{ "id": "D3xrD6bKnTDX7ufR", "name": "n8n Starter Lab", "tags": [], "nodes": [ { "id": "ab1aa2d8-228a-4d55-9238-26896d76645c", "name": "Sticky Note", "type": "n8n-nodes-base.stickyNote", "position": [ -192, 848 ], "parameters": { "width": 816, "height": 320, "content": "## Live Event Lab QR Scan Attendance Booking\n\n### How it works\n\nThis workflow handles QR code-based event registration. Attendees scan a QR code, complete a registration form, and the form submits data to this webhook.\n\nThe workflow:\n- Validates required fields (name, email, eventId)\n- Checks Google Sheets for an existing registration\n- Returns a duplicate response if already registered\n- Otherwise saves the attendee, sends a Gmail confirmation, and returns success\n" }, "typeVersion": 1 }, { "id": "9c83f1cf-b344-4dc0-87a9-15f54221d33f", "name": "Sticky Note1", "type": "n8n-nodes-base.stickyNote", "position": [ -192, 1248 ], "parameters": { "color": 7, "width": 1024, "height": 432, "content": "## Receive and validate request\n\nStarts from the webhook, validates the incoming payload, and branches invalid submissions to an immediate JSON error response." }, "typeVersion": 1 }, { "id": "fced7f88-c7e6-4fe3-8ef9-16d014f9dd46", "name": "Sticky Note2", "type": "n8n-nodes-base.stickyNote", "position": [ 864, 1120 ], "parameters": { "color": 7, "width": 960, "height": 480, "content": "## Check existing registration\n\nReads the current Google Sheets rows, checks whether the submitted user is already present, and returns an already-registered response for duplicates." }, "typeVersion": 1 }, { "id": "d158af51-7a4d-4d49-b8ce-a7c8c9440291", "name": "Sticky Note3", "type": "n8n-nodes-base.stickyNote", "position": [ 1856, 1216 ], "parameters": { "color": 7, "width": 480, "height": 368, "content": "## Save and notify user\n\nHandles the non-duplicate path by appending the new registration to Google Sheets and sending a confirmation email through Gmail." }, "typeVersion": 1 }, { "id": "5454cdac-a641-4ecf-b560-aae734fbcdf2", "name": "Sticky Note4", "type": "n8n-nodes-base.stickyNote", "position": [ 2352, 1200 ], "parameters": { "color": 7, "width": 368, "height": 384, "content": "## Return success response\n\nFinishes the successful registration path by sending a JSON response back to the webhook caller." }, "typeVersion": 1 }, { "id": "054d9668-5bf1-4af8-81b1-4bc59870d197", "name": "Check Input Validity", "type": "n8n-nodes-base.code", "position": [ 160, 1376 ], "parameters": { "jsCode": "const body = $input.first().json.body || {};\nconst name = body.name?.trim();\nconst email = body.email?.trim();\nconst role = body.role?.trim() || 'Participant';\nconst eventId = body.eventId || 'n8n-starter-lab-2026';\nconst day = body.day?.trim() || 'Day 1';\nconst sheetName = day.replace(' ', '');\n\nif (!name || !email) {\n return [{ json: { valid: false, message: 'Name and email are required.' } }];\n}\n\nconst emailRegex = /^[^\\s@]+@[^\\s@]+\\.[^\\s@]+$/;\nif (!emailRegex.test(email)) {\n return [{ json: { valid: false, message: 'Please enter a valid email address.' } }];\n}\n\nconst now = new Date();\nconst dateStr = now.toLocaleDateString('en-GB', { timeZone: 'Europe/Berlin', day: '2-digit', month: 'long', year: 'numeric' });\nconst timeStr = now.toLocaleTimeString('en-GB', { timeZone: 'Europe/Berlin', hour: '2-digit', minute: '2-digit', hour12: false });\nconst nameUpper = name.toUpperCase();\n\nreturn [{\n json: {\n valid: true,\n name,\n nameUpper,\n email,\n role,\n eventId,\n day,\n sheetName,\n timestamp: now.toISOString(),\n date: dateStr,\n time: timeStr\n }\n}];\n" }, "typeVersion": 2 }, { "id": "34c8a187-2ab3-4a1a-884d-cb649f3fa2e6", "name": "Check Validity Status", "type": "n8n-nodes-base.if", "position": [ 384, 1376 ], "parameters": { "options": {}, "conditions": { "options": { "version": 1, "leftValue": "", "caseSensitive": true, "typeValidation": "strict" }, "combinator": "and", "conditions": [ { "id": "cond-001", "operator": { "type": "boolean", "operation": "true" }, "leftValue": "={{ $json.valid }}", "rightValue": true } ] } }, "typeVersion": 2 }, { "id": "f40569f3-d49a-4675-ac92-9911dc1c7f6c", "name": "Retrieve