fix: Creating new item price incase of changes in expired item price (backport #53534) (#53544)

Co-authored-by: Nishka Gosalia <nishkagosalia@Nishkas-MacBook-Air.local>
Co-authored-by: Nishka Gosalia <58264710+nishkagosalia@users.noreply.github.com>
fix: Creating new item price incase of changes in expired item price (#53534)

erpnext/selling/doctype/sales_order/test_sales_order.py

@@ -57,6 +57,45 @@ class TestSalesOrder(AccountsTestMixin, FrappeTestCase):
 	def tearDown(self):
 		frappe.set_user("Administrator")
 
+	@change_settings(
+		"Stock Settings",
+		{
+			"auto_insert_price_list_rate_if_missing": 1,
+			"update_existing_price_list_rate": 1,
+			"update_price_list_based_on": "Rate",
+		},
+	)
+	def test_sales_order_expired_item_price(self):
+		price_list = "_Test Price List"
+
+		item_1 = make_item("_Test Expired Item 1", {"is_stock_item": 1})
+
+		frappe.db.delete("Item Price", {"item_code": item_1.item_code})
+
+		item_price = frappe.new_doc("Item Price")
+		item_price.item_code = item_1.item_code
+		item_price.price_list = price_list
+		item_price.price_list_rate = 100
+		item_price.valid_from = add_days(today(), -10)
+		item_price.valid_upto = add_days(today(), -5)
+		item_price.save()
+
+		so = make_sales_order(
+			item_code=item_1.item_code, qty=1, rate=1000, selling_price_list=price_list, do_not_save=True
+		)
+		so.save()
+		so.reload()
+
+		self.assertEqual(frappe.db.get_value("Item Price", item_price.name, "price_list_rate"), 100)
+		self.assertEqual(
+			frappe.db.count("Item Price", {"item_code": item_1.item_code, "price_list": price_list}),
+			2,
+		)
+		all_item_prices = frappe.get_all(
+			"Item Price", filters={"item_code": item_1.item_code}, order_by="valid_from desc"
+		)
+		self.assertEqual(frappe.db.get_value("Item Price", all_item_prices[0].name, "price_list_rate"), 1000)
+
 	def test_sales_order_skip_delivery_note(self):
 		so = make_sales_order(do_not_submit=True)
 		so.order_type = "Maintenance"

erpnext/stock/get_item_details.py

@@ -10,7 +10,7 @@ from frappe.model import child_table_fields, default_fields
 from frappe.model.meta import get_field_precision
 from frappe.model.utils import get_fetch_values
 from frappe.query_builder.functions import IfNull, Sum
-from frappe.utils import add_days, add_months, cint, cstr, flt, getdate, parse_json
+from frappe.utils import add_days, add_months, cint, cstr, flt, get_link_to_form, getdate, parse_json
 
 from erpnext import get_company_currency
 from erpnext.accounts.doctype.pricing_rule.pricing_rule import (
@@ -972,16 +972,30 @@ def insert_item_price(args):
 	):
 		return
 
-	item_price = frappe.db.get_value(
+	transaction_date = (
+		getdate(args.get("posting_date") or args.get("transaction_date") or args.get("posting_datetime"))
+		or getdate()
+	)
+
+	item_prices = frappe.get_all(
 		"Item Price",
-		{
+		filters={
 			"item_code": args.item_code,
 			"price_list": args.price_list,
 			"currency": args.currency,
 			"uom": args.stock_uom,
 		},
-		["name", "price_list_rate"],
-		as_dict=1,
+		fields=["name", "price_list_rate", "valid_from", "valid_upto"],
+		order_by="valid_from desc, creation desc",
+	)
+	item_price = next(
+		(
+			row
+			for row in item_prices
+			if (not row.valid_from or getdate(row.valid_from) <= transaction_date)
+			and (not row.valid_upto or getdate(row.valid_upto) >= transaction_date)
+		),
+		item_prices[0] if item_prices else None,
 	)
 
 	update_based_on_price_list_rate = stock_settings.update_price_list_based_on == "Price List Rate"
@@ -996,11 +1010,35 @@ def insert_item_price(args):
 		if not price_list_rate or item_price.price_list_rate == price_list_rate:
 			return
 
-		frappe.db.set_value("Item Price", item_price.name, "price_list_rate", price_list_rate)
-		frappe.msgprint(
-			_("Item Price updated for {0} in Price List {1}").format(args.item_code, args.price_list),
-			alert=True,
-		)
+		is_price_valid_for_transaction = (
+			not item_price.valid_from or getdate(item_price.valid_from) <= transaction_date
+		) and (not item_price.valid_upto or getdate(item_price.valid_upto) >= transaction_date)
+		if is_price_valid_for_transaction:
+			frappe.db.set_value("Item Price", item_price.name, "price_list_rate", price_list_rate)
+			frappe.msgprint(
+				_("Item Price updated for {0} in Price List {1}").format(
+					get_link_to_form("Item", args.item_code), args.price_list
+				),
+				alert=True,
+			)
+		else:
+			# if price is not valid for the transaction date, insert a new price list rate with updated price and future validity
+
+			item_price = frappe.new_doc(
+				"Item Price",
+				item_code=args.item_code,
+				price_list_rate=price_list_rate,
+				currency=args.currency,
+				uom=args.stock_uom,
+				price_list=args.price_list,
+			)
+			item_price.insert()
+			frappe.msgprint(
+				_("Item Price Added for {0} in Price List {1}").format(
+					get_link_to_form("Item", args.item_code), args.price_list
+				),
+				alert=True,
+			)
 	else:
 		rate_to_consider = (
 			(flt(args.price_list_rate) or flt(args.rate))