Until now, stored compute fields were computed after database insertion.
This meant that required fields should not be computed, for instance,
unless some hackish code was added to make it work. Another trick was
to provide some default value, but this actually prevents the field for
being computed after insertion.
This commit provides a field parameter to specify that the field should
be precomputed: adding precompute=True on the field definition force the
method create() to compute its value before inserting the new record in
the database. For the reason explained below, precomputing fields is
not always correct, and therefore the default remains to not precompute
a field.
Some stored fields must be computed after insertion, for instance:
* statistics fields computed with search/read_group/...
* fields referencing the current record (res.partner.commercial_partner_id)
* fields referencing another record that does not exist yet (think about
records created by one2many fields)
* fields depending on the create_date/write_date/create_uid/write_uid
Those fields shouldn't be defined with precompute=True, which triggers
their computation post record creation. This is why, by safety, we
consider the default behavior to be precompute=False.
closesodoo/odoo#80449
Signed-off-by: Raphael Collet (rco) <rco@openerp.com>
Co-authored-by: Raphael Collet <rco@odoo.com>
Co-authored-by: Yannick Tivisse <yti@odoo.com>
