Merge pull request #44592 from frappe/mergify/bp/version-15/pr-44584

fix: BOM for variant items (backport #44580) (backport #44584)

erpnext/manufacturing/doctype/bom/bom.js

@@ -182,25 +182,30 @@ frappe.ui.form.on("BOM", {
 	},
 
 	make_work_order(frm) {
-		frm.events.setup_variant_prompt(frm, "Work Order", (frm, item, data, variant_items) => {
-			frappe.call({
-				method: "erpnext.manufacturing.doctype.work_order.work_order.make_work_order",
-				args: {
-					bom_no: frm.doc.name,
-					item: item,
-					qty: data.qty || 0.0,
-					project: frm.doc.project,
-					variant_items: variant_items,
-				},
-				freeze: true,
-				callback(r) {
-					if (r.message) {
-						let doc = frappe.model.sync(r.message)[0];
-						frappe.set_route("Form", doc.doctype, doc.name);
-					}
-				},
-			});
-		});
+		frm.events.setup_variant_prompt(
+			frm,
+			"Work Order",
+			(frm, item, data, variant_items, use_multi_level_bom) => {
+				frappe.call({
+					method: "erpnext.manufacturing.doctype.work_order.work_order.make_work_order",
+					args: {
+						bom_no: frm.doc.name,
+						item: item,
+						qty: data.qty || 0.0,
+						project: frm.doc.project,
+						variant_items: variant_items,
+						use_multi_level_bom: use_multi_level_bom,
+					},
+					freeze: true,
+					callback(r) {
+						if (r.message) {
+							let doc = frappe.model.sync(r.message)[0];
+							frappe.set_route("Form", doc.doctype, doc.name);
+						}
+					},
+				});
+			}
+		);
 	},
 
 	make_variant_bom(frm) {
@@ -248,6 +253,13 @@ frappe.ui.form.on("BOM", {
 					};
 				},
 			});
+
+			fields.push({
+				fieldtype: "Check",
+				label: __("Use Multi-Level BOM"),
+				fieldname: "use_multi_level_bom",
+				default: 1,
+			});
 		}
 
 		if (!skip_qty_field) {
@@ -285,6 +297,7 @@ frappe.ui.form.on("BOM", {
 				fieldname: "items",
 				fieldtype: "Table",
 				label: __("Raw Materials"),
+				depends_on: "eval:!doc.use_multi_level_bom",
 				fields: [
 					{
 						fieldname: "item_code",
@@ -347,14 +360,15 @@ frappe.ui.form.on("BOM", {
 			(data) => {
 				let item = data.item || frm.doc.item;
 				let variant_items = data.items || [];
+				let use_multi_level_bom = data.use_multi_level_bom || 0;
 
 				variant_items.forEach((d) => {
-					if (!d.variant_item_code) {
+					if (!d.variant_item_code && !use_multi_level_bom) {
 						frappe.throw(__("Select variant item code for the template item {0}", [d.item_code]));
 					}
 				});
 
-				callback(frm, item, data, variant_items);
+				callback(frm, item, data, variant_items, use_multi_level_bom);
 			},
 			__(title),
 			__("Create")

erpnext/manufacturing/doctype/work_order/work_order.py

@@ -1299,7 +1299,7 @@ def get_item_details(item, project=None, skip_bom_info=False, throw=True):
 
 
 @frappe.whitelist()
-def make_work_order(bom_no, item, qty=0, project=None, variant_items=None):
+def make_work_order(bom_no, item, qty=0, project=None, variant_items=None, use_multi_level_bom=None):
 	if not frappe.has_permission("Work Order", "write"):
 		frappe.throw(_("Not permitted"), frappe.PermissionError)
 
@@ -1309,12 +1309,13 @@ def make_work_order(bom_no, item, qty=0, project=None, variant_items=None):
 	wo_doc.production_item = item
 	wo_doc.update(item_details)
 	wo_doc.bom_no = bom_no
+	wo_doc.use_multi_level_bom = cint(use_multi_level_bom)
 
 	if flt(qty) > 0:
 		wo_doc.qty = flt(qty)
 		wo_doc.get_items_and_operations_from_bom()
 
-	if variant_items:
+	if variant_items and not wo_doc.use_multi_level_bom:
 		add_variant_item(variant_items, wo_doc, bom_no, "required_items")
 
 	return wo_doc
@@ -1358,7 +1359,18 @@ def add_variant_item(variant_items, wo_doc, bom_no, table_name="items"):
 
 		args["amount"] = flt(args.get("required_qty")) * flt(args.get("rate"))
 		args["uom"] = item_data.stock_uom
-		wo_doc.append(table_name, args)
+
+		existing_row = get_template_rm_item(wo_doc, item.get("item_code"))
+		if existing_row:
+			existing_row.update(args)
+		else:
+			wo_doc.append(table_name, args)
+
+
+def get_template_rm_item(wo_doc, item_code):
+	for row in wo_doc.required_items:
+		if row.item_code == item_code:
+			return row
 
 
 @frappe.whitelist()