Event addons bookable

app/Domains/Event/Actions/SetEventAddons/SetEventAddonsCommand.php

@@ -0,0 +1,85 @@
+<?php
+
+namespace App\Domains\Event\Actions\SetEventAddons;
+
+use App\ValueObjects\Amount;
+use Illuminate\Support\Str;
+
+class SetEventAddonsCommand
+{
+    public function __construct(private SetEventAddonsRequest $request)
+    {
+    }
+
+    public function execute(): SetEventAddonsResponse
+    {
+        $response = new SetEventAddonsResponse();
+
+        $this->request->event->addons = $this->normalize($this->request->addons);
+        $this->request->event->save();
+
+        $response->success = true;
+        return $response;
+    }
+
+    /**
+     * Normalisiert die rohe Addon-Definition: trimmt Titel/Beschreibung, parst den Preis (≥ 0), erzwingt den
+     * Titel als Pflichtfeld und generiert stabile Keys (Bestandsschutz für bereits gespeicherte Buchungen).
+     *
+     * @param array<int, array<string, mixed>> $addons
+     * @return array<int, array{key: string, title: string, description: string, price: float, flat: bool}>
+     */
+    private function normalize(array $addons): array
+    {
+        $normalized = [];
+        $usedKeys = [];
+
+        foreach ($addons as $addon) {
+            $title = trim((string)($addon['title'] ?? ''));
+            if ($title === '') {
+                continue;
+            }
+
+            $price = Amount::fromString((string)($addon['price'] ?? '0'))->getAmount();
+            if ($price < 0) {
+                $price = 0.0;
+            }
+
+            $key = $this->uniqueSlug((string)($addon['key'] ?? ''), $title, $usedKeys);
+            $usedKeys[] = $key;
+
+            $normalized[] = [
+                'key' => $key,
+                'title' => $title,
+                'description' => trim((string)($addon['description'] ?? '')),
+                'price' => round($price, 2),
+                'flat' => (bool)($addon['flat'] ?? false),
+            ];
+        }
+
+        return $normalized;
+    }
+
+    /**
+     * Liefert einen eindeutigen Slug: bevorzugt den bestehenden Wert, sonst aus dem Titel abgeleitet;
+     * Kollisionen werden durchnummeriert.
+     *
+     * @param array<int, string> $used
+     */
+    private function uniqueSlug(string $existing, string $title, array $used): string
+    {
+        $base = $existing !== '' ? $existing : Str::slug($title);
+        if ($base === '') {
+            $base = 'addon';
+        }
+
+        $candidate = $base;
+        $suffix = 2;
+        while (in_array($candidate, $used, true)) {
+            $candidate = $base . '-' . $suffix;
+            $suffix++;
+        }
+
+        return $candidate;
+    }
+}

app/Domains/Event/Actions/SetEventAddons/SetEventAddonsRequest.php

@@ -0,0 +1,19 @@
+<?php
+
+namespace App\Domains\Event\Actions\SetEventAddons;
+
+use App\Models\Event;
+
+class SetEventAddonsRequest
+{
+    public Event $event;
+
+    /** @var array<int, array<string, mixed>> Rohe Addon-Definition aus dem Admin-Panel. */
+    public array $addons;
+
+    public function __construct(Event $event, array $addons)
+    {
+        $this->event = $event;
+        $this->addons = $addons;
+    }
+}

app/Domains/Event/Actions/SetEventAddons/SetEventAddonsResponse.php

@@ -0,0 +1,15 @@
+<?php
+
+namespace App\Domains\Event\Actions\SetEventAddons;
+
+class SetEventAddonsResponse
+{
+    public bool $success;
+    public ?string $message;
+
+    public function __construct()
+    {
+        $this->success = false;
+        $this->message = null;
+    }
+}

app/Domains/Event/Actions/SignUp/SignUpCommand.php

@@ -89,11 +89,32 @@ class SignUpCommand {
         );
 
         $this->persistParticipationOptions($response->participant, $participationOptionRows);
+        $this->persistAddons($response->participant);
 
