[14.0] l10n_it_reverse_charge in multi currency: use the supplier invoice date

l10n_it_reverse_charge/models/__init__.py

@@ -3,4 +3,4 @@
 # Copyright 2017 Lorenzo Battistini - Agile Business Group
 # Copyright 2017 Marco Calcagni - Dinamiche Aziendali srl
 
-from . import account_fiscal_position, account_move, account_rc_type
+from . import account_fiscal_position, account_move, account_rc_type, res_currency

l10n_it_reverse_charge/models/account_move.py

@@ -413,11 +413,25 @@ def generate_self_invoice(self):
                 for line in rc_invoice.line_ids:
                     line.remove_move_reconcile()
                 rc_invoice.invoice_line_ids.unlink()
-                rc_invoice.write(inv_vals)
+                rc_invoice.with_context(
+                    force_conversion_date=self.rc_original_purchase_invoice_ids[
+                        0
+                    ].invoice_date
+                    if self.rc_original_purchase_invoice_ids
+                    else self.rc_purchase_invoice_id.invoice_date,
+                ).write(inv_vals)
             else:
-                rc_invoice = self.create(inv_vals)
+                rc_invoice = self.with_context(
+                    force_conversion_date=self.rc_original_purchase_invoice_ids[
+                        0
+                    ].invoice_date
+                    if self.rc_original_purchase_invoice_ids
+                    else self.rc_purchase_invoice_id.invoice_date,
+                ).create(inv_vals)
                 self.rc_self_invoice_id = rc_invoice.id
-            rc_invoice.action_post()
+            rc_invoice.with_context(
+                force_conversion_date=self.invoice_date,
+            ).action_post()
 
             if self.amount_total:
                 # No need to reconcile invoices with total = 0
@@ -468,10 +482,14 @@ def generate_supplier_self_invoice(self):
             if inv_line.account_id:
                 line_vals["account_id"] = rc_type.transitory_account_id.id
             invoice_line_vals.append((0, 0, line_vals))
-        supplier_invoice.write({"invoice_line_ids": invoice_line_vals})
+        supplier_invoice.with_context(
+            force_conversion_date=self.invoice_date,
+        ).write({"invoice_line_ids": invoice_line_vals})
         self.rc_self_purchase_invoice_id = supplier_invoice.id
 
-        supplier_invoice.action_post()
+        supplier_invoice.with_context(
+            force_conversion_date=self.invoice_date,
+        ).action_post()
         supplier_invoice.fiscal_position_id = self.fiscal_position_id.id
 
     def action_post(self):

l10n_it_reverse_charge/models/res_currency.py

@@ -0,0 +1,19 @@
+from odoo import models
+
+
+class ResCurrency(models.BaseModel):
+    _inherit = "res.currency"
+
+    def _convert(self, from_amount, to_currency, company, date, round=True):
+        if self.env.context.get("force_conversion_date"):
+            return super(ResCurrency, self)._convert(
+                from_amount,
+                to_currency,
+                company,
+                date=self.env.context["force_conversion_date"],
+                round=round,
+            )
+
+        return super(ResCurrency, self)._convert(
+            from_amount, to_currency, company, date, round
+        )