How to recompute stored functional field values in Odoo?

Question

Sometimes stored fields must be recomputed, but triggers can not be launched (e.g. in case of SQL injection).

How to recompute them an easy way?

Answer 1

(Because I came here via google:)

You can also do this from the Odoo Shell:

# python odoo.py shell -c openerp-server.conf  -d 

>>> model = env['account.invoice']
>>> env.add_todo(model._fields['amount_total'], model.search([]))
>>> model.recompute()
>>> env.cr.commit()

Odoo shell is available in 9, 10 and via an OCA module in 8.