Sending raw XML using Savon 2

The call should look like this:

client.call(:some_op, xml: "<elem />")

Or if you just want to set one or multiple namespaces then create a client as follows (without WSDL):

client = Savon.client(
  :endpoint => 'http://www.example.com',
  :namespace => 'urn:core.example.com',
  :namespaces => { 'ns1' => 'http://v1.example.com',
                   'ns2' => 'http://v2.example.com' },
  :log => true,
  :log_level => :debug,
  :pretty_print_xml => true
)

The namespaces are a Hash parameter.