Rails - Apr 2006 - how to pass a hash as a parameter in link_to_remote

When using link_to_remote, I''d like to pass along some auxiliary data
in
the request.  It''s a hash of dynamic data that can change with each 
request.

But I get an error when rails trying to "stringify" the hash.

For the regular link_to, it works because it turns the hash into a 
regular GET-like query string.

I''m expecting to be able to get my hash as

params[:myhash] # => my hash data

inside my controller action, but this only works for link_to, not 
link_to_remote.

My workaround was to write my own helper method to convert the hash into 
a querystring-looking string, and then to de-stringify inside the 
controller.

But I feel like I must be reinventing the wheel.  What''s the correct
way
to pass a hash to my controller in an ajax call?

Thanks!
Jeff


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Jeff,
     I recently saw the same sort of discussion on the Utah Ruby User Group
list.  Here''s a link for the start of the tread.  Just follow it
through and
hopefully you can find your answer.

http://comox.textdrive.com/pipermail/talk/2006-April/000965.html

Rob

On 4/19/06, Jeff Cohen <cohen.jeff@gmail.com>
wrote:
>
> When using link_to_remote, I''d like to pass along some auxiliary
data in
> the request.  It''s a hash of dynamic data that can change with
each
> request.
>
> But I get an error when rails trying to "stringify" the hash.
>
> For the regular link_to, it works because it turns the hash into a
> regular GET-like query string.
>
> I''m expecting to be able to get my hash as
>
> params[:myhash] # => my hash data
>
> inside my controller action, but this only works for link_to, not
> link_to_remote.
>
> My workaround was to write my own helper method to convert the hash into
> a querystring-looking string, and then to de-stringify inside the
> controller.
>
> But I feel like I must be reinventing the wheel.  What''s the
correct way
> to pass a hash to my controller in an ajax call?
>
> Thanks!
> Jeff
>
>
> --
> Posted via http://www.ruby-forum.com/.
> _______________________________________________
> Rails mailing list
> Rails@lists.rubyonrails.org
> http://lists.rubyonrails.org/mailman/listinfo/rails
>


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Thanks for the link Rob.  That''s exactly what I needed.

For those interested, the best answer seems to be (from Jamis) to base64 
your hash, and decode it later.

   string = Base64.encode64(Marshal.dump(hash)).strip
   hash   = Marshal.load(Base64.decode64(string))

Brian
softiesonrails.com

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