From b0d2e89757d703d1b2317808251e1b7faa50fd45 Mon Sep 17 00:00:00 2001
From: pedrodelyra <pedrodelyra@gmail.com>
Date: Tue, 4 Aug 2015 17:07:43 -0300
Subject: [PATCH] Add method to calculate community rating's average

---
 plugins/communities_ratings/lib/community_rating.rb | 10 ++++++++++
 1 file changed, 10 insertions(+), 0 deletions(-)

diff --git a/plugins/communities_ratings/lib/community_rating.rb b/plugins/communities_ratings/lib/community_rating.rb
index 0731ec2..b0baeab 100644
--- a/plugins/communities_ratings/lib/community_rating.rb
+++ b/plugins/communities_ratings/lib/community_rating.rb
@@ -14,4 +14,14 @@ class CommunityRating < ActiveRecord::Base
 
   has_one :comment
 
+  def self.average_rating community_id
+    average = CommunityRating.where(community_id: community_id).average(:value)
+
+    if average
+      (average - average.truncate) >= 0.5 ? average.ceil : average.floor
+    else
+      nil
+    end
+  end
+
 end
--
libgit2 0.21.2