fix(Google Sheets Node): Fix "Append or Update" on an empty sheet (n8n-io#9175)

Co-authored-by: Michael Kret <[email protected]>

Author: 2 people

packages/editor-ui/src/components/ResourceMapper/ResourceMapper.vue

@@ -19,6 +19,7 @@ import { fieldCannotBeDeleted, parseResourceMapperFieldName } from '@/utils/node
 import { isResourceMapperValue } from '@/utils/typeGuards';
 import { i18n as locale } from '@/plugins/i18n';
 import { useNDVStore } from '@/stores/ndv.store';
+import { useWorkflowsStore } from '@/stores/workflows.store';
 
 type Props = {
 	parameter: INodeProperties;
@@ -32,6 +33,7 @@ type Props = {
 
 const nodeTypesStore = useNodeTypesStore();
 const ndvStore = useNDVStore();
+const workflowsStore = useWorkflowsStore();
 
 const props = withDefaults(defineProps<Props>(), {
 	teleported: true,
@@ -71,6 +73,16 @@ watch(
 	},
 );
 
+// Reload fields to map when node is executed
+watch(
+	() => workflowsStore.getWorkflowExecution,
+	async (data) => {
+		if (data?.status === 'success' && state.paramValue.mappingMode === 'autoMapInputData') {
+			await initFetching(true);
+		}
+	},
+);
+
 onMounted(async () => {
 	if (props.node) {
 		state.parameterValues = {
@@ -199,9 +211,9 @@ const pluralFieldWord = computed<string>(() => {
 	);
 });
 
-async function initFetching(inlineLading = false): Promise<void> {
+async function initFetching(inlineLoading = false): Promise<void> {
 	state.loadingError = false;
-	if (inlineLading) {
+	if (inlineLoading) {
 		state.refreshInProgress = true;
 	} else {
 		state.loading = true;

packages/nodes-base/nodes/Google/Sheet/v2/actions/sheet/appendOrUpdate.operation.ts

@@ -249,18 +249,23 @@ export async function execute(
 		}
 	}
 
+	const dataMode =
+		nodeVersion < 4
+			? (this.getNodeParameter('dataMode', 0) as string)
+			: (this.getNodeParameter('columns.mappingMode', 0) as string);
+
 	let columnNames: string[] = [];
 
-	const sheetData = await sheet.getData(sheetName, 'FORMATTED_VALUE');
+	const sheetData = (await sheet.getData(sheetName, 'FORMATTED_VALUE')) ?? [];
 
-	if (sheetData?.[headerRow] === undefined) {
+	if (!sheetData[headerRow] && dataMode !== 'autoMapInputData') {
 		throw new NodeOperationError(
 			this.getNode(),
 			`Could not retrieve the column names from row ${headerRow + 1}`,
 		);
 	}
 
-	columnNames = sheetData[headerRow];
+	columnNames = sheetData[headerRow] ?? [];
 
 	const newColumns = new Set<string>();
 
@@ -269,11 +274,6 @@ export async function execute(
 			? [this.getNodeParameter('columnToMatchOn', 0) as string]
 			: (this.getNodeParameter('columns.matchingColumns', 0) as string[]);
 
-	const dataMode =
-		nodeVersion < 4
-			? (this.getNodeParameter('dataMode', 0) as string)
-			: (this.getNodeParameter('columns.mappingMode', 0) as string);
-
 	// TODO: Add support for multiple columns to match on in the next overhaul
 	const keyIndex = columnNames.indexOf(columnsToMatchOn[0]);
 
@@ -379,6 +379,7 @@ export async function execute(
 				headerRow + 1,
 			);
 			columnNames = newColumnNames;
+			sheetData[headerRow] = newColumnNames;
 			newColumns.clear();
 		}
 

packages/nodes-base/nodes/Google/Sheet/v2/helpers/GoogleSheet.ts

@@ -476,7 +476,7 @@ export class GoogleSheet {
 
 		const keyIndex = columnNames.indexOf(indexKey);
 
-		if (keyIndex === -1) {
+		if (keyIndex === -1 && !upsert) {
 			throw new NodeOperationError(
 				this.executeFunctions.getNode(),
 				`Could not find column for key "${indexKey}"`,