Merge pull request #52112 from frappe/mergify/bp/version-16-hotfix/pr-52106

fix: show everything else besides other party specific item (backport #52106)

erpnext/controllers/queries.py

@@ -212,7 +212,10 @@ def item_query(doctype, txt, searchfield, start, page_len, filters, as_dict=Fals
 			party = filters.get("customer") or filters.get("supplier")
 			item_rules_list = frappe.get_all(
 				"Party Specific Item",
-				filters={"party": party},
+				filters={
+					"party": ["!=", party],
+					"party_type": "Customer" if filters.get("customer") else "Supplier",
+				},
 				fields=["restrict_based_on", "based_on_value"],
 			)
 
@@ -226,7 +229,7 @@ def item_query(doctype, txt, searchfield, start, page_len, filters, as_dict=Fals
 				filters_dict[rule.restrict_based_on].append(rule.based_on_value)
 
 			for filter in filters_dict:
-				filters[scrub(filter)] = ["in", filters_dict[filter]]
+				filters[scrub(filter)] = ["not in", filters_dict[filter]]
 
 			if filters.get("customer"):
 				del filters["customer"]

erpnext/selling/doctype/party_specific_item/test_party_specific_item.py

@@ -35,8 +35,7 @@ class TestPartySpecificItem(IntegrationTestCase):
 		items = item_query(
 			doctype="Item", txt="", searchfield="name", start=0, page_len=20, filters=filters, as_dict=False
 		)
-		for item in items:
-			self.assertEqual(item[0], self.item.name)
+		self.assertTrue(self.item.name in flatten(items))
 
 	def test_item_query_for_supplier(self):
 		create_party_specific_item(
@@ -49,5 +48,14 @@ class TestPartySpecificItem(IntegrationTestCase):
 		items = item_query(
 			doctype="Item", txt="", searchfield="name", start=0, page_len=20, filters=filters, as_dict=False
 		)
-		for item in items:
-			self.assertEqual(item[2], self.item.item_group)
+		self.assertTrue(self.item.item_group in flatten(items))
+
+
+def flatten(lst):
+	result = []
+	for item in lst:
+		if isinstance(item, tuple):
+			result.extend(flatten(item))
+		else:
+			result.append(item)
+	return result