CODEWITHSUNDEEP
amazon-web-servicesaws-lambdaaws-api-gateway
Shikasta_Kashti
Shikasta_Kashti

Reputation: 771

Passing path parameters to AWS Lambda

I'm fairly new to AWS. I'm trying to pass a path parameter to my Lambda function like if I do a request:

PUT /users/{identity_id}

and pass in the the body below parameters

{
     "name": "shikasta_kashti",
     "age": 35
}

then I cannot get event.identity_id in my lambda function. I'm able to access event.name and event.age but not event.identity_id?

I think I would have to do some Mapping Template so I went to my PUT method and in Integration Request -> Mapping Templates added application/json and then selected Mapping Template (instead of Input passthrough) and entered this:

{
    "identity_id": "$input.params('identity_id')",
}

but I still cannot get event.identity_id in my Lambda function.

Upvotes: 2

Views: 7767

Answers (1)

averydev
averydev

Reputation: 5727

Late response for someone stumbling on this...

The path params are included under event.pathParameters. Given the request PUT /users/1 you would see a pathParameters object that looks like:

{
  "identity_id": 1
}

If you didn't call your function with invoke you'll find the rest of your params in the event.body hash as a string.

To access that you'll do:

const { name, age} = JSON.parse(event.body)

Upvotes: 1

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