usage with apollo-server v2

[sajadghawami]

Hey guys,

so i am trying to get apollo-server v2 to work with the field helper to use attributeFields. I used this before:

const typeDefs = `
  type User {
    id: ID!
    firstName: String!
    lastName: String!
  }

  type Query {
    users: [User!]!
    user(id: ID!): User
  }
`;

const resolvers = {
  Query: {
    users: (parent, args, { db }, info) => db.user.findAll(),
    user: (parent, { id }, { db }, info) => db.user.findById(id),
  },
};

const server = new ApolloServer({
  typeDefs: gql(typeDefs),
  resolvers,
  context: { db },
});

which worked just fine.

Now, using the following syntax:

const userType = new GraphQLObjectType({
  name: 'user',
  description: 'A user',
  fields: attributeFields(user),
});

// schema
const schema = new GraphQLSchema({
  query: new GraphQLObjectType({
    name: 'Query',
    fields: {
      users: {
        type: new GraphQLList(userType),
        resolve: resolver(user),
      },
    },
  }),
});

const server = new ApolloServer({
  typeDefs: gql(schema),
  resolvers,
  context: { db },
});

Gives me TypeError: Cannot read property 'replace' of undefined.

Any help would be appreciated! Thanks in advance :)

[mickhansen]

I don't have any experience with apollo-server version 2, you'll have to apply some basic debugging to the stack trace to figure out what is happening.

(Including the full stack of an error is always helpful)

[sajadghawami]

thank you for the quick reply!

logging the above const schema gives me the following:

 GraphQLSchema {
     astNode: undefined,
     extensionASTNodes: undefined,
     _queryType: Query,
     _mutationType: undefined,
     _subscriptionType: undefined,
     _directives: [ @include, @skip, @deprecated ],
     _typeMap:
      { Query: Query,
        user: user,
        Int: Int,
        String: String,
        Boolean: Boolean,
        Date: Date,
        __Schema: __Schema,
        __Type: __Type,
        __TypeKind: __TypeKind,
        __Field: __Field,
        __InputValue: __InputValue,
        __EnumValue: __EnumValue,
        __Directive: __Directive,
        __DirectiveLocation: __DirectiveLocation },
     _implementations: {},
     _possibleTypeMap: undefined,
     __validationErrors: undefined,
     __allowedLegacyNames: [] }

which obviously seems to be the problem.

thats the stack-trace:

 TypeError: Cannot read property 'replace' of undefined
     at normalize (/backend/node_modules/graphql-tag/lib/graphql-tag.umd.js:14:17)
     at parseDocument (/backend/node_modules/graphql-tag/lib/graphql-tag.umd.js:129:18)
     at gql (/backend/node_modules/graphql-tag/lib/graphql-tag.umd.js:176:10)
     at Object.<anonymous> (/backend/src/app.js:45:13)
     at Module._compile (module.js:641:30)
     at Object.Module._extensions..js (module.js:652:10)
     at Module.load (module.js:560:32)
     at tryModuleLoad (module.js:503:12)
     at Function.Module._load (module.js:495:3)
     at Module.require (module.js:585:17)
     at require (internal/module.js:11:18)
     at Object.<anonymous> (/backend/src/bin/www:11:13)
     at Module._compile (module.js:641:30)
     at Object.Module._extensions..js (module.js:652:10)
     at Module.load (module.js:560:32)
     at tryModuleLoad (module.js:503:12)
     at Function.Module._load (module.js:495:3)
     at Function.Module.runMain (module.js:682:10)
     at startup (bootstrap_node.js:191:16)
     at bootstrap_node.js:613:3

[mickhansen]

No part of the stack trace goes through graphql-sequelize, have you verified the issue is actually with attributeFields? Does the error not occur if you manually define userType?

[sajadghawami]

Thanks for your help, i striped out apollo for now and this seems to work!