Of a document, but matches a certain route. User defined routes allow directing requests to certain detail pages, even though the request does not portray the path When working with object listings, user defined routes come in handy while implementing object detail views. Object listings also come with a built-in paginator that simplifies the display of results in a paged manner. Object listings are a simple way to retrieve objects from Pimcore while being able to filter and sort data along that Not only programmatically but also through the Pimcore object csv export. Moreover, data can be exported very easily Sorted, grouped and displayed intuitively by the use of an object listing. Once data is available in a structured manner, it can not only be accessed more conveniently but also be filtered, PHP-Class: DataObject\Product Object Listings When using your generated classes in the code, the classname always starts with a capital letter. $product = DataObject \ Product :: getB圜olor ( 'purple', 1, 0, ) or get data objects matching a defined set of object types (default is to fetch data objects and variants) $object = DataObject :: getByPath ( "/path/to/the/object" ) you can also get an object by id where you don't know the type $city = DataObject \ City :: getByZip ( 5020, 1 ) it's also possible to get an object by an foreign ID $myObject = DataObject \ Myclassname :: getById ( 167 ) * versionNote: note added to the version (see version tab) the optional parameter allows you to provide additional info $newObject -> setDescription ( "Some Text" ) A user-land implementation exists, but at a significant performance penalty.Ī PECL extension named weakref provided similar functionality, but it is no longer maintained.SetKey ( \ Pimcore \ Model \ Element \ Service :: getValidKey ( 'New Name', 'object' ) ) Weak Maps is a new feature in PHP 8.0, and unless there is a class with name WeakMapin the global namespace, there should not be any issues when upgrading an existing code base to PHP 8.0.īecause the WeakMap is an internal class, this functionality cannot be back-ported to prior PHP versions and make it work with the native garbage collector. When used as a cache storage, the object keys can be used to store a primitive state of the object, and reduce subsequent calls to an expensive function that is supposed to process or enhance the object.Īnother use case would be storage of completion data for a collection of objects, but without mutating the object itself.įor more examples of Weak Maps in PHP 8.0) along with code examples, see PHP WeakMap Practical Use Cases. Weak Maps can help with temporary storage of objects, but without affecting the memory usage due to the temporary storage itself. The iterator itself can be extracted with getIterator method, and the return value is an iterable. Var_dump($value) // var_dump('Object 1') WeakMap class implements Traversable interface, it can be used iterated with foreach construct.įurther, WeakMap implements IteratorAggregate that brings a WeakMap::getIterator method. Fatal error: Uncaught Exception: Unserialization of 'WeakMap' is not allowed in. If the object falls out of scope, so does the associated data.Ĭomplete Example class CommentRepository ' Weak Maps can help associate transient data for objects without changing the state of the object itself. WeakMap allows the object to be cleared, while splObjectStorage does not. New stdClass is used as the key, and it immediately falls out of scope. $map = new splObjectStorage() Ī more simplified example would be: $map = new splObjectStorage() With WeakMap, the references are weak, and the reference inside the WeakMap does not prevent the garbage collector from clearing the object if there are no other references to the object. Even though there is an unset($object) call, PHP's garbage collector does not clear it from memory because of the reference within the $map splObjectStorage. In the snippet above, splObjectStorage is used to store additional data about objects. However, a WeakMap does not prevent the object from being garbage collected. See PHP WeakMap Practical Use Cases: PECL extension for more information.Ī WeakMap is similar to SplObjectStorage, as in both WeakMap and splObjectStorage use objectss as the key, and allows storage of arbitrary values. Weak Maps in PHP 8.0 is different from the WeakMap class from the weakref PECL extension. Weak Maps is a new feature added in PHP 8.0.Ī WeakMap allows to store and associate arbitrary values for object keys, but without preventing the garbage collector from clearing the object if it falls out of scope in everywhere else.
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