POST request Help

MongoDB Realm Functions & Triggers
#1

I’m trying to build out a function that will accept a payload of IDs, query the DB and return related documents.

At the moment I have these values hardcoded in my function, but the client calling this API is getting an empty object.

My function is:

 exports = async function (payload, response) {

   const collection = context.services.get("mongodb-atlas")
                      .db("mydb")
                      .collection("my collection");

const foundWantedCards = await collection.find(
 { card_id: { $in: [ "61ddf66c68ebbba1a4084e65", "61ddf5b768ebbba1a4fd2c33" ] }, forTrade:"Yes" }
);

return foundWantedCards
}

When I run this function within the editor I get a result

> result: 
[
  {
    "_id": {
      "$oid": "61e995ff2738954edae011ec"
    },
    "card_id": "61ddf5b768ebbba1a4fd2c33",
...

which is correct, but the value of FoundWantedCards is empty. How should I return the result in the reponse?

Also, how should I access the payload that is sent in the POST request? I’ve tried via EJSON.parse(payload.body.text()) but again that is empty.

Any help much appreciated!

#2

OK, I am successfully getting a response back now, but I still can’t figure out how to access the payload in the POST request. payload is truncated in my logs so I can’t see all the values, but payload.body doesn’t show anything. I’ve tried looking in context but can’t find anything either.

In my logs I do see an object

{
  "name": "wantedCards",
  "arguments": [
    {
      "query": {},
      "headers": {
        "Content-Length": [
          "55"
        ],
        "Sec-Ch-Ua-Mobile": [
          "?0"
        ],
        "User-Agent": [
          "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.83 Safari/537.36"
        ],
        "Origin": [
          "http://localhost:3000"
        ],
        "Sec-Fetch-Mode": [
          "cors"
        ],
        "Sec-Fetch-Dest": [
          "empty"
        ],
        "X-Envoy-External-Address": [
          "51.194.154.211"
        ],
        "Sec-Ch-Ua": [
          "\" Not A;Brand\";v=\"99\", \"Chromium\";v=\"99\", \"Google Chrome\";v=\"99\""
        ],
        "Content-Type": [
          "application/json"
        ],
        "Referer": [
          "http://localhost:3000/"
        ],
        "Accept-Encoding": [
          "gzip, deflate, br"
        ],
        "X-Cluster-Client-Ip": [
          "51.194.154.211"
        ],
        "X-Request-Id": [
          "afc2ddf7-883a-4287-83f7-0b96e45bb098"
        ],
        "Sec-Ch-Ua-Platform": [
          "\"macOS\""
        ],
        "Accept": [
          "*/*"
        ],
        "Sec-Fetch-Site": [
          "cross-site"
        ],
        "Accept-Language": [
          "en-GB,en-US;q=0.9,en;q=0.8"
        ],
        "X-Forwarded-For": [
          "51.194.154.211"
        ],
        "X-Forwarded-Proto": [
          "https"
        ]
      },
      "body": "eyI2MWRkZjY2YzY4ZWJiYmExYTQwODRlNjUiOiI2MWRkZjViNzY4ZWJiYmExYTRmZDJjMzMifQ=="
    },
    {}
  ]
}

an I assume that the body property here is the encoded payload, but how do I access this in my function?