Sheet Data", "type": "n8n-nodes-base.googleSheets", "position": [ 912, 1360 ], "parameters": { "options": {}, "sheetName": { "__rl": true, "mode": "name", "value": "={{ $json.day.replace(' ', '') }}" }, "documentId": { "__rl": true, "mode": "list", "value": "1fzBymGE1OozTAxpor_KeAo8COsFZ1lEHDo3C69rOnCk", "cachedResultUrl": "https://docs.google.com/spreadsheets/d/1fzBymGE1OozTAxpor_KeAo8COsFZ1lEHDo3C69rOnCk/edit?usp=drivesdk", "cachedResultName": "Training Participants" } }, "credentials": { "googleSheetsOAuth2Api": { "name": "" } }, "typeVersion": 4, "alwaysOutputData": true }, { "id": "c497c859-221d-446d-866a-f3cfb8d2a215", "name": "Identify Duplicates", "type": "n8n-nodes-base.code", "position": [ 1136, 1360 ], "parameters": { "jsCode": "const incomingEmail = $('Check Input Validity').first().json.email.toLowerCase().trim();\nconst rows = $input.all();\n\n// If no rows returned, sheet is empty \u2014 no duplicate\nif (!rows || rows.length === 0) {\n return [{ json: { isDuplicate: false } }];\n}\n\n// Check if any row has matching email\nconst found = rows.some(row => {\n const rowEmail = (row.json.email || '').toLowerCase().trim();\n return rowEmail === incomingEmail;\n});\n\nreturn [{ json: { isDuplicate: found } }];" }, "typeVersion": 2 }, { "id": "01e2acb5-c687-4658-991a-14131b0119b2", "name": "If Duplicate Exists", "type": "n8n-nodes-base.if", "position": [ 1344, 1360 ], "parameters": { "options": {}, "conditions": { "options": { "version": 1, "leftValue": "", "caseSensitive": true, "typeValidation": "strict" }, "combinator": "and", "conditions": [ { "id": "dup-cond-001", "operator": { "type": "boolean", "operation": "true" }, "leftValue": "={{ $json.isDuplicate }}", "rightValue": true } ] } }, "typeVersion": 2 }, { "id": "f0596d41-da56-44aa-8df2-03da415736b0", "name": "Add New Entry to Sheets", "type": "n8n-nodes-base.googleSheets", "position": [ 1920, 1376 ], "parameters": { "columns": { "value": { "date": "={{ $('Check Input Validity').first().json.date }}", "name": "={{ $('Check Input Validity').first().json.name }}", "role": "={{ $('Check Input Validity').first().json.role }}", "time": "={{ $('Check Input Validity').first().json.time }}", "email": "={{ $('Check Input Validity').first().json.email }}", "eventId": "={{ $('Check Input Validity').first().json.eventId }}" }, "schema": [ { "id": "name", "type": "string", "display": true, "required": false, "displayName": "name", "defaultMatch": false, "canBeUsedToMatch": true }, { "id": "email", "type": "string", "display": true, "required": false, "displayName": "email", "defaultMatch": false, "canBeUsedToMatch": true }, { "id": "role", "type": "string", "display": true, "required": false, "displayName": "role", "defaultMatch": false, "canBeUsedToMatch": true }, { "id": "eventId", "type": "string", "display": true, "required": false, "displayName": "eventId", "defaultMatch": false, "canBeUsedToMatch": true }, { "id": "date", "type": "string", "display": true, "required": false, "displayName": "date", "defaultMatch": false, "canBeUsedToMatch": true }, { "id": "time", "type": "string", "display": true, "required": false, "displayName": "time", "defaultMatch": false, "canBeUsedToMatch": true } ], "mappingMode": "defineBelow", "matchingColumns": [], "attemptToConvertTypes": false, "convertFieldsToString": false }, "options": {}, "operation": "append", "sheetName": { "__rl": true, "mode": "name", "value": "={{ $('Check Input Validity').first().json.sheetName }}" }, "documentId": { "__rl": true, "mode": "list", "value": "1fzBymGE1OozTAxpor_KeAo8COsFZ1lEHDo3C69rOnCk", "cachedResultUrl": "https://docs.google.com/spreadsheets/d/1fzBymGE1OozTAxpor_KeAo8COsFZ1lEHDo3C69rOnCk/edit?usp=drivesdk", "cachedResultName": "Training Participants" } }, "credentials": { "googleSheetsOAuth2Api": { "name": "" } }, "typeVersion": 4 }, { "id": "440fb12f-064d-4fdd-82a3-3289da15fb20", "name": "Dispatch Confirmation Email", "type": "n8n-nodes-base.gmail", "position": [ 2144, 1376 ], "parameters": { "sendTo": "={{ $('Check Input Validity').first().json.email }}", "message": "=
n8n Training

