ActionView :: Template :: Error（未定义的方法`remote_image_url

Question

获取此错误

在此页面

    ＆lt;％= f.label：remote_image_url，＆＃34;或图片网址＆＃34; ％GT;
    ＆lt;％= f.text_field：remote_image_url％＆gt;   

模型

class Gamepic < ActiveRecord::Base
  belongs_to :gallery
  mount_uploader :gamepic, GamepicUploader

  private 
    def Gamepic_params
      params.require(:gamepic).permit(:gameid, :gamename, :gamepic, :remote_image_url)
  end
end