book

Flask Framework Cookbook - Third Edition

by Shalabh Aggarwal

July 2023

Intermediate to advanced

318 pages

6h 29m

English

Packt Publishing

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Third EditionContributorsAbout the authorAbout the reviewers
Who this book is forWhat this book coversTo get the most out of this bookDownload the example code filesDownload the color imagesConventions usedGet in touchShare Your ThoughtsDownload a free PDF copy of this book
Technical requirementsSetting up a virtual environmentHow to do it...How it works...There’s more...See alsoHandling basic configurationsGetting readyHow to do it...How it works...Configuring using class-based settingsHow to do it...How it works...Organizing static filesHow to do it...How it works...There’s more...Being deployment-specific with the instance folderHow to do it...How it works...Composition of views and modelsHow to do it...How it works...See alsoCreating a modular web app with blueprintsGetting readyHow to do it...How it works...Making a Flask app installable using setuptoolsHow to do it...How it works...See also
Technical requirementsBootstrapping the standard layoutGetting readyHow to do it...How it works...Getting readyHow to do it...How it works...Creating a custom context processorHow to do it...Creating a custom Jinja filterHow to do it...How it works...See alsoCreating a custom macro for formsGetting readyHow to do it...Advanced date and time formattingGetting readyHow to do it...How it works…There’s more…
Creating an SQLAlchemy DB instanceGetting readyHow to do it...There’s more…See alsoCreating a basic product modelHow to do it…How it works...Creating a relational category modelHow to do it...How it works…See alsoMigrating databases using Alembic and Flask-MigrateGetting readyHow to do it...How it works...See alsoIndexing model data with RedisGetting readyHow to do it...How it works...Opting for the NoSQL way with MongoDBGetting readyHow to do it...How it works…See also
Writing function-based views and URL routesGetting readyHow to do it...How it works...There’s more...Writing class-based viewsGetting readyHow to do it...How it works...There’s more...See alsoImplementing URL routing and product-based paginationGetting readyHow to do it...See alsoRendering to templatesGetting readyHow to do it...How it works...See alsoDealing with XHR requestsGetting readyHow to do it...How it works...Using decorators to handle requests beautifullyGetting readyHow to do it...See alsoCreating custom 4xx and 5xx error handlersGetting readyHow to do it...How it works...There’s more...Flashing messages for better user feedbackGetting readyHow to do it...How it works...Implementing SQL-based searchingGetting readyHow to do it...How it works...
Representing SQLAlchemy model data as a formGetting readyHow to do it...How it works...See alsoValidating fields on the server sideHow to do it...How it works...See alsoCreating a common form setHow to do it...How it works...Creating custom fields and validationsHow to do it...How it works...There’s more...Creating a custom widgetHow to do it...How it works...See alsoUploading files via formsHow to do it...How it works...Protecting applications from CSRFHow to do it...How it works...
Creating a simple session-based authenticationGetting readyHow to do it...How it works...See alsoAuthenticating using the Flask-Login extensionGetting readyHow to do it...How it works…There’s more…See alsoUsing Facebook for authenticationGetting readyHow to do it...How it works…Using Google for authenticationGetting readyHow to do it…How it works…Using Twitter for authenticationGetting readyHow to do it...How it works…Authenticating with LDAPGetting readyHow to do it...How it works…See also