         $response->success = true;
         return $response;
     }
 
+    /**
+     * Speichert die gewählten Zusätze (Event-Addons) als Snapshot-Zeilen (Titel/Preis/Betrag) für die spätere
+     * Rechnung. Die Beträge sind bereits in der Controller-Auflösung (`resolveAddons`) berechnet, inkl. USt.
+     */
+    private function persistAddons(\App\Models\EventParticipant $participant): void
+    {
+        foreach ($this->request->addonItems as $item) {
+            $participant->selectedAddons()->create([
+                'tenant' => $this->request->event->tenant,
+                'event_id' => $this->request->event->id,
+                'addon_key' => $item['key'],
+                'title' => $item['title'],
+                'price' => $item['price'] ?? 0,
+                'flat' => (bool)($item['flat'] ?? false),
+                'days' => $item['days'] ?? 0,
+                'amount' => $item['amount'] ?? 0,
+            ]);
+        }
+    }
+
     /**
      * Validiert die Antworten gegen die am Event definierten Teilnahmeoptionen und erzeugt die zu speichernden
      * Zeilen mit Label-Snapshots. Gibt null zurück, wenn eine Pflicht-Frage unbeantwortet oder eine Antwort

app/Domains/Event/Actions/SignUp/SignUpRequest.php

@@ -48,6 +48,8 @@ class SignUpRequest {
         public array $paymentOptions = [],
         /** Antworten auf die Teilnahmeoptionen: [ question_key => value ]. */
         public array $participationOptions = [],
+        /** Aufgelöste Zusätze (Event-Addons): je Eintrag [ key, title, price, flat, days, amount ]. */
+        public array $addonItems = [],
     ) {
     }
 }

app/Domains/Event/Actions/UpdateParticipant/UpdateParticipantCommand.php

@@ -77,11 +77,45 @@ class UpdateParticipantCommand {
             $this->syncParticipationOptions($p);
         }
 
+        if ($this->request->selectedAddons !== null) {
+            $this->syncAddons($p);
+        }
+
         $this->response->success = true;
         $this->response->participant = $p;
         return $this->response;
     }
 
+    /**
+     * Ersetzt die zugeordneten Zusätze (Event-Addons) anhand der Auswahl. Bewusst **ohne Preis/Betrag**
+     * (amount 0): der Teilnahmebeitrag wird in den Details ohnehin manuell gesetzt. Es wird nur der Titel als
+     * Snapshot gespeichert, damit die Zuordnung sichtbar bleibt.
+     */
+    private function syncAddons(EventParticipant $participant): void
+    {
+        $participant->selectedAddons()->delete();
+
+        $selection = $this->request->selectedAddons ?? [];
+
+        foreach ($participant->event?->addons ?? [] as $addon) {
+            $key = $addon['key'] ?? null;
+            if ($key === null || empty($selection[$key])) {
+                continue;
+            }
+
+            $participant->selectedAddons()->create([
+                'tenant' => $participant->tenant,
+                'event_id' => $participant->event_id,
+                'addon_key' => $key,
+                'title' => $addon['title'] ?? $key,
+                'price' => 0,
+                'flat' => (bool)($addon['flat'] ?? false),
+                'days' => 0,
+                'amount' => 0,
+            ]);
+        }
+    }
+
     /**
      * Ersetzt die zugeordneten Teilnahmeoptionen anhand der übergebenen Antworten. Nachträgliche Zuordnung im
      * Back-Office ist lückenlos möglich: nur gegen die Event-Definition gültige Antworten werden gespeichert,

app/Domains/Event/Actions/UpdateParticipant/UpdateParticipantRequest.php

@@ -38,5 +38,7 @@ class UpdateParticipantRequest {
         public string $cocStatus,
         /** Antworten auf die Teilnahmeoptionen: [ question_key => value ]. null = unverändert lassen. */
         public ?array $participationOptions = null,
+        /** Gewählte Zusätze: [ addon_key => bool ]. null = unverändert lassen. */
+        public ?array $selectedAddons = null,
     ) {}
 }

app/Domains/Event/Controllers/DetailsController.php

@@ -2,6 +2,8 @@
 
 namespace App\Domains\Event\Controllers;
 
+use App\Domains\Event\Actions\SetEventAddons\SetEventAddonsCommand;
+use App\Domains\Event\Actions\SetEventAddons\SetEventAddonsRequest;
 use App\Domains\Event\Actions\SetParticipationFees\SetParticipationFeesCommand;
 use App\Domains\Event\Actions\SetParticipationFees\SetParticipationFeesRequest;
 use App\Domains\Event\Actions\SetParticipationOptions\SetParticipationOptionsCommand;
@@ -155,6 +157,17 @@ class DetailsController extends CommonController {
         return response()->json(['status' => $response->success ? 'success' : 'error', 'message' => $response->message]);
     }
 
