asset_table

# -*- coding: utf-8 -*-
# Copyright (c) 2015, Frappe and contributors
# For license information, please see license.txt

from __future__ import unicode_literals
import frappe
from frappe import _
from frappe.model.document import Document

class AssetTable(Document):
    def validate(self):
            privious_assign_details=frappe.get_list("Asset Table",fields=["serial_no","item_name"],filters={"name":("!=",self.name)})
            for i in privious_assign_details:
                if i.serial_no==self.serial_no:
                    frappe.throw(_("Item {0} with serial no {1} already assigned to employee").format(self,item_name,self.serial_no))