what is difference between def write and def _write in odoo v12 community .

Question

I can find there are 3 instances where in code of odoo v 12 community
instead of overriding write orm method _write is overriden .
1) account module -> account_invoice.py
2) base_automation module -> base_automation.py
3) sale module -> sale.py
so my question is what is difference between def write and def _write
and when to use def _write instead def write ??
Regards.

Nikul Chaudhary · Accepted Answer

Hello
*def write*:
Updates all records values with the provided values.
​
*def _write*:
low-level implementation of write and normally it gets called from write.
this method check constraints on records.

Chirag patel · Answer

_write : when compute field changed its value it called _write method.
write: Update records with given ids with the given field values

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