Book Image

Serverless Web Applications with React and Firebase

By : Harmeet Singh, Mayur Tanna
Book Image

Serverless Web Applications with React and Firebase

By: Harmeet Singh, Mayur Tanna

Overview of this book

ReactJS is a wonderful framework for UI development. Firebase as a backend with React is a great choice as it is easy, powerful, and provides great developer experience. It removes a lot of boilerplate code from your app and allows you to focus on your app to get it out quickly to users. Firebase with React is also a good choice for Most Viable Product (MVP) development. This book provides more practical insights rather than just theoretical concepts and includes basic to advanced examples – from hello world to a real-time seat booking app and Helpdesk application This book will cover the essentials of Firebase and React.js and will take you on a fast-paced journey through building real-time applications with Firebase features such as Cloud Storage, Cloud Function, Hosting and the Realtime Database. We will learn how to secure our application by using Firebase authentication and database security rules. We will leverage the power of Redux to organize data in the front-end, since Redux attempts to make state mutations predictable by imposing certain restrictions on how and when updates can happen. Towards the end of the book you will have improved your React skills by realizing the potential of Firebase to create real-time serverless web applications.
Table of Contents (16 chapters)
Title Page
Copyright and Credits
Packt Upsell
Contributors
Preface
Free Chapter
1
Getting Started with Firebase and React
Index

Rule definition and structure


Firebase rules provide predefined variables that can be used inside a rule definition:

Name

Definition / Usage

auth

It represents information of the authenticated user. It will be null for an unauthenticated user. It is an object that contains uid, token, and provider fields and corresponding values.

$ variables

It represents wildcard path to refer to the dynamically generated keys and represent IDs.

root

It represents data snapshot at the root path in the Firebase database before applying the given database operation.

data

It represents the Data Snapshot before applying the given database operation. For example, in case of the update or write, the root represents the original data snapshot without the changes in the update or write.

newData

It represents the Data Snapshot before applying the given database operation. However, it includes both the existing data as well as the new data, which includes data manipulated by the given data operation.

now

It represents current...