fix: link Purchase Invoice and Receipt Items to Asset

erpnext/patches/v15_0/link_purchase_item_to_asset_doc.py

@@ -0,0 +1,68 @@
+import frappe
+
+
+def execute():
+	if frappe.db.has_column("Asset", "purchase_invoice_item") and frappe.db.has_column(
+		"Asset", "purchase_receipt_item"
+	):
+		# Get all assets with their related Purchase Invoice and Purchase Receipt
+		assets = frappe.get_all(
+			"Asset",
+			filters={"docstatus": 0},
+			fields=[
+				"name",
+				"item_code",
+				"purchase_invoice",
+				"purchase_receipt",
+				"gross_purchase_amount",
+				"asset_quantity",
+				"purchase_invoice_item",
+				"purchase_receipt_item",
+			],
+		)
+
+		for asset in assets:
+			# Get Purchase Invoice Items
+			if asset.purchase_invoice and not asset.purchase_invoice_item:
+				purchase_invoice_item = get_linked_item(
+					"Purchase Invoice Item",
+					asset.purchase_invoice,
+					asset.item_code,
+					asset.gross_purchase_amount,
+					asset.asset_quantity,
+				)
+				frappe.db.set_value("Asset", asset.name, "purchase_invoice_item", purchase_invoice_item)
+
+			# Get Purchase Receipt Items
+			if asset.purchase_receipt and not asset.purchase_receipt_item:
+				purchase_receipt_item = get_linked_item(
+					"Purchase Receipt Item",
+					asset.purchase_receipt,
+					asset.item_code,
+					asset.gross_purchase_amount,
+					asset.asset_quantity,
+				)
+				frappe.db.set_value("Asset", asset.name, "purchase_receipt_item", purchase_receipt_item)
+
+
+def get_linked_item(doctype, parent, item_code, amount, quantity):
+	items = frappe.get_all(
+		doctype,
+		filters={
+			"parenttype": doctype.replace(" Item", ""),
+			"parent": parent,
+			"item_code": item_code,
+		},
+		fields=["name", "amount", "qty", "landed_cost_voucher_amount"],
+	)
+	if len(items) == 1:
+		# If only one item exists, return it directly
+		return items[0].name
+
+	for item in items:
+		landed_cost = item.get("landed_cost_voucher_amount", 0)
+		if item.amount + landed_cost == amount and item.qty == quantity:
+			return item.name
+
+	# If no exact match, return None
+	return None