ruby-on-rails - 帮助程序中的 Rails Form block - 我如何包含 "Protect from forgery"

Question

我正在尝试为我的液体主题语言构建一个表单 block 。我的方法基于 this answer 。然而答案似乎不完整。

问题在于防伪和其他一些方法不可用。导致错误:

Liquid error: undefined method `protect_against_forgery?' for #

这是我的代码:

   class LiquidFormTag < Liquid::Block

        include ActionView::Context
        include ActionView::Helpers::FormHelper

        def initialize(tag_name, markup, tokens)

            super
        end

        def render(context)
            form_tag("#") do

                super
            end
        end
    end

    Liquid::Template.register_tag('liquid_form', LiquidFormTag)

有人知道我如何在此类中添加 protect_against_forgery 方法吗？

编辑:这是错误输出:

编辑2:

这是我的 Liquid 代码的相关部分:

{% ticket_form %}
    {% for offer in event.offers %}

        <div class="well well-sm">  
            <div class="row">
                <div class="col-xs-3 col-sm-5 col-md-6 col-lg-7">
                    <h5>{{offer.name}}</h5>
                </div>
                <div class="col-xs-9 col-sm-7 col-md-6 col-lg-5 pull-right">
                    <div class="input-group">
                        <span class="input-group-addon">{{offer.price}}</span>
                        <input type="email" class="form-control tickets-count" cols="2" id="exampleInputEmail1" placeholder="0">
                        <span class="input-group-btn">
                            <button type="button" class="btn btn-default"><i class="fa fa-plus"></i></button>
                            <button type="button" class="btn btn-default"><i class="fa fa-minus"></i></button>
                        </span>
                    </div>
                </div>
            </div>
        </div>

    {% endfor %}
{% endticket_form %}

Answer 1

我同意罗德里戈的观点，但很难确定将委托(delegate)给 Controller 的方法名称。

这就是为什么我更喜欢扩展 Liquid::Block 类并在响应时将缺少的方法委托(delegate)给 Controller 。

class LiquidFormTag < Liquid::Block
  include ActionView::Context
  include ActionView::Helpers::FormHelper

  attr_reader :controller

  def initialize(tag_name, markup, tokens)
    super
  end

  def render(context)
    @controller = context.registers[:controller]
    form_tag('#') do
      super(context).html_safe
    end
  end

end


Liquid::Block.class_eval do
  # This delegates missing - including private & protected - methods (like protect_against_forgery?) to controller.
  def method_missing(*args)
    begin
      if controller.respond_to?(args.first, true)
        controller.send(args.first)
      else
        super
      end
    rescue
      super
    end
  end
end