- validate EAN or UPC-A code

- made Item Barcode Doctpye standard
- added stdnum to requirements

erpnext/stock/doctype/item/item.py

@@ -483,12 +483,18 @@ class Item(WebsiteGenerator):
                         check_list.append(d.tax_type)
 
     def validate_barcode(self):
+        from stdnum import ean
         if len(self.barcodes) > 0:
-            for barcode in self.barcodes:
-                duplicate = frappe.db.sql("""select name from `tabItem Barcode` where barcode = %s and parent != %s""", (barcode, self.name))
+            for item_barcode in self.barcodes:
+                duplicate = frappe.db.sql("""select name from `tabItem Barcode` where barcode = %s and parent != %s""", (item_barcode.barcode, self.name))
                 if duplicate:
                     frappe.throw(_("Barcode {0} already used in Item {1}").format(
-                        self.barcode, duplicate[0][0]))
+                        item_barcode.barcode, duplicate[0][0]))
+
+                if item_barcode.barcode_type:
+                    if not ean.is_valid(item_barcode.barcode):
+                        frappe.throw(_("Barcode {0} is not a valid {1} code").format(
+                            item_barcode.barcode, item_barcode.barcode_type))
 
     def validate_warehouse_for_reorder(self):
         '''Validate Reorder level table for duplicate and conditional mandatory'''

erpnext/stock/doctype/item_barcode/item_barcode.json

@@ -0,0 +1,102 @@
+{
+ "allow_copy": 0, 
+ "allow_guest_to_view": 0, 
+ "allow_import": 0, 
+ "allow_rename": 0, 
+ "beta": 0, 
+ "creation": "2017-12-09 18:54:50.562438", 
+ "custom": 0, 
+ "docstatus": 0, 
+ "doctype": "DocType", 
+ "document_type": "", 
+ "editable_grid": 1, 
+ "engine": "InnoDB", 
+ "fields": [
+  {
+   "allow_bulk_edit": 0, 
+   "allow_on_submit": 0, 
+   "bold": 0, 
+   "collapsible": 0, 
+   "columns": 0, 
+   "fieldname": "barcode", 
+   "fieldtype": "Data", 
+   "hidden": 0, 
+   "ignore_user_permissions": 0, 
+   "ignore_xss_filter": 0, 
+   "in_filter": 0, 
+   "in_global_search": 1, 
+   "in_list_view": 1, 
+   "in_standard_filter": 0, 
+   "label": "Barcode", 
+   "length": 0, 
+   "no_copy": 1, 
+   "permlevel": 0, 
+   "precision": "", 
+   "print_hide": 0, 
+   "print_hide_if_no_value": 0, 
+   "read_only": 0, 
+   "remember_last_selected_value": 0, 
+   "report_hide": 0, 
+   "reqd": 0, 
+   "search_index": 0, 
+   "set_only_once": 0, 
+   "unique": 1
+  }, 
+  {
+   "allow_bulk_edit": 0, 
+   "allow_on_submit": 0, 
+   "bold": 0, 
+   "collapsible": 0, 
+   "columns": 0, 
+   "fieldname": "barcode_type", 
+   "fieldtype": "Select", 
+   "hidden": 0, 
+   "ignore_user_permissions": 0, 
+   "ignore_xss_filter": 0, 
+   "in_filter": 0, 
+   "in_global_search": 0, 
+   "in_list_view": 1, 
+   "in_standard_filter": 0, 
+   "label": "Barcode Type", 
+   "length": 0, 
+   "no_copy": 0, 
+   "options": "\nEAN\nUPC-A", 
+   "permlevel": 0, 
+   "precision": "", 
+   "print_hide": 0, 
+   "print_hide_if_no_value": 0, 
+   "read_only": 0, 
+   "remember_last_selected_value": 0, 
+   "report_hide": 0, 
+   "reqd": 0, 
+   "search_index": 0, 
+   "set_only_once": 0, 
+   "unique": 0
+  }
+ ], 
+ "has_web_view": 0, 
+ "hide_heading": 0, 
+ "hide_toolbar": 0, 
+ "idx": 0, 
+ "image_view": 0, 
+ "in_create": 0, 
+ "is_submittable": 0, 
+ "issingle": 0, 
+ "istable": 1, 
+ "max_attachments": 0, 
+ "modified": "2017-12-10 18:39:10.566172", 
+ "modified_by": "Administrator", 
+ "module": "Stock", 
+ "name": "Item Barcode", 
+ "name_case": "", 
+ "owner": "Administrator", 
+ "permissions": [], 
+ "quick_entry": 1, 
+ "read_only": 0, 
+ "read_only_onload": 0, 
+ "show_name_in_global_search": 0, 
+ "sort_field": "modified", 
+ "sort_order": "DESC", 
+ "track_changes": 1, 
+ "track_seen": 0
+}

erpnext/stock/doctype/item_barcode/item_barcode.py

@@ -0,0 +1,10 @@
+# -*- coding: utf-8 -*-
+# Copyright (c) 2017, Frappe Technologies Pvt. Ltd. and contributors
+# For license information, please see license.txt
+
+from __future__ import unicode_literals
+import frappe
+from frappe.model.document import Document
+
+class ItemBarcode(Document):
+	pass

requirements.txt

@@ -2,3 +2,4 @@ frappe
 unidecode
 pygithub
 googlemaps
+python-stdnum