app/models/bigbluebutton_server.rb in bigbluebutton_rails-1.0.0 vs app/models/bigbluebutton_server.rb in bigbluebutton_rails-1.1.0

@@ -2,10 +2,10 @@
 
 class BigbluebuttonServer < ActiveRecord::Base
   has_many :rooms,
            :class_name => 'BigbluebuttonRoom',
            :foreign_key => 'server_id',
-           :dependent => :destroy
+           :dependent => :nullify
 
   validates :name,
             :presence => true,
             :uniqueness => true,
             :length => { :minimum => 1, :maximum => 500 }