[FIX] purchase: Supplier currency in Vendor bill

Steps to reproduce the bug:

- Let's consider a vendor V with a supplier currency €
- Let's consider the current company's user C in $
- Let's consider two vendor bills journals J1 in € and J2 in $ from C
- Create a vendor bill for V

Bug:

The default currency was $ instead of € and the default journal was J2 instead
of J1. This fix keeps the same behavior as implemented in 82794c8662

opw:2226115

closes odoo/odoo#48857

X-original-commit: 801182f6222521c2961560b3b67743a143a22eff
Signed-off-by: Simon Goffin (sig) <sig@openerp.com>

addons/purchase/models/account_invoice.py

@@ -67,6 +67,27 @@ class AccountMove(models.Model):
         self._onchange_currency()
         self.invoice_partner_bank_id = self.bank_partner_id.bank_ids and self.bank_partner_id.bank_ids[0]
 
+    @api.onchange('partner_id', 'company_id')
+    def _onchange_partner_id(self):
+        res = super(AccountMove, self)._onchange_partner_id()
+        if not self.env.context.get('default_journal_id') and self.partner_id and\
+                self.move_type in ['in_invoice', 'in_refund'] and\
+                self.currency_id != self.partner_id.property_purchase_currency_id and\
+                self.partner_id.property_purchase_currency_id.id:
+            journal_domain = [
+                ('type', '=', 'purchase'),
+                ('company_id', '=', self.company_id.id),
+                ('currency_id', '=', self.partner_id.property_purchase_currency_id.id),
+            ]
+            default_journal_id = self.env['account.journal'].search(journal_domain, limit=1)
+            if default_journal_id:
+                self.journal_id = default_journal_id
+            if self.env.context.get('default_currency_id'):
+                self.currency_id = self.env.context['default_currency_id']
+            if self.partner_id.property_purchase_currency_id:
+                self.currency_id = self.partner_id.property_purchase_currency_id
+        return res
+
     @api.model_create_multi
     def create(self, vals_list):
         # OVERRIDE