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Ruby on rails 未定义的方法“输出缓冲区='；对于带有块的内容\标记_Ruby On Rails - Fatal编程技术网
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  • Ruby on rails 未定义的方法“输出缓冲区='；对于带有块的内容\标记

Ruby on rails 未定义的方法“输出缓冲区='；对于带有块的内容\标记

ruby-on-rails

Ruby on rails 未定义的方法“输出缓冲区='；对于带有块的内容\标记,ruby-on-rails,Ruby On Rails,在lib/my_lib.rb中 class MyLib include ActionView::Helpers::TagHelper def foo content_tag :div do "hello" end end end 给出 require 'lib/my_lib' ;MyLib.new.foo NoMethodError: undefined method `output_buffer=' for #<My

在lib/my_lib.rb中

class MyLib
    include ActionView::Helpers::TagHelper

    def foo
      content_tag :div do
         "hello"
       end
    end
end
给出

require 'lib/my_lib' ;MyLib.new.foo
NoMethodError: undefined method `output_buffer=' for #<MyLib:0x7f3209aaa450>
    from /var/lib/gems/1.8/gems/actionpack-3.0.5/lib/action_view/helpers/capture_helper.rb:175:in `with_output_buffer'
    from /var/lib/gems/1.8/gems/actionpack-3.0.5/lib/action_view/helpers/capture_helper.rb:40:in `capture'
    from /var/lib/gems/1.8/gems/actionpack-3.0.5/lib/action_view/helpers/tag_helper.rb:77:in `content_tag'
    from ./lib/my_lib.rb:6:in `foo'
    from (irb):1

需要'lib/my_lib'；MyLib.new.foo
NoMethodError:for的未定义方法“output\u buffer=”#
from/var/lib/gems/1.8/gems/actionpack-3.0.5/lib/action\u view/helpers/capture\u helper.rb:175:in'with\u output\u buffer'
from/var/lib/gems/1.8/gems/actionpack-3.0.5/lib/action\u view/helpers/capture\u helper.rb:40:in“capture”
from/var/lib/gems/1.8/gems/actionpack-3.0.5/lib/action\u view/helpers/tag\u helper.rb:77:in'content\u tag'
from./lib/my_lib.rb:6:in'foo'
来自（irb）：1
是否有特殊原因使您无法将此逻辑放入视图中

content_标记是为视图环境创建的，不打算从控制器或其他库中调用。您需要将MyLib类设置为视图

虽然我建议您重新思考，重新嗅一嗅代码和设计，使您达到了需要的程度，但您可以通过从ActionView:：Base中进行子类化来完成您想要的

class MyLib < ActionView::Base
  include ActionView::Helpers::TagHelper

  def foo
    content_tag :div do
      "hello"
    end
  end
end

class MyLib