def latest_workshop_completion workshop_id
  @questionnaire = WorkshopRkaQuestionnaire.find(params[:workshop_rka_questionnaire_id], :order => "created_at DESC")
  @questionnaire.rka_completions.find_by_stay_id(self.id, :order => "created_at DESC")
end

def latest_technical_completion
  @questionnaire = TechnicalRkaQuestionnaire.first(:order => "created_at DESC")
  @questionnaire.rka_completions.find_by_stay_id(self.id, :order => "created_at DESC")
end

def latest_social_completion
  @questionnaire = SocialRkaQuestionnaire.first(:order => "created_at DESC")
  @questionnaire.rka_completions.find_by_stay_id(self.id, :order => "created_at DESC")
#  [@completion, ]
end

def get_latest_type_rka_completion object, options=nil
  ...
end