fix: set asset's valuation_rate according to asset quantity (backport #…

…38254) (#38256)

fix: set asset's valuation_rate according to asset quantity (#38254)

(cherry picked from commit e2bb4e2)

Co-authored-by: Anand Baburajan <anandbaburajan@gmail.com>

erpnext/stock/doctype/purchase_receipt/purchase_receipt.py

@@ -731,12 +731,18 @@ def make_tax_gl_entries(self, gl_entries):
 
 	def update_assets(self, item, valuation_rate):
 		assets = frappe.db.get_all(
-			"Asset", filters={"purchase_receipt": self.name, "item_code": item.item_code}
+			"Asset",
+			filters={"purchase_receipt": self.name, "item_code": item.item_code},
+			fields=["name", "asset_quantity"],
 		)
 
 		for asset in assets:
-			frappe.db.set_value("Asset", asset.name, "gross_purchase_amount", flt(valuation_rate))
-			frappe.db.set_value("Asset", asset.name, "purchase_receipt_amount", flt(valuation_rate))
+			frappe.db.set_value(
+				"Asset", asset.name, "gross_purchase_amount", flt(valuation_rate) * asset.asset_quantity
+			)
+			frappe.db.set_value(
+				"Asset", asset.name, "purchase_receipt_amount", flt(valuation_rate) * asset.asset_quantity
+			)
 
 	def update_status(self, status):
 		self.set_status(update=True, status=status)