Samuel Heredia This workflow corresponds to n8n.io template #8071 — we link there as the canonical source.
This workflow follows the Form → Form Trigger recipe pattern — see all workflows that pair these two integrations.
The workflow JSON
Copy or download the full n8n JSON below. Paste it into a new n8n workflow, add your credentials, activate. Full import guide →
{
"id": "9loQL9vFR9lofvwj",
"meta": {
"templateCredsSetupCompleted": true
},
"name": "Contact Form Workflow with Data Validation and MongoDB Integration",
"tags": [],
"nodes": [
{
"id": "63569954-4739-4730-81eb-a004f3f24fd8",
"name": "Sticky Note",
"type": "n8n-nodes-base.stickyNote",
"position": [
-288,
-384
],
"parameters": {
"width": 1536,
"height": 624,
"content": "# n8n Workflow: Contact Form Workflow with Data Validation and MongoDB Integration\nAuthor: [Samuel Heredia - LinkedIn](https://www.linkedin.com/in/samuel-heredia-2b5b7a98/)\n## **Description**\nThis workflow in n8n is designed to handle contact form submissions securely and efficiently, ensuring that all collected data is validated, formatted, and stored in a MongoDB Atlas database.\n\n## **Workflow Steps**"
},
"typeVersion": 1
},
{
"id": "5af1ce8f-100b-48e4-bb0a-81e7bbb78861",
"name": "Validate Pattern",
"type": "n8n-nodes-base.code",
"position": [
208,
80
],
"parameters": {
"jsCode": "const item = $input.first();\n\n// Validate Phone Number\nconst phone = item.json[\"Phone Number\"];\nconst phoneRegex = /^(\\+?\\d{1,4}[\\s-]?)?(\\(?\\d{1,4}\\)?[\\s-]?)?[\\d\\s-]{5,}$/;\nif (!phoneRegex.test(phone)) {\n item.json[\"Phone Number\"] = \"Is not Valid\";\n}\n\n// Validate other fields for dangerous patterns\nconst dangerousPattern = /('|;|--|\\/\\*|\\*\\/|xp_|exec|drop|select|insert|delete|update|union|script|<|>)/i;\nfor (const field of [\"Name\", \"Last Name\", \"Email\"]) {\n const value = item.json[field];\n if (dangerousPattern.test(value)) {\n item.json[field] = \"Is not Valid\";\n }\n}\n\nreturn item.json;"
},
"typeVersion": 2
},
{
"id": "afac30d0-547d-412b-b42d-16948ac42ae0",
"name": "Sticky Note1",
"type": "n8n-nodes-base.stickyNote",
"position": [
-816,
-48
],
"parameters": {
"color": 5,
"width": 688,
"height": 192,
"content": "### 1. On Form Submission\na. Acts as the entry point of the workflow.\nb. Captures user inputs from the contact form with the following fields:\n - Name\n - Last Name\n - Email\n - Phone Number\n"
},
"typeVersion": 1
},
{
"id": "1142f3b4-caf6-43fa-a200-ecb9da3acf86",
"name": "Sticky Note2",
"type": "n8n-nodes-base.stickyNote",
"position": [
-816,
176
],
"parameters": {
"color": 5,
"width": 688,
"height": 208,
"content": "### 2. Code Node (Validation Layer)\n\n- Implements input validation to ensure data integrity and security.\n\n- Checks for and removes potential SQL injection attempts or malicious characters.\n\n- Validates that the Phone Number field follows a proper phone number format.\n\n- If any field fails validation, the record is tagged as \u201cIs not Valid\u201d to prevent unsafe data storage."
},
"typeVersion": 1
},
{
"id": "158c7af4-ecb2-4af6-b487-9e73513c5eab",
"name": "Sticky Note3",
"type": "n8n-nodes-base.stickyNote",
"position": [
-816,
432
],
"parameters": {
"color": 5,
"width": 688,
"height": 176,
"content": "### 3. Edit Fields Node (Data Formatting)\n\n- Transforms the validated form fields into **snake_case** format.\n\n- Ensures consistent field naming convention for MongoDB storage (e.g., first_name, last_name, phone_number)"
},
"typeVersion": 1
},
{
"id": "8412f473-fb8d-42e0-bd13-d317196ad36d",
"name": "Sticky Note8",
"type": "n8n-nodes-base.stickyNote",
"position": [
-64,
0
],
"parameters": {
"color": 4,
"width": 198,
"height": 240,
"content": "## 1"
},
"typeVersion": 1
},
{
"id": "112fa7b6-f7f5-4a2c-afe9-bc7778d50e97",
"name": "Sticky Note9",
"type": "n8n-nodes-base.stickyNote",
"position": [
160,
0
],
"parameters": {
"color": 4,
"width": 198,
"height": 240,
"content": "## 2"
},
"typeVersion": 1
},
{
"id": "f52b7c18-5126-4d1d-962a-c696097c7fe6",
"name": "Sticky Note10",
"type": "n8n-nodes-base.stickyNote",
"position": [
608,
0
],
"parameters": {
"color": 4,
"width": 198,
"height": 240,
"content": "## 4"
},
"typeVersion": 1
},
{
"id": "7a5783da-8617-4b60-b29c-b427c1c16289",
"name": "On form submission",
"type": "n8n-nodes-base.formTrigger",
"position": [
-16,
80
],
"parameters": {
"options": {
"ignoreBots": true,
"appendAttribution": false
},
"formTitle": "\ud83d\udce9 Get in Touch with Us",
"formFields": {
"values": [
{
"fieldLabel": "Name",
"placeholder": "Name",
"requiredField": true
},
{
"fieldLabel": "Last Name",
