How To Index Multiple Unique Data Fields In A Single Document In Mongoose?

In my user document, I want to individually index email and username as unique fields, so that a duplicate is never entered. The problem is all of the documentation I have found f

Solution 1:

Mongoose doesn't have a built-in validation for unique fields. I recommend the package (with this you can use the unique validator on the email and username fields): mongoose-unique-validator. Extend your code with:

letuniqueValidator=require('mongoose-unique-validator');email: {
  type:String,
  required:true,
  trim:true,
  unique:true,
  index:true
},username: {
  type:String,
  required:false,
  trim:true,
  unique:true,
  index:true
}

UserSchema.plugin(uniqueValidator, {message:'is already taken.'});

Solution 2:

Add unique: true to each field's definition in the schema to create separate, unique indexes for those fields:

constUserSchema=newmongoose.Schema({email: {
    type:String,
    required:true,
    trim:true,
    unique:true
  },username: {
    type:String,
    required:false,
    trim:true,
    unique:true
  }
})

See the Indexes section on this page for the documentation.