[FIX] purchase_requisition: incorrect field

Before the fix we were requiring for product.supplierinfo.requisition_id
which is a non existing field of the model 'product.supplierinfo'. I
just change it then to purchase_requisition_id which is the required
field.

This triggered an error when you add a product selled by the defined
vendor for an aggreement type defined as 'Blanket order'.

opw-1914712

closes odoo/odoo#29342

2 files changed, 47 insertions, 1 deletions

diff --git a/addons/purchase_requisition/models/purchase_requisition.py b/addons/purchase_requisition/models/purchase_requisition.py
index 13e2ae20dc6..250b79d5bdc 100644
--- a/addons/purchase_requisition/models/purchase_requisition.py
+++ b/addons/purchase_requisition/models/purchase_requisition.py
@@ -214,7 +214,7 @@ class PurchaseRequisitionLine(models.Model):
                 ('product_id', '=', vals.get('product_id')),
                 ('name', '=', res.requisition_id.vendor_id.id),
             ])
-            if not [s.requisition_id for s in supplier_infos]:
+            if not any([s.purchase_requisition_id for s in supplier_infos]):
                 res.create_supplier_info()
             if vals['price_unit'] <= 0.0:
                 raise UserError(_('You cannot confirm the blanket order without price.'))
diff --git a/addons/purchase_requisition/tests/test_purchase_requisition.py b/addons/purchase_requisition/tests/test_purchase_requisition.py
index b88a4af5cc9..453fd83bdc6 100644
--- a/addons/purchase_requisition/tests/test_purchase_requisition.py
+++ b/addons/purchase_requisition/tests/test_purchase_requisition.py
@@ -295,3 +295,49 @@ class TestPurchaseRequisition(common.TransactionCase):
         ])
         order_line._onchange_quantity()
         self.assertEqual(order_line.price_unit, 50, 'The supplier info chosen should be the one without requisition id')
+
+    def test_06_purchase_requisition(self):
+        """ Create a blanquet order for a product and a vendor already linked via
+        a supplier info"""
+        product = self.env['product.product'].create({
+            'name': 'test6',
+        })
+        product2 = self.env['product.product'].create({
+            'name': 'test6',
+        })
+        vendor = self.env['res.partner'].create({
+            'name': 'vendor6',
+        })
+        supplier_info = self.env['product.supplierinfo'].create({
+            'product_id': product.id,
+            'name': vendor.id,
+        })
+
+        # create a empty blanquet order
+        requisition_type = self.env['purchase.requisition.type'].create({
+            'name': 'Blanket test',
+            'quantity_copy': 'none'
+        })
+        line1 = (0, 0, {
+            'product_id': product2.id,
+            'product_uom_id': product2.uom_po_id.id,
+            'price_unit': 41,
+            'product_qty': 10,
+        })
+        requisition_blanket = self.env['purchase.requisition'].create({
+            'line_ids': [line1],
+            'type_id': requisition_type.id,
+            'vendor_id': vendor.id,
+        })
+        requisition_blanket.action_in_progress()
+        self.env['purchase.requisition.line'].create({
+            'product_id': product.id,
+            'product_qty': 14.0,
+            'requisition_id': requisition_blanket.id,
+            'price_unit': 10,
+        })
+        new_si = self.env['product.supplierinfo'].search([
+            ('product_id', '=', product.id),
+            ('name', '=', vendor.id)
+        ]) - supplier_info
+        self.assertEqual(new_si.purchase_requisition_id, requisition_blanket, 'the blanket order is not linked to the supplier info')