Book Image

MEAN Web Development

By : Amos Q. Haviv
Book Image

MEAN Web Development

By: Amos Q. Haviv

Overview of this book

The MEAN stack is a collection of the most popular modern tools for web development; it comprises MongoDB, Express, AngularJS, and Node.js. Starting with MEAN core frameworks, this project-based guide will explain the key concepts of each framework, how to set them up properly, and how to use popular modules to connect it all together. By following the real-world examples shown in this tutorial, you will scaffold your MEAN application architecture, add an authentication layer, and develop an MVC structure to support your project development. Finally, you will walk through the different tools and frameworks that will help expedite your daily development cycles. Watch how your application development grows by learning from the only guide that is solely orientated towards building a full, end-to-end, real-time application using the MEAN stack!
Table of Contents (18 chapters)
MEAN Web Development
About the Author
About the Reviewers

Model validation

One of the major issues when dealing with data marshaling is validation. When users input information to your application, you'll often have to validate that information before passing it on to MongoDB. While you can validate your data at the logic layer of your application, it is more useful to do it at the model level. Luckily, Mongoose supports both simple predefined validators and more complex custom validators. Validators are defined at the field level of a document and are executed when the document is being saved. If a validation error occurs, the save operation is aborted and the error is passed to the callback.

Predefined validators

Mongoose supports different types of predefined validators, most of which are type-specific. The basic validation of any application is of course the existence of value. To validate field existence in Mongoose, you'll need to use the required property in the field you want to validate. Let's say you want to verify the existence of a username...