Odoo 11 Development Essentials - Third Edition

Extending Python methods

Python methods can also be extended for additional business logic. This is done by borrowing the mechanism Python already provides for inherited objects to extend their parent class behavior: super().

As an example, we will have the TodoTask class extend the ORM write() method to add some logic to it: when writing on a non-active record, it will automatically reactivate it.

Add this additional method in the models/todo_task_model.py file:

@api.multi 
def write(self, values): 
    if 'active' not in values: 
        values['active'] = True 
    super().write(values)

The write() method expects an additional parameter, with a dictionary of values to write on the record. Unless a value is being explicitly set on the active field, we set ...