Handling of event addons

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

@@ -1,16 +1,15 @@
 <script setup>
+import {prevVisibleFrom, STEP_ALLERGIES, STEP_PHOTO} from "../composables/stepFlow.js";
+
 const props = defineProps({ formData: Object, event: Object })
 const emit = defineEmits(['next', 'back'])
 
 const acceptAll = () => {
     Object.keys(props.formData.foto).forEach(k => props.formData.foto[k] = true)
-    emit('next', 8)
+    emit('next', STEP_ALLERGIES)
 }
 
-const back = () => {
-    const hasAddons = (props.event.addons?.length > 0) || props.event.solidarityPayment
-    emit('back', hasAddons ? 6 : 5)
-}
+const back = () => emit('back', prevVisibleFrom(props.event, STEP_PHOTO))
 </script>
 
 <template>
@@ -27,7 +26,7 @@ const back = () => {
         <div class="btn-row">
             <button type="button" class="btn-secondary" @click="back">← Zurück</button>
             <button type="button" class="btn-primary" style="background: #059669;" @click="acceptAll">Alle akzeptieren & weiter</button>
-            <button type="button" class="btn-primary" @click="emit('next', 8)">Weiter →</button>
+            <button type="button" class="btn-primary" @click="emit('next', 9)">Weiter →</button>
         </div>
     </div>
 </template>