FEATURE: Allow Eel-Helper in AbstractFinisher for parseOption()

Classes/Core/Model/AbstractFinisher.php

@@ -11,6 +11,10 @@
  * source code.
  */
 
+use Neos\Eel\CompilingEvaluator;
+use Neos\Eel\Utility;
+use Neos\Eel\Utility as EelUtility;
+use Neos\Flow\Annotations as Flow;
 use Neos\Utility\ObjectAccess;
 
 /**
@@ -20,6 +24,19 @@
  */
 abstract class AbstractFinisher implements FinisherInterface
 {
+
+    /**
+     * @Flow\Inject
+     * @var CompilingEvaluator
+     */
+    protected $eelEvaluator;
+
+    /**
+     * @Flow\InjectConfiguration
+     * @var array
+     */
+    protected $settings;
+
     /**
      * The options which have been set from the outside. Instead of directly
      * accessing them, you should rather use parseOption().
@@ -110,7 +127,20 @@ protected function parseOption($optionName)
             if (!is_string($option)) {
                 return $option;
             }
-            $option = preg_replace_callback('/{([^}]+)}/', function ($match) use ($formRuntime) {
+
+            $pregReplaceString = '/{([^}]+)}/';
+            $parseEel = false;
+            $allowEelParsingForOptions = $this->parseOption('allowEelParsingForOptions');
+            if (is_array($allowEelParsingForOptions) && key_exists($optionName, $allowEelParsingForOptions) && $allowEelParsingForOptions[$optionName] === true) {
+                $pregReplaceString = '/[{|\$]+([^}]+)}/';
+                $parseEel = true;
+            }
+
+            $option = preg_replace_callback($pregReplaceString, function ($match) use ($formRuntime, $parseEel) {
+                if ($parseEel && strpos($match[0], '${') === 0 && strpos($match[0], '}') === strlen($match[0]) - 1) {
+                    return Utility::evaluateEelExpression($match[0], $this->eelEvaluator, EelUtility::getDefaultContextVariables($this->settings['defaultContext']));
+                }
+
                 return ObjectAccess::getPropertyPath($formRuntime, $match[1]);
             }, $option);
             if ($option !== '') {

Configuration/Settings.yaml

@@ -1,6 +1,9 @@
 
 Neos:
   Form:
+    defaultContext:
+      String: Neos\Eel\Helper\StringHelper
+      Configuration: Neos\Eel\Helper\ConfigurationHelper
     yamlPersistenceManager:
       savePath: '%FLOW_PATH_DATA%Forms/'
     supertypeResolver:

Documentation/configuring-form-yaml.rst

@@ -83,11 +83,13 @@ The following YAML is stored as ``contact.yaml``:
         options:
           templatePathAndFilename: resource://AcmeCom.SomePackage/Private/Templates/Form/Contact.txt
           subject: '{subject}'
-          recipientAddress: 'info@acme.com'
+          recipientAddress: "${Configuration.setting('Foo.Bar.Site.Forms.contact.recipientAddress')}" # reads the recipient address from the configuration. See `allowEelParsingForOptions`
           recipientName: 'Acme Customer Care'
           senderAddress: '{email}'
           senderName: '{name}'
           format: plaintext
+          allowEelParsingForOptions:
+            recipientAddress: true # allow Eel parsing for these values (Security-Note: do not allow user-input options like `senderAddress` or `senderName`)
 
 .. note:: Instead of setting the ``templatePathAndFilename`` option to specify the Fluid template file for the EmailFinisher,
           the template source can also be set directly via the ``templateSource`` option.