Book Image

Mastering Flask

By : Jack Stouffer
Book Image

Mastering Flask

By: Jack Stouffer

Overview of this book

Starting from a simple Flask app, this book will walk through advanced topics while providing practical examples of the lessons learned. After building a simple Flask app, a proper app structure is demonstrated by transforming the app to use a Model-View-Controller (MVC) architecture. With a scalable structure in hand, the next chapters use Flask extensions to provide extra functionality to the app, including user login and registration, NoSQL querying, a REST API, an admin interface, and more. Next, you’ll discover how to use unit testing to take the guesswork away from making sure the code is performing as it should. The book closes with a discussion of the different platforms that are available to deploy a Flask app on, the pros and cons of each one, and how to deploy on each one.
Table of Contents (20 chapters)
Mastering Flask
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

Flask WTForms


Adding forms in your application seems to be an easy task, but when you start coding the server-side code, the task of validating user input grows bigger and bigger as the form becomes more complex. Security is paramount as the data is from an untrustworthy source and is going to be entered in the database. WTForms is a library that handles server form validation for you by checking input against common form types. Flask WTForms is a Flask extension on top of WTForms that add features, such as Jinja HTML rendering, and protects you against attacks, such as SQL injection and cross-site request forgery. To install Flask WTForms and WTForms, we have:

$ pip install Flask-WTF

Note

Protecting yourself against SQL injection and cross-site request forgery is extremely important, as these are the most common forms of attacks your website will receive. To learn more about these attacks, visit https://en.wikipedia.org/wiki/SQL_injection and https://en.wikipedia.org/wiki/Cross-site_request_forgery...