MissingSchemaError: Schema hasn't been registered for model “User”

Question

In my models/user.js file:

var mongoose = require(\'mongoose\');
var Schema = mongoose.Schema;

var userSchema = new Schema({
    (define schema         


        

Answer 1

I've also experienced this error with ES6/Typescript. Even I imported the model, the error still persisted. According to docs here

MongooseError.MissingSchemaError

Thrown when you try to access a model that has not been registered yet

    import { model, Schema } from 'mongoose';
    import Company from './CompanyModel';

    const ProjectSchema = new Schema({
        company: { type: Schema.Types.ObjectId, ref: "Company" }
    });

    export default model('Project', ProjectSchema);

The tips was just to make sure to use the model explicitly, so changing ref:"Company" into ref:Company.modelName seemed fixed it.

I hope that helps some of you