Method: MongoDoc::Attributes::ClassMethods#has_one

Defined in:
lib/mongodoc/attributes.rb

#has_one(*args) ⇒ Object 



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# File 'lib/mongodoc/attributes.rb', line 51

def has_one(*args)
  options = args.extract_options!
  assoc_class = if class_name = options.delete(:class_name)
    self.class_from_name(class_name)
  end

  args.each do |name|
    _associations << name unless _associations.include?(name)

    attr_reader name

    define_method("#{name}=") do |value|
      association = instance_variable_get("@#{name}")
      unless association
        association = Associations::DocumentProxy.new(:root => _root || self, :parent => self, :assoc_name => name, :assoc_class => assoc_class || self.class.class_from_name(name))
        instance_variable_set("@#{name}", association)
      end
      association.document = value
    end

    validates_embedded name, :if => Proc.new { !send(name).nil? }
  end
end