on_change of fields#
Tryton allows developers to define methods that can be called once a field’s value has been changed by the user. The instance method has the following name:
An instance of
Model is created by using the values
from the client’s fields specified by the
on_change list defined on the field.
Any change made on the instance will be pushed back to the client-side record.
There is also a way to define a method that must update the value of a field
whenever any field from a predefined list is modified.
This list is defined by the
attribute of the field.
The method that will be called has the following name:
Just like for the classic
on_change, an instance of
Model is created by using the values from the client’s
fields specified by the
The returned value of the method is pushed back to the client-side record as
the new value of the field.