expressmongotest/chapter25/10_user_schema_with_validated_email.js

var mongoose = require('mongoose');

// simple but incomplete email regexp:
var emailRegexp = /.+\@.+\..+/;

var UserSchema = new mongoose.Schema({
  username: {type: String, unique: true},
  name: String,
  password: String,
  email: {
    type: String, 
    required: true,
    match: emailRegexp

  }
});

module.exports = UserSchema;