A new field on tax groups makes it now possible for this group to be displayed under a subtotal label. If not set, this defaults instead to "Untaxed Amount", keeping the traditional behavior. This is intended for withholding taxes, which can now be implemented with negative taxes and a tax group with this field set.
To do that, this commit entirely refactors the way amount_by_group worked, and replaces it with a more complete json field called tax_totals_json. It also streamlines the way taxe totals are displayed on invoices, PO and SO and makes it so that a common code is called instead of copy-pasting the same block 3 times as before.
[IMP] purchase: always display tax totals by groups on purchases orders
Before, tax totals on purchase.order's form were not shown by group, and were instead all aggregated in a single "Taxes" category. The same went for the pdf export. The portal view, though, did show the totals by group. We now display the tax groups in the same way all the time.
closesodoo/odoo#74138
Task: 2457374
Related: odoo/enterprise#19802
Related: odoo/upgrade#2670
Signed-off-by: Quentin De Paoli (qdp) <qdp@openerp.com>
oco-odoo
d9a3b938fe