Alert'destroy removes histories too,.

1 files changed, 8 insertions, 0 deletions

diff --git a/lib/mauve/history.rb b/lib/mauve/history.rb
index 74c5e3a..5a0caff 100644
--- a/lib/mauve/history.rb
+++ b/lib/mauve/history.rb
@@ -13,6 +13,8 @@ module Mauve
     belongs_to :alert
     belongs_to :history
 
+    after :destroy, :remove_unreferenced_histories
+
     def self.migrate!
       #
       # This copies the alert IDs from the old History table to the new AlertHistories thing, but only if there are no AertHistories 
@@ -41,6 +43,12 @@ module Mauve
       end
     end
 
+    private
+
+    def remove_unreferenced_histories
+      self.history.destroy unless self.history.alerts.count > 0
+    end
+
   end
 
   class History