educoder/app/controllers/iframes_controller.rb

class IframesController < ApplicationController
  layout false
  skip_before_filter :verify_authenticity_token, :only => [:html_content]

  def show
    render :layout => false
  end

  # 渲染实训代码
  def html_content
    @contents = params[:contents] || ""
    respond_to do |format|
      format.js
      format.html
    end
  end
end