Unterkostenstellen in der Kostenstellenauswertung korrekt auflösen

frontend/components/costcentreDisplay.vue

@@ -16,6 +16,14 @@ const selectedMonth = ref("all")
 
 const currency = (value) => `${Number(value || 0).toFixed(2).replace(".", ",")} EUR`
 
+const getCostCentreId = (value) => {
+  if (!value) {
+    return null
+  }
+
+  return typeof value === "object" ? value.id : value
+}
+
 const costCentreMap = computed(() => {
   return new Map(costcentres.value.map((costcentre) => [costcentre.id, costcentre]))
 })
@@ -30,15 +38,17 @@ const relevantCostCentreIds = computed(() => {
   const childrenByParent = new Map()
 
   costcentres.value.forEach((costcentre) => {
-    if (!costcentre.parentCostcentre) {
+    const parentId = getCostCentreId(costcentre.parentCostcentre)
+
+    if (!parentId) {
       return
     }
 
-    if (!childrenByParent.has(costcentre.parentCostcentre)) {
-      childrenByParent.set(costcentre.parentCostcentre, [])
+    if (!childrenByParent.has(parentId)) {
+      childrenByParent.set(parentId, [])
     }
 
-    childrenByParent.get(costcentre.parentCostcentre).push(costcentre.id)
+    childrenByParent.get(parentId).push(costcentre.id)
   })
 
   const collectedIds = new Set([rootId])
@@ -107,7 +117,7 @@ const reportRows = computed(() => {
       const amountNet = Number(account.amountNet || 0)
       const amountTax = Number(account.amountTax || 0)
       const amountGross = Number(account.amountGross || amountNet + amountTax || 0)
-      const accountCostCentre = costCentreMap.value.get(account.costCentre)
+      const accountCostCentre = costCentreMap.value.get(getCostCentreId(account.costCentre))
 
       return {
         id: `${invoice.id}-${index}`,