From: Michael Guterl <mguterl@...>
Date: 2008-09-07T12:30:24+09:00
Subject: Re: json for extjs (without rails)

On Sat, Sep 6, 2008 at 11:06 PM, Gurpal 2000 <gurpal@gmx.com> wrote:
> Ara Howard wrote:
>> On Sep 6, 2008, at 6:52 PM, Gurpal 2000 wrote:
>>
>>> class car
>>> into
>>> an EXTJS grid.
>>>
>>> Thanks
>>
>>
>> gem install json
>> ri json
>>
>> a @ http://codeforpeople.com/
>
> an example would actually be helpful. i already looked at the rdoc, i'm
> a ruby beginner. No example anywhere on google either... There seem to
> be examples to parse and unparse but those are simple one liners with no
> solid object conversions.
>
There's an example of serializing a custom class (Range) on
http://json.rubyforge.org/

Here's something based off of that:
require 'rubygems'
require 'json'

class Car
  attr_reader :make, :color

  def initialize(make, color)
    @make, @color = make, color
  end

  def to_json(*a)
    {
      'json_class' => self.class.name,
      'data' => {
        :make => @make,
        :color => @color
      }
    }.to_json(*a)
  end

  def self.json_create(o)
    new(*o['data'].values)
  end
end

car = JSON.parse(Car.new('VW', 'White').to_json)
puts car.make
puts car.color
puts car.to_json