Acts as a registry/factory for objects.
Provides registry & factory functionality for object types. Used as a super class for various composition based re-use features in CakePHP.
Each subclass needs to implement the various abstract methods to complete the template method load().
The ObjectRegistry is EventManager aware, but each extending class will need to use \Cake\Event\EventDispatcherTrait to attach and detach on set and bind
Cake\Controller\ComponentRegistry
Cake\View\HelperRegistry
Cake\Console\TaskRegistry
$_loaded
protected object[]
Normalizes an object array, creates an array that makes lazy loading easier
__get( string $name )
Provide public read access to the loaded objects
$name
__isset( string $name )
Provide isset access to _loaded
$name
_checkDuplicate( string $name , array $config )
Check for duplicate object loading.
If a duplicate is being loaded and has different configuration, that is bad and an exception will be raised.
An exception is raised, as replacing the object will not update any references other objects may have. Additionally, simply updating the runtime configuration is not a good option as we may be missing important constructor logic dependent on the configuration.
$name
$config
_create( string $class , string $alias , array $config )
Create an instance of a given classname.
This method should construct and do any other initialization logic required.
$class
$alias
$config
_resolveClassName( string $class )
Should resolve the classname for a given object type.
$class
_throwMissingClassError( string $class , string $plugin )
Throw an exception when the requested object name is missing.
$class
$plugin
get( string $name )
Get loaded object instance.
$name
has( string $name )
Check whether or not a given object is loaded.
$name
load( string $objectName , array $config [] )
Loads/constructs an object instance.
Will return the instance in the registry if it already exists. If a subclass provides event support, you can use $config['enabled'] = false
to exclude constructed objects from being registered for events.
Using Cake\Controller\Controller::$components as an example. You can alias an object by setting the 'className' key, i.e.,
public $components = [ 'Email' => [ 'className' => '\App\Controller\Component\AliasedEmailComponent' ]; ];
All calls to the Email
component would use AliasedEmail
instead.
$objectName
$config
optional [] normalizeArray( array $objects )
Normalizes an object array, creates an array that makes lazy loading easier
$objects
reset( )
Clear loaded instances in the registry.
If the registry subclass has an event manager, the objects will be detached from events as well.
set( string $objectName , object $object )
Set an object directly into the registry by name.
If this collection implements events, the passed object will be attached into the event manager
$objectName
$object
unload( string $objectName )
Remove an object from the registry.
If this registry has an event manager, the object will be detached from any events as well.
$objectName
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Licensed under the MIT License.
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https://api.cakephp.org/3.4/class-Cake.Core.ObjectRegistry.html