Module: MongoMapper::Plugins::Serialization::InstanceMethods

Defined in:
lib/mongo_mapper/plugins/serialization.rb

Instance Method Summary collapse

Instance Method Details

#as_json(options = {}) ⇒ Object 



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# File 'lib/mongo_mapper/plugins/serialization.rb', line 12

def as_json options={}
  options ||= {}
  unless options[:only]
    methods = [options.delete(:methods)].flatten.compact
    methods << :id
    options[:methods] = methods.uniq
  end

  except = [options.delete(:except)].flatten.compact
  except << :_id
  options[:except] = except

  # Direct rip from Rails 3 ActiveModel Serialization (#serializable_hash)
  hash = begin
    options[:only]   = Array.wrap(options[:only]).map { |n| n.to_s }
    options[:except] = Array.wrap(options[:except]).map { |n| n.to_s }

    attribute_names = attributes.keys.sort
    if options[:only].any?
      attribute_names &= options[:only]
    elsif options[:except].any?
      attribute_names -= options[:except]
    end

    method_names = Array.wrap(options[:methods]).inject([]) do |methods, name|
      methods << name if respond_to?(name.to_s)
      methods
    end

    (attribute_names + method_names).inject({}) { |hash, name|
      hash[name] = send(name)
      hash
    }
  end
  # End rip

  options.delete(:only) if options[:only].nil? or options[:only].empty?

  hash.each do |key, value|
    if value.is_a?(Array)
      hash[key] = value.map do |item|
        item.respond_to?(:as_json) ? item.as_json(options) : item
      end
    elsif value.is_a? BSON::ObjectId
      hash[key] = value.to_s
    elsif value.respond_to?(:as_json)
      hash[key] = value.as_json(options)
    end
  end

  # Replicate Rails 3 naming - and also bin anytihng after : for use in our dynamic classes from unit tests
  hash = { ActiveSupport::Inflector.underscore(ActiveSupport::Inflector.demodulize(self.class.name)).gsub(/:.*/,'') => hash } if include_root_in_json
  hash
end