question.js

const mongoose = require('mongoose');


const questionSchema = mongoose.Schema({
    _id: mongoose.Schema.Types.ObjectId,
    createdOn: { type: Date, default: Date.Now },
    createdBy: { type: String, ref: 'User' }, // represents the user asking the question
    meetup: { type: mongoose.Schema.Types.ObjectId, ref: 'Meetup', required: true }, // represents the meetup the question is for
    title: { type: String },
    bodyMessage: { type: String },
    votes: { type: mongoose.Schema.Types.ObjectId
        // upvotes: {type: Number, default: 0, ref: 'Vote'},
        // downvotes: {type: Number, default: 0, ref: 'Vote'},
    }
});

module.exports = mongoose.model('Question', questionSchema);


router.get('/', checkAuth, (req, res, next) => {
    Question.find({})
    //.populate('votes')
        .select('_id meetup title body createdBy votes')
        .exec()
        .then(records => {
            records.forEach(async function (record) {
                record.votes = await getVotes(record._id)
            })
            res.status(200).json({
                count:records.length,
                questions: records
            });
        })
        .catch(err => {
            console.log(err);
            res.status(500).json({
                error: err
            });
        })
});

async function getVotes(qid) {
    Votes.find({questionId:qid}).select('upvotes, downvotes').exec()
        .then(votes => {
           return votes;
        })
        .catch(err => {
           return null
        })
}