Odoo Development Cookbook

Using Delegation inheritance to copy features to another Model

Traditional inheritance using _inherit performs in-place modification to extend the model's features.

But there are cases where rather than modifying an existing model, we want to create a new model based on an existing one to leverage the features it already has. This is one with Odoo's delegation inheritance that uses the model attribute, _inherits (note the additional s).

Traditional inheritance is quite different than the concept in object-oriented programming. Delegation inheritance in turn is similar in that a new model can be created to include the features from a parent model. It also supports polymorphic inheritance, where we inherit from two or more other models.

We have a library ...