Set numeric ranges in Item tamplate if blank (#12199)

erpnext/patches.txt

@@ -484,3 +484,4 @@ erpnext.patches.v10_0.copy_projects_renamed_fields
 erpnext.patches.v10_0.enabled_regional_print_format_based_on_country
 erpnext.patches.v10_0.update_asset_calculate_depreciation
 erpnext.patches.v10_0.add_guardian_role_for_parent_portal
+erpnext.patches.v10_0.set_numeric_ranges_in_template_if_blank

erpnext/patches/v10_0/set_numeric_ranges_in_template_if_blank.py

@@ -0,0 +1,35 @@
+# Copyright (c) 2017, Frappe and Contributors
+# License: GNU General Public License v3. See license.txt
+
+from __future__ import unicode_literals
+import frappe
+
+def execute():
+	item_numeric_attributes = frappe.db.sql("""
+		select name, numeric_values, from_range, to_range, increment
+		from `tabItem Attribute`
+		where numeric_values = 1
+	""", as_dict=1)
+
+	for d in item_numeric_attributes:
+		frappe.db.sql("""
+			update `tabItem Variant Attribute`
+			set
+				from_range = CASE
+					WHEN from_range = 0 THEN %(from_range)s
+					ELSE from_range
+					END,
+				to_range = CASE
+					WHEN to_range = 0 THEN %(to_range)s
+					ELSE to_range
+					END,
+				increment = CASE
+					WHEN increment = 0 THEN %(increment)s
+					ELSE increment
+					END,
+				numeric_values = %(numeric_values)s
+			where
+				attribute = %(name)s
+				and exists(select name from tabItem 
+					where name=`tabItem Variant Attribute`.parent and has_variants=1)
+		""", d)

erpnext/stock/doctype/item/item.json

@@ -1532,7 +1532,7 @@
    "report_hide": 0, 
    "reqd": 0, 
    "search_index": 0, 
-   "set_only_once": 1, 
+   "set_only_once": 0, 
    "unique": 0
   }, 
   {
@@ -3453,7 +3453,7 @@
  "issingle": 0, 
  "istable": 0, 
  "max_attachments": 1, 
- "modified": "2017-12-13 07:20:25.932499", 
+ "modified": "2017-12-27 15:47:17.039337", 
  "modified_by": "Administrator", 
  "module": "Stock", 
  "name": "Item",