feat: Create subcontracted PO from Material Request (#44745)

* feat: Create subcontracted PO from Material Request

* fix: Made minor changes in logic to pass all test cases

* refactor: Made changes suggested by mentor and simplified logic

* test: Made changes to tests

erpnext/controllers/status_updater.py

@@ -421,6 +421,13 @@ class StatusUpdater(Document):
 			if d.doctype != args["source_dt"]:
 				continue
 
+			if (
+				d.get("material_request")
+				and frappe.db.get_value("Material Request", d.material_request, "material_request_type")
+				== "Subcontracting"
+			):
+				args.update({"source_field": "fg_item_qty"})
+
 			self._update_modified(args, update_modified)
 
 			# updates qty in the child table

erpnext/stock/doctype/material_request/material_request.js

@@ -122,6 +122,12 @@ frappe.ui.form.on("Material Request", {
 						() => frm.events.make_purchase_order(frm),
 						__("Create")
 					);
+				} else if (frm.doc.material_request_type === "Subcontracting") {
+					frm.add_custom_button(
+						__("Subcontracted Purchase Order"),
+						() => frm.events.make_purchase_order(frm),
+						__("Create")
+					);
 				}
 			}
 

erpnext/stock/doctype/material_request/material_request.json

@@ -80,7 +80,7 @@
    "in_list_view": 1,
    "in_standard_filter": 1,
    "label": "Purpose",
-   "options": "Purchase\nMaterial Transfer\nMaterial Issue\nManufacture\nCustomer Provided",
+   "options": "Purchase\nMaterial Transfer\nMaterial Issue\nManufacture\nSubcontracting\nCustomer Provided",
    "reqd": 1
   },
   {
@@ -357,7 +357,7 @@
  "idx": 70,
  "is_submittable": 1,
  "links": [],
- "modified": "2024-03-27 13:10:04.971211",
+ "modified": "2024-12-16 12:46:02.262167",
  "modified_by": "Administrator",
  "module": "Stock",
  "name": "Material Request",

erpnext/stock/doctype/material_request/material_request.py

@@ -18,6 +18,9 @@ from erpnext.controllers.buying_controller import BuyingController
 from erpnext.manufacturing.doctype.work_order.work_order import get_item_details
 from erpnext.stock.doctype.item.item import get_item_defaults
 from erpnext.stock.stock_balance import get_indented_qty, update_bin_qty
+from erpnext.subcontracting.doctype.subcontracting_bom.subcontracting_bom import (
+	get_subcontracting_boms_for_finished_goods,
+)
 
 form_grid_templates = {"items": "templates/form_grid/material_request_grid.html"}
 
@@ -40,7 +43,12 @@ class MaterialRequest(BuyingController):
 		job_card: DF.Link | None
 		letter_head: DF.Link | None
 		material_request_type: DF.Literal[
-			"Purchase", "Material Transfer", "Material Issue", "Manufacture", "Customer Provided"
+			"Purchase",
+			"Material Transfer",
+			"Material Issue",
+			"Manufacture",
+			"Subcontracting",
+			"Customer Provided",
 		]
 		naming_series: DF.Literal["MAT-MR-.YYYY.-"]
 		per_ordered: DF.Percent
@@ -385,6 +393,22 @@ def update_item(obj, target, source_parent):
 	if getdate(target.schedule_date) < getdate(nowdate()):
 		target.schedule_date = None
 
+	if target.fg_item:
+		target.fg_item_qty = obj.stock_qty
+		if sc_bom := get_subcontracting_boms_for_finished_goods(target.fg_item):
+			target.item_code = sc_bom.service_item
+			target.uom = sc_bom.service_item_uom
+			target.conversion_factor = (
+				frappe.db.get_value(
+					"UOM Conversion Detail",
+					{"parent": sc_bom.service_item, "uom": sc_bom.service_item_uom},
+					"conversion_factor",
+				)
+				or 1
+			)
+			target.qty = target.fg_item_qty * sc_bom.conversion_factor
+			target.stock_qty = target.qty * target.conversion_factor
+
 
 def get_list_context(context=None):
 	from erpnext.controllers.website_list_for_contact import get_list_context
@@ -416,11 +440,18 @@ def make_purchase_order(source_name, target_doc=None, args=None):
 	if isinstance(args, str):
 		args = json.loads(args)
 
+	is_subcontracted = (
+		frappe.db.get_value("Material Request", source_name, "material_request_type") == "Subcontracting"
+	)
+
 	def postprocess(source, target_doc):
+		target_doc.is_subcontracted = is_subcontracted
 		if frappe.flags.args and frappe.flags.args.default_supplier:
 			# items only for given default supplier
 			supplier_items = []
 			for d in target_doc.items:
+				if is_subcontracted and not d.item_code:
+					continue
 				default_supplier = get_item_defaults(d.item_code, target_doc.company).get("default_supplier")
 				if frappe.flags.args.default_supplier == default_supplier:
 					supplier_items.append(d)
@@ -436,25 +467,37 @@ def make_purchase_order(source_name, target_doc=None, args=None):
 
 		return qty < d.stock_qty and child_filter
 
+	def generate_field_map():
+		field_map = [
+			["name", "material_request_item"],
+			["parent", "material_request"],
+			["sales_order", "sales_order"],
+			["sales_order_item", "sales_order_item"],
+			["wip_composite_asset", "wip_composite_asset"],
+		]
+
+		if is_subcontracted:
+			field_map.extend([["item_code", "fg_item"], ["qty", "fg_item_qty"]])
+		else:
+			field_map.extend([["uom", "stock_uom"], ["uom", "uom"]])
+
+		return field_map
+
 	doclist = get_mapped_doc(
 		"Material Request",
 		source_name,
 		{
 			"Material Request": {
 				"doctype": "Purchase Order",
-				"validation": {"docstatus": ["=", 1], "material_request_type": ["=", "Purchase"]},
+				"validation": {
+					"docstatus": ["=", 1],
+					"material_request_type": ["in", ["Purchase", "Subcontracting"]],
+				},
 			},
 			"Material Request Item": {
 				"doctype": "Purchase Order Item",
-				"field_map": [
-					["name", "material_request_item"],
-					["parent", "material_request"],
-					["uom", "stock_uom"],
-					["uom", "uom"],
-					["sales_order", "sales_order"],
-					["sales_order_item", "sales_order_item"],
-					["wip_composite_asset", "wip_composite_asset"],
-				],
+				"field_map": generate_field_map(),
+				"field_no_map": ["item_code", "item_name", "qty"] if is_subcontracted else [],
 				"postprocess": update_item,
 				"condition": select_item,
 			},

erpnext/stock/doctype/material_request/test_material_request.py

@@ -6,6 +6,7 @@
 
 
 import frappe
+import frappe.model
 from frappe.tests import IntegrationTestCase, UnitTestCase
 from frappe.utils import flt, today
 
@@ -53,6 +54,55 @@ class TestMaterialRequest(IntegrationTestCase):
 		self.assertEqual(po.doctype, "Purchase Order")
 		self.assertEqual(len(po.get("items")), len(mr.get("items")))
 
+	def test_make_subcontracted_purchase_order(self):
+		from erpnext.manufacturing.doctype.production_plan.test_production_plan import make_bom
+		from erpnext.stock.doctype.item.test_item import create_item, make_item
+		from erpnext.subcontracting.doctype.subcontracting_bom.test_subcontracting_bom import (
+			create_subcontracting_bom,
+		)
+
+		mr = frappe.copy_doc(self.globalTestRecords["Material Request"][0]).insert()
+		mr.material_request_type = "Subcontracting"
+		mr.submit()
+
+		frappe.db.set_value("Item", mr.items[0].item_code, "is_sub_contracted_item", 1)
+
+		raw_materials = ["Raw Material Item 1", "Raw Material Item 2"]
+		for item in raw_materials:
+			create_item(item)
+
+		frappe.new_doc("UOM").update({"uom_name": "Test UOM"}).save()
+		service_item = make_item(
+			properties={"is_stock_item": 0}, uoms=[{"uom": "Test UOM", "conversion_factor": 3}]
+		)
+
+		mr.items[0].default_bom = make_bom(item=mr.items[0].item_code, raw_materials=raw_materials)
+		mr.reload()
+
+		create_subcontracting_bom(
+			finished_good=mr.items[0].item_code,
+			service_item=service_item.name,
+			finished_good_qty=2,
+			service_item_qty=1,
+			service_item_uom="Test UOM",
+		)
+
+		po = make_purchase_order(mr.name)
+		po.supplier = "_Test Supplier"
+		po.items[0].schedule_date = today()
+		po.items.pop(1)
+
+		# Test 1 - Test if items stock qty, qty and finished good qty are calculated correctly based on provided UOMs
+		self.assertEqual(po.items[0].stock_qty, 81)
+		self.assertEqual(po.items[0].qty, 27)
+		self.assertEqual(po.items[0].fg_item_qty, 54)
+
+		po.submit()
+		mr.reload()
+
+		# Test 2 - MR items ordered qty should be updated based on PO items qty when submitted
+		self.assertEqual(mr.items[0].ordered_qty, 54)
+
 	def test_make_supplier_quotation(self):
 		mr = frappe.copy_doc(self.globalTestRecords["Material Request"][0]).insert()