Hi {{ $('Check Input Validity').first().json.nameUpper }},

Your attendance is confirmed! \ud83c\udf89

Thank you for registering for n8n Training. We are excited to have you join us for a hands-on session on building automations with n8n.

Registration Details

Event{{ $('Check Input Validity').first().json.eventId }}
Day{{ $('Check Input Validity').first().json.day }}
Role{{ $('Check Input Validity').first().json.role }}
Name{{ $('Check Input Validity').first().json.nameUpper }}
Date{{ $('Check Input Validity').first().json.date }}
Time{{ $('Check Input Validity').first().json.time }} (CET)

Get ready to explore real-world automation workflows, connect nodes, and build your first working pipeline \u2014 no prior experience needed.

More details about the session schedule and resources will be shared closer to the event date. Stay tuned!

If you have any questions, feel free to reply to this email.

Best regards,
Training Team

\n", "options": { "senderName": "Training Attendance" }, "subject": "=Attendance Confirmed - {{ $('Check Input Validity').first().json.eventId }}" }, "credentials": { "gmailOAuth2": { "name": "" } }, "typeVersion": 2 }, { "id": "9bbe4dda-4ae9-4ea1-9ec0-70eb49f380d5", "name": "Return Success Response", "type": "n8n-nodes-base.respondToWebhook", "position": [ 2464, 1376 ], "parameters": { "options": { "responseHeaders": { "entries": [ { "name": "Content-Type", "value": "application/json" }, { "name": "Access-Control-Allow-Origin", "value": "*" } ] } }, "respondWith": "json", "responseBody": "={{ JSON.stringify({ success: true, message: 'Attendance registered! Confirmation email sent.', name: $('Check Input Validity').first().json.name, role: $('Check Input Validity').first().json.role, eventId: $('Check Input Validity').first().json.eventId, timestamp: $('Check Input Validity').first().json.timestamp }) }}" }, "typeVersion": 1 }, { "id": "22e51da3-cd59-48f0-a817-9bc6d6cc9c61", "name": "Return Error Response", "type": "n8n-nodes-base.respondToWebhook", "position": [ 608, 1504 ], "parameters": { "options": { "responseHeaders": { "entries": [ { "name": "Content-Type", "value": "application/json" }, { "name": "Access-Control-Allow-Origin", "value": "*" } ] } }, "respondWith": "json", "responseBody": "={{ JSON.stringify({ success: false, message: $json.message || 'Validation failed.' }) }}" }, "typeVersion": 1 }, { "id": "e8b37bd3-2fc4-4e93-8eaf-2dff5699c062", "name": "Return Duplicate Response", "type": "n8n-nodes-base.respondToWebhook", "position": [ 1584, 1232 ], "parameters": { "options": { "responseHeaders": { "entries": [ { "name": "Content-Type", "value": "application/json" }, { "name": "Access-Control-Allow-Origin", "value": "*" } ] } }, "respondWith": "json", "responseBody": "={{ JSON.stringify({ success: false, duplicate: true, message: 'Attendance already marked for this email.' }) }}" }, "typeVersion": 1 }, { "id": "9bac5983-5232-48bd-a3a1-c5b212996542", "name": "Receive Webhook Data", "type": "n8n-nodes-base.webhook", "position": [ -96, 1376 ], "parameters": { "path": "register", "options": { "allowedOrigins": "*" }, "httpMethod": "POST", "responseMode": "responseNode", "authentication": "basicAuth" }, "credentials": { "httpBasicAuth": { "name": "" } }, "typeVersion": 2.1 } ], "active": false, "settings": { "binaryMode": "separate", "executionOrder": "v1" }, "versionId": "520206d0-0199-4fa4-9cc5-8d9958c19fe4", "connections": { "Identify Duplicates": { "main": [ [ { "node": "If Duplicate Exists", "type": "main", "index": 0 } ] ] }, "If Duplicate Exists": { "main": [ [ { "node": "Return Duplicate Response", "type": "main", "index": 0 } ], [ { "node": "Add New Entry to Sheets", "type": "main", "index": 0 } ] ] }, "Retrieve Sheet Data": { "main": [ [ { "node": "Identify Duplicates", "type": "main", "index": 0 } ] ] }, "Check Input Validity": { "main": [ [ { "node": "Check Validity Status", "type": "main", "index": 0 } ] ] }, "Receive Webhook Data": { "main": [ [ { "node": "Check Input Validity", "type": "main", "index": 0 } ] ] }, "Check Validity Status": { "main": [ [ { "node": "Retrieve Sheet Data", "type": "main", "index": 0 } ], [ { "node": "Return Error Response", "type": "main", "index": 0 } ] ] }, "Add New Entry to Sheets": { "main": [ [ { "node": "Dispatch Confirmation Email", "type": "main", "index": 0 } ] ] }, "Dispatch Confirmation Email": { "main": [ [ { "node": "Return Success Response", "type": "main", "index": 0 } ] ] } } }