Book Image

Odoo 11 Development Essentials - Third Edition

By : Daniel Reis
Book Image

Odoo 11 Development Essentials - Third Edition

By: Daniel Reis

Overview of this book

Odoo continues to gain worldwide momentum as the best platform for open source ERP installations. Now, with Odoo 11, you have access to an improved GUI, performance optimization, integrated in-app purchase features, and a fast-growing community to help transform and modernize your business. With this practical guide, you will cover all the new features that Odoo 11 has to offer to build and customize business applications, focusing on the publicly available community edition. We begin with setting up a development environment, and as you make your way through the chapters, you will learn to build feature-rich business applications. With the aim of jump-starting your Odoo proficiency level, from no specific knowledge to application development readiness, you will develop your first Odoo application. We then move on to topics such as models and views, and understand how to use server APIs to add business logic, helping to lay a solid foundation for advanced topics. The book concludes with Odoo interactions and how to use the Odoo API from other programs, all of which will enable you to efficiently integrate applications with other external systems.
Table of Contents (20 chapters)
Title Page
Packt Upsell
Contributors
Preface
Index

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 used for its computation.

In most cases, computed fields involve writing some business logic. So, to take full advantage of this feature we need to learn the topics explained in Chapter 7, Business Logic - Supporting business processes. We can still explain computed fields here, but will keep the business logic as simple as possible.

Let's work on an example. Stages have a fold field. We will add a computed field with the Folded? flag for the corresponding stage to our To-Do tasks.

We should edit the TodoTask model in the todo_task_model.py file to add the following:

# class TodoTask(models.Model):

    stage_fold = fields.Boolean(
        'Stage Folded?',
        compute='_compute_stage_fold')

    @api.depends('stage_id.fold')
    def _compute_stage_fold...