Rails - May 2006 - Two-Dimensional Hashes through links?

I''m really hitting a wall here. My program has a search engine, returns
a list of results. I am using a two-dimensional hash to pass the form 
data back to my controller. (i.e. params[:job] => {:description => 
"xxx", :location => "xxx", company =>
"xxx"}) I use that Job object to
search my database, and then wait for user input.

Now when the search is returned if the user wants to sort the list I 
need to pass that two-dimensional hash back into my controller along 
with a sort criteria but I cannot seem to do this. I am using 
link_to_remote and it just kills any hash that is not 1 dimensional. I 
was told that GETs can only send 1 dimensional hashes so I set 
link_to_remote to send a POST request:

link_to_remote("mylink", :url => {:job => params[:job], :sort
=>
sort_choice}, :post => true}

According to WebBrick there is a POST request being sent, but my 
two-dimensional hash is still be killed. (turned into 1 dimensional 
string) Is there any way at all to send a two-dimensional hash through a 
link? Or is this a fundamental limitation of HTTP?

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

On 18-mei-2006, at 22:55, Brian Cardarella wrote:
> I''m really hitting a wall here. My program has a search engine,  
> returns
> a list of results. I am using a two-dimensional hash to pass the form
> data back to my controller. (i.e. params[:job] => {:description =>
> "xxx", :location => "xxx", company =>
"xxx"}) I use that Job object to
> search my database, and then wait for user input.
>
> Now when the search is returned if the user wants to sort the list I
> need to pass that two-dimensional hash back into my controller along
> with a sort criteria but I cannot seem to do this. I am using
> link_to_remote and it just kills any hash that is not 1 dimensional. I
> was told that GETs can only send 1 dimensional hashes so I set
> link_to_remote to send a POST request:
>
> link_to_remote("mylink", :url => {:job => params[:job],
:sort =>
> sort_choice}, :post => true}
>
> According to WebBrick there is a POST request being sent, but my
> two-dimensional hash is still be killed. (turned into 1 dimensional
> string) Is there any way at all to send a two-dimensional hash  
> through a
> link? Or is this a fundamental limitation of HTTP?
No, this is a little deficiency of ActionPack. If you care you can  
bug the core about the patch that makes it possible.

http://dev.rubyonrails.org/ticket/4947

--
Julian ''Julik'' Tarkhanov
please send all personal mail to
me at julik.nl

Julian ''Julik'' Tarkhanov wrote:
> On 18-mei-2006, at 22:55, Brian Cardarella wrote:
> 
>> link_to_remote and it just kills any hash that is not 1 dimensional. I
>> link? Or is this a fundamental limitation of HTTP?
> No, this is a little deficiency of ActionPack. If you care you can
> bug the core about the patch that makes it possible.
> 
> http://dev.rubyonrails.org/ticket/4947
> 
> --
> Julian ''Julik'' Tarkhanov
> please send all personal mail to
> me at julik.nl
Oh wow, thank-you very much. I''ll send the dev-team a note asking for 
the patch to be added to a future build.

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

I''m finding that if I need to pass around a complex hash the best
option
is to encode it like so:

@my_encoded_hash = Base64.encode64(Marshal.dump(my_complext_hash)).strip

this will give you your has encoded as a string value which you can pass 
  between your view and controller more easily.
To get back your original hash use something like:

@my_decoded_hash = Marshal.load(Base64.decode64(params[:conditions]))

Full credit for the above goes to Jamis Buck.

Cheers

Jonathan
----
http://www.agileevolved.com



Brian Cardarella wrote:
> I''m really hitting a wall here. My program has a search engine,
returns
> a list of results. I am using a two-dimensional hash to pass the form 
> data back to my controller. (i.e. params[:job] => {:description => 
> "xxx", :location => "xxx", company =>
"xxx"}) I use that Job object to
> search my database, and then wait for user input.
> 
> Now when the search is returned if the user wants to sort the list I 
> need to pass that two-dimensional hash back into my controller along 
> with a sort criteria but I cannot seem to do this. I am using 
> link_to_remote and it just kills any hash that is not 1 dimensional. I 
> was told that GETs can only send 1 dimensional hashes so I set 
> link_to_remote to send a POST request:
> 
> link_to_remote("mylink", :url => {:job => params[:job],
:sort =>
> sort_choice}, :post => true}
> 
> According to WebBrick there is a POST request being sent, but my 
> two-dimensional hash is still be killed. (turned into 1 dimensional 
> string) Is there any way at all to send a two-dimensional hash through a 
> link? Or is this a fundamental limitation of HTTP?
>