Book Image

Hands-On RESTful Python Web Services - Second Edition

By : Gaston C. Hillar
1 (1)
Book Image

Hands-On RESTful Python Web Services - Second Edition

1 (1)
By: Gaston C. Hillar

Overview of this book

Python is the language of choice for millions of developers worldwide that builds great web services in RESTful architecture. This second edition of Hands-On RESTful Python Web Services will cover the best tools you can use to build engaging web services. This book shows you how to develop RESTful APIs using the most popular Python frameworks and all the necessary stacks with Python, combined with related libraries and tools. You’ll learn to incorporate all new features of Python 3.7, Flask 1.0.2, Django 2.1, Tornado 5.1, and also a new framework, Pyramid. As you advance through the chapters, you will get to grips with each of these frameworks to build various web services, and be shown use cases and best practices covering when to use a particular framework. You’ll then successfully develop RESTful APIs with all frameworks and understand how each framework processes HTTP requests and routes URLs. You’ll also discover best practices for validation, serialization, and deserialization. In the concluding chapters, you will take advantage of specific features available in certain frameworks such as integrated ORMs, built-in authorization and authentication, and work with asynchronous code. At the end of each framework, you will write tests for RESTful APIs and improve code coverage. By the end of the book, you will have gained a deep understanding of the stacks needed to build RESTful web services.
Table of Contents (19 chapters)
Title Page
Dedication
About Packt
Contributors
Preface
Index

Using model serializers to eliminate duplicate code


The GameSerializer class we coded in Chapter 5, Developing RESTful APIs with Django 2.1, declares many attributes with the same names that we used in the Game model and repeats information such as the field types and the max_length values. The GameSerializer class is a subclass of the rest_framework.serializers.Serializer superclass and it declares attributes that we manually mapped to the appropriate types, and overrides the create and update methods.

Now we will create a new version of the GameSerializer class that will inherit from the rest_framework.serializers.ModelSerializer superclass. The ModelSerializer class automatically populates both a set of default fields and a set of default validators. In addition, the class provides default implementations for the create and update methods. Hence, this new version of the GameSerializer class will have less code than the previous version and will be easier to maintain.

Note

If you have any...