提取值并格式化 XML feed Rails3

Question

我从外部站点获得了以下提要，我已通过 httparty 将其引入到我的 Rails3.2 应用程序中。

看来我有一个迟钝的时刻，不知道到底如何格式化/样式它。我需要使用 nokogiri 还是更简单？

["radcheck", [{"attribute_name"=>"User-Password", "batch_user_id"=>nil, "id"=>22, "op"=>":=", "radcheck_serial"=>nil, "raduser_id"=>nil, "username"=>"simon", "value"=>"pass"}, {"attribute_name"=>"User-Password", "batch_user_id"=>nil, "id"=>23, "op"=>":=", "radcheck_serial"=>nil, "raduser_id"=>nil, "username"=>"silver", "value"=>"rain"}.....

Answer 1

给定您的示例数据：

feed = ["radcheck", [
  {"attribute_name"=>"User-Password", "batch_user_id"=>nil, "id"=>22, "op"=>":=", "radcheck_serial"=>nil, "raduser_id"=>nil, "username"=>"simon", "value"=>"pass"},
  {"attribute_name"=>"User-Password", "batch_user_id"=>nil, "id"=>23, "op"=>":=", "radcheck_serial"=>nil, "raduser_id"=>nil, "username"=>"silver", "value"=>"rain"}
]]

if feed.is_a? Array && feed.size >= 2
  radcheck = feed.first  # do you need this first element?
  data = feed[1]
  # now you have an array in data, and can loop over each hash
  Array(data).each do |elem|
    puts elem["id"] # and so on
  end
end

这在我的控制台中有效，因此您应该能够针对您的模板机制进行调整。

Answer 2

嗯，我认为你所要做的就是循环第二个元素，它是一个哈希数组：

在控制器中：

@feed = ... # Retrieve your feed with httparty or other

在视图中：

<p>
First element: <%= @feed[0] #="radcheck", don't know the meaning of this %>
</p>
<p>
Attributes:
<ul>
<% @feed[1].each do |item| %>
  <li>
  Name: <%= item.attribute_name %><br />
  Batch User ID: <%= item.batch_user_id %><br />
  ID: <%= item.id %><br />
  OP: <%= item.op %><br />
  ... and so on ...
  </li>
<% end %>
</ul>
</p>