Module: SimpleMapper::XmlFormat::ClassMethods

Defined in:
lib/simple_mapper/formats/xml_format.rb

Instance Method Summary collapse

Instance Method Details

#from_xml(xml) ⇒ Object

This assumes a standard xml format:

<person attribute="">
  <another_att>value</another_att>
</person>

And for a collection of objects:

<people>
  <person attribute="">
    <another_att>value 1</another_att>
  </person>
  <person attribute="">
    <another_att>value 2</another_att>
  </person>
</people>



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# File 'lib/simple_mapper/formats/xml_format.rb', line 36

def from_xml(xml)
  doc = Serialize.hash_from_xml(xml)
  # doc could include a single 'model' element, or a 'models' wrapper around several.
  puts "Top-level XML key(s): #{doc.keys.inspect}" if @debug
  if doc.is_a?(Hash)
    # By specification the doc should have only ONE top-level element (key)
    key = doc.keys.first
    if doc[key] && doc[key].keys.uniq == [key.singularize] && doc[key][key.singularize].is_a?(Array)
      puts "Several objects returned under key '#{key}'/'#{key.singularize}':" if @debug
      doc[key][key.singularize].collect do |e|
        puts "Obj: #{e.inspect}" if @debug
        Object.module_eval("::#{key.singularize.camelize}", __FILE__, __LINE__).load(e)
      end
    elsif doc[key] # top-level must be single object
      Object.module_eval("::#{key.singularize.camelize}", __FILE__, __LINE__).load(doc[key])
    else
      nil
    end
  else # doc isn't a hash, probably nil
    doc
  end
end