Mongoose Subdocument in another Invalid Schema error

Question

I have 2 separate files, one encapsulates the Slot Schema, and another for the Location Schema. I'm trying to have a field in the Slot Schema that references the location Schema.

   const mongoose = require('mongoose')
   const locationSchema = require('./location')

   const slotSchema = mongoose.Schema({
      time: {
        required: true,
        type: String
      },
     typeOfSlot:{
        required: true,
        type: String
     },
     academic_mem_id:{
        required: true,
        default: null,
        type: Number
     },
     course_id:{
        required: true,
        type: Number
    },
    location: [ locationSchema] // adjust
});

module.exports = mongoose.model('slots', slotSchema)

In a separate File:

const mongoose = require('mongoose')
const locationSchema =  mongoose.Schema({
    name:{
         type:String,
         required: true
    },
    capacity:{
        type: Number,
        required: true
    },
    type:{
        type:String,
        required:true
    }
});

module.exports = mongoose.model('location', locationSchema)

I get this error when I run :

 throw new TypeError('Invalid schema configuration: ' +
    ^

 TypeError: Invalid schema configuration: `model` is not a valid type within the array `location`.

I'd really appreciate it if you'd help me figure out why the code above is wrong. I want to export both the model and the Schema.

Answer 1

You are not exporting the locationSchema, but the location model. That is something entirely different and that is the reason you get the model is not a valid type within the array error.
Export only the schema and create/export the model in a separate file, e.g. locationModel.

const mongoose = require('mongoose')
const { Schema } = mongoose;

const locationSchema =  new Schema({
    name:{
         type:String,
         required: true
    },
    capacity:{
        type: Number,
        required: true
    },
    type:{
        type:String,
        required:true
    }
});

module.exports = locationSchema;

Or if you want to keep both in the same file and export both:

module.exports = {
  locationSchema,
  locationModel,
};

And import them like so:

const { locationSchema, locationModel } = require('path/to/location.js');