Book Image

Building RESTful Python Web Services

By : Gaston C. Hillar
Book Image

Building RESTful Python Web Services

By: Gaston C. Hillar

Overview of this book

Python is the language of choice for millions of developers worldwide, due to its gentle learning curve as well as its vast applications in day-to-day programming. It serves the purpose of building great web services in the RESTful architecture. This book will show you the best tools you can use to build your own web services. Learn how to develop RESTful APIs using the popular Python frameworks and all the necessary stacks with Python, Django, Flask, and Tornado, combined with related libraries and tools. We will dive deep into each of these frameworks to build various web services, and will provide use cases and best practices on when to use a particular framework to get the best results. We will show you everything required to successfully develop RESTful APIs with the four frameworks such as request handling, URL mapping, serialization, validation, authentication, authorization, versioning, ORMs, databases, custom code for models and views, and asynchronous callbacks. At the end of each framework, we will add authentication and security to the RESTful APIs and prepare tests for it. By the end of the book, you will have a deep understanding of the stacks needed to build RESTful web services.
Table of Contents (18 chapters)
Building RESTful Python Web Services
Credits
About the Author
Acknowledgments
About the Reviewer
www.PacktPub.com
Preface

Adding authentication to resources


We will configure the Flask-HTTPAuth extension to work with our User model to verify passwords and set the authenticated user associated with a request. We will declare a custom function that this extension will use as a callback to verify a password. We will create a new base class for our resources that will require authentication. Open the api/views.py file and add the following code after the last line that uses the import statement and before the lines that declares the Blueprint instance . The code file for the sample is included in the restful_python_chapter_07_02 folder:

from flask_httpauth import HTTPBasicAuth 
from flask import g 
from models import User, UserSchema 
 
 
auth = HTTPBasicAuth() 
 
 
@auth.verify_password 
def verify_user_password(name, password): 
    user = User.query.filter_by(name=name).first() 
    if not user or not user.verify_password(password): 
        return False 
    g.user = user 
    return True 
 
 
class AuthRequiredResource...