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mongodbmongoosenext.js

NextJS mongoose schema "Cannot read properties of undefined"

I have NextJS project with Mongoose schema inside of it. I keep getting following error on dev environment:

TypeError: Cannot read properties of undefined (reading 'Village')

My model file is:

import mongoose from "mongoose";
const {Schema} = mongoose;

const VillageSchema = new mongoose.Schema(
  {
    id: {type: String},
   ...
);

// prettier-ignore
export default mongoose.models.Village || mongoose.model("Village", VillageSchema);
Solution

  • Try to add optional chaining to the exported value:

    // prettier-ignore
export default mongoose.models?.Village || mongoose.model("Village", VillageSchema);