mirror of
https://github.com/Abdulazizzn/n8n-enterprise-unlocked.git
synced 2025-12-16 17:46:45 +00:00
fix: Fix paired item handling of multiple inputs (#16153)
This commit is contained in:
Elias Meire
@@ -912,106 +912,76 @@ export class WorkflowDataProxy {
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return outputs;
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}
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function resolveMultiplePairings(
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pairings: IPairedItemData[],
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source: ISourceData[],
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destinationNode: string,
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method: PairedItemMethod,
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itemIndex: number,
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): INodeExecutionData {
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const results = pairings
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.map((pairing) => {
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try {
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const input = pairing.input || 0;
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if (input >= source.length) {
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// Could not resolve pairedItem as the defined node input does not exist on source.previousNode.
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return null;
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}
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// eslint-disable-next-line @typescript-eslint/no-use-before-define
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return getPairedItem(destinationNode, source[input], pairing, method);
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} catch {
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return null;
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}
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})
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.filter(Boolean) as INodeExecutionData[];
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const normalizePairedItem = (
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paired: number | IPairedItemData | Array<number | IPairedItemData>,
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): IPairedItemData[] => {
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const pairedItems = Array.isArray(paired) ? paired : [paired];
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if (results.length === 1) return results[0];
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return pairedItems.map((p) => (typeof p === 'number' ? { item: p } : p));
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};
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const allSame = results.every((r) => r === results[0]);
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if (allSame) return results[0];
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throw createPairedItemMultipleItemsFound(destinationNode, itemIndex);
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}
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/**
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* Attempts to find the execution data for a specific paired item
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* by traversing the node execution ancestry chain.
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*/
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const getPairedItem = (
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destinationNodeName: string,
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incomingSourceData: ISourceData | null,
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initialPairedItem: IPairedItemData,
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usedMethodName: PairedItemMethod = PAIRED_ITEM_METHOD.$GET_PAIRED_ITEM,
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): INodeExecutionData | null => {
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nodeBeforeLast?: string,
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): INodeExecutionData => {
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// Step 1: Normalize inputs
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const [pairedItem, sourceData] = normalizeInputs(initialPairedItem, incomingSourceData);
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let currentPairedItem = pairedItem;
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let currentSource = sourceData;
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let nodeBeforeLast: string | undefined;
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// Step 2: Traverse ancestry to find correct node
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while (currentSource && currentSource.previousNode !== destinationNodeName) {
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const taskData = getTaskData(currentSource);
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const outputData = getNodeOutput(taskData, currentSource, nodeBeforeLast);
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const sourceArray = taskData?.source.filter((s): s is ISourceData => s !== null) ?? [];
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const item = outputData[currentPairedItem.item];
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if (item?.pairedItem === undefined) {
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throw createMissingPairedItemError(currentSource.previousNode, usedMethodName);
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}
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// Multiple pairings? Recurse over all
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if (Array.isArray(item.pairedItem)) {
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return resolveMultiplePairings(
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item.pairedItem,
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sourceArray,
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destinationNodeName,
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usedMethodName,
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currentPairedItem.item,
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);
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}
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// Follow single paired item
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currentPairedItem =
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typeof item.pairedItem === 'number' ? { item: item.pairedItem } : item.pairedItem;
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const inputIndex = currentPairedItem.input || 0;
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if (inputIndex >= sourceArray.length) {
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if (sourceArray.length === 0) throw createNoConnectionError(destinationNodeName);
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throw createBranchNotFoundError(
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currentSource.previousNode,
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currentPairedItem.item,
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nodeBeforeLast,
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);
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}
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nodeBeforeLast = currentSource.previousNode;
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currentSource = currentPairedItem.sourceOverwrite || sourceArray[inputIndex];
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if (!sourceData) {
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throw createPairedItemNotFound(destinationNodeName, nodeBeforeLast);
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}
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// Step 3: Final node reached — fetch paired item
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if (!currentSource) throw createPairedItemNotFound(destinationNodeName, nodeBeforeLast);
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const taskData = getTaskData(sourceData);
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const outputData = getNodeOutput(taskData, sourceData, nodeBeforeLast);
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const item = outputData[pairedItem.item];
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const sourceArray = taskData?.source ?? [];
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const finalTaskData = getTaskData(currentSource);
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const finalOutputData = getNodeOutput(finalTaskData, currentSource);
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// Done: reached the destination node in the ancestry chain
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if (sourceData.previousNode === destinationNodeName) {
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if (pairedItem.item >= outputData.length) {
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throw createInvalidPairedItemError({ nodeName: sourceData.previousNode });
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}
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if (currentPairedItem.item >= finalOutputData.length) {
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throw createInvalidPairedItemError({ nodeName: currentSource.previousNode });
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return item;
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}
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return finalOutputData[currentPairedItem.item];
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if (!item?.pairedItem) {
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throw createMissingPairedItemError(sourceData.previousNode, usedMethodName);
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}
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// Normalize paired item to always be IPairedItemData[]
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const nextPairedItems = normalizePairedItem(item.pairedItem);
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// Recursively traverse ancestry to find the destination node + paired item
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const results = nextPairedItems.flatMap((nextPairedItem) => {
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const inputIndex = nextPairedItem.input ?? 0;
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if (inputIndex >= sourceArray.length) return [];
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const nextSource = nextPairedItem.sourceOverwrite ?? sourceArray[inputIndex];
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return getPairedItem(
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destinationNodeName,
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nextSource,
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{ ...nextPairedItem, input: inputIndex },
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usedMethodName,
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sourceData.previousNode,
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);
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});
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if (results.length === 0) {
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if (sourceArray.length === 0) throw createNoConnectionError(destinationNodeName);
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throw createBranchNotFoundError(sourceData.previousNode, pairedItem.item, nodeBeforeLast);
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}
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const [first, ...rest] = results;
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if (rest.some((r) => r !== first)) {
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throw createPairedItemMultipleItemsFound(destinationNodeName, pairedItem.item);
