Unable to receive mysql data via GraphQL

Question

I'm trying to use GraphQL and mysql in a Node.js Express server.

But every time I run the query I get the following error:

The error message is as follows:

{
  "errors": [
    {
      "message": "Expected Iterable, but did not find one for field \"RootQueryType.getAllGoals\".",
      "locations": [
        {
          "line": 2,
          "column": 3
        }
      ],
      "path": [
        "getAllGoals"
      ]
    }
  ],
  "data": {
    "getAllGoals": null
  }
}

This is my GraphQL query:

query {
  getAllGoals {
    title
    progress
    goal
  }
}

I get the expected result from "SELECT * FROM (my table)", but when I try to return it as a GraphQL resolver, it gives me an error like this: < ;/p>

const RootQuery = new GraphQLObjectType({
    name: "RootQueryType",
    fields: {
        getAllGoals: {
            type: new GraphQLList(GoalType),
            resolve(parent, args) {
                return db.query("SELECT * FROM myTable", (err, result) => {
                    if (err) throw err

                    console.log(JSON.parse(JSON.stringify(result)))
                    return JSON.parse(JSON.stringify(result))
                })
            }
        }
    }
})

I've checked my GraphQLObjectType GoalType for any conflicts, but found nothing.

Answer 1

I already fixed it, I just had to create a promise containing the query (like below):

async resolve(parent, args) {
                var p = new Promise((resolve, reject) => {
                    db.query("SELECT * FROM myTable", (err, result) => {
                        console.log(JSON.parse(JSON.stringify(result)))
                        resolve(JSON.parse(JSON.stringify(result)))
                    })
                })
                return p
            }