+    public function updateEventAddons(int $eventId, Request $request): JsonResponse
+    {
+        $event = $this->events->getById($eventId);
+
+        $setRequest = new SetEventAddonsRequest($event, (array)$request->input('addons', []));
+        $setCommand = new SetEventAddonsCommand($setRequest);
+        $response = $setCommand->execute();
+
+        return response()->json(['status' => $response->success ? 'success' : 'error', 'message' => $response->message]);
+    }
+
     public function downloadPdfList(string $eventId, string $listType, Request $request): Response
     {
         $event = $this->events->getByIdentifier($eventId);

app/Domains/Event/Controllers/ParticipantUpdateController.php

@@ -45,6 +45,7 @@ class ParticipantUpdateController extends CommonController {
             amountExpected: $request->input('amountExpected'),
             cocStatus: $request->input('cocStatus'),
             participationOptions: $request->has('participationOptions') ? (array)$request->input('participationOptions') : null,
+            selectedAddons: $request->has('selectedAddons') ? (array)$request->input('selectedAddons') : null,
         );
 
         $command = new UpdateParticipantCommand($updateRequest);

app/Domains/Event/Controllers/SignupController.php

@@ -104,6 +104,11 @@ class SignupController extends CommonController {
             $siblingReduction
         );
 
+        // Gewählte Zusätze (Event-Addons) auflösen und auf den Gesamtbetrag aufaddieren.
+        $selectedAddonKeys = array_keys(array_filter((array)$request->input('addons', []), fn($v) => (bool)$v));
+        $addonResolution = $eventResource->resolveAddons($selectedAddonKeys, $arrival, $departure);
+        $amount->addAmount($addonResolution['total']);
+
         $signupRequest = new SignUpRequest(
             $event,
             $registrationData['userId'] ?? null,
@@ -143,6 +148,7 @@ class SignupController extends CommonController {
             $registrationData['paymentMethod'] ?? null,
             (array)($registrationData['paymentOptions'] ?? []),
             (array)($registrationData['participationOptions'] ?? []),
+            $addonResolution['items'],
         );
 
         $signupCommand = new SignUpCommand($signupRequest);
@@ -185,14 +191,22 @@ class SignupController extends CommonController {
 
         $siblingReduction = $request->input('sibling') === 'true';
 
+        $arrival = \DateTime::createFromFormat('Y-m-d', $request->input('arrival'));
+        $departure = \DateTime::createFromFormat('Y-m-d', $request->input('departure'));
+
         $amount = $event->calculateAmount(
             $request->input('participationType'),
             $request->input('beitrag'),
-            \DateTime::createFromFormat('Y-m-d', $request->input('arrival')),
+            $arrival,
-            \DateTime::createFromFormat('Y-m-d', $request->input('departure')),
+            $departure,
             $siblingReduction
         );
 
+        // Gewählte Zusätze immer einrechnen -- so enthält der finale Anzeigebetrag (und der Bestätigungstext)
+        // stets die Addons und der Zahlungsschritt wird nur bei Gesamt 0 € übersprungen.
+        $selectedAddonKeys = array_keys(array_filter((array)$request->input('addons', []), fn($v) => (bool)$v));
+        $amount->addAmount($event->resolveAddons($selectedAddonKeys, $arrival, $departure)['total']);
+
         // amountValue (numerisch) steuert im Frontend das Überspringen des Zahlungsart-Schritts bei 0 €.
         return response()->json([
             'amount' => $amount->toString(),

app/Domains/Event/Routes/api.php

@@ -47,6 +47,7 @@ Route::prefix('api/v1')
                         Route::post('/common-settings', [DetailsController::class, 'updateCommonSettings']);
                         Route::post('/payment-methods', [DetailsController::class, 'updatePaymentMethods']);
                         Route::post('/participation-options', [DetailsController::class, 'updateParticipationOptions']);
+                        Route::post('/event-addons', [DetailsController::class, 'updateEventAddons']);
                     });
 
 