Creating a class-based REST interfaceGetting readyHow to do it...How it works...Creating an extension-based REST interfaceGetting readyHow to do it…How it works…See alsoCreating a complete RESTful APIGetting readyHow to do it…How it works…
Creating a simple CRUD interfaceGetting readyHow to do it...How it works...Using the Flask-Admin extensionGetting readyHow to do it…How it works…There’s more…Registering models with Flask-AdminGetting readyHow to do it…How it works…Creating custom forms and actionsGetting readyHow to do it…How it works…Using a WYSIWYG editor for textarea integrationGetting readyHow to do it…How it works…See alsoCreating user rolesGetting readyHow to do it…How it works…
Adding a new languageGetting readyHow to do it...How it works...There’s more…See alsoImplementing lazy evaluation and the gettext/ngettext functionsGetting readyHow to do it…How it works…Implementing the global language-switching actionGetting readyHow to do it…How it works…There’s more…
Setting up basic file loggingGetting readyHow to do it...How it works...There’s more…See alsoSending emails on the occurrence of errorsGetting readyHow to do it…How it works…Using Sentry to monitor exceptionsGetting readyHow to do it…How it works…Debugging with pdbGetting readyHow to do it…How it works…See alsoCreating application factoriesGetting readyHow to do it…How it works…See alsoCreating the first simple testGetting readyHow to do it…How it works…See alsoWriting more tests for views and logicGetting readyHow to do it…How it works…See alsoIntegrating the nose2 libraryGetting readyHow to do it…See alsoUsing mocking to avoid external API accessGetting readyHow to do it…How it works…See alsoDetermining test coverageGetting readyHow to do it…How it works…See alsoUsing profiling to find bottlenecksGetting readyHow to do it…How it works…
Deploying with ApacheGetting readyHow to do it…How it works…See alsoDeploying with uWSGI and NginxGetting readyHow to do it…See alsoDeploying with Gunicorn and SupervisorGetting readyHow to do it…How it works…See alsoDeploying with TornadoGetting readyHow to do it…How it works…Using S3 storage for file uploadsGetting readyHow to do it…How it works…Managing and monitoring application performance with New RelicGetting readyHow to do it…How it works…See alsoInfrastructure and application monitoring with DatadogGetting readyHow to do it…See also
Containerization with DockerGetting readyHow to do it…How it works…See alsoOrchestrating containers with KubernetesGetting readyHow to do it…How it works…There’s more…See alsoGoing serverless with Google Cloud RunGetting readyHow to do it…How it works…See alsoContinuous deployment with GitHub ActionsGetting readyHow to do it…How it works…See also
Technical requirementsAutomating text completion using GPTGetting readyHow to do it…How it works…See alsoImplementing chat using GPT (ChatGPT)Getting readyHow to do it…How it works…See alsoGenerating images using GPTGetting readyHow to do it…How it works…See also
Implementing full-text search with ElasticsearchGetting readyHow to do it…How it works…See alsoWorking with signalsGetting readyHow to do it…How it works…See alsoUsing caching with your applicationGetting readyHow to do it…How it works…There’s more…See alsoImplementing email supportGetting readyHow to do it…How it works…There’s more…See alsoUnderstanding asynchronous operationsGetting readyHow to do it…How it works…See alsoWorking with CeleryGetting readyHow to do it…How it works…See also
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Overview

Dive deeper into Flask with the "Flask Framework Cookbook" by Shalabh Aggarwal. This guide brings you hands-on solutions and advanced techniques to create dynamic, responsive, and scalable web applications in Python using the Flask framework. Whether you're debugging, working with databases, or deploying with Docker, this book equips you to master Flask's potential.

What this Book will help me do

Utilize advanced Flask templating techniques to build dynamic webpages.
Effectively handle errors and implement comprehensive logging for robust application debugging.
Integrate Flask applications with a variety of backend technologies, including databases like Redis and platforms like Docker for deployment.
Implement modern web development techniques, including microservices architecture and CI/CD pipelines.
Combine Flask with cutting-edge technologies like GPT for creating AI-enhanced applications.

Author(s)

Shalabh Aggarwal is an experienced author and software developer specializing in Python-based web development and scaling. With years of professional experience, Shalabh brings practical insights and expert knowledge into Flask development, focusing on real-world application and scalability.

Who is it for?

The ideal readers of the "Flask Framework Cookbook" are web developers familiar with basic Python and web development concepts, who are looking to deepen their knowledge of Flask. If you're seeking to build scalable, production-ready Flask applications or to enhance your understanding by integrating advanced techniques like GPT and CI/CD, this book is for you.