refactored purchase cycle's get item details and update item details functions and started with purchase price list

controllers/buying_controller.py

@@ -0,0 +1,40 @@
+# ERPNext - web based ERP (http://erpnext.com)
+# Copyright (C) 2012 Web Notes Technologies Pvt Ltd
+# 
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+# 
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+from __future__ import unicode_literals
+import webnotes
+
+from buying.utils import get_item_details
+
+from utilities.transaction_base import TransactionBase
+class BuyingController(TransactionBase):
+	def validate(self):
+		pass
+		
+	def update_item_details(self):
+		for item in self.doclist.get({"parentfield": self.fname}):
+			ret = get_item_details({
+				"doctype": self.doc.doctype,
+				"docname": self.doc.name,
+				"item_code": item.item_code,
+				"warehouse": item.warehouse,
+				"supplier": self.doc.supplier,
+				"transaction_date": self.doc.posting_date,
+				"conversion_rate": self.doc.conversion_rate
+			})
+			for r in ret:
+				if not item.fields.get(r):
+					item.fields[r] = ret[r]