Custom Eel Helpers

Eel Helpers provide methods that can be used inside of Eel expressions. That is mostly used to extend the capabilities for data-aquisition and processing of Fusion.

#Define the class

The first step is to create the EelHelper class. Every Helper has to implement the interface Neos\Eel\ProtectedContextAwareInterface.

Classes/Eel/Helper/ExampleHelper.php

#Register the helper

Afterwards the name of the Helper has to be registered for usage in Fusion in the Settings.yaml of the package:

Configuration/Settings.yaml
Neos:
  Fusion:
    defaultContext:
      'Vendor.Site.Example': 'Vendor\Site\Eel\Helper\ExampleHelper'

#Usage

In Fusion you can call the methods of the helper inside of EelExpressions:

fusion
exampleEelValue = ${Vendor.Site.Example.wrapInCurlyBrackets('Hello World')}