How to Create Hierarchical View in Odoo 18
Introduction
The Hierarchical view in Odoo 18 is a specialized display format that presents data in a tree-like structure, showing parent-child relationships between records. This view type is particularly useful for displaying organizational structures, category hierarchies, departmental breakdowns, or any data that has a natural hierarchical relationship.
Blog walks you through building a simple Hierarchical view in Odoo 18:
1. Understanding the Hierarchical View
The hierarchical view displays data in a parent–child relationship, with each node representing a record. The view can be draggable for reorganization and is more visual compared to the traditional tree (list) view.
2. Defining the Model
We start by defining our product.category model. This model includes a parent_id field for the parent category and a child_ids field for its subcategories.
3. Creating the Views
Highlights:
- <hierarchy> is the special tag for hierarchy view.
- child_field="child_ids" tells Odoo where to find children records.
- draggable="1" enables drag-and-drop rearranging.
- <templates> define the UI for each node.
4. Adding the Action and Menu
We create an action to open our views and a menu to access it from the UI.
5. Security
Add Category Name and Parent Category.
This screenshot shows Odoo’s Product Category Hierarchy view, where categories like Electronics have subcategories such as Mobile and Speaker. The tree structure expands to display deeper levels, for example Speaker contains brands like JBL, Impex, and Boat.
