Redmine 3.4.4

extra/sample_plugin/app/models/meeting.rb

@@ -0,0 +1,12 @@
+class Meeting < ActiveRecord::Base
+  belongs_to :project
+
+  acts_as_event :title => Proc.new {|o| "#{o.scheduled_on} Meeting"},
+                :datetime => :scheduled_on,
+                :author => nil,
+                :url => Proc.new {|o| {:controller => 'meetings', :action => 'show', :id => o.id}}
+
+  acts_as_activity_provider :timestamp => 'scheduled_on',
+                            :scope => includes(:project),
+                            :permission => nil
+end