"placeholder": "Last Name",
"requiredField": true
},
{
"fieldType": "email",
"fieldLabel": "Email",
"placeholder": "Email",
"requiredField": true
},
{
"fieldLabel": "Phone Number",
"placeholder": "(+XX ) XXXXXXXX",
"requiredField": true
}
]
},
"formDescription": "We\u2019d love to hear from you! Whether you have a question, feedback, or simply want to connect, fill out the form below and our team will get back to you as soon as possible"
},
"typeVersion": 2.3
},
{
"id": "299f1e43-a848-4c9d-8c4c-1759a5ca7aca",
"name": "Insert documents",
"type": "n8n-nodes-base.mongoDb",
"position": [
656,
80
],
"parameters": {
"fields": "name, last_name, email, phone, submitted_at",
"options": {
"dateFields": "={{ $json.name }},{{ $json.last_name }},{{ $json.email }},{{ $json.phone }},{{ $json.submitted_at }}",
"useDotNotation": true
},
"operation": "insert",
"collection": "contact"
},
"credentials": {
"mongoDb": {
"name": "<your credential>"
}
},
"typeVersion": 1.2
},
{
"id": "b78fa066-00f8-48c5-979e-d8da9d6c1593",
"name": "Edit Fields",
"type": "n8n-nodes-base.set",
"position": [
432,
80
],
"parameters": {
"options": {},
"assignments": {
"assignments": [
{
"id": "4569533b-44c5-4c3b-a0af-0634e2ffba4c",
"name": "name",
"type": "string",
"value": "={{ $json.Name }}"
},
{
"id": "f828360a-e1f6-46ed-856a-0768efdb073e",
"name": "last_name",
"type": "string",
"value": "={{ $json[\"Last Name\"] }}"
},
{
"id": "46322cb3-5080-4902-b5dc-110e1047054c",
"name": "email",
"type": "string",
"value": "={{ $json.Email }}"
},
{
"id": "a5648b31-50f9-4022-b5bb-0a9d43027341",
"name": "phone",
"type": "string",
"value": "={{ $json[\"Phone Number\"] }}"
},
{
"id": "3cc35bbb-3ce1-4bab-bb1c-a3983a1ed2d1",
"name": "submitted_at",
"type": "string",
"value": "={{ $json.submittedAt }}"
}
]
}
},
"typeVersion": 3.4
},
{
"id": "e1312e0c-f824-4d5b-bcc4-86ffbe82c0ea",
"name": "Sticky Note11",
"type": "n8n-nodes-base.stickyNote",
"position": [
384,
0
],
"parameters": {
"color": 4,
"width": 198,
"height": 240,
"content": "## 3"
},
"typeVersion": 1
},
{
"id": "dca3c2c8-5ed0-48ef-a1ee-692fdd66e08b",
"name": "Sticky Note12",
"type": "n8n-nodes-base.stickyNote",
"position": [
832,
0
],
"parameters": {
"color": 4,
"width": 198,
"height": 240,
"content": "## 5"
},
"typeVersion": 1
},
{
"id": "8ba91a2e-f86a-49c9-8ea4-c0117669b0a3",
"name": "Form Ending",
"type": "n8n-nodes-base.form",
"position": [
880,
80
],
"parameters": {
"options": {},
"operation": "completion",
"completionTitle": "\u2705 Message Sent Successfully",
"completionMessage": "Thank you for reaching out! Your message has been received, and our team will get back to you shortly. We appreciate your interest and look forward to connecting with you."
},
"typeVersion": 2.3
},
{
"id": "2b610b7f-5477-47e2-adc8-db94db46ed0f",
"name": "Sticky Note4",
"type": "n8n-nodes-base.stickyNote",
"position": [
-816,
656
],
"parameters": {
"color": 5,
"width": 688,
"height": 144,
"content": "### 4. MongoDB Node (Insert Documents)\n- Handles database persistence by inserting the validated and formatted data into MongoDB.\n\n- Uses MongoDB Atlas as the data store, with connection established via a secure connection URL."
},
"typeVersion": 1
},
{
"id": "8021689f-b978-434f-bd21-480518b89868",
"name": "Sticky Note5",
"type": "n8n-nodes-base.stickyNote",
"position": [
-816,
848
],
"parameters": {
"color": 5,
"width": 688,
"height": 144,
"content": "### 5. Form Ending Node\n- Provides a clean conclusion to the workflow.\n\n- Returns a confirmation message to the user indicating successful submission and storage of their contact details."
},
"typeVersion": 1
}
],
"active": false,
"settings": {
"executionOrder": "v1"
},
"versionId": "5dbb6364-7f28-46f5-b95e-46e7cd558a69",
"connections": {
"Edit Fields": {
"main": [
[
{
"node": "Insert documents",
"type": "main",
"index": 0
}
]
]
},
"Insert documents": {
"main": [
[
{
"node": "Form Ending",
"type": "main",
"index": 0
}
]
]
},
"Validate Pattern": {
"main": [
[
{
"node": "Edit Fields",
"type": "main",
"index": 0
}
]
]
},
"On form submission": {
"main": [
[
{
"node": "Validate Pattern",
"type": "main",
"index": 0
}
]
]
}
}
}
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About this workflow
This n8n workflow securely processes contact form submissions by validating user input, formatting the data, and storing it in a MongoDB database. The flow ensures data consistency, prevents unsafe entries, and provides a confirmation response back to the user.
Source: https://n8n.io/workflows/8071/ — original creator credit. Request a take-down →
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