Contents

module MongoDoc
  class ParentProxy
    attr_reader :assoc_name, :_parent

    def initialize(parent, assoc_name)
      raise ArgumentError.new('ParentProxy requires a parent') if parent.nil?
      raise ArgumentError.new('ParentProxy require an association name') if assoc_name.blank?
      @_parent = parent
      @assoc_name = assoc_name
    end

    def path_to_root(attrs)
      assoc_attrs = attrs.inject({}) do |assoc_attrs, (key, value)|
        assoc_attrs["#{assoc_name}.#{key}"] = value
        assoc_attrs
      end
      _parent.path_to_root(assoc_attrs)
    end

    private

    def method_missing(method, *args)
      unless @_parent.respond_to?(method)
        message = "undefined method `#{method.to_s}' for proxied \"#{@_parent}\":#{@_parent.class.to_s}"
        raise NoMethodError, message
      end

      if block_given?
        @_parent.send(method, *args)  { |*block_args| yield(*block_args) }
      else
        @_parent.send(method, *args)
      end
    end
  end
end

Version data entries

3 entries across 3 versions & 1 rubygems

Version	Path
mongodoc-0.1.2	lib/mongodoc/parent_proxy.rb
mongodoc-0.1.1	lib/mongodoc/parent_proxy.rb
mongodoc-0.1.0	lib/mongodoc/parent_proxy.rb