From: "ara.t.howard" <ara.t.howard@...>
Date: 2008-09-07T13:18:13+09:00
Subject: Re: json for extjs (without rails)


On Sep 6, 2008, at 9:06 PM, Gurpal 2000 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.
>
> thanks
> -- 
> Posted via http://www.ruby-forum.com/.
>


cfp:~ > cat a.rb

# i prefer the pure-ruby version of json
#
   require 'rubygems'
   require 'json'  # gem install json_pure  OR gem install json


# it's easiest to just use mixtures of hash, arrays, strings, and  
numbers
# because this translates 1-1 with javascript
#
   hash = { 'key' => 42 }

   hash2 = { 'another key' => 42.0 }

   data = [
     hash, hash2
   ]

   puts data.to_json
   puts


# even if you defined your own classes i personally prefer to  
translate to
# 'simple' javascript structures
#
   class C
     def initialize a, b
       @a, @b = a, b
     end

     def to_json
       { 'a' => @a, 'b' => @b }.to_json
     end
   end

   puts C.new(4, 2).to_json




cfp:~ > ruby a.rb
[{"key":42},{"another key":42.0}]

{"a":4,"b":2}


a @ http://codeforpeople.com/
--
we can deny everything, except that we have the possibility of being  
better. simply reflect on that.
h.h. the 14th dalai lama