dkamioka

 json.root do
 json.array! @root_array do |json, item|
   json.id item[:id]
   json.array!(item.nested_array) do |json, nested_item|
     json.nid nested_item.nid
   end
 end
end

dkamioka

[vagrant|3.2.14#1.9.3] /vagrant feature-cucumber
$ gem install growl
/usr/local/rvm/rubies/ruby-1.9.3-p448/lib/ruby/site_ruby/1.9.1/rubygems/dependency.rb:247:in `to_specs': Could not find rubygems-bundler (>= 0) amongst [awesome_print-1.1.0, coderay-1.0.9, method_source-0.8.1, pry-0.9.12, pry-meta-0.0.5, pry-nav-0.2.3, pry-remote-0.1.7, slop-3.4.4] (Gem::LoadError)
  from /usr/local/rvm/rubies/ruby-1.9.3-p448/lib/ruby/site_ruby/1.9.1/rubygems/dependency.rb:256:in `to_spec'
	from /usr/local/rvm/rubies/ruby-1.9.3-p448/lib/ruby/site_ruby/1.9.1/rubygems/specification.rb:436:in `find_by_name'
	from /usr/local/rvm/gems/ruby-1.9.3-p448@global/gems/rubygems-bundler-1.2.2/lib/rubygems-bundler/wrapper.rb:19:in `install'
	from /usr/local/rvm/gems/ruby-1.9.3-p448@global/gems/rubygems-bundler-1.2.2/lib/rubygems_plugin.rb:28:in `block in <top (required)>'
	from /usr/local/rvm/rubies/ruby-1.9.3-p448/lib/ruby/site_ruby/1.9.1/rubygems/installer.rb:162:in `call'
	from /usr/local/rvm/rubies/ruby-1.9.3-p448/lib/ruby/site_ruby/1