app/Domains/Event/Views/Partials/EventAddons.vue

@@ -0,0 +1,166 @@
+<script setup>
+import {ref} from "vue";
+import {toast} from "vue3-toastify";
+import {request} from "../../../../../resources/js/components/HttpClient.js";
+import AmountInput from "../../../../Views/Components/AmountInput.vue";
+
+const emit = defineEmits(['close'])
+
+const props = defineProps({
+    event: Object,
+})
+
+// Addon-Definition dieses Events: [ { key, title, description, price, flat } ].
+// key bleibt für bestehende Einträge erhalten (Bestandsschutz für bereits gebuchte Zusätze).
+const addons = ref((props.event.addons ?? []).map(a => ({
+    key: a.key ?? '',
+    title: a.title ?? '',
+    description: a.description ?? '',
+    price: a.price != null ? String(a.price).replace('.', ',') : '0',
+    flat: a.flat ?? false,
+})))
+
+function addAddon() {
+    addons.value.push({key: '', title: '', description: '', price: '0', flat: true})
+}
+
+function removeAddon(index) {
+    addons.value.splice(index, 1)
+}
+
+function validate() {
+    for (const addon of addons.value) {
+        if (addon.title.trim() === '') {
+            toast.error('Bitte für jeden Zusatz einen Titel angeben.')
+            return false
+        }
+    }
+
+    return true
+}
+
+async function save() {
+    if (!validate()) {
+        return
+    }
+
+    const response = await request('/api/v1/event/details/' + props.event.id + '/event-addons', {
+        method: 'POST',
+        body: {
+            addons: addons.value,
+        }
+    })
+
+    if (response.status !== 'success') {
+        toast.error(response.message ?? 'Die Zusatzoptionen konnten nicht gespeichert werden.')
+        return
+    }
+
+    toast.success('Die Zusatzoptionen wurden gespeichert')
+    emit('close')
+}
+</script>
+
+<template>
+    <div class="event-addons">
+        <h3>Zusatzoptionen</h3>
+        <p style="color: #6b7280; font-size: 0.9rem;">
+            Buchbare Zusätze zur Veranstaltung (z. B. Parkticket, Aufnäher). Jede Position ist eine Ja/Nein-Auswahl.
+            Preis 0 wird dem Teilnehmenden als „Kostenfrei" angezeigt. Ist „Pauschale" nicht gesetzt, wird der Preis
+            mit der Anzahl der Teilnahmetage multipliziert. Ohne Zusätze wird dieser Schritt in der Anmeldung
+            übersprungen.
+        </p>
+
+        <div v-for="(addon, index) in addons" :key="index" class="addon-card">
+            <div class="addon-head">
+                <div class="addon-fields">
+                    <label class="field-label">Titel</label>
+                    <input type="text" v-model="addon.title" class="width-full" placeholder="z. B. „Parkticket“"/>
+
+                    <label class="field-label">Beschreibung (optional)</label>
+                    <input type="text" v-model="addon.description" class="width-full" placeholder="Kurze Erläuterung"/>
+
+                    <div class="addon-price-row">
+                        <span>
+                            <label class="field-label">Preis</label>
+                            <AmountInput v-model="addon.price" class="width-small"/> Euro
+                        </span>
+                        <label class="flat-label">
+                            <input type="checkbox" v-model="addon.flat"/>
+                            Pauschale (nicht pro Tag)
+                        </label>
+                    </div>
+                </div>
+                <label class="link remove-link" @click="removeAddon(index)">Entfernen</label>
+            </div>
+        </div>
+
+        <div style="margin-top: 16px;">
+            <label class="link" @click="addAddon">+ Zusatz hinzufügen</label>
+        </div>
+
+        <div style="margin-top: 24px;">
+            <input type="button" value="Speichern" @click="save"/>
+        </div>
+    </div>
+</template>
+
+<style scoped>
+.addon-card {
+    margin-top: 16px;
+    padding: 14px;
+    background: #f8fafc;
+    border: 1px solid #e5e7eb;
+    border-radius: 10px;
+}
+
+.addon-head {
+    display: flex;
+    align-items: flex-start;
+    gap: 12px;
+}
+
+.addon-fields {
+    flex: 1;
+}
+
+.field-label {
+    display: block;
+    font-size: 0.78rem;
+    color: #6b7280;
+    margin: 6px 0 2px;
+}
+
+.addon-fields .field-label:first-child {
+    margin-top: 0;
+}
+
+.addon-price-row {
+    display: flex;
+    align-items: flex-end;
+    gap: 24px;
+    margin-top: 6px;
+}
+
+.flat-label {
+    display: flex;
+    align-items: center;
+    gap: 6px;
+    font-size: 0.9rem;
+    color: #374151;
+}
+
+.width-full {
+    width: 100%;
+}
+
+.width-small {
+    width: 90px;
+}
+
+.remove-link {
+    white-space: nowrap;
+    color: #ef4444;
+    font-size: 0.85rem;
+}
+</style>

app/Domains/Event/Views/Partials/Overview.vue

@@ -2,6 +2,7 @@
 import {onMounted, reactive, ref} from "vue";
 import ParticipationFees from "./ParticipationFees.vue";
 import ParticipationOptions from "./ParticipationOptions.vue";
+import EventAddons from "./EventAddons.vue";
 import ParticipationSummary from "./ParticipationSummary.vue";
 import CommonSettings from "./CommonSettings.vue";
 import EventManagement from "./EventManagement.vue";
@@ -41,6 +42,10 @@ const props = defineProps({
         displayData.value = 'participationOptions';
     }
 
