How do I get the URL parameters with AWS lambda functions?

Question

I am using Netlify functions for an API, most of which is working perfectly fine, apart from when I am needing to access URL parameters

Here is a snippet of what I have to get the parameter:

func Handler(ctx context.Context, request events.APIGatewayProxyRequest) (Response, error) {

    id := request.PathParameters["id"]

    ...
}

func main() {
    lambda.Start(Handler)
}

I have other functions that are working correctly that do not require URL params but cannot figure out how to get these ones working, I have tried multiple different selections:

https://example.com/endpoint/1
https://example.com/endpoint/id=1
https://example.com/endpoint?id=1

None of the above return the id path parameter when hitting the endpoint

Answer 1

You can use request.QueryStringParameters["id"] to get id from query param

func Handler(ctx context.Context, request events.APIGatewayProxyRequest) (Response, error) {

    id := request.QueryStringParameters["id"]

    ...
}

And call like https://example.com/endpoint?id=1