Scene Description:
Project requirements, often required when a field at a particular state when triggered to perform a particular method; or create a record of the time, while doing another operation; how to achieve similar needs?
Method to realize:
odoo provides several trigger modes:
1. Field level - the front trigger: @ api.onchange decorator --- equivalent to update changing operation when the trigger
2. field level - the rear end of the trigger: @ api.depends decorator --- equivalent to update changing operation when the trigger
3. The model / table level - create method inherited extension
4. The model / table level - extend the write method of inheritance --- equivalent update
Supplementary example:
To be added