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  • Book Overview & Buying Odoo Development Cookbook
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Odoo Development Cookbook

Odoo Development Cookbook

By : Holger Brunn, Alexandre Fayolle, Daniel Reis
4.6 (5)
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Odoo Development Cookbook

Odoo Development Cookbook

4.6 (5)
By: Holger Brunn, Alexandre Fayolle, Daniel Reis

Overview of this book

Odoo is a full-featured open source ERP with a focus on extensibility. The flexibility and sustainability of open source is also a key selling point of Odoo. It is built on a powerful framework for rapid application development, both for back-end applications and front-end websites. The book starts by covering Odoo installation and administration, and provides a gentle introduction to application development. It then dives deep into several of the areas that an experienced developer will need to use. You’ll learn implement business logic, adapt the UI, and extend existing features.
Table of Contents (18 chapters)
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17
Index

Adding a hierarchy to a Model


Hierarchies are represented using model relations with itself; each record has a parent record in the same model and also has many child records. This can be achieved by simply using many-to-one relations between the model and itself.

But Odoo also provides improved support for this type of field using the Nested set model (https://en.wikipedia.org/wiki/Nested_set_model). When activated, queries using the child_of operator in their domain filters will run significantly faster.

Staying with the Library Books example, we will build a hierarchical category tree that could be used to categorize books.

Getting ready

We will reuse the my_module addon module from Chapter 3, Creating Odoo Modules.

How to do it…

We will add a new Python file, models/library_book_categ.py, for the category tree, shown as follows:

  1. To have the new Python code file loaded, add this line to models/__init__.py:

    from . import library_book_categ
  2. To create the Book Category model with the parent and child...

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