task made mandatory in project

erpnext/projects/doctype/project/project.json

@@ -130,7 +130,8 @@
    "label": "Tasks", 
    "options": "Project Task", 
    "permlevel": 0, 
-   "precision": ""
+   "precision": "", 
+   "reqd": 0
   }, 
   {
    "fieldname": "percent_complete", 
@@ -278,7 +279,7 @@
  "icon": "icon-puzzle-piece", 
  "idx": 1, 
  "max_attachments": 4, 
- "modified": "2015-03-30 08:42:33.940104", 
+ "modified": "2015-03-31 06:12:03.372091", 
  "modified_by": "Administrator", 
  "module": "Projects", 
  "name": "Project", 

erpnext/projects/doctype/project/project.py

@@ -34,11 +34,18 @@ class Project(Document):
 		return ret
 
 	def validate(self):
+		self.validate_dates()
+		self.validate_tasks()
+		self.sync_tasks()
+
+	def validate_dates(self):
 		if self.project_start_date and self.completion_date:
 			if getdate(self.completion_date) < getdate(self.project_start_date):
 				frappe.throw(_("Expected Completion Date can not be less than Project Start Date"))
-
-		self.sync_tasks()
+				
+	def validate_tasks(self):
+		if not self.tasks:
+			frappe.throw("Task is mandatory against a project")
 
 	def sync_tasks(self):
 		"""sync tasks and remove table"""