将随机ID号放在create上的关联表中

Question

我正在尝试在我的关联表中放置一个随机ID号。我该怎么办？

def create
  @rand = rand(1...10)
  @player = Player.new(params[:player])
  @player.result_id = @rand
  if @player.save
    render :action => "new"
  else
    render :action => "new"
  end        
end

Answer 1

只需选择一个随机结果ID：

@player.result_id = Result.offset(rand(Result.count)).select('id').first.id

选择随机记录，请参阅 Rails 3: Get Random Record