From d070f880e2267dc563b9c3ea37614b1c05438397 Mon Sep 17 00:00:00 2001
From: Nabin Hait <nabinhait@gmail.com>
Date: Wed, 14 Sep 2016 15:36:25 +0530
Subject: [PATCH] Validate length of fieldname

---
 frappe/model/db_schema.py | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/frappe/model/db_schema.py b/frappe/model/db_schema.py
index 3f62859487..8be6c7c3aa 100644
--- a/frappe/model/db_schema.py
+++ b/frappe/model/db_schema.py
@@ -102,6 +102,9 @@ class DbTable:
 		columns += self.columns.values()
 
 		for col in columns:
+			if len(col.fieldname) >= 64:
+				frappe.throw(_("Fieldname is limited to 64 characters"))
+			
 			if col.fieldtype in type_map and type_map[col.fieldtype][0]=="varchar":
 
 				# validate length range
@@ -112,7 +115,7 @@ class DbTable:
 				try:
 					# check for truncation
 					max_length = frappe.db.sql("""select max(char_length(`{fieldname}`)) from `tab{doctype}`"""\
-						.format(fieldname=col.fieldname, doctype=self.doctype))
+						.format(fieldname=col.fieldname, doctype=self.doctype), debug=1)
 
 				except MySQLdb.OperationalError, e:
 					if e.args[0]==1054: