ruby-on-rails - 如何删除 ActiveSupport 的 from/to xml 中的数组标签？

Question

require 'rubygems'
require 'active_support/core_ext'

items = Hash.from_xml('<inventory><item><name>One</name></item><item><name>Two</name></item></inventory>')
print items.to_xml()

输出:

<?xml version="1.0" encoding="UTF-8"?>
<hash>
  <inventory>
    <item type="array">
      <item>
        <name>One</name>
      </item>
      <item>
        <name>Two</name>
      </item>
    </item>
  </inventory>
</hash>

我想要的是(<item type="array">标签被杀死):

<?xml version="1.0" encoding="UTF-8"?>
<hash>
  <inventory>
    <item>
      <name>One</name>
    </item>
    <item>
      <name>Two</name>
    </item>
</hash>

怎么做？

更新，添加skip_types选项没有多大帮助:

<?xml version="1.0" encoding="UTF-8"?>
<hash>
  <inventory>
    <item>
      <item>
        <name>One</name>
      </item>
      <item>
        <name>Two</name>
      </item>
    </item>
  </inventory>
</hash>

Answer 1

您可以使用 XmlSimple gem 实现所需的行为:

gem install xml-simple

然后

require 'xmlsimple'

xml = '<inventory><item><name>One</name></item><item><name>Two</name></item></inventory>'

items = XmlSimple.xml_in(xml, KeepRoot: true)
#=> {"inventory"=>[{"item"=>[{"name"=>["One"]}, {"name"=>["Two"]}]}]}

puts XmlSimple.xml_out(items, KeepRoot: true)
# <inventory>
#   <item>
#     <name>One</name>
#   </item>
#   <item>
#     <name>Two</name>
#   </item>
# </inventory>