CODEWITHSUNDEEP
typo3hook
forethought
forethought

Reputation: 3253

Creating an own hook in TYPO3

I am looking to create a hook for my own extension so that one of my other extension can use the function defined in the extension.

Does anyone know how to create a new hook for creating communication between two extension?

Upvotes: 1

Views: 302

Answers (1)

Daniel
Daniel

Reputation: 7016

Go for the Singal/Slot Pattern.

You can emit a signal in your code and register a slot that listens on that signal to hook into the process.

To emit a signal, inject the SignalSlotDispatcher:

/**
 * @var \TYPO3\CMS\Extbase\SignalSlot\Dispatcher
 * @inject
 */
protected $signalSlotDispatcher;

And in your code you can emit the signal like this:

$this->signalSlotDispatcher->dispatch(
    __CLASS__,
    'MySignalName',
    [$param1, $param2, $this]
);

In your 2nd extension you can register a slot that listens an that signal in your ext_localconf.php:

$signalSlotDispatcher = \TYPO3\CMS\Core\Utility
\GeneralUtility::makeInstance(TYPO3\CMS\Extbase\SignalSlot\Dispatcher::class);
$signalSlotDispatcher->connect(
    \Your\Class\With\The\Signal::class,
    'MySignalName',
    Your\Class\With\The\Slot::class,    
    'mySlotMethod',
    false
);

Then you implement mySlotMethod in the Slot Class and do your stuff.

EDIT: I wrote a more detailed tutorial on that Topic here.

Upvotes: 1

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