+async function showEventAddons() {
+    displayData.value = 'eventAddons';
+}
+
     async function showEventManagement() {
         displayData.value = 'eventManagement';
     }
@@ -114,6 +119,7 @@ const props = defineProps({
     <ParticipationFees v-if="displayData === 'participationFees'" :event="dynamicProps.event"  @close="showMain" />
     <ParticipationOptions v-else-if="displayData === 'participationOptions'" :event="dynamicProps.event"
                           @close="showMain"/>
+    <EventAddons v-else-if="displayData === 'eventAddons'" :event="dynamicProps.event" @close="showMain"/>
     <CommonSettings v-else-if="displayData === 'commonSettings'" :event="dynamicProps.event"  @close="showMain" />
     <EventManagement v-else-if="displayData === 'eventManagement'" :event="dynamicProps.event"  @close="showMain" />
 
@@ -194,6 +200,8 @@ const props = defineProps({
             <label style="font-size: 9pt;" class="link" @click="showEventManagement">Veranstaltungsleitung</label> &nbsp;
             <label style="font-size: 9pt;" class="link" @click="showParticipationFees">Teilnahmegebühren</label> &nbsp;
             <label style="font-size: 9pt;" class="link" @click="showParticipationOptions">Teilnahmeoptionen</label>
+            &nbsp;
+            <label style="font-size: 9pt;" class="link" @click="showEventAddons">Zusatzoptionen</label>
             <a style="font-size: 9pt;" class="link" :href="'/budget/' + props.data.event.costUnit.id">Budget bearbeiten</a>
             <a style="font-size: 9pt;" class="link" :href="'/cost-unit/' + props.data.event.costUnit.id">Ausgabenübersicht</a>
             <a v-if="!dynamicProps.event.registrationAllowed && !dynamicProps.event.archived" style="color: #ff0000; font-size: 9pt;" class="link" @click="archiveEvent">Archivieren</a>

app/Domains/Event/Views/Partials/ParticipantData.vue

@@ -61,17 +61,26 @@ const form = reactive({
     amountExpected: '',
     cocStatus: '',
     participationOptions: {},
+    selectedAddons: {},
 });
 
 // Teilnahmeoptionen des Events (Definition mit Titel/Frage/Optionen).
 const participationQuestions = computed(() => staticProps.event?.participationOptions ?? []);
 
+// Zusatzoptionen (Event-Addons) des Events.
+const eventAddons = computed(() => staticProps.event?.addons ?? []);
+
 // Gewählte Antwort (Options-Label) eines Teilnehmers zu einer Frage – für die Ansicht „Titel: Antwort".
 function answerLabelFor(questionKey) {
     const answer = (props.participant?.participationOptions ?? []).find(o => o.questionKey === questionKey);
     return answer?.valueLabel ?? '—';
 }
 
+// Hat der Teilnehmer diesen Zusatz gebucht? – für die Ansicht.
+function isAddonSelected(addonKey) {
+    return (props.participant?.selectedAddons ?? []).some(a => a.addonKey === addonKey);
+}
+
 watch(
     () => props.participant,
     (participant) => {
@@ -107,6 +116,9 @@ watch(
         form.participationOptions = Object.fromEntries(
             (participant?.participationOptions ?? []).map(o => [o.questionKey, o.value])
         );
+        form.selectedAddons = Object.fromEntries(
+            (participant?.selectedAddons ?? []).map(a => [a.addonKey, true])
+        );
     },
     { immediate: true }
 );
@@ -402,25 +414,41 @@ function saveParticipant() {
             </div>
         </div>
 
