Loading relational data in GraphQL & MongoDB -

this schema:

type user {     _id: id!     username: string     email: string!     firstname: string     lastname: string     avatar: string     createdat: date!     updatedat: date! }  type tweet {     _id: id!     text: string!     user: user!     favoritecount: int!     createdat: date!     updatedat: date! } 

and here's tweet model:

import mongoose, { schema } 'mongoose';  const tweetschema = new schema({     text: {         type: string,         minlength: [5, 'your tweet short.'],         maxlength: [144, 'your tweet long.']     },     user: {         type: schema.types.objectid,         ref: 'user'     },     favoritecount: {         type: number,         default: 0     } }, { timestamps: true });  export default mongoose.model('tweet', tweetschema); 

the above graphql schema served express this:

import { graphqlexpress } 'apollo-server-express'; import { makeexecutableschema } 'graphql-tools';  import typedefs '../graphql/schema'; import resolvers '../graphql/resolvers';  const schema = makeexecutableschema({     typedefs,     resolvers });  const app = express(); app.use(     '/graphql',      graphqlexpress(req => ({          schema     })) ); 

i use following code mock users , tweet using faker this:

https://pastebin.com/raw/kj9m8kjr

when whole thing runs, can see mongodb populated dummy tweets linked user this:

but when query via graphiql, user info not coming through:

any ideas?

your resolver gets tweets this:

tweet.find({}).sort({ createdat: -1 }); 

if check out docs, you'll notice need tell mongoose replace id reference actual document using populate:

tweet.find({}).populate('user').sort({ createdat: -1 });