Data null after saving entity with Moongose and GraphQL
You're mixing Promises and callbacks. exec() will return a Promise, but only if doesn't have any arguments passed to it. Additionally, you need to return the Promise that's returned by exec().
return budget.save().then((res) => { return Budget.findById(res._id) // missing return here .populate('User') .populate('Vehicle') .exec() // don't need anything else})You can clean this up a little more:
return budget.save() .then(res => Budget.findById(res._id) .populate('User') .populate('Vehicle') .exec())If you need to transform the results returned by findById before turning them over to the client:
return budget.save() .then(res => Budget.findById(res._id) .populate('User') .populate('Vehicle') .exec()) .then(res => { res.foo = 'Foo' return res })