Total Purchase Cost added to Projects

erpnext/projects/doctype/project/project.json

@@ -303,6 +303,15 @@
    "precision": "", 
    "read_only": 1
   }, 
+  {
+   "fieldname": "total_purchase_cost", 
+   "fieldtype": "Currency", 
+   "hidden": 0, 
+   "label": "Total Purchase Cost (via Purchase Invoice)", 
+   "permlevel": 0, 
+   "precision": "", 
+   "read_only": 1
+  }, 
   {
    "fieldname": "margin", 
    "fieldtype": "Section Break", 
@@ -347,7 +356,7 @@
  "icon": "icon-puzzle-piece", 
  "idx": 1, 
  "max_attachments": 4, 
- "modified": "2015-04-23 05:51:53.642253", 
+ "modified": "2015-04-27 07:37:44.239930", 
  "modified_by": "Administrator", 
  "module": "Projects", 
  "name": "Project", 

erpnext/projects/doctype/project/project.py

@@ -89,6 +89,10 @@ class Project(Document):
 		self.gross_margin = flt(total_cost.billing_amount) - flt(total_cost.costing_amount)
 		if self.total_billing_amount:
 			self.per_gross_margin = (self.gross_margin / flt(self.total_billing_amount)) *100
+			
+	def update_purchase_costing(self):
+		self.total_purchase_cost = frappe.db.sql("""select sum(grand_total) as cost
+			from `tabPurchase Invoice` where project = %s and docstatus=1 """, self.name, as_dict=1)[0].cost
 
 @frappe.whitelist()
 def get_cost_center_name(project_name):