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Odoo Development Cookbook

Odoo Development Cookbook

By : Daudi, Vora, Gajjar, Fayolle, Holger Brunn, Daniel Reis
4.2 (12)
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Odoo Development Cookbook

Odoo Development Cookbook

4.2 (12)
By: Daudi, Vora, Gajjar, Fayolle, Holger Brunn, Daniel Reis

Overview of this book

The latest version of the powerful Odoo framework uncovers a wide variety of features for rapid application development. Written by seasoned Odoo experts, this updated Odoo Development Cookbook will help you explore Odoo 17’s new features and use them to develop applications from scratch. You'll learn about website development concepts and get to grips with the Odoo Web Library (OWL), as well as create a new Odoo module from the ground up before progressing to advanced framework concepts. The book also shows you how to modify existing applications, including Point of Sale (POS) applications. Going beyond backend development, you'll discover advanced JavaScript recipes for creating new views and widgets. You'll get a clear understanding of website development and be on your way to becoming a proficient Odoo developer by studying performance optimization, debugging, and automated testing. By the end of this book, you'll have the knowledge you need to build impressive applications and be well-versed in Odoo development best practices.
Table of Contents (28 chapters)
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17
Chapter 17: In-App Purchasing with Odoo

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:
        print(rec.name)

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

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