-        <div class="participationData" v-if="participationQuestions.length > 0">
+        <div class="participationData" v-if="participationQuestions.length > 0 || eventAddons.length > 0">
             <div>
-                <h3>Teilnahmeoptionen</h3>
+                <template v-if="participationQuestions.length > 0">
-                <table>
+                    <h3>Teilnahmeoptionen</h3>
-                    <tr v-for="question in participationQuestions" :key="question.key">
+                    <table>
-                        <th>{{ question.title || question.label }}</th>
+                        <tr v-for="question in participationQuestions" :key="question.key">
-                        <td>
+                            <th>{{ question.title || question.label }}</th>
-                            <span v-if="!staticProps.editMode">{{ answerLabelFor(question.key) }}</span>
+                            <td>
-                            <select v-else v-model="form.participationOptions[question.key]">
+                                <span v-if="!staticProps.editMode">{{ answerLabelFor(question.key) }}</span>
-                                <option value="">— keine —</option>
+                                <select v-else v-model="form.participationOptions[question.key]">
-                                <option v-for="option in question.options" :key="option.value" :value="option.value">
+                                    <option value="">— keine —</option>
-                                    {{ option.label }}
+                                    <option v-for="option in question.options" :key="option.value"
-                                </option>
+                                            :value="option.value">
-                            </select>
+                                        {{ option.label }}
-                        </td>
+                                    </option>
-                    </tr>
+                                </select>
-                </table>
+                            </td>
+                        </tr>
+                    </table>
+                </template>
+            </div>
+            <div>
+                <template v-if="eventAddons.length > 0">
+                    <h3>Zusatzoptionen</h3>
+                    <table>
+                        <tr v-for="addon in eventAddons" :key="addon.key">
+                            <th>{{ addon.title }}</th>
+                            <td>
+                                <span v-if="!staticProps.editMode">{{ isAddonSelected(addon.key) ? 'Ja' : '—' }}</span>
+                                <input v-else type="checkbox" v-model="form.selectedAddons[addon.key]"/>
+                            </td>
+                        </tr>
+                    </table>
+                </template>
             </div>
-            <div></div>
         </div>
     </div>
 

app/Domains/Event/Views/Partials/SignUpForm/SignupForm.vue

@@ -107,6 +107,7 @@ const steps = [
                     v-if="currentStep === 11"
                     :formData="formData"
                     :event="event"
+                    :selectedAddons="selectedAddons"
                     :summaryAmount="summaryAmount"
                     :summaryAmountValue="summaryAmountValue"
                     :summaryLoading="summaryLoading"

app/Domains/Event/Views/Partials/SignUpForm/steps/StepAddons.vue

@@ -29,13 +29,21 @@ const next = () => emit('next', nextVisibleFrom(props.event, STEP_ADDONS))
         <!-- Addons -->
         <div v-if="event.addons?.length > 0">
             <h3>Zusatzoptionen</h3>
-            <div v-for="addon in event.addons" :key="addon.id" style="margin-bottom: 16px; padding: 12px; background: #f8fafc; border-radius: 8px;">
+            <div v-for="addon in event.addons" :key="addon.key"
+                 style="margin-bottom: 16px; padding: 12px; background: #f8fafc; border-radius: 8px;">
                 <label style="display: flex; gap: 12px; cursor: pointer;">
-                    <input type="checkbox" v-model="selectedAddons[addon.id]" style="margin-top: 4px;" />
+                    <input type="checkbox" v-model="selectedAddons[addon.key]" style="margin-top: 4px;"/>
                     <span>
-                        <strong>{{ addon.name }}</strong>
+                        <strong>{{ addon.title }}</strong>
-                        <span style="display: block; color: #6b7280; font-size: 0.875rem;">Betrag: {{ addon.amount }}</span>
+                        <span style="display: block; color: #6b7280; font-size: 0.875rem;">
-                        <span style="display: block; color: #374151; font-size: 0.875rem; margin-top: 4px;">{{ addon.description }}</span>
+                            <template v-if="addon.free">Kostenfrei</template>
+                            <template v-else>{{ addon.priceReadable }}<template
+                                v-if="!addon.flat"> / Tag</template></template>
+                        </span>
+                        <span v-if="addon.description"
+                              style="display: block; color: #374151; font-size: 0.875rem; margin-top: 4px;">{{
+                                addon.description
+                            }}</span>
                     </span>
                 </label>
             </div>

app/Domains/Event/Views/Partials/SignUpForm/steps/StepSummary.vue

@@ -7,6 +7,7 @@ const PAYMENT_ACCOUNT_TRANSACTION = 'PAYMENT_ACCOUNT_TRANSACTION'
 const props = defineProps({
     formData: Object,
     event: Object,
+    selectedAddons: {type: Object, default: () => ({})},
     summaryAmount: String,
     summaryAmountValue: {type: Number, default: 0},
     summaryLoading: Boolean,
@@ -35,6 +36,16 @@ const paymentConfirmationText = computed(() => {
 // Zurück führt zur Zahlungsart (10), sofern dieser Schritt gezeigt wurde; bei 0 € direkt zu Allergien (9).
 const backTarget = computed(() => props.summaryAmountValue > 0 ? 10 : 9)
 
