From 5b14bac4f69cc0164886ca587047301fb35a00c2 Mon Sep 17 00:00:00 2001
From: dristybutola <dristibutola@gmail.com>
Date: Oct 09 2017 05:13:57 +0000
Subject: Update hubs/widgets/validators.py for Link validation


---

diff --git a/hubs/widgets/validators.py b/hubs/widgets/validators.py
index f8c5b8f..a8d5037 100644
--- a/hubs/widgets/validators.py
+++ b/hubs/widgets/validators.py
@@ -41,7 +41,17 @@ def Integer(value):
 def Link(value):
     """Raises an error if the value doesn't look like a link."""
     # TODO -- verify that this is actually a link
-    return value
+    url = re.compile(
+        r'^(?:http|ftp)s?://' # http:// or https://
+        r'(?:(?:[A-Z0-9](?:[A-Z0-9-]{0,61}[A-Z0-9])?\.)+(?:[A-Z]{2,6}\.?|[A-Z0-9-]{2,}\.?)|'
+        r'localhost|'
+        r'\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3})' 
+        r'(?::\d+)?'
+        r'(?:/?|[/?]\S+)$',re.I)
+    if url:
+        return value
+    else:
+        raise ValueError('Invalid Url')
 
 
 def Username(value):