From 5df7d9aec202981ff4789aee9cf9aa0bf1e4e776 Mon Sep 17 00:00:00 2001
From: Martin Asquino <martin.asquino@gmail.com>
Date: Tue, 4 Jul 2017 01:05:09 -0300
Subject: [PATCH] added isSubset rule

---
 lib/match/rules.js | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/match/rules.js b/lib/match/rules.js
index 4197100..64a097a 100644
--- a/lib/match/rules.js
+++ b/lib/match/rules.js
@@ -122,6 +122,7 @@ module.exports = {
 	'maxLength'	: function (x, max) { return validator.isLength(x, 0, max); },
 
 	'regex' : function (x, regex) { return validator.matches(x, regex); },
-	'notRegex' : function (x, regex) { return !validator.matches(x, regex); }
+	'notRegex' : function (x, regex) { return !validator.matches(x, regex); },
+  'isSubset': function (x, array) { return _.isArray(x) && x.length === _.intersection(x, array).length;  }
 
 };