Mongoose - validate email syntax

Question

Mongoose - validate email syntax

I have a mongoose schema for users (UserSchema) and I'd like to validate whether the email has the right syntax. The validation that I currently use is the following:

UserSchema.path('email').validate(function (email) {
  return email.length
}, 'The e-mail field cannot be empty.')

However, this only checks if the field is empty or not, and not for the syntax.

Does something already exist that I could re-use or would I have to come up with my own method and call that inside the validate function?

node.js
mongodb
mongoose

Answer 1

you could also use the match or the validate property for validation in the schema

example

var validateEmail = function(email) {
    var re = /^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/;
    return re.test(email)
};

var EmailSchema = new Schema({
    email: {
        type: String,
        trim: true,
        unique: true,
        required: 'Email address is required',
        validate: [validateEmail, 'Please fill a valid email address'],
        match: [/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/, 'Please fill a valid email address']
    }
});

Answer 2

You can use a regex. Take a look at this question: Validate email address in Javascript?

I've used this in the past.

UserSchema.path('email').validate(function (email) {
   var emailRegex = /^([\w-\.]+@([\w-]+\.)+[\w-]{2,4})?$/;
   return emailRegex.test(email.text); // Assuming email has a text attribute
}, 'The e-mail field cannot be empty.')

Answer 3

I use validator for my input sanitation, and it can be used in a pretty cool way.

Install it, and then use it like so:

var validator = require('validator');
// ... 

var EmailSchema = new Schema({
    email: { 
        //... other setup
        validate: [ validator.isEmail, 'invalid email' ]
    }
});

works a treat, and reads nicely.

(edit: fixed typo. Thanks!)

Answer 4

Kris Selbekk's answer is quite useful and easy to get, but just one detail:

use 'validate' instead of 'validator' when defined Schema, e.g:

var EmailSchema = new Schema({
  email: { 
    //... other setup
    validate: [ validator.isEmail, 'invalid email' ] // use 'validate' here
  }
}