field resolver is not being called

Hello,

Could you please help me to find where can I find an answer or documentation describing this situation?

I know I can easily do this if I use javascript for building the scheme, but the syntax needs much more words 😄

Here is the code of schema and resolver:

const { buildSchema } = require('graphql');

const schema = buildSchema(/* GraphQL */ `
  type Position {
    x: String
    y: String
  }

  type Location {
    name: String!
    position: Position
  }

  type Query {
    locations: [Location!]!
  }
`);

const root = {
  Location: {
    position() {
      // this line is not called <-------------------
      return new Promise(resolve => {
        setTimeout(() => {
          resolve({ x: 111, y: 222 });
        }, 300);
      });
    },
  },
  locations() {
    return [{ name: 'test' }];
  },
};

module.exports = {
  schema,
  root,
};

Here is the query

{
  locations {
    name
    position {
      x
      y
    }
  }
}

here is the result:

{
  "data": {
    "locations": [
      {
        "name": "test",
        "position": null
      }
    ]
  }
}

Versions:

    "express": "^4.14.1",
    "express-graphql": "^0.6.6",
    "graphql": "^0.10.1",

Thanks

[sai-frogo]

@IvanGoncharov @asci Can you post the root variable here. I still couldn’t understand

[IvanGoncharov]

@vivex In @asci example you should change Location => 'locations` here:

const root = {
  Location: {
    position() {

Details here: http://graphql.org/graphql-js/object-types/