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Flask Framework Cookbook

You're reading from   Flask Framework Cookbook Over 80 proven recipes and techniques for Python web development with Flask

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Product type Paperback
Published in Jul 2019
Publisher
ISBN-13 9781789951295
Length 302 pages
Edition 2nd Edition
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Author (1):
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Shalabh Aggarwal Shalabh Aggarwal
Author Profile Icon Shalabh Aggarwal
Shalabh Aggarwal
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Toc

Table of Contents (15) Chapters Close

Preface 1. Flask Configurations 2. Templating with Jinja2 FREE CHAPTER 3. Data Modeling in Flask 4. Working with Views 5. Webforms with WTForms 6. Authenticating in Flask 7. RESTful API Building 8. Admin Interface for Flask Apps 9. Internationalization and Localization 10. Debugging, Error Handling, and Testing 11. Deployment and Post-Deployment 12. Microservices and Containers 13. Other Tips and Tricks 14. Other Books You May Enjoy

Creating a custom macro for forms

Macros allow us to write reusable pieces of HTML blocks. They are analogous to functions in regular programming languages. We can pass arguments to macros as we do to functions in Python, and we can then use them to process an HTML block. Macros can be called any number of times, and the output will vary as per the logic inside them. In this recipe, let's understand how to write a macro in Jinja2.

Getting ready

Macros in Jinja2 are a very common topic and have a lot of use cases. Here, we will just take a look at how a macro can be created and then used after importing it.

How to do it...

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You have been reading a chapter from
Flask Framework Cookbook - Second Edition
Published in: Jul 2019
Publisher:
ISBN-13: 9781789951295
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