Rails - May 2010 - cookie has key/value pairs and lost order after JSON decode

If a cookie has several items, and is encoded as JSON text as the value
of the cookie, the order is actually apparent in the cookie''s text

But if JSON.decode is used:

  ActiveSupport::JSON.decode(cookies[''item_list''])

and the result is actually in a hash, then the ordering is lost...

Is it true that if the original JSON object has an array of hashes (1
key and 1 value), then the order can be preserved?

But what if the original JSON object was a hash of key / value pairs,
and is already in many users'' cookies, then is there a way to somehow
keep the order?
-- 
Posted via http://www.ruby-forum.com/.

-- 
You received this message because you are subscribed to the Google Groups
"Ruby on Rails: Talk" group.
To post to this group, send email to
rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org
To unsubscribe from this group, send email to
rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org
For more options, visit this group at
http://groups.google.com/group/rubyonrails-talk?hl=en.

>  ActiveSupport::JSON.decode(cookies[''item_list''])
>
> and the result is actually in a hash, then the ordering is lost...
>
> Is it true that if the original JSON object has an array of hashes (1
> key and 1 value), then the order can be preserved?
>
> But what if the original JSON object was a hash of key / value pairs,
> and is already in many users'' cookies, then is there a way to
somehow
> keep the order?
No, Ruby Hash objects are specifically unordered.  You could create an
ActiveSupport::OrderedHash instead of a Hash and store that in the
cookie instead if you need to maintain ordering?  Or Array support
ordering so an array would work.

Cheers,


Andy

-- 
You received this message because you are subscribed to the Google Groups
"Ruby on Rails: Talk" group.
To post to this group, send email to
rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org
To unsubscribe from this group, send email to
rubyonrails-talk+unsubscribe@googlegroups.com.
For more options, visit this group at
http://groups.google.com/group/rubyonrails-talk?hl=en.