Book Image

Odoo 14 Development Cookbook - Fourth Edition

By : Parth Gajjar, Alexandre Fayolle, Holger Brunn, Daniel Reis
5 (2)
Book Image

Odoo 14 Development Cookbook - Fourth Edition

5 (2)
By: Parth Gajjar, Alexandre Fayolle, Holger Brunn, Daniel Reis

Overview of this book

With its latest iteration, the powerful Odoo framework released a wide variety of features for rapid application development. This updated Odoo development cookbook will help you explore the new features in Odoo 14 and learn how to use them to develop Odoo applications from scratch. You'll learn about the new website concepts in Odoo 14 and get a glimpse of Odoo's new web-client framework, the Odoo Web Library (OWL). Once you've completed the installation, you'll begin to explore the Odoo framework with real-world examples. You'll then create a new Odoo module from the ground up and progress to advanced framework concepts. You'll also learn how to modify existing applications, including Point of Sale (POS) applications. This book isn't just limited to backend development; you'll discover advanced JavaScript recipes for creating new views and widgets. As you progress, you'll learn about website development and become a quality Odoo developer by studying performance optimization, debugging, and automated testing. Finally, you'll delve into advanced concepts such as multi-website, In-App Purchasing (IAP),, the IoT Box, and security. By the end of the book, you'll have all the knowledge you need to build impressive Odoo applications and you'll be well versed in development best practices that will come in handy when working with the Odoo framework.
Table of Contents (26 chapters)

The prefetching pattern for recordsets

When you access data from a recordset, it makes a query in the database. If you have a recordset with multiple records, fetching records on it can make a system slow because of the multiple SQL queries. In this recipe, we will explore how you can use the prefetching pattern to solve this issue. By following the prefetching pattern, you can reduce the number of queries needed, which will improve performance and make your system faster.

How to do it…

Take a look at the following code; it is a normal compute method. In this method, self is a recordset of multiple records. When you iterate directly on the recordset, prefetching works perfectly:

# Correct prefetching
def compute_method(self):
    for rec in self:

But in some cases, prefetching becomes more complex, such as when fetching data with the browse method. In the following example, we browse...