Rails xml deserialization issues

rubyonrails-talk
1

When I post this XML to my controller:

<?xml version="1.0" encoding="utf-8"?>      <transcoder_queue xmlns:xsi="http://www.w3.org/2001/XMLSchema- instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema&quot;&gt;      <id>0</id>      <campaign_id>1</campaign_id>      <created_at>0001-01-01T00:00:00</created_at>      <updated_at>0001-01-01T00:00:00</updated_at> </transcoder_queue>

it is deserialized like thus;

Processing TranscoderQueueController#create (for 192.168.1.107 at 2007-10-10 16:32:49) [POST]   Session ID: d2c14f967f10c53f8b90b5deb19b34ff   Parameters: {"action"=>"create", "controller"=>"transcoder_queue", "transcoder_queue"=>{"updated_at"=>"0001-01-01T00:00:00", "campaign_id"=>"5", "xmlns:xsd"=>"http://www.w3.org/2001/XMLSchema&quot;, "id"=>"0", "xmlns:xsi"=>"http://www.w3.org/2001/XMLSchema-instance&quot;, "created_at"=>"0001-01-01T00:00:00"}}

Notice how "xmlns:xsd" and ""xmlns:xsi" are treated as attributes of the TranscoderQueue object rather then ignored as xml specific data.

Anyways, since we have 2 unknown attributes the @transcoder_queue = TranscoderQueue.new(params[:transcoder_queue]) fails...

Why would rails do this?