wip: dynamic services fields

src/Form/Service/ParticipantAdditionalServicesFieldHandler.php

@@ -50,6 +50,24 @@ class ParticipantAdditionalServicesFieldHandler extends AbstractParticipantField
         return ['dateOfBirth'];
     }
 
+    /**
+     * Determines if this handler should process the field based on submitted data.
+     *
+     * For service selection fields like additional services, we always need to process
+     * to handle cases where all selections are cleared (field not present in data).
+     * This ensures the participant DTO is updated with an empty array when no
+     * services are selected.
+     *
+     * @param array<string, mixed> $submittedData    The submitted participant form data
+     * @param int                  $participantIndex The index of the participant being processed
+     *
+     * @return bool Always returns true for service selection fields
+     */
+    public function shouldProcess(array $submittedData, int $participantIndex): bool
+    {
+        return true; // Always process to handle deselection cases
+    }
+
     /**
      * Processes the additionalServices field for a specific participant.
      *
@@ -154,7 +172,7 @@ class ParticipantAdditionalServicesFieldHandler extends AbstractParticipantField
 
         // Check if service has age constraints
         $ageEvaluator = new ServiceAgeEvaluator();
-        if (!$ageEvaluator->canEvaluate($service)) {
+        if (false === $ageEvaluator->canEvaluate($service)) {
             return true; // No age restrictions, service is valid
         }