socialforge/app/helpers/exercise_helper.rb

# encoding: utf-8
module ExerciseHelper

  #判断用户是否已经提交了问卷
  def has_commit_exercise?(exercise_id, user_id)
    pu = PollUser.find_by_poll_id_and_user_id(excercise_id, user_id)
    if pu.nil?
      false
    else
      true
    end
  end

end