frontend/pages/createDocument/index.vue

@@ -264,7 +264,18 @@ const clearSearchString = () => {
   debouncedSearchString.value = ''
 }
 
-const selectableFilters = ref(dataType.filters.map(i => i.name))
+const openUnpaidInvoicesFilter = {
+  name: 'Nur offene Rechnungen',
+  filterFunction: (row) => {
+    return ['invoices', 'advanceInvoices'].includes(row.type)
+        && row.state === 'Gebucht'
+        && !useSum().getIsPaid(row, items.value)
+        && !items.value.find(i => i.linkedDocument && i.linkedDocument.id === row.id)
+  }
+}
+
+const availableFilters = computed(() => [...dataType.filters, openUnpaidInvoicesFilter])
+const selectableFilters = computed(() => availableFilters.value.map(i => i.name))
 const selectedFilters = ref(dataType.filters.filter(i => i.default).map(i => i.name) || [])
 
 const filteredRows = computed(() => {
@@ -286,8 +297,10 @@ const filteredRows = computed(() => {
 
   if (selectedFilters.value.length > 0) {
     selectedFilters.value.forEach(filterName => {
-      let filter = dataType.filters.find(i => i.name === filterName)
+      const filter = availableFilters.value.find(i => i.name === filterName)
+      if (filter?.filterFunction) {
         tempItems = tempItems.filter(filter.filterFunction)
+      }
     })
   }