containerFormatsController中的noMethodError为<containerFormat:0x450f560创建未定义的方法“yuvstreams”>

我收到这个错误,我不知道发生了什么,前几天它工作得很好,但现在不工作了。这是代码:

@containerformat = Containerformat.new(params[:containerformat])

if @containerformat.containerFmt == 'TS'
  @containerformat = Containerformat.new(params[:containerformat])
  @transportstream =
    @containerformat.transportstreams.build(params[:transportstream])
  @transportstream.save
  @program = @transportstream.programs.build(params[:program])
  @program.save
  @user = @containerformat.users.build(params[:user])
  @user.save

  if params[:videoCodec_id]!= nil
    @stream = @program.streams.build(params[:stream])
    @stream.videocodec = Videocodec.find(@stream.videoCodec_id)
    @stream.save
  end
  if params[:audioCodec_id]!= nil
    @stream = @program.streams.build(params[:stream])
    @stream.audiocodec = Audiocodec.find(@stream.audioCodec_id)
    @stream.save
  end

end

if @containerformat.containerFmt == 'PS'
  @programstream =
    @containerformat.programstreams.build(params[:programstream])
  @subtitle = @programstream.subtitles.build(params[:subtitle])
  @subtitle.save
  @programstream.save
  @stream = @programstream.streams.build(params[:stream])
  @user = @containerformat.users.build(params[:user])
  @user.save

  if params[:videoCodec_id]!= nil
    @stream = @programstream.streams.build(params[:stream])
    @stream.videocodec = Videocodec.find(@stream.videoCodec_id)
    @stream.save
  end
  if params[:audioCodec_id]!= nil
    @stream = @programstream.streams.build(params[:stream])
    @stream.audiocodec = Audiocodec.find(@stream.audioCodec_id)
    @stream.save
  end

end

if @containerformat.containerFmt == 'YUV'
  @yuvstream = @containerformat.yuvstreams.build(params[:avistream])
  #@subtitle = @yuvstream.subtitles.build(params[:subtitle])
  #@subtitle.save
  @yuvstream.save
  @stream = @yuvstream.streams.build(params[:stream])
  @user = @containerformat.users.build(params[:user])
  @user.save

  if params[:videoCodec_id]!= nil
    #@stream = @programstream.streams.build(params[:stream])
    #@stream.videocodec = Videocodec.find(@stream.videoCodec_id)
    #@stream.save
  end
  if params[:audioCodec_id]!= nil
    #@stream = @programstream.streams.build(params[:stream])
    #@stream.audiocodec = Audiocodec.find(@stream.audioCodec_id)
    #@stream.save
  end

end


if @containerformat.containerFmt == 'AVI'
  @avistream = @containerformat.avistreams.build(params[:avistream])
  @avistream.save
  @stream = @avistream.streams.build(params[:stream])
  @user = @containerformat.users.build(params[:user])
  @user.save

  if params[:videoCodec_id]!= nil
    @stream = @avistream.streams.build(params[:stream])
    @stream.videocodec = Videocodec.find(@stream.videoCodec_id)
    @stream.save
  end
  if params[:audioCodec_id]!= nil
    @stream = @avistream.streams.build(params[:stream])
    @stream.audiocodec = Audiocodec.find(@stream.audioCodec_id)
    @stream.save
  end
end

我把yuvstreams作为数据库中的表,就像其他表avisteams、programstreams表一样。