frappe/frappe#478 fixes

erpnext/controllers/accounts_controller.py

@@ -210,7 +210,7 @@ class AccountsController(TransactionBase):
 					"row_range": row_range
 				})
 		
-		if cint(tax.included_in_print_rate):
+		if cint(getattr(tax, "included_in_print_rate", None)):
 			if tax.charge_type == "Actual":
 				# inclusive tax cannot be of type Actual
 				throw((_("Row") 
@@ -259,7 +259,7 @@ class AccountsController(TransactionBase):
 
 				tax.tax_amount_after_discount_amount += current_tax_amount
 				
-				if tax.category:
+				if getattr(tax, "category", None):
 					# if just for valuation, do not add the tax amount in total
 					# hence, setting it as 0 for further steps
 					current_tax_amount = 0.0 if (tax.category == "Valuation") \

erpnext/controllers/buying_controller.py

@@ -50,7 +50,7 @@ class BuyingController(StockController):
 		from erpnext.stock.utils import validate_warehouse_company
 		
 		warehouses = list(set([d.warehouse for d in 
-			self.get(self.fname) if d.warehouse]))
+			self.get(self.fname) if getattr(d, "warehouse", None)]))
 				
 		for w in warehouses:
 			validate_warehouse_company(w, self.company)