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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
