Mongoose Custom Validator String or Number

const mongoose = require('mongoose');

const { Schema } = mongoose;

main().catch(err => console.log(err));

async function main() {

  await mongoose.connect('mongodb://127.0.0.1:27017/test');

  // use `await mongoose.connect('mongodb://user:password@127.0.0.1:27017/test');`

//   if your database has auth enabled

}

 

const stringornumbervalidator = function(value) {

  return typeof value === 'string' || typeof value === 'number';

};

const MySchema = new Schema({

  myField: {

    type: Schema.Types.Mixed,

    validate: {

      validator: stringornumbervalidator,

      message: 'Value should be either a string or a number'

    }

  }

});

const MyModel = mongoose.model('MyModel', MySchema);