Module: FHIR::InstanceXml

Included in:
R4::Xml, R4B::Xml, R5::Xml, Xml
Defined in:
lib/fhir_models/bootstrap/xml.rb

Instance Method Summary collapse

Instance Method Details

#hash_to_xml_node(name, hash, doc) ⇒ Object

Hash keys are ordered in Ruby 1.9 and later, so we can rely on their order to be the correct order for the XML serialization.



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# File 'lib/fhir_models/bootstrap/xml.rb', line 90

def hash_to_xml_node(name, hash, doc)
  node = Nokogiri::XML::Node.new(name, doc)

  # if hash contains resourceType
  # create a child node with the name==resourceType
  # fill that, and place the child under the above `node`
  if hash['resourceType'].is_a?(String) && name != 'instance'
    child_name = hash['resourceType']
    hash.delete('resourceType')
    child = hash_to_xml_node(child_name, hash, doc)
    node.add_child(child)
    return node
  end

  hash.each do |key, value|
    next if ['extension', 'modifierExtension'].include?(name) && key == 'url'
    next if key == 'id' && !versioned_fhir_module::RESOURCES.include?(name)

    case value
    when Hash
      node.add_child(hash_to_xml_node(key, value, doc))
    when Array
      value.each do |v|
        if v.is_a?(Hash)
          node.add_child(hash_to_xml_node(key, v, doc))
        else
          child = Nokogiri::XML::Node.new(key, doc)
          child.set_attribute('value', v)
          node.add_child(child)
        end
      end
    else
      child = Nokogiri::XML::Node.new(key, doc)
      if name == 'text' && key == 'div'
        child.set_attribute('xmlns', 'http://www.w3.org/1999/xhtml')
        html = value.strip
        if html.start_with?('<div') && html.end_with?('</div>')
          html = html[html.index('>') + 1..-7]
        end
        child.inner_html = html
      else
        child.set_attribute('value', value)
      end
      node.add_child(child)
    end
  end
  node.set_attribute('url', hash['url']) if ['extension', 'modifierExtension'].include?(name)
  node.set_attribute('id', hash['id']) if hash['id'] && !versioned_fhir_module::RESOURCES.include?(name)
  node
end

#to_xml ⇒ Object

This module includes methods to serialize or deserialize FHIR resources to and from XML.



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# File 'lib/fhir_models/bootstrap/xml.rb', line 78

def to_xml
  hash = to_hash
  hash.delete('resourceType')
  doc = Nokogiri::XML::Document.new
  doc.encoding = 'utf-8'
  doc.root = hash_to_xml_node(resourceType, hash, doc)
  doc.root.default_namespace = 'http://hl7.org/fhir'
  doc.to_xml
end