如何使用. XML从XMLBuilder生成XML。施工文件?

I have started using xml builder templates for most of my model. I need to find a generic way to build XML outside of a render which uses the .xml.builder template instead of the generic .to_xml method provided in the model

我已经开始在我的大部分模型中使用xml构建器模板。我需要找到一种通用的方法，在使用. XML的呈现之外构建XML。构建器模板，而不是模型中提供的通用的.to_xml方法

I gather that I will have to override the default to_xml (or add a to_my_xml), but I am unable to see how to get XMLBuilder to use my .builder files.

我认为我必须重写默认的to_xml(或者添加一个to_my_xml)，但是我无法看到如何让XMLBuilder使用我的.builder文件。

Any ideas?

什么好主意吗?

3 个解决方案

#1

Add a respond_to block in your controller so that the appropriate template is rendered according to the requested format. For example:

在控制器中添加respond_to块，以便根据请求的格式呈现适当的模板。例如:

def show
  ...
  respond_to do |format|
    format.html # renders show.html.erb
    format.xml  # renders show.xml.builder
  end
end

#2

If you are looking for how to create xml using builder then this is how you can do it

如果您正在寻找如何使用builder创建xml，那么这就是您可以做到的

require 'rubygems'
require 'builder'
builder = Builder::XmlMarkup.new(:indent=>2)
builder.instruct! :xml, :version=>"1.0", :encoding=>"UTF-8"
builder.my_elements do |e|
  builder.myitem {|element| element.my_element_name('element_value')}
end

#=>

<?xml version="1.0" encoding="UTF-8"?>
<my_elements>
  <myitem>
    <my_element_name>element_value</my_element_name>
  </myitem>
</my_elements>

#3

Hi I just had to solve this problem. Here is how I got it to work, comments inline ...

嗨，我刚刚解决了这个问题。这是我如何让它工作，评论内联……

class PostsController < ApplicationController
  # this must be included to use tag helpers like cdata_block, etc ...
  include :Helpers::TagHelper

  def preview_xml
    @post = Post.find(params[:id])

    # You must set up a instance variable named 'xml'
    xml = ::Builder::XmlMarkup.new(indent: 2)

    builder_file = File.read(::Rails.root.to_s + '/app/views/posts/show.xml.builder')

    require 'builder'

    # instance_eval evaluates the file within the context of the current instance -- so the
    # xml variable we just set will be accessable within the builder_file
    instance_eval builder_file

    @tag_xml = xml.target!
  end

end

#1