[Twisted-web] txJSONRPC: issue accesson Session information and returning error

[exarkun at twistedmatrix.com]

On 12:01 am, goffi at goffi.org wrote:
>G'day everybody,
>
>I'm using TxJSON-RPC with twisted.web for a project.
>In my JSON-RPC method, I want to access the Request instance to call
>getSession() (I need to identify the user which is calling the method
>with the Session instance), but the request object is not forwarded to
>jsonrpc_xxx methods. I don't see any other way than overidding the
>render method, is there any better way ?

twisted.web.xmlrpc had the same limitation until http://tm.tl/3073 was 
resolved recently.  For that ticket we added a `withRequest` decorator. 
The same solution could most likely be applied to txjsonrpc.

Jean-Paul
>My other issue is that I want to be able to return a jsonrpc error 
>(when
>the user is not identified), and when I send a
>jsonrpclib.Fail(12,"hello") like in the tests, I have a HTML 500 error.
>Any suggestion ?
>
>Thanks
>Goffi
>
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