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

• You'll need to require your model in your code
• Mongoose won't recognize that you've defined a model until you've called mongoose.model, and that's only called when you require model

Ex.

In the below example, you will get MissingSchemaError: Schema hasn't been registered for model “Role” if you don't do const Role = require("./role");

const mongoose = require("mongoose");
const Schema = mongoose.Schema;
const Role = require("./role");
const userSchema = new Schema(
  {
    role: { type: Schema.Types.ObjectId, ref: "Role", required: false },
    username: { type: String, required: true, trim: true },
    password: { type: String, required: true, trim: true },
    email: { type: String, required: true, trim: true }
  },
  { timestamps: true }
);

module.exports = mongoose.model("User", userSchema);