From e201765f027d26548bbad208e8909a82da118ba4 Mon Sep 17 00:00:00 2001
From: Rick Barrette <rickbarrette@gmail.com>
Date: Mon, 1 Aug 2016 19:31:51 -0400
Subject: [PATCH] Update vehicles_controller.rb

---
 app/controllers/vehicles_controller.rb | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/app/controllers/vehicles_controller.rb b/app/controllers/vehicles_controller.rb
index 1ce7a99..e6daf19 100644
--- a/app/controllers/vehicles_controller.rb
+++ b/app/controllers/vehicles_controller.rb
@@ -91,5 +91,18 @@ class VehiclesController < ApplicationController
       render_404
     end
   end
+  
+  private
+  
+  def only_one_non_zero?( array )
+    found_non_zero = false
+    array.each do |val|
+      if val!=0
+        return false if found_non_zero
+        found_non_zero = true
+      end
+    end
+    found_non_zero
+  end
 
 end