From: Gurpal 2000 <gurpal@...>
Date: 2008-09-14T19:19:09+09:00
Subject: Re: json for extjs (without rails)

Ara Howard wrote:
> On Sep 6, 2008, at 9:06 PM, Gurpal 2000 wrote:
> 
>>> gem install json
>>
>> 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/

I have another question. If I do something like this:

mydata = [ C.new(4, 2).to_json, C.new(1, 3).to_json, C.new(5, 6).to_json 
]
myhash = { 'data' => mydata }
puts myhash.to_json

I see that the output will double escape the values (they are actually 
strings with all sorts of characters in my code).

I guess what i need is the to_json on the hash to call to_json in each 
element of the array. What's the ruby-esque way to do this? I could do 
it in long code but doesn't feel right. This should easy right?

Thanks
-- 
Posted via http://www.ruby-forum.com/.