[Twisted-web] Athena javascript question

[Juanjo Conti]

Hi all,

I used Twisted to write a small server and now I am using Nevow.Athena
to write a web administrative interface. I got the tutorials running
and now I am changing it to reach what I want for my webapp.

The problem I am having is in the javascript side. Whe I try this js:

/ import Nevow.Athena

TempDisplay.TempWidget = Nevow.Athena.Widget.subclass('TempDisplay.TempWidget');

TempDisplay.TempWidget.methods(
    function __init__(self, node) {
        TempDisplay.TempWidget.upcall(self, "__init__", node);

        self.tempWidget = self.nodeByAttribute('name', 'terElement');

        self.tempSalaTxt = document.createTextNode('');
        self.tempSala = self.nodeByAttribute('name', 'temp_sala')
        self.tempSala.appendChild(self.tempSalaTxt);

        self.tempRetornoTxt = document.createTextNode('');
        self.tempRetorno = self.nodeByAttribute('name', 'temp_retorno');
        self.tempRetorno.appendChild(self.tempRetornoTxt);

        self.tempExteriorTxt = document.createTextNode('');
        self.tempExterior = self.nodeByAttribute('name', 'temp_exterior');
        self.tempExterior.appendChild(self.tempExteriorTxt);
    },

    function doRead(self) {
        // ejecuta funcion read en servidor
        self.callRemote("read");
        return false;
    },

    function actualizarValores(self, data) {
        // llamada por servidor para actualizar valores
        var valores = data.split(',