Sets the model attributes from an XML string. Returns self.

  class Person
    include ActiveModel::Serializers::Xml

    attr_accessor :name, :age, :awesome

    def attributes=(hash)
      hash.each do |key, value|
        instance_variable_set("@#{key}", value)
      end
    end

    def attributes
      instance_values
    end
  end

  xml = { name: 'bob', age: 22, awesome:true }.to_xml
  person = Person.new
  person.from_xml(xml) # => #<Person:0x007fec5e3b3c40 @age=22, @awesome=true, @name="bob">
  person.name          # => "bob"
  person.age           # => 22
  person.awesome       # => true

Returns XML representing the model. Configuration can be passed through options.

Without any options, the returned XML string will include all the model‘s attributes.

  user = User.find(1)
  user.to_xml

  <?xml version="1.0" encoding="UTF-8"?>
  <user>
    <id type="integer">1</id>
    <name>David</name>
    <age type="integer">16</age>
    <created-at type="dateTime">2011-01-30T22:29:23Z</created-at>
  </user>

The :only and :except options can be used to limit the attributes included, and work similar to the attributes method.

To include the result of some method calls on the model use :methods.

To include associations use :include.

For further documentation, see ActiveRecord::Serialization#to_xml