fix: validation error indication on cards

src/Controller/Booking/Create/Step2Controller.php

@@ -94,8 +94,10 @@ class Step2Controller extends AbstractController
             return $this->hxRedirect($request, $this->generateUrl('app_booking_create_step_3'));
         }
 
-        // Generate cards data
-        $cardsData = $this->generateAllCardsData($bookingCreateDto);
+        // Generate cards data with validation state if form was submitted and failed
+        $cardsData = (true === $form->isSubmitted() && false === $form->isValid())
+            ? $this->participantCardService->getAllCardsDataWithValidation($bookingCreateDto, ['booking_create'])
+            : $this->generateAllCardsData($bookingCreateDto);
 
         // Calculate summary data
         $summaryData = $this->calculateSummaryData($bookingCreateDto);

src/Service/ParticipantCardDataService.php

@@ -5,6 +5,8 @@ declare(strict_types=1);
 namespace App\Service;
 
 use App\Form\Model\BookingDto;
+use App\Form\Model\ParticipantEditDto;
+use Symfony\Component\Validator\Validator\ValidatorInterface;
 
 /**
  * Extracts card display data for participants in card-based booking flows.
@@ -16,13 +18,14 @@ class ParticipantCardDataService
 {
     public function __construct(
         private readonly BookingPriceCalculatorService $priceCalculator,
+        private readonly ValidatorInterface $validator,
     ) {
     }
 
     /**
      * Get card data for a single participant.
      *
-     * @return array{name: string, roomName: string, price: string}
+     * @return array{name: string, roomName: string, price: string, isCanceled: bool}
      */
     public function getCardData(BookingDto $bookingDto, int $index): array
     {
@@ -41,17 +44,21 @@ class ParticipantCardDataService
         // Calculate and format individual price
         $price = $this->getFormattedPrice($bookingDto, $index);
 
+        // Check if participant is canceled
+        $isCanceled = $participant->isCanceled();
+
         return [
             'name' => $name,
             'roomName' => $roomName,
             'price' => $price,
+            'isCanceled' => $isCanceled,
         ];
     }
 
     /**
      * Get card data for all participants.
      *
-     * @return array<int, array{name: string, roomName: string, price: string}>
+     * @return array<int, array{name: string, roomName: string, price: string, isCanceled: bool}>
      */
     public function getAllCardsData(BookingDto $bookingDto): array
     {
@@ -121,4 +128,59 @@ class ParticipantCardDataService
 
         return number_format($price, 2, ',', '.').' €';
     }
+
+    /**
+     * Get card data for a single participant with validation state.
+     *
+     * @return array{name: string, roomName: string, price: string, isCanceled: bool, isValid: bool, errorMessages: array<string>}
+     */
+    public function getCardDataWithValidation(BookingDto $bookingDto, int $index, array $validationGroups): array
+    {
+        $participant = $bookingDto->participants[$index] ?? null;
+
+        if (null === $participant) {
+            throw new \InvalidArgumentException(sprintf('Participant at index %d does not exist', $index));
+        }
+
+        // Get basic card data
+        $cardData = $this->getCardData($bookingDto, $index);
+
+        // Wrap participant for validation
+        $wrapper = new ParticipantEditDto(
+            participant: $participant,
+            bookingContext: $bookingDto,
+        );
+
+        // Validate the wrapper DTO
+        $violations = $this->validator->validate($wrapper, null, $validationGroups);
+
+        // Extract validation state
+        $isValid = 0 === count($violations);
+        $errorMessages = [];
+
+        foreach ($violations as $violation) {
+            $errorMessages[] = $violation->getMessage();
+        }
+
+        return array_merge($cardData, [
+            'isValid' => $isValid,
+            'errorMessages' => $errorMessages,
+        ]);
+    }
+
+    /**
+     * Get card data for all participants with validation state.
+     *
+     * @return array<int, array{name: string, roomName: string, price: string, isCanceled: bool, isValid: bool, errorMessages: array<string>}>
+     */
+    public function getAllCardsDataWithValidation(BookingDto $bookingDto, array $validationGroups): array
+    {
+        $cardsData = [];
+
+        foreach ($bookingDto->participants as $index => $participant) {
+            $cardsData[$index] = $this->getCardDataWithValidation($bookingDto, $index, $validationGroups);
+        }
+
+        return $cardsData;
+    }
 }