From 689608e4cb7295d462429c328f971709f226e385 Mon Sep 17 00:00:00 2001
From: Arthur Neves <arthurnn@gmail.com>
Date: Thu, 4 Dec 2014 11:58:17 -0500
Subject: [PATCH] Work around mongoid empty in query

---
 app/models/notice.rb | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/app/models/notice.rb b/app/models/notice.rb
index df61c85..4cca6d8 100644
--- a/app/models/notice.rb
+++ b/app/models/notice.rb
@@ -30,7 +30,11 @@ class Notice
 
   scope :ordered, ->{ order_by(:created_at.asc) }
   scope :reverse_ordered, ->{ order_by(:created_at.desc) }
-  scope :for_errs, lambda {|errs| where(:err_id.in => errs.all.map(&:id))}
+  scope :for_errs, Proc.new { |errs|
+    if (ids = errs.all.map(&:id)) && ids.present?
+      where(:err_id.in => ids)
+    end
+  }
 
   def user_agent
     agent_string = env_vars['HTTP_USER_AGENT']
--
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