Rails - Nov 2007 - xml to hash/array and back to xml again with xml-simple?

Im trying to create an xmlrpc service. Rails by default uses xml_simple
to parse incoming raw xml data into a hash.

The problem is, that if I start out with a hash like this:

hash = {:books => [{:id=>4,:key=>3}, {:id=>644, :key=>54}]} and
convert
it to xml via to_xml, when I read it back in, it ends up doing something
like:


result_hash = {:books => {"book" => [{...},{...}}]}

so I end up accessing the books array with
hash["books"]["book"]

Has anyone experienced this before?
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Aryk Grosz wrote:
> Im trying to create an xmlrpc service. Rails by default uses xml_simple
> to parse incoming raw xml data into a hash.
> 
> The problem is, that if I start out with a hash like this:
> 
> hash = {:books => [{:id=>4,:key=>3}, {:id=>644, :key=>54}]}
and convert
> it to xml via to_xml, when I read it back in, it ends up doing something
> like:
> 
> 
> result_hash = {:books => {"book" => [{...},{...}}]}
> 
> so I end up accessing the books array with
hash["books"]["book"]
> 
> Has anyone experienced this before?
Yes.  Rails does some extra post-processing on the xml-simple results to 
get something that works. What version of Rails are you using? Some of 
that behavior changed a few months ago.

I like the description of xml-simple as neither xml nor simple. It seems 
to work ok for REST and ARes though. But if you''re doing xmlrpc you 
should be using a real xmlrpc package.

--
Josh Susser
http://blog.hasmanythrough.com
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Im using rails 1.2.5, is there more improvements on that?

Also, which package do you recommend. The thing is, is that many of 
these api/service methods have a respond_to block which implements other 
mime-types. Now I can do format.xml{render :xml => "<xml>"},
but im not
sure if i can do that if i use a package, can I?

Josh Susser wrote:
> Aryk Grosz wrote:
>> Im trying to create an xmlrpc service. Rails by default uses xml_simple
>> to parse incoming raw xml data into a hash.
>> 
>> The problem is, that if I start out with a hash like this:
>> 
>> hash = {:books => [{:id=>4,:key=>3}, {:id=>644,
:key=>54}]} and convert
>> it to xml via to_xml, when I read it back in, it ends up doing
something
>> like:
>> 
>> 
>> result_hash = {:books => {"book" => [{...},{...}}]}
>> 
>> so I end up accessing the books array with
hash["books"]["book"]
>> 
>> Has anyone experienced this before?
> 
> Yes.  Rails does some extra post-processing on the xml-simple results to 
> get something that works. What version of Rails are you using? Some of 
> that behavior changed a few months ago.
> 
> I like the description of xml-simple as neither xml nor simple. It seems 
> to work ok for REST and ARes though. But if you''re doing xmlrpc
you
> should be using a real xmlrpc package.
> 
> --
> Josh Susser
> http://blog.hasmanythrough.com
-- 
Posted via http://www.ruby-forum.com/.

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