10000 Observer instead of Mediator pattern by ruff3d · Pull Request #9912 · symfony/symfony-docs · GitHub
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Observer instead of Mediator pattern #9912

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9492d50
Observer instead of Mediator pattern
Jun 11, 2018
8536c64
Update event_dispatcher.rst
ruff3d Jun 11, 2018
6c94ac8
Update event_dispatcher.rst
ruff3d Jun 11, 2018
a844c4d
Mention that the component implements both patterns
javiereguiluz Jun 25, 2018
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Mention that the component implements both patterns
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@javiereguiluz
javiereguiluz authored Jun 25, 2018
commit a844c4df4d8ae945137c7622376258c1c7a1162a
7 changes: 4 additions & 3 deletions components/event_dispatcher.rst
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Expand Up @@ -25,9 +25,9 @@ before or after a method is executed, without interfering with other plugins.
This is not an easy problem to solve with single inheritance, and even if
multiple inheritance was possible with PHP, it comes with its own drawbacks.

The Symfony EventDispatcher component implements the `Observer`_ pattern
in a simple and effective way to make all these things possible and to make
your projects truly extensible.
The Symfony EventDispatcher component implements the `Mediator`_ and `Observer`_
design patterns to make all these things possible and to make your projects
truly extensible.

Take a simple example from :doc:`the HttpKernel component </components/http_kernel>`.
Once a ``Response`` object has been created, it may be useful to allow other
Expand Down Expand Up @@ -516,6 +516,7 @@ Learn More
* :ref:`The kernel.event_listener tag <dic-tags-kernel-event-listener>`
* :ref:`The kernel.event_subscriber tag <dic-tags-kernel-event-subscriber>`

.. _Mediator: https://en.wikipedia.org/wiki/Mediator_pattern
.. _Observer: https://en.wikipedia.org/wiki/Observer_pattern
.. _Closures: https://php.net/manual/en/functions.anonymous.php
.. _PHP callable: https://php.net/manual/en/language.pseudo-types.php#language.types.callback
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