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}
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return first;
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};
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const handleFromAi = (
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114
packages/workflow/test/fixtures/WorkflowDataProxy/multiple_inputs_run.json
vendored
Normal file
114
packages/workflow/test/fixtures/WorkflowDataProxy/multiple_inputs_run.json
vendored
Normal file
@@ -0,0 +1,114 @@
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{
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"data": {
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"startData": {},
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"resultData": {
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"runData": {
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"Manual Trigger": [
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{
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"startTime": 1749486952181,
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"executionIndex": 0,
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"source": [],
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"hints": [],
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"executionTime": 2,
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"executionStatus": "success",
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"data": { "main": [[{ "json": {}, "pairedItem": { "item": 0 } }]] }
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}
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],
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"Set main variable": [
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{
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"startTime": 1749486952183,
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"executionIndex": 1,
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"source": [{ "previousNode": "Manual Trigger" }],
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"hints": [],
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"executionTime": 2,
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"executionStatus": "success",
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"data": { "main": [[{ "json": { "main_variable": 2 }, "pairedItem": { "item": 0 } }]] }
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}
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],
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"Set variable_1": [
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{
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"startTime": 1749486952185,
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"executionIndex": 2,
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"source": [{ "previousNode": "Set main variable" }],
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"hints": [],
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"executionTime": 0,
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"executionStatus": "success",
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"data": {
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"main": [[{ "json": { "variable_1": "1234" }, "pairedItem": { "item": 0 } }]]
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}
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}
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],
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"Set variable_2": [
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{
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"startTime": 1749486952186,
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"executionIndex": 3,
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"source": [{ "previousNode": "Set main variable" }],
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"hints": [],
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"executionTime": 0,
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"executionStatus": "success",
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"data": {
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"main": [[{ "json": { "variable_2": "2345" }, "pairedItem": { "item": 0 } }]]
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}
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}
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],
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"Set variable_3": [
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{
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"startTime": 1749486952187,
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"executionIndex": 4,
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"source": [{ "previousNode": "Set main variable" }],
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"hints": [],
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"executionTime": 0,
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"executionStatus": "success",
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"data": {
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"main": [[{ "json": { "variable_3": "3456" }, "pairedItem": { "item": 0 } }]]
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}
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}
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],
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"Merge": [
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{
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"startTime": 1749486952197,
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"executionIndex": 5,
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"source": [null, null, { "previousNode": "Set variable_3" }],
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"hints": [],
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"executionTime": 12,
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"executionStatus": "success",
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"data": {
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"main": [
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[{ "json": { "variable_3": "3456" }, "pairedItem": { "item": 0, "input": 2 } }]
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]
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}
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}
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],
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"Output": [
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{
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"startTime": 1749486952210,
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"executionIndex": 6,
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"source": [{ "previousNode": "Merge" }],
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"hints": [],
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"executionTime": 4,
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"executionStatus": "success",
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"data": {
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"main": [
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[
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{
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"json": { "final_variable_2": "3456", "main": "2" },
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"pairedItem": { "item": 0 }
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}
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]
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]
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}
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}
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]
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},
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"pinData": {},
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"lastNodeExecuted": "Output"
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},
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"executionData": {
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"contextData": {},
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"nodeExecutionStack": [],
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"metadata": {},
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"waitingExecution": {},
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"waitingExecutionSource": {}
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}
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}
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}
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203
packages/workflow/test/fixtures/WorkflowDataProxy/multiple_inputs_workflow.json
vendored
Normal file
203
packages/workflow/test/fixtures/WorkflowDataProxy/multiple_inputs_workflow.json
vendored
Normal file
@@ -0,0 +1,203 @@
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{
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"name": "Paired item",
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"nodes": [
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{
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"parameters": {
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"numberInputs": 3
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},
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"type": "n8n-nodes-base.merge",
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"typeVersion": 3.1,
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"position": [560, 300],
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"id": "2b68168b-1494-4c4b-b416-b4fb6bb0afd8",
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"name": "Merge",
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"alwaysOutputData": true
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},
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{
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"parameters": {
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"assignments": {
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"assignments": [
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{
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"id": "63830a30-a4cc-4a66-9d01-8f0a058d4d43",
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"name": "variable_1",
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"value": "1234",
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"type": "string"
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}
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]
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},
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"options": {}
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},
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"type": "n8n-nodes-base.set",
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"typeVersion": 3.4,
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"position": [200, 100],
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"id": "a1d151cc-8f44-43c6-962f-baecb879d33c",
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"name": "Set variable_1"
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},
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{
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"parameters": {
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"assignments": {
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"assignments": [
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{
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"id": "63830a30-a4cc-4a66-9d01-8f0a058d4d43",
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"name": "variable_2",
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"value": "2345",
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"type": "string"
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}
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]
