Book Image

Odoo 15 Development Essentials - Fifth Edition

By : Daniel Reis
4.5 (2)
Book Image

Odoo 15 Development Essentials - Fifth Edition

4.5 (2)
By: Daniel Reis

Overview of this book

Odoo is fast becoming the reference open source platform for business applications thanks to the fact that it provides the infrastructure needed for developers to deliver software solutions for any business process quickly. Odoo's layered module approach makes it particularly effective for combining and extending features. This updated fifth edition is a tutorial-style introduction to essential Odoo development topics. The book starts by covering the development essentials for building business applications and takes you through Odoo installation and configuration, gradually transitioning from having no specific knowledge of Odoo to being ready for application development. You'll then learn how to develop your first Odoo application, while covering topics such as models and views. Later chapters will get you up to speed with using server APIs to add business logic, helping you lay a solid foundation for advanced topics. As you progress, you’ll get equipped to build and customize your applications and explore the new features available in Odoo 12 and beyond, such as in-memory ORM and computed writable fields. Finally, you’ll gain insights into building business logic and using the Odoo API to integrate with various applications. By the end of this book, you’ll be able to build business apps from scratch using the latest version of Odoo.
Table of Contents (22 chapters)
1
Section 1: Introduction to Odoo Development
6
Section 2: Models
9
Section 3: Business Logic
13
Section 4: Views
18
Section 5: Deployment and Maintenance

Computed fields

Fields can have their values automatically calculated by a function, instead of simply reading a database stored value. A computed field is declared just like a regular field but has the additional compute argument to define the function that's used for the computation.

Computed fields involve writing some business logic. So, to take full advantage of this feature, we should be comfortable with the topics that will be explained in Chapter 8, Business Logic – Supporting Business Processes. Computed fields will still be explained here, but we will keep the business logic as simple as possible.

As an example, we will add a computed field to the Books model, displaying the publisher's country. This will allow the country to be displayed in the form view.

The code that's needed to find the value is simple: if book represents a book record, we can use object dot notation to get the publisher's country using book.publisher_id.country_id...