Book Image

Mongoose for Application Development

By : Simon Holmes
Book Image

Mongoose for Application Development

By: Simon Holmes

Overview of this book

Mongoose is all about putting the data model where it should be: in your application. You can control everything from within your application in JavaScript, eliminating the need to work with the database or a separate management system. Mongoose for Application Development is a practical, hands-on guide that takes you from installing the technology stack through the steps of developing a web application. It covers the key features of Mongoose and how to use them to rapidly develop a Node.js and MongoDB application. This book introduces the full technology stack of Node.js, MongoDB, Express, and Mongoose. It will take you through the process of building an application on this stack with a focus on how Mongoose makes the process quicker and easier. You will see how Mongoose removes a layer of complexity when dealing with MongoDB whilst giving you more control over your data from your application. You will learn how to define schemas and models for your data in JavaScript. Using these schemas and models, you will learn how to build the cornerstone of any web application that will include CRUD operations (creating, reading, updating, and deleting data). If you want to learn how to build applications quickly and efficiently using Node.js, then Mongoose and this book are ideal for you. Using practical examples throughout, Mongoose for Application Development not only teaches you about the concepts of Mongoose, but walks through how to use them to build a real-life application.

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Mongoose for Application Development
Simon Holmes
Aug, 2013 | 142 pages
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Table of Contents (18 chapters)
Mongoose for Application Development
Mongoose for Application Development
Credits
Credits
About the Author
About the Author
About the Reviewers
About the Reviewers
www.PacktPub.com
www.PacktPub.com
Preface
Preface
Free Chapter
1
Introducing Mongoose to the Technology Stack
Introducing Mongoose to the Technology Stack
The technology stack – Node.js, npm, MongoDB, and Express
What Mongoose is all about
Installing the full stack
Summary
2
Establishing a Database Connection
Establishing a Database Connection
Mongoose default connection
About the connection string
Connection options
Closing the connection
Connection events
Connecting our project
Summary
3
Schemas and Models
Schemas and Models
Introducing schemas
Data types allowed in schemas
Where to write the schemas
Writing a schema
Building models
Setting the collection name
Our complete code
Summary
4
Interacting with Data – an Introduction
Interacting with Data – an Introduction
Model methods and instance methods
Setting up the project
Summary
5
Interacting with Data – Creation
Interacting with Data – Creation
Creating an instance
Saving an instance
Creating and saving database entry in one step
CRUD – create data
Summary
6
Interacting with Data – Reading, Querying, and Finding
Interacting with Data – Reading, Querying, and Finding
Approaches to find and read data
CRUD – reading user and project data
Summary
7
Interacting with Data – Updating
Interacting with Data – Updating
Model helper methods
The three-step find-edit-save approach
CRUD – editing users and projects
Summary
8
Interacting with Data – Deleting
Interacting with Data – Deleting
Deleting data
CRUD – deleting user and projects
Summary
9
Validating Data
Validating Data
Mongoose validation – the basics
Understanding validation errors
Doing it your way – create custom validation
Adding validation to our project
Summary
10
Complex Schemas
Complex Schemas
Population – references to other collections
Subdocuments
Data management when modifying existing schemas
Summary
11
Plugins – Re-using Code
Plugins – Re-using Code
Reusable schema plugins
Sharing with the community
Summary
Index
Index

Setting up the project

Before we get going on the Mongoose code, we need to get a couple of things in order in our project:

  • Our approach to code structure

  • The URLs/routes we'll need

Code structure

If we think in an MVC way, our Express project already has a model folder and a views folder. The model folder holds our schema definitions, Mongoose models and Mongoose connection. The views folder contains Jade templates for page layout. The controller aspect sits in the routes folder of a standard express installation. We could separate it out or move it around, but as the focus of this book is on using Mongoose, but not on MVC best practices, let's work with the default setup.

Adding the routes files

A good starting point when thinking about setting up your routes is to have one routes file for each Mongoose model. Given the non-normalized data structure of MongoDB there aren't generally too many of these—we're not talking about individual tables in a relational database here! Also, as we saw earlier...

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