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},
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"options": {}
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},
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"type": "n8n-nodes-base.set",
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"typeVersion": 3.4,
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"position": [200, 300],
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"id": "404ff876-b524-4873-8dc0-36664639907a",
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"name": "Set variable_2"
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},
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{
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"parameters": {
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"assignments": {
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"assignments": [
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{
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"id": "63830a30-a4cc-4a66-9d01-8f0a058d4d43",
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"name": "variable_3",
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"value": "3456",
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"type": "string"
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}
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]
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},
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"options": {}
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},
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"type": "n8n-nodes-base.set",
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"typeVersion": 3.4,
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"position": [200, 500],
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"id": "d403e979-7651-4acf-8e08-1d342b7abe7f",
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"name": "Set variable_3"
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},
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{
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"parameters": {
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"assignments": {
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"assignments": [
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{
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"id": "89862e7d-0c44-4d6a-897e-a249c06f6346",
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"name": "final_variable_2",
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"value": "={{ $('Set variable_3').item.json.variable_3 }}",
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"type": "string"
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},
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{
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"id": "060e841c-c236-41ae-9396-e23566825f47",
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"name": "main",
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"value": "={{ $('Set main variable').item.json.main_variable }}",
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"type": "string"
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}
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]
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},
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"options": {}
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},
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"type": "n8n-nodes-base.set",
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"typeVersion": 3.4,
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"position": [840, 300],
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"id": "16514f79-e309-465c-b571-7d81e268d7f0",
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"name": "Output"
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},
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{
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"parameters": {},
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"type": "n8n-nodes-base.manualTrigger",
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"typeVersion": 1,
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"position": [-240, 300],
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"id": "3a8a9543-567c-443c-8742-fa0a8d9fb2e7",
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"name": "Manual Trigger"
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},
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{
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"parameters": {
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"assignments": {
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"assignments": [
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{
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"id": "6bb9d060-adee-429f-884d-5009ab1a1811",
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"name": "main_variable",
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"value": 2,
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"type": "number"
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}
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]
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},
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"options": {}
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},
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"type": "n8n-nodes-base.set",
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"typeVersion": 3.4,
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"position": [-20, 300],
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"id": "b6ec9c0f-de04-45d3-a402-3969251a6914",
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"name": "Set main variable"
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}
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],
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"pinData": {},
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"connections": {
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"Merge": {
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"main": [
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[
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{
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"node": "Output",
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"type": "main",
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"index": 0
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}
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]
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]
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},
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"Set variable_1": {
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"main": [[]]
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},
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"Set variable_2": {
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"main": [[]]
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},
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"Set variable_3": {
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"main": [
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[
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{
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"node": "Merge",
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"type": "main",
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"index": 2
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}
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]
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]
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},
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"Manual Trigger": {
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"main": [
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[
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{
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"node": "Set main variable",
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"type": "main",
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"index": 0
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}
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]
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]
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},
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"Set main variable": {
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"main": [
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[
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{
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"node": "Set variable_2",
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"type": "main",
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"index": 0
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},
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{
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"node": "Set variable_1",
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"type": "main",
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"index": 0
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},
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{
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"node": "Set variable_3",
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"type": "main",
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"index": 0
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}
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]
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]
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}
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},
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"active": false,
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"settings": {
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"executionOrder": "v1"
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},
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"versionId": "5678abcc-b267-4b5b-ba1b-5f7bb1b085ec",
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"meta": {
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"instanceId": "27cc9b56542ad45b38725555722c50a1c3fee1670bbb67980558314ee08517c4"
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},
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"id": "TakJu1jBtMGTFXEA",
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"tags": []
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}
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@@ -835,4 +835,14 @@ describe('WorkflowDataProxy', () => {
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expect(tools[0].aiDefinedFields).toEqual(['Start']);
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});
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});
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describe('multiple inputs', () => {
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const fixture = loadFixture('multiple_inputs');
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|
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it('should correctly resolve expressions with multiple inputs (using paired item)', () => {
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const proxy = getProxyFromFixture(fixture.workflow, fixture.run, 'Output');
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expect(proxy.$('Set variable_3').item.json.variable_3).toEqual('3456');
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expect(proxy.$('Set main variable').item.json.main_variable).toEqual(2);
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});
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});
|
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});
|
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|
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Reference in New Issue
Block a user