class Career < ActiveRecord::Base
  # attr_accessible :title, :body
  has_many :career_faqs, :dependent => :destroy
  has_many :career_stages, :dependent => :destroy, :order => "career_stages.position ASC"
  acts_as_attachable

  scope :published, lambda{where(status: true)}

  # 章节数
  def subject_count
    count = 0
    self.career_stages.each do |stage|
      count += stage.subjects.count
    end
    count
  end

  # 实训数
  def shixun_count
    count = 0
    self.career_stages.each do |stage|
      stage.subjects.each do |subject|
        count += subject.shixuns.count
      end
    end
    count
  end

end