Rails XML parsing

Question

Can anybody tell me how to parse this on rails.

<?xml version="1.0" encoding="utf-8"?>
<message>
  <param>
    <name>messageType</name>
    <value>SMS</value>
  </param>
  <param>
    <name>id</name>
    <value>xxxxxxxxxxxxxx</value>
  </param>
  <param>
    <name>source</name>
    <value>xxxxxxxxxxx</value>
  </param>
  <param>
    <name>target</name>
    <value>xxxxxxxxxxxxx</value>
  </param>
  <param>
    <name>msg</name>
    <value>xxxxxxxxxxxxx</value>
  </param>
  <param>
    <name>udh</name>
    <value></value>
  </param>
</message>

I have no control on this xml, but I hope I can make the parameter looks like this before saving to my database

message"=>{"msg"=>"sampler", "id"=>"1", "target"=>"23123", "source"=>"312321312"}

here is the parameter I received when it access my method

message"=>{"param"=>[{"name"=>"id", "value"=>"2373084120100804002252"}, {"name"=>"messageType", "value"=>"SMS"}, {"name"=>"target", "value"=>"23730841"}, {"name"=>"source", "value"=>"09156490046"}, {"name"=>"msg", "value"=>"Hello world via iPhone"}, {"name"=>"udh", "value"=>nil}]}

Ulysse BN · Accepted Answer · 2019-06-20 08:41:12Z

68

There are a lot of Ruby XML parsing libraries. However, if your XML is small, you can use the ActiveSupport Hash extension .from_xml:

Hash.from_xml(x)["message"]["param"].inject({}) do |result, elem| 
  result[elem["name"]] = elem["value"] 
  result 
end
# => {"msg"=>"xxxxxxxxxxxxx", "messageType"=>"SMS", "udh"=>nil, "id"=>"xxxxxxxxxxxxxx", "target"=>"xxxxxxxxxxxxx", "source"=>"xxxxxxxxxxx"}

edited Jun 20, 2019 at 8:41

Ulysse BN

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answered Aug 4, 2010 at 8:40

Vlad Zloteanu

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2 Comments

Budgie Over a year ago

oh dude can you help me, what if the input is from @message = Message.new(params[:message]).. I don't know how to insert it on the X .. it gives me a NIL result I'm using this but it doesnt work mobi = (params[:message]).to_xml

Budgie Over a year ago

how to make it work from this code :D @message = Message.new(params[:message]) respond_to do |format| if @message.save format.html { redirect_to(@message, :notice => 'Message was successfully created.') } format.xml { render :xml => @message, :status => :created, :location => @message } else format.html { render :action => "new" } format.xml { render :xml => @message.errors, :status => :unprocessable_entity } end end end

Shripad Krishna · Accepted Answer · 2010-08-04 09:01:47Z

17

You should use Nokogiri for parsing xml. Its pretty fast.

answered Aug 4, 2010 at 9:01

Shripad Krishna

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Comments

Kevin Sylvestre · Accepted Answer · 2010-08-04 08:44:10Z

2

Also, try checking out REXML for more complex problems.

answered Aug 4, 2010 at 8:44

Kevin Sylvestre

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