Getting the event body attributes in Ruby with AWS Lambda

Question

So I'm new to ruby and I have a simple REST API.

The post request looks like this:

POST /endpoint, { 'message': 1 }

My lambda handler looks like this:

def run(event:, context:)
    puts "#{event['body']}"
    # prints the request body
end

I'm trying to figure out how to store message, which is an int in a variable.

I was trying to do something like this but doesn't work

my_int = event['body']['message']

score 3 · Accepted Answer · answered Feb 19 '20 at 22:22

event['body'] is going to return a string, a json string.

You need to parse it with something like this.

body = JSON.parse(event['body'])
my_int = body['message']

Also if you were to do.

puts event.inspect

instead of

puts "#{event['body']}"

you would have been able to see that body returned a string and not an object. I hope that helps and good luck.

1 Answers1