+// Gewählte Zusätze (Event-Addons) für die Zusammenfassung mit Preisanzeige.
+const selectedAddonList = computed(() =>
+    (props.event.addons ?? [])
+        .filter(addon => props.selectedAddons[addon.key])
+        .map(addon => ({
+            title: addon.title,
+            price: addon.free ? 'Kostenfrei' : (addon.priceReadable + (addon.flat ? '' : ' / Tag')),
+        }))
+)
+
 // Gewählte Teilnahmeoptionen für die Zusammenfassung (label statt value anzeigen).
 const selectedParticipationOptions = computed(() =>
     (props.event.participationOptions ?? []).map(question => {
@@ -129,6 +140,11 @@ function eatingHabit() {
                     <td>{{ option.value }}</td>
                 </tr>
 
+                <tr v-for="addon in selectedAddonList" :key="addon.title">
+                    <td>{{ addon.title }}:</td>
+                    <td>{{ addon.price }}</td>
+                </tr>
+
                 <tr>
                     <td>Foto-Erlaubnis:</td>
                     <td>

app/Models/Event.php

@@ -88,6 +88,7 @@ class Event extends InstancedModel
         'tax_exemption_reason',
         'tax_exemption_note',
         'participation_options',
+        'addons',
 
     ];
 
@@ -117,6 +118,7 @@ class Event extends InstancedModel
         'vat_rate' => 'integer',
 
         'participation_options' => 'array',
+        'addons' => 'array',
     ];
 
     public function tenant(): BelongsTo

app/Models/EventParticipant.php

@@ -110,6 +110,12 @@ class EventParticipant extends InstancedModel
         return $this->hasMany(EventParticipantOption::class, 'event_participant_id');
     }
 
+    /** Gebuchte Zusätze (Event-Addons) dieser Anmeldung. */
+    public function selectedAddons(): HasMany
+    {
+        return $this->hasMany(EventParticipantAddon::class, 'event_participant_id');
+    }
+
     public function user()
     {
         return $this->belongsTo(User::class);

app/Models/EventParticipantAddon.php

@@ -0,0 +1,41 @@
+<?php
+
+namespace App\Models;
+
+use App\Casts\AmountCast;
+use App\Scopes\InstancedModel;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+
+class EventParticipantAddon extends InstancedModel
+{
+    protected $table = 'event_participant_addons';
+
+    protected $fillable = [
+        'tenant',
+        'event_id',
+        'event_participant_id',
+        'addon_key',
+        'title',
+        'price',
+        'flat',
+        'days',
+        'amount',
+    ];
+
+    protected $casts = [
+        'flat' => 'boolean',
+        'days' => 'integer',
+        'price' => AmountCast::class,
+        'amount' => AmountCast::class,
+    ];
+
+    public function event(): BelongsTo
+    {
+        return $this->belongsTo(Event::class);
+    }
+
+    public function participant(): BelongsTo
+    {
+        return $this->belongsTo(EventParticipant::class, 'event_participant_id');
+    }
+}

app/Resources/EventParticipantAddonResource.php

@@ -0,0 +1,26 @@
+<?php
+
+namespace App\Resources;
+
+use App\Models\EventParticipantAddon;
+use Illuminate\Http\Resources\Json\JsonResource;
+
+class EventParticipantAddonResource extends JsonResource
+{
+    function __construct(EventParticipantAddon $addon)
+    {
+        parent::__construct($addon);
+    }
+
+    public function toArray($request): array
+    {
+        return [
+            'addonKey' => $this->resource->addon_key,
+            'title' => $this->resource->title,
+            'flat' => $this->resource->flat,
+            'amount' => $this->resource->amount?->getAmount() ?? 0,
+            'amountReadable' => $this->resource->amount?->toString() ?? '0,00 Euro',
+            'free' => ($this->resource->amount?->getAmount() ?? 0) <= 0,
+        ];
+    }
+}

app/Resources/EventParticipantResource.php

@@ -98,6 +98,8 @@ class EventParticipantResource extends JsonResource
                 'departureDateReadable' => $this->resource->departure_date->format('d.m.Y'),
                 'participationOptions' => $this->resource->selectedOptions()->get()->map(
                     fn($option) => new EventParticipantOptionResource($option)->toArray($request))->toArray(),
+                'selectedAddons' => $this->resource->selectedAddons()->get()->map(
+                    fn($addon) => new EventParticipantAddonResource($addon)->toArray($request))->toArray(),
             ]
         );
     }

app/Resources/EventResource.php

@@ -141,6 +141,20 @@ class EventResource extends JsonResource{
         // Veranstaltungsspezifische Pflicht-Auswahlfragen (Teilnahmeoptionen); leeres Array => Schritt entfällt.
         $returnArray['participationOptions'] = $this->event->participation_options ?? [];
 
