[FIX] select company in multicompany

account_tax_balance/models/account_tax.py

@@ -26,10 +26,11 @@ class AccountTax(models.Model):
 
     def get_context_values(self):
         context = self.env.context
+        actual_company_id = context.get("company_id", self.env.company.id)
         return (
             context.get("from_date", fields.Date.context_today(self)),
             context.get("to_date", fields.Date.context_today(self)),
-            context.get("company_ids", [self.env.user.company_id.id]),
+            context.get("company_ids", [actual_company_id]),
             context.get("target_move", "posted"),
         )
 

account_tax_balance/wizard/open_tax_balances.py

@@ -8,8 +8,12 @@ class WizardOpenTaxBalances(models.TransientModel):
     _name = "wizard.open.tax.balances"
     _description = "Wizard Open Tax Balances"
 
-    company_id = fields.Many2one(
-        "res.company", required=True, default=lambda self: self.env.user.company_id
+    company_ids = fields.Many2many(
+        comodel_name="res.company",
+        string="Companies",
+        required=True,
+        domain=lambda self: [("id", "in", self.env.companies.ids)],
+        default=lambda self: self.env.companies.ids,
     )
     from_date = fields.Date(
         required=True, store=True, readonly=False, compute="_compute_date_range"
@@ -63,17 +67,17 @@ class WizardOpenTaxBalances(models.TransientModel):
             "target": _(self.target_move),
             "from": self.from_date.strftime(date_format),
             "to": self.to_date.strftime(date_format),
-            "company": self.company_id.name,
         }
         # name of action which is displayed in breacrumb
         vals["name"] = _("%(name)s: %(target)s from %(from)s to %(to)s") % infos
         multi_cpny_grp = self.env.ref("base.group_multi_company")
         if multi_cpny_grp in self.env.user.groups_id:
-            vals["name"] = "{} ({})".format(vals["name"], self.company_id.name)
+            company_names = self.company_ids.mapped("name")
+            vals["name"] = "{} ({})".format(vals["name"], ", ".join(company_names))
         vals["context"] = {
             "from_date": self.from_date,
             "to_date": self.to_date,
             "target_move": self.target_move,
-            "company_id": self.company_id.id,
+            "company_ids": self.company_ids.ids,
         }
         return vals

account_tax_balance/wizard/open_tax_balances_view.xml

@@ -8,7 +8,7 @@
     <field name="arch" type="xml">
         <form string="Taxes Balance">
             <group>
-                <field name="company_id"/>
+                <field name="company_ids" widget="many2many_tags" groups="base.group_multi_company"/>
                 <field name="date_range_id"/>
                 <field name="from_date"></field>
                 <field name="to_date"></field>