class EnableCalendarAndGanttModulesWhereAppropriate < ActiveRecord::Migration[4.2] def self.up EnabledModule.where(:name => 'issue_tracking').each do |e| EnabledModule.create(:name => 'calendar', :project_id => e.project_id) EnabledModule.create(:name => 'gantt', :project_id => e.project_id) end end def self.down EnabledModule.where("name = 'calendar' OR name = 'gantt'").delete_all end end