Lab 04 — Contact Form + DynamoDB

1. Search for DynamoDB and click it
2. Left sidebar → Tables → Create table
3. Table name: ContactFormSubmissions
4. Partition key: submissionId — Type: String
5. Table settings: Customize settings
6. Capacity mode: On-demand
7. Click Create table → wait for status: Active

1. Search for IAM and click it
2. Left sidebar → Roles → search for LambdaSESRole → click it
3. Permissions tab → Add permissions → Attach policies
4. Search for AmazonDynamoDBFullAccess → check it → Add permissions

Open ContactFormHandler → Code tab. Delete all existing code and paste the following. Replace both email addresses.

import json, boto3, uuid
from datetime import datetime, timezone

ses      = boto3.client('ses', region_name='us-east-1')
dynamodb = boto3.resource('dynamodb', region_name='us-east-1')
table    = dynamodb.Table('ContactFormSubmissions')

SENDER_EMAIL    = 'your-email@example.com'  # replace
RECIPIENT_EMAIL = 'your-email@example.com'  # replace

def lambda_handler(event, context):
    try:
        body    = json.loads(event.get('body', '{}'))
        name    = body.get('name', 'Unknown')
        email   = body.get('email', 'Unknown')
        message = body.get('message', 'No message')
        sub_id  = str(uuid.uuid4())
        ts      = datetime.now(timezone.utc).isoformat()

        # Write to DynamoDB
        table.put_item(Item={
            'submissionId': sub_id, 'timestamp': ts,
            'name': name, 'email': email, 'message': message
        })

        # Send email via SES
        ses.send_email(
            Source=SENDER_EMAIL,
            Destination={'ToAddresses': [RECIPIENT_EMAIL]},
            Message={
                'Subject': {'Data': f'New contact from {name}'},
                'Body': {'Text': {'Data':
                    f'Name: {name}\\nEmail: {email}\\n'
                    f'Message: {message}\\n\\nID: {sub_id}\\nTime: {ts}'
                }}
            }
        )
        return {'statusCode': 200,
                'headers': {'Access-Control-Allow-Origin': '*'},
                'body': json.dumps({'message': 'Saved!', 'submissionId': sub_id})}
    except Exception as e:
        return {'statusCode': 500,
                'headers': {'Access-Control-Allow-Origin': '*'},
                'body': json.dumps({'error': str(e)})}

1. Click Deploy → wait for Changes deployed

Click the Test tab. Create a new test event with this JSON:

{
  "body": "{\"name\": \"Test User\", \"email\": \"test@example.com\", \"message\": \"DynamoDB test\"}",
  "httpMethod": "POST"
}

1. Click Test
2. Confirm Execution result: succeeded and a submissionId in the response
3. Check your email inbox — the email should arrive with the submission ID

1. DynamoDB → Tables → ContactFormSubmissions
2. Click Explore table items (orange button, top right)
3. Click on the item to see all 5 attributes: submissionId, timestamp, name, email, message
4. Submit the live form on your website — new items appear instantly