Validate request body.txt

Create Lambda Function with below code 
Create API Gateway 
Create Post Method 
Call post method from Postman  (While calling it from browser it should give you error)

In last example, I have created request header validation and this example is for request body validation
For body validation you have to create model 

Go to Model

Add Model Name 
Add content type as "application/json"

{
  "$schema": "http://json-schema.org/draft-04/schema#",
  "title": "Employee Status",
  "type": "object",
  "properties": {
        "status": { "type": "string", "enum": ["permanent", "contractors"]}
        },
        "required" : ["status"]
}

Create Model 
Go Back to Post method 
Method Request
Change Request validator to "validate body"

Add Request Body 
add content type "application/json" and Choose model name "body validation" and save



Lambda Code : 

import json

def lambda_handler(event, context):
    
    response =  {
    "contractors": [
        {
        "On Site": 70,
        "Total Contractors": 200
        }
        ],
            
    "permanent": [
        {
        "On Site": 20,
        "Total Employees": 2000
        }
        ]
    }
  
    # TODO implement
    return {
        'statusCode': 200,
        'body': response[event["status"]]
    }


Through postman we can test using post hit 

{
	"status": "permanent"
}

{
	"status": "contractors"
}