} else {
Yii::$app->loadedModules[get_class($instance)] = $instance;
}
}
Sets the directory that contains the layout files.
public void setLayoutPath ( $path ) | ||
$path | string |
The root directory or path alias of layout files. |
throws | yii\base\InvalidArgumentException |
if the directory is invalid |
---|
public function setLayoutPath($path)
{
$this->_layoutPath = Yii::getAlias($path);
}
Adds a sub-module to this module.
public void setModule ( $id, $module ) | ||
$id | string |
Module ID. |
$module | yii\base\Module|array|null |
The sub-module to be added to this module. This can be one of the following:
|
public function setModule($id, $module)
{
if ($module === null) {
unset($this->_modules[$id]);
} else {
$this->_modules[$id] = $module;
if ($module instanceof self) {
$module->module = $this;
}
}
}
Registers sub-modules in the current module.
Each sub-module should be specified as a name-value pair, where name refers to the ID of the module and value the module or a configuration array that can be used to create the module. In the latter case, Yii::createObject() will be used to create the module.
If a new sub-module has the same ID as an existing one, the existing one will be overwritten silently.
The following is an example for registering two sub-modules:
[
'comment' => [
'class' => 'app\modules\comment\CommentModule',
'db' => 'db',
],
'booking' => ['class' => 'app\modules\booking\BookingModule'],
]
public void setModules ( $modules ) | ||
$modules | array |
Modules (id => module configuration or instances). |
public function setModules($modules)
{
foreach ($modules as $id => $module) {
$this->_modules[$id] = $module;
if ($module instanceof self) {
$module->module = $this;
}
}
}
Sets current module version.
public void setVersion ( $version ) | ||
$version | string|callable|null |
The version of this module. Version can be specified as a PHP callback, which can accept module instance as an argument and should return the actual version. For example:
|
public function setVersion($version)
{
$this->_version = $version;
}
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);
}
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, $event);
}
Event Details
An event raised after executing a controller action.
An event raised before executing a controller action.
You may set yii\base\ActionEvent::$isValid to be false
to cancel the action execution.