From: Michael Guterl <mguterl@...>
Date: 2008-09-07T13:26:38+09:00
Subject: Re: json for extjs (without rails)

On Sat, Sep 6, 2008 at 11:36 PM, Michael Guterl <mguterl@gmail.com> wrote:
> 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)
I just realized this code is flawed due to the nature of unordered
hashes in ruby 1.8, but you get the idea...

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