+        // Buchbare Zusätze (Event-Addons); leeres Array => Schritt entfällt. Preis 0 => "Kostenfrei".
+        $returnArray['addons'] = collect($this->event->addons ?? [])->map(function ($addon) {
+            $price = (float)($addon['price'] ?? 0);
+            return [
+                'key' => $addon['key'] ?? '',
+                'title' => $addon['title'] ?? '',
+                'description' => $addon['description'] ?? '',
+                'price' => $price,
+                'priceReadable' => new Amount($price, 'Euro')->toString(),
+                'free' => $price <= 0,
+                'flat' => (bool)($addon['flat'] ?? false),
+            ];
+        })->toArray();
+
 
         $returnArray['participationTypes'] = [];
 
@@ -354,6 +368,54 @@ class EventResource extends JsonResource{
 
         return new Amount(round($basicFee->getAmount(), 2), 'Euro');
     }
+
+    /**
+     * Löst die gewählten Zusätze (Event-Addons) gegen die Event-Definition auf und berechnet je Position den
+     * Betrag: Pauschale => Preis, sonst Preis × Teilnahmetage. Bei USt-Pflicht + Netto-Preismodus (`add_on`)
+     * wird die USt aufgeschlagen (analog Beitrag); bei „inclusive"/keiner Pflicht bleibt der Preis unverändert.
+     * Kein Early-Bird-Aufschlag.
+     *
+     * @param array<int, string> $selectedKeys
+     * @return array{items: array<int, array{key: string, title: string, price: float, flat: bool, days: int, amount: float}>, total: Amount}
+     */
+    public function resolveAddons(array $selectedKeys, DateTime $arrival, DateTime $departure): array
+    {
+        $days = $arrival->diff($departure)->days + 1;
+        $addsVat = $this->event->tax_liable && $this->event->vat_pricing_mode === VatPricingMode::AddOn->value;
+
+        $items = [];
+        $total = new Amount(0, 'Euro');
+
+        foreach ($this->event->addons ?? [] as $addon) {
+            $key = $addon['key'] ?? null;
+            if ($key === null || !in_array($key, $selectedKeys, true)) {
+                continue;
+            }
+
+            $price = (float)($addon['price'] ?? 0);
+            $flat = (bool)($addon['flat'] ?? false);
+            $usedDays = $flat ? 1 : $days;
+
+            $amount = $flat ? $price : $price * $days;
+            if ($addsVat) {
+                $amount *= 1 + $this->event->vat_rate / 100;
+            }
+            $amount = round($amount, 2);
+
+            $items[] = [
+                'key' => $key,
+                'title' => $addon['title'] ?? $key,
+                'price' => $price,
+                'flat' => $flat,
+                'days' => $usedDays,
+                'amount' => $amount,
+            ];
+
+            $total->addAmount(new Amount($amount, 'Euro'));
+        }
+
+        return ['items' => $items, 'total' => $total];
+    }
 }
 
 

database/migrations/2026_08_12_150010_add_addons_to_events.php

@@ -0,0 +1,23 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration {
+    public function up(): void
+    {
+        Schema::table('events', function (Blueprint $table) {
+            // Buchbare Zusätze (Event-Addons) als Ja/Nein-Optionen mit Preis.
+            // Struktur: [ { key, title, description, price, flat } ]
+            $table->json('addons')->nullable();
+        });
+    }
+
+    public function down(): void
+    {
+        Schema::table('events', function (Blueprint $table) {
+            $table->dropColumn('addons');
+        });
+    }
+};

database/migrations/2026_08_12_150020_create_event_participant_addons.php

@@ -0,0 +1,36 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration {
+    public function up(): void
+    {
+        // Gewählte Zusätze je Anmeldung -- eine Zeile pro gebuchtem Addon.
+        // Titel/Preis/Betrag werden als Snapshot mitgespeichert (relevant für die spätere Rechnung).
+        Schema::create('event_participant_addons', function (Blueprint $table) {
+            $table->id();
+            $table->string('tenant');
+
+            $table->foreignId('event_id')->constrained('events', 'id')->cascadeOnDelete()->cascadeOnUpdate();
+            $table->foreignId('event_participant_id')->constrained('event_participants', 'id')->cascadeOnDelete()->cascadeOnUpdate();
+
+            $table->string('addon_key');
+            $table->string('title');
+            $table->float('price')->default(0);
+            $table->boolean('flat')->default(false);
+            $table->integer('days')->default(0);
+            $table->float('amount')->default(0);
+
+            $table->timestamps();
+
+            $table->foreign('tenant')->references('slug')->on('tenants')->restrictOnDelete()->cascadeOnUpdate();
+        });
+    }
+
+    public function down(): void
+    {
+        Schema::dropIfExists('event_participant_addons');
+    }
+};