Ruby on rails ActionView:：Template:：Error（未定义的方法`remote\u image\u url

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模型

classgamepic

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