class TrendingProjectsFinder def execute(current_user, start_date = nil) start_date ||= Date.today - 1.month projects = projects_for(current_user) # Determine trending projects based on comments count # for period of time - ex. month projects.joins(:notes).where('notes.created_at > ?', start_date). select("projects.*, count(notes.id) as ncount"). group("projects.id").reorder("ncount DESC") end private def projects_for(current_user) ProjectsFinder.new.execute(current_user) end end