[IMP] base: allow configure if src partners are deleted or archived a…

…fter merge

Currently, the source partners used in mergings are deleted, this change
allows to configure if the partners are going to be deleted or archived.

odoo/addons/base/wizard/base_partner_merge.py

@@ -12,7 +12,7 @@
 from odoo import api, fields, models, Command
 from odoo import SUPERUSER_ID, _
 from odoo.exceptions import ValidationError, UserError
-from odoo.tools import mute_logger
+from odoo.tools import mute_logger, str2bool
 
 _logger = logging.getLogger('odoo.addons.base.partner.merge')
 
@@ -320,8 +320,12 @@ def _merge(self, partner_ids, dst_partner=None, extra_checks=True):
 
         self._log_merge_operation(src_partners, dst_partner)
 
-        # delete source partner, since they are merged
-        src_partners.unlink()
+        # check parameter to see if it should delete or archive
+        delete_src_partners = str2bool(self.env["ir.config_parameter"].sudo().get_param("base.delete_merged_src_partners", True))
+        if delete_src_partners:
+            src_partners.unlink()
+        else:
+            src_partners.write({src_partners._active_name: False})
 
     def _log_merge_operation(self, src_partners, dst_partner):
         _logger.info('(uid = %s) merged the partners %r with %s', self._uid, src_partners.ids, dst_partner.id)