refactor: set actual and projected qty in Packed Item and Sales Invoice Item

erpnext/accounts/doctype/sales_invoice/sales_invoice.py

@@ -1025,23 +1025,11 @@ class SalesInvoice(SellingController):
 					frappe.throw(_("Could not update stock, invoice contains drop shipping item."))
 
 	def update_current_stock(self):
-		for d in self.get("items"):
-			if d.item_code and d.warehouse:
-				bin = frappe.db.sql(
-					"select actual_qty from `tabBin` where item_code = %s and warehouse = %s",
-					(d.item_code, d.warehouse),
-					as_dict=1,
-				)
-				d.actual_qty = bin and flt(bin[0]["actual_qty"]) or 0
+		for item in self.items:
+			item.set_actual_qty()
 
-		for d in self.get("packed_items"):
-			bin = frappe.db.sql(
-				"select actual_qty, projected_qty from `tabBin` where item_code =	%s and warehouse = %s",
-				(d.item_code, d.warehouse),
-				as_dict=1,
-			)
-			d.actual_qty = bin and flt(bin[0]["actual_qty"]) or 0
-			d.projected_qty = bin and flt(bin[0]["projected_qty"]) or 0
+		for packed_item in self.packed_items:
+			packed_item.set_actual_and_projected_qty()
 
 	def update_packing_list(self):
 		if cint(self.update_stock) == 1:

erpnext/accounts/doctype/sales_invoice_item/sales_invoice_item.py

@@ -102,3 +102,12 @@ class SalesInvoiceItem(Document):
 					frappe.bold(self.idx), frappe.bold(self.cost_center), frappe.bold(company)
 				)
 			)
+
+	def set_actual_qty(self):
+		if self.item_code and self.warehouse:
+			self.actual_qty = (
+				frappe.db.get_value(
+					"Bin", {"item_code": self.item_code, "warehouse": self.warehouse}, "actual_qty"
+				)
+				or 0
+			)

erpnext/stock/doctype/packed_item/packed_item.py

@@ -51,7 +51,16 @@ class PackedItem(Document):
 		warehouse: DF.Link | None
 	# end: auto-generated types
 
-	pass
+	def set_actual_and_projected_qty(self):
+		"Set actual and projected qty based on warehouse and item_code"
+		_bin = frappe.db.get_value(
+			"Bin",
+			{"item_code": self.item_code, "warehouse": self.warehouse},
+			["actual_qty", "projected_qty"],
+			as_dict=True,
+		)
+		self.actual_qty = _bin.actual_qty if _bin else 0
+		self.projected_qty = _bin.projected_qty if _bin else 0
 
 
 def make_packing_list(doc):