[FIX] purchase: default currency from context

closes odoo/odoo#116238

X-original-commit: ba6f90c2d664b7cef7f7ecd619b763ad6fe2138b
Signed-off-by: William Henrotin (whe) <whe@odoo.com>

addons/purchase/models/purchase.py

@@ -286,13 +286,14 @@ class PurchaseOrder(models.Model):
         # are taken with the company of the order
         # if not defined, with_company doesn't change anything.
         self = self.with_company(self.company_id)
+        default_currency = self._context.get("default_currency_id")
         if not self.partner_id:
             self.fiscal_position_id = False
-            self.currency_id = self.env.company.currency_id.id
+            self.currency_id = default_currency or self.env.company.currency_id.id
         else:
             self.fiscal_position_id = self.env['account.fiscal.position']._get_fiscal_position(self.partner_id)
             self.payment_term_id = self.partner_id.property_supplier_payment_term_id.id
-            self.currency_id = self.partner_id.property_purchase_currency_id.id or self.env.company.currency_id.id
+            self.currency_id = default_currency or self.partner_id.property_purchase_currency_id.id or self.env.company.currency_id.id
         return {}
 
     @api.onchange('fiscal_position_id', 'company_id')

addons/purchase_requisition/views/purchase_requisition_views.xml

@@ -103,12 +103,15 @@
         <field name="arch" type="xml">
             <form string="Purchase Agreements">
             <field name="company_id" invisible="1"/>
+            <field name="currency_id" invisible="1"/>
             <header>
                 <button name="%(action_purchase_requisition_to_so)d" type="action"
                     string="New Quotation"
+                    context="{'default_currency_id': currency_id}"
                     attrs="{'invisible': [('state', '!=', 'open')]}"/>
                 <button name="%(action_purchase_requisition_to_so)d" type="action"
                     string="New Quotation" class="btn-primary"
+                    context="{'default_currency_id': currency_id}"
                     attrs="{'invisible': [('state', 'not in', ('in_progress', 'ongoing'))]}"/>
                 <button name="action_in_progress" states="draft" string="Confirm" type="object" class="btn-primary"/>
                 <button name="action_open" states="in_progress" string="Validate" type="object" class="btn-primary"/>