On Sep 19, 12:22 pm, Roberto <[EMAIL PROTECTED]> wrote:
> Hi,
>
> I have a Rails 2 app and I wand to provide an API for 3rd party
> applications written on any language the customer uses.
>
> My thoughts are that the best way of providing it is by taking
> advantage of rails RESTfulness and let them perform CRUD actions on my
> data through it. But I don't seem to find many information on how to
> achieve this.
Definitely. Your controller can provide an out-of-the-box API by
examining the HTTP accept header and returning XML. Rails wraps this
up for you automatically if you use the respond_to method in your
controller:
def index
@things = Thing.find(:all)
respond_to do |format|
format.html # render template
format.xml { render :xml => @things.to_xml }
end
end
This example is a bit simplistic but demonstrates the principle of how
you can return XML instead of HTML based on the http header.
> I first want to develop .NET clients (or web service consumers)
> because must of our customers use .NET. I did some prototypes and
> could retrieve XML data, but I don't seem to find a way of doing
> inserts, updates and deletes.
> What I get is a 422 http error from the rails server and I assume has
> something to do with the Header.
> Where can I find more information about this. More specificlly about
> what the server is expecting to receive in the header and the message.
>
Make sure you're setting the accept and content-type headers correctly
to "text/xml" or "application/xml". That's the clue Rails needs to
trigger the right action in your respond_to block. We actually have a
chapter on doing this exact thing in our upcoming book, Rails for .NET
Developers (http://pragprog.com/titles/cerailn).
>
> Also, if someone has experience on WCF and can point me out where to
> find more valuable info it will be appreciated.
>
> Java examples will work as well.
You may find our upcoming class helpful, as we touch on RESTful web
service creation in Rails:
http://www.purpleworkshops.com/workshops/rest-and-web-services
(you can use discount code "PWRRGG" for 10% off).
Hope this helps a bit?
Jeff
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