mirror of
https://github.com/n8n-io/n8n.git
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359 lines
9.6 KiB
TypeScript
359 lines
9.6 KiB
TypeScript
import type {
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IDataObject,
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IExecuteFunctions,
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INodeExecutionData,
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INodeProperties,
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} from 'n8n-workflow';
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import { NodeOperationError } from 'n8n-workflow';
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import type {
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PgpDatabase,
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PostgresNodeOptions,
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QueriesRunner,
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QueryValues,
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QueryWithValues,
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} from '../../helpers/interfaces';
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import {
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addReturning,
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checkItemAgainstSchema,
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configureTableSchemaUpdater,
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doesRowExist,
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getTableSchema,
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prepareItem,
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convertArraysToPostgresFormat,
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replaceEmptyStringsByNulls,
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} from '../../helpers/utils';
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import { optionsCollection } from '../common.descriptions';
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import { updateDisplayOptions } from '@utils/utilities';
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const properties: INodeProperties[] = [
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{
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displayName: 'Data Mode',
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name: 'dataMode',
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type: 'options',
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options: [
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{
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name: 'Auto-Map Input Data to Columns',
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value: 'autoMapInputData',
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description: 'Use when node input properties names exactly match the table column names',
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},
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{
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name: 'Map Each Column Manually',
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value: 'defineBelow',
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description: 'Set the value for each destination column manually',
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},
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],
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default: 'autoMapInputData',
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description:
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'Whether to map node input properties and the table data automatically or manually',
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displayOptions: {
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show: {
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'@version': [2, 2.1],
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},
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},
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},
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{
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displayName: `
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In this mode, make sure incoming data fields are named the same as the columns in your table. If needed, use an 'Edit Fields' node before this node to change the field names.
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`,
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name: 'notice',
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type: 'notice',
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default: '',
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displayOptions: {
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show: {
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dataMode: ['autoMapInputData'],
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'@version': [2],
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},
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},
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},
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{
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// eslint-disable-next-line n8n-nodes-base/node-param-display-name-wrong-for-dynamic-options
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displayName: 'Column to Match On',
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name: 'columnToMatchOn',
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type: 'options',
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required: true,
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// eslint-disable-next-line n8n-nodes-base/node-param-description-wrong-for-dynamic-options
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description:
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'The column to compare when finding the rows to update. Choose from the list, or specify an ID using an <a href="https://docs.n8n.io/code-examples/expressions/" target="_blank">expression</a>.',
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typeOptions: {
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loadOptionsMethod: 'getColumns',
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loadOptionsDependsOn: ['schema.value', 'table.value'],
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},
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default: '',
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hint: 'The column to use when matching rows in Postgres to the input items of this node. Usually an ID.',
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displayOptions: {
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show: {
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'@version': [2, 2.1],
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},
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},
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},
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{
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displayName: 'Value of Column to Match On',
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name: 'valueToMatchOn',
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type: 'string',
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default: '',
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description:
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'Rows with a value in the specified "Column to Match On" that corresponds to the value in this field will be updated',
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displayOptions: {
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show: {
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dataMode: ['defineBelow'],
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'@version': [2, 2.1],
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},
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},
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},
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{
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displayName: 'Values to Send',
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name: 'valuesToSend',
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placeholder: 'Add Value',
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type: 'fixedCollection',
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typeOptions: {
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multipleValueButtonText: 'Add Value',
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multipleValues: true,
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},
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displayOptions: {
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show: {
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dataMode: ['defineBelow'],
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'@version': [2, 2.1],
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},
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},
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default: {},
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options: [
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{
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displayName: 'Values',
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name: 'values',
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values: [
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{
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// eslint-disable-next-line n8n-nodes-base/node-param-display-name-wrong-for-dynamic-options
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displayName: 'Column',
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name: 'column',
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type: 'options',
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// eslint-disable-next-line n8n-nodes-base/node-param-description-wrong-for-dynamic-options
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description:
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'Choose from the list, or specify an ID using an <a href="https://docs.n8n.io/code-examples/expressions/" target="_blank">expression</a>',
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typeOptions: {
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loadOptionsMethod: 'getColumnsWithoutColumnToMatchOn',
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loadOptionsDependsOn: ['schema.value', 'table.value'],
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},
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default: [],
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},
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{
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displayName: 'Value',
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name: 'value',
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type: 'string',
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default: '',
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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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displayName: 'Columns',
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name: 'columns',
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type: 'resourceMapper',
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noDataExpression: true,
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default: {
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mappingMode: 'defineBelow',
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value: null,
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},
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required: true,
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typeOptions: {
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loadOptionsDependsOn: ['table.value', 'operation'],
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resourceMapper: {
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resourceMapperMethod: 'getMappingColumns',
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mode: 'update',
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fieldWords: {
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singular: 'column',
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plural: 'columns',
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},
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addAllFields: true,
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multiKeyMatch: true,
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},
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},
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displayOptions: {
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show: {
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'@version': [{ _cnd: { gte: 2.2 } }],
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},
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},
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},
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optionsCollection,
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];
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const displayOptions = {
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show: {
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resource: ['database'],
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operation: ['update'],
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},
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hide: {
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table: [''],
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},
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};
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export const description = updateDisplayOptions(displayOptions, properties);
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export async function execute(
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this: IExecuteFunctions,
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runQueries: QueriesRunner,
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items: INodeExecutionData[],
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nodeOptions: PostgresNodeOptions,
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db: PgpDatabase,
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): Promise<INodeExecutionData[]> {
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items = replaceEmptyStringsByNulls(items, nodeOptions.replaceEmptyStrings as boolean);
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const nodeVersion = nodeOptions.nodeVersion as number;
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let schema = this.getNodeParameter('schema', 0, undefined, {
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extractValue: true,
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}) as string;
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let table = this.getNodeParameter('table', 0, undefined, {
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extractValue: true,
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}) as string;
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const updateTableSchema = configureTableSchemaUpdater(schema, table);
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let tableSchema = await getTableSchema(db, schema, table);
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const queries: QueryWithValues[] = [];
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for (let i = 0; i < items.length; i++) {
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schema = this.getNodeParameter('schema', i, undefined, {
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extractValue: true,
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}) as string;
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table = this.getNodeParameter('table', i, undefined, {
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extractValue: true,
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}) as string;
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const columnsToMatchOn: string[] =
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nodeVersion < 2.2
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? [this.getNodeParameter('columnToMatchOn', i) as string]
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: (this.getNodeParameter('columns.matchingColumns', i) as string[]);
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const dataMode =
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nodeVersion < 2.2
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? (this.getNodeParameter('dataMode', i) as string)
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: (this.getNodeParameter('columns.mappingMode', i) as string);
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let item: IDataObject = {};
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let valueToMatchOn: string | IDataObject = '';
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if (nodeVersion < 2.2) {
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valueToMatchOn = this.getNodeParameter('valueToMatchOn', i) as string;
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}
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if (dataMode === 'autoMapInputData') {
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item = items[i].json;
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if (nodeVersion < 2.2) {
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valueToMatchOn = item[columnsToMatchOn[0]] as string;
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}
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}
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if (dataMode === 'defineBelow') {
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const valuesToSend =
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nodeVersion < 2.2
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? ((this.getNodeParameter('valuesToSend', i, []) as IDataObject).values as IDataObject[])
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: ((this.getNodeParameter('columns.values', i, []) as IDataObject)
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.values as IDataObject[]);
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if (nodeVersion < 2.2) {
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item = prepareItem(valuesToSend);
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item[columnsToMatchOn[0]] = this.getNodeParameter('valueToMatchOn', i) as string;
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} else {
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item = this.getNodeParameter('columns.value', i) as IDataObject;
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}
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}
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const matchValues: string[] = [];
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if (nodeVersion < 2.2) {
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if (!item[columnsToMatchOn[0]] && dataMode === 'autoMapInputData') {
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throw new NodeOperationError(
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this.getNode(),
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"Column to match on not found in input item. Add a column to match on or set the 'Data Mode' to 'Define Below' to define the value to match on.",
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);
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}
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matchValues.push(valueToMatchOn);
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matchValues.push(columnsToMatchOn[0]);
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} else {
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columnsToMatchOn.forEach((column) => {
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matchValues.push(column);
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matchValues.push(item[column] as string);
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});
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const rowExists = await doesRowExist(db, schema, table, matchValues);
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if (!rowExists) {
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const descriptionValues: string[] = [];
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matchValues.forEach((_, index) => {
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if (index % 2 === 0) {
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descriptionValues.push(`${matchValues[index]}=${matchValues[index + 1]}`);
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}
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});
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throw new NodeOperationError(
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this.getNode(),
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"The row you are trying to update doesn't exist",
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{
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description: `No rows matching the provided values (${descriptionValues.join(
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', ',
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)}) were found in the table "${table}".`,
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itemIndex: i,
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},
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);
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}
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}
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tableSchema = await updateTableSchema(db, tableSchema, schema, table);
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if (nodeVersion >= 2.4) {
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convertArraysToPostgresFormat(item, tableSchema, this.getNode(), i);
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}
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item = checkItemAgainstSchema(this.getNode(), item, tableSchema, i);
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let values: QueryValues = [schema, table];
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let valuesLength = values.length + 1;
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let condition = '';
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if (nodeVersion < 2.2) {
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condition = `$${valuesLength}:name = $${valuesLength + 1}`;
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valuesLength = valuesLength + 2;
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values.push(columnsToMatchOn[0], valueToMatchOn);
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} else {
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const conditions: string[] = [];
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for (const column of columnsToMatchOn) {
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conditions.push(`$${valuesLength}:name = $${valuesLength + 1}`);
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valuesLength = valuesLength + 2;
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values.push(column, item[column] as string);
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}
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condition = conditions.join(' AND ');
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}
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const updateColumns = Object.keys(item).filter((column) => !columnsToMatchOn.includes(column));
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if (!Object.keys(updateColumns).length) {
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throw new NodeOperationError(
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this.getNode(),
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"Add values to update to the input item or set the 'Data Mode' to 'Define Below' to define the values to update.",
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);
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}
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const updates: string[] = [];
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for (const column of updateColumns) {
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updates.push(`$${valuesLength}:name = $${valuesLength + 1}`);
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valuesLength = valuesLength + 2;
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values.push(column, item[column] as string);
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}
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let query = `UPDATE $1:name.$2:name SET ${updates.join(', ')} WHERE ${condition}`;
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const outputColumns = this.getNodeParameter('options.outputColumns', i, ['*']) as string[];
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[query, values] = addReturning(query, outputColumns, values);
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queries.push({ query, values });
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}
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const results = await runQueries(queries, items, nodeOptions);
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return results;
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}
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