GraphQL x MongoDB - mongodb

Question

I'm trying to read some data from a mongodb database with graphql and mongoose but everytime I query the db it returns null but no error is thrown.
Here's the code:
// Controller.js
exports.user_read = function(id) {
return new Promise((resolve, reject) => {
Contact.findById(id, function(err, user) {
err ? reject(err) : resolve(user);
}
});
}
// Resolver.js
var contact = require('Controller');
...
// root object passed as rootValue to graphqlHTTP
getUser: ({ id }) => {
contact.user_read(id)
}
...
Any tips and help would be appreciated.
P.S. This also seems to be happening with all my queries which take the same Promise format in the controller.js file.

Answer 1

You need to await contact.user_read(id). Without the await, you are simply sending back a Promise. It's most likely pending when it is returned, therefore the null return.
Including Daniel Rearden's suggestion to get rid of the extra Promise, here's what your code would look like:
// Controller.js
exports.user_read = async id => {
return Contact.findById(id, (err, user) => {
err ? reject(err) : resolve(user);
});
}
// Resolver.js
var contact = require('Controller');
...
// root object passed as rootValue to graphqlHTTP
getUser: ({ id }) => {
return await contact.user_read(id)
}
...