Child resolver args is empty

version: apollo-server 2.0.4

Problem Given the following resolver:

module.exports = {
  Query: {
    myQuery = (parent, args, context) => {
      // args.queryParam is defined
      returns arrayOfItems
    }
  },

  Item: {
    myResolver: async (parent, args, context) => {
      const { queryParam } = args;
      // queryParam is undefined here
      if (queryParam) {
        return { ... omitted }
      }
      return null;
    },
  },
};

query {
  myQuery(queryParam: "mystuff") {
    ...
  }
}

I have checked when myResolver is called and the second params args is always empty. Even when passing the the param when running the query.

I have checked the args of myQuery and it successfully passes the arg there, but it does not show up on myResolver. I was under the intention that myResolver should have this arg as well. I even remember it working before, but it has stopped working for me.

As a workaround I am using myQuery to set the arg in the context and then I can get it from myResolver.context.

Expected myResolver to have the arg queryParam when calling the query with it.

[rv-alake]

I’m also seeing this on apollo-server-express 2.4.8. The args param is always empty on child resolvers, from what I have seen it is because Item in your case is a type and therefore doesn’t have args. I’m not sure if that is the reason or not but it seems like it would be nice if args were passed down.

[chnoack]

By intention the query is never passed from the parent resolver to the child resolver, because child resolvers could have their own query. In this case we have a Product resolver with its query (“articleNumber”). It has a child resolver called currentPricing with its own query. In the resolver code for the currentPricing resolver you will only get the “currency” query.

fragment ProductFragment on Product {

  currentPricing(currency: $currency) {
    price {
      value
    }
    cause
  }
}

query getSingleProduct(
  $articleNumber: String
  $currency: Boolean
) {
  product(articleNumber: $articleNumber) {
    ...ProductFragment
  }
}