class ChallengeChoose < ActiveRecord::Base
  # attr_accessible :title, :body
  # category 1 单选， 2，多选
  # standard_answer 正确答案 answer： 答题的思路, 取标准答案的时候如果该项不为空则优先选择该项
  default_scope :order => 'position'
  belongs_to :challenge
  has_many :challenge_tags, :dependent => :destroy
  has_many :challenge_questions, :dependent => :destroy
  has_one  :choose_outputs, :dependent => :destroy
  #has_many :outputs, :dependent => :destroy

  validates_presence_of :subject

  # 判断当前用户是否答题
  def current_choose_outputs
    ChooseOutputs.where(:challenge_choose_id => self.id, :user_id => User.current.id).first
  end

end