feat: allowing rate modification in update item in quotation (backport #53147) (#53150)

Co-authored-by: Nishka Gosalia <nishkagosalia@Nishkas-MacBook-Air.local>

erpnext/buying/doctype/supplier_quotation/test_supplier_quotation.py

@@ -37,7 +37,7 @@ class TestPurchaseOrder(FrappeTestCase):
 		self.assertEqual(sq.get("items")[0].qty, 5)
 		self.assertEqual(sq.get("items")[1].rate, 300)
 
-	def test_update_supplier_quotation_child_rate_disallow(self):
+	def test_update_supplier_quotation_child_rate(self):
 		sq = frappe.copy_doc(test_records[0])
 		sq.submit()
 		trans_item = json.dumps(
@@ -50,6 +50,22 @@ class TestPurchaseOrder(FrappeTestCase):
 				},
 			]
 		)
+		update_child_qty_rate("Supplier Quotation", trans_item, sq.name)
+		sq.reload()
+		self.assertEqual(sq.get("items")[0].rate, 300)
+		po = make_purchase_order(sq.name)
+		po.schedule_date = add_days(today(), 1)
+		po.submit()
+		trans_item = json.dumps(
+			[
+				{
+					"item_code": sq.items[0].item_code,
+					"rate": 20,
+					"qty": sq.items[0].qty,
+					"docname": sq.items[0].name,
+				},
+			]
+		)
 		self.assertRaises(
 			frappe.ValidationError, update_child_qty_rate, "Supplier Quotation", trans_item, sq.name
 		)

erpnext/controllers/accounts_controller.py

@@ -3838,20 +3838,28 @@ def update_child_qty_rate(parent_doctype, trans_items, parent_doctype_name, chil
 			return frappe.db.get_single_value("Buying Settings", "allow_zero_qty_in_purchase_order") or False
 		return False
 
-	def validate_quantity(child_item, new_data):
+	def validate_quantity_and_rate(child_item, new_data):
 		if not flt(new_data.get("qty")) and not is_allowed_zero_qty():
 			frappe.throw(
-				_("Row #{0}: Quantity for Item {1} cannot be zero.").format(
+				_("Row #{0}:Quantity for Item {1} cannot be zero.").format(
 					new_data.get("idx"), frappe.bold(new_data.get("item_code"))
 				),
 				title=_("Invalid Qty"),
 			)
 
-		if parent_doctype == "Sales Order" and flt(new_data.get("qty")) < flt(child_item.delivered_qty):
-			frappe.throw(_("Cannot set quantity less than delivered quantity"))
+		qty_limits = {
+			"Sales Order": ("delivered_qty", _("Cannot set quantity less than delivered quantity")),
+			"Purchase Order": ("received_qty", _("Cannot set quantity less than received quantity")),
+		}
 
-		if parent_doctype == "Purchase Order" and flt(new_data.get("qty")) < flt(child_item.received_qty):
-			frappe.throw(_("Cannot set quantity less than received quantity"))
+		if parent_doctype in qty_limits:
+			qty_field, error_message = qty_limits[parent_doctype]
+			if flt(new_data.get("qty")) < flt(child_item.get(qty_field)):
+				frappe.throw(
+					_("Row #{0}:").format(new_data.get("idx"))
+					+ error_message.format(frappe.bold(new_data.get("item_code"))),
+					title=_("Invalid Qty"),
+				)
 
 		if parent_doctype in ["Quotation", "Supplier Quotation"]:
 			if (parent_doctype == "Quotation" and not ordered_items) or (
@@ -3864,7 +3872,15 @@ def update_child_qty_rate(parent_doctype, trans_items, parent_doctype_name, chil
 				if parent_doctype == "Quotation"
 				else purchased_items.get(child_item.name)
 			)
+
 			if qty_to_check:
+				if not rate_unchanged:
+					frappe.throw(
+						_(
+							"Cannot update rate as item {0} is already ordered or purchased against this quotation"
+						).format(frappe.bold(new_data.get("item_code")))
+					)
+
 				if flt(new_data.get("qty")) < qty_to_check:
 					frappe.throw(_("Cannot reduce quantity than ordered or purchased quantity"))
 
@@ -3980,10 +3996,7 @@ def update_child_qty_rate(parent_doctype, trans_items, parent_doctype_name, chil
 			):
 				continue
 
-		validate_quantity(child_item, d)
-		if parent_doctype in ["Quotation", "Supplier Quotation"]:
-			if not rate_unchanged:
-				frappe.throw(_("Rates cannot be modified for quoted items"))
+		validate_quantity_and_rate(child_item, d)
 
 		if flt(child_item.get("qty")) != flt(d.get("qty")):
 			any_qty_changed = True

erpnext/selling/doctype/quotation/test_quotation.py

@@ -52,8 +52,22 @@ class TestQuotation(FrappeTestCase):
 		self.assertEqual(qo.get("items")[0].qty, 11)
 		self.assertEqual(qo.get("items")[-1].rate, 100)
 
-	def test_update_child_disallow_rate_change(self):
-		qo = make_quotation(qty=4)
+	def test_update_child_rate_change(self):
+		from erpnext.stock.doctype.item.test_item import make_item
+
+		item_1 = make_item("_Test Item")
+		item_2 = make_item("_Test Item 1")
+
+		item_list = [
+			{"item_code": item_1.item_code, "warehouse": "_Test Warehouse - _TC", "qty": 10, "rate": 300},
+			{"item_code": item_2.item_code, "warehouse": "_Test Warehouse - _TC", "qty": 5, "rate": 400},
+		]
+
+		qo = make_quotation(item_list=item_list)
+		so = make_sales_order(qo.name, args={"filtered_children": [qo.items[0].name]})
+		so.delivery_date = nowdate()
+		so.submit()
+		qo.reload()
 		trans_item = json.dumps(
 			[
 				{
@@ -61,10 +75,35 @@ class TestQuotation(FrappeTestCase):
 					"rate": 5000,
 					"qty": qo.items[0].qty,
 					"docname": qo.items[0].name,
-				}
+				},
+				{
+					"item_code": qo.items[1].item_code,
+					"rate": qo.items[1].rate,
+					"qty": qo.items[1].qty,
+					"docname": qo.items[1].name,
+				},
 			]
 		)
 		self.assertRaises(frappe.ValidationError, update_child_qty_rate, "Quotation", trans_item, qo.name)
+		trans_item = json.dumps(
+			[
+				{
+					"item_code": qo.items[0].item_code,
+					"rate": qo.items[0].rate,
+					"qty": qo.items[0].qty,
+					"docname": qo.items[0].name,
+				},
+				{
+					"item_code": qo.items[1].item_code,
+					"rate": 50,
+					"qty": qo.items[1].qty,
+					"docname": qo.items[1].name,
+				},
+			]
+		)
+		update_child_qty_rate("Quotation", trans_item, qo.name)
+		qo.reload()
+		self.assertEqual(qo.items[1].rate, 50)
 
 	def test_update_child_removing_item(self):
 		qo = make_quotation(qty=10)