incoming rate for sales return as per delivery note outgoing rate

stock/doctype/stock_entry/stock_entry.js

@@ -226,7 +226,8 @@ cur_frm.cscript.s_warehouse = function(doc, cdt, cdn) {
 		'warehouse'		: cstr(d.s_warehouse) || cstr(d.t_warehouse),
 		'transfer_qty'	: d.transfer_qty,
 		'serial_no'		: d.serial_no,
-		'bom_no'		: d.bom_no
+		'bom_no'		: d.bom_no,
+		'qty'			: d.s_warehouse ? -1* d.qty : d.qty
 	}
 	get_server_fields('get_warehouse_details', JSON.stringify(args), 
 		'mtn_details', doc, cdt, cdn, 1);

stock/doctype/stock_entry/stock_entry.py

@@ -25,6 +25,8 @@ from webnotes.model.code import get_obj
 from webnotes import msgprint, _
 from stock.utils import get_incoming_rate
 from stock.stock_ledger import get_previous_sle
+import json
+
 
 sql = webnotes.conn.sql
 	
@@ -157,23 +159,46 @@ class DocType(TransactionBase):
 	def get_stock_and_rate(self):
 		"""get stock and incoming rate on posting date"""
 		for d in getlist(self.doclist, 'mtn_details'):
-			args = {
+			args = webnotes._dict({
 				"item_code": d.item_code,
 				"warehouse": d.s_warehouse or d.t_warehouse,
 				"posting_date": self.doc.posting_date,
 				"posting_time": self.doc.posting_time,
-				"qty": d.transfer_qty,
+				"qty": d.s_warehouse and -1*d.transfer_qty or d.transfer_qty,
 				"serial_no": d.serial_no,
-				"bom_no": d.bom_no
-			}
+				"bom_no": d.bom_no,
+			})
 			# get actual stock at source warehouse
 			d.actual_qty = get_previous_sle(args).get("qty_after_transaction") or 0
 			
 			# get incoming rate
-			if not flt(d.incoming_rate):
-				d.incoming_rate = get_incoming_rate(args)
+			if not flt(d.incoming_rate) or self.doc.purpose == "Sales Return":
+				d.incoming_rate = self.get_incoming_rate(args)
 				
 			d.amount = flt(d.qty) * flt(d.incoming_rate)
+			
+	def get_incoming_rate(self, args):
+		if self.doc.purpose == "Sales Return" and \
+				(self.doc.delivery_note_no or self.doc.sales_invoice_no):
+			sle = webnotes.conn.sql("""select name, posting_date, posting_time, 
+				actual_qty, stock_value from `tabStock Ledger Entry` 
+				where voucher_type = %s and voucher_no = %s and 
+				item_code = %s and ifnull(is_cancelled, 'No') = 'No' limit 1""", 
+				((self.doc.delivery_note_no and "Delivery Note" or "Sales Invoice"),
+				self.doc.delivery_note_no or self.doc.sales_invoice_no, args.item_code), as_dict=1)
+			if sle:
+				args.update({
+					"posting_date": sle[0].posting_date,
+					"posting_time": sle[0].posting_time,
+					"sle": sle[0].name
+				})
+				previous_sle = get_previous_sle(args)
+				incoming_rate = (flt(sle[0].stock_value) - flt(previous_sle.get("stock_value"))) / \
+					flt(sle[0].actual_qty)
+		else:
+			incoming_rate = get_incoming_rate(args)
+			
+		return incoming_rate
 		
 	def validate_incoming_rate(self):
 		for d in getlist(self.doclist, 'mtn_details'):
@@ -264,8 +289,7 @@ class DocType(TransactionBase):
 			pro_obj.doc.save()
 					
 	def get_item_details(self, arg):
-		import json
-		arg, actual_qty, in_rate = json.loads(arg), 0, 0
+		arg = json.loads(arg)
 
 		item = sql("""select stock_uom, description, item_name from `tabItem` 
 			where name = %s and (ifnull(end_of_life,'')='' or end_of_life ='0000-00-00' 
@@ -305,16 +329,16 @@ class DocType(TransactionBase):
 		return ret
 		
 	def get_warehouse_details(self, args):
-		import json
-		args, actual_qty, in_rate = json.loads(args), 0, 0
+		args = json.loads(args)
 		args.update({
 			"posting_date": self.doc.posting_date,
-			"posting_time": self.doc.posting_time
+			"posting_time": self.doc.posting_time,
 		})
+		args = webnotes._dict(args)
 		
 		ret = {
 			"actual_qty" : get_previous_sle(args).get("qty_after_transaction") or 0,
-			"incoming_rate" : get_incoming_rate(args)
+			"incoming_rate" : self.get_incoming_rate(args)
 		}
 		return ret
 		

stock/doctype/stock_reconciliation/stock_reconciliation.txt

@@ -2,9 +2,9 @@
  {
   "owner": "Administrator", 
   "docstatus": 0, 
-  "creation": "2013-01-14 15:14:40", 
+  "creation": "2013-01-15 12:28:57", 
   "modified_by": "Administrator", 
-  "modified": "2013-01-15 12:25:13"
+  "modified": "2013-01-16 13:59:28"
  }, 
  {
   "allow_attach": 0, 
@@ -13,6 +13,7 @@
   "search_fields": "posting_date", 
   "module": "Stock", 
   "doctype": "DocType", 
+  "read_only_onload": 0, 
   "autoname": "SR/.######", 
   "description": "This tool helps you to update or fix the quantity and valuation of stock in the system. It is typically used to synchronise the system values and what actually exists in your warehouses.", 
   "allow_email": 1, 
@@ -33,7 +34,7 @@
   "read": 1, 
   "cancel": 1, 
   "name": "__common__", 
-  "amend": 0, 
+  "amend": 1, 
   "create": 1, 
   "doctype": "DocPerm", 
   "submit": 1, 

stock/utils.py

@@ -78,12 +78,11 @@ def get_incoming_rate(args):
 		valuation_method = get_valuation_method(args.get("item_code"))
 		previous_sle = get_previous_sle(args)
 		if valuation_method == 'FIFO':
-			# get rate based on the last item value?
-			if args.get("qty"):
-				if not previous_sle:
-					return 0.0
-				stock_queue = json.loads(previous_sle.get('stock_queue', '[]'))
-				in_rate = stock_queue and get_fifo_rate(stock_queue) or 0
+			if not previous_sle:
+				return 0.0
+			previous_stock_queue = json.loads(previous_sle.get('stock_queue', '[]'))
+			in_rate = previous_stock_queue and \
+				get_fifo_rate(previous_stock_queue, args.get("qty")) or 0
 		elif valuation_method == 'Moving Average':
 			in_rate = previous_sle.get('valuation_rate') or 0
 	return in_rate
@@ -104,13 +103,29 @@ def get_valuation_method(item_code):
 		val_method = get_defaults().get('valuation_method', 'FIFO')
 	return val_method
 		
-def get_fifo_rate(stock_queue):
-	"""get FIFO (average) Rate from Stack"""
-	if not stock_queue:
-		return 0.0
-		
-	total = sum(f[0] for f in stock_queue)	
-	return total and sum(f[0] * f[1] for f in stock_queue) / flt(total) or 0.0
+def get_fifo_rate(previous_stock_queue, qty):
+	"""get FIFO (average) Rate from Queue"""
+	if qty >= 0:
+		total = sum(f[0] for f in previous_stock_queue)	
+		return total and sum(f[0] * f[1] for f in previous_stock_queue) / flt(total) or 0.0
+	else:
+		outgoing_cost = 0
+		qty_to_pop = abs(qty)
+		while qty_to_pop:
+			batch = previous_stock_queue[0]
+			if 0 < batch[0] <= qty_to_pop:
+				# if batch qty > 0
+				# not enough or exactly same qty in current batch, clear batch
+				outgoing_cost += flt(batch[0]) * flt(batch[1])
+				qty_to_pop -= batch[0]
+				previous_stock_queue.pop(0)
+			else:
+				# all from current batch
+				outgoing_cost += flt(qty_to_pop) * flt(batch[1])
+				batch[0] -= qty_to_pop
+				qty_to_pop = 0
+				
+		return outgoing_cost / abs(qty)
 	
 def get_valid_serial_nos(sr_nos, qty=0, item_code=''):
 	"""split serial nos, validate and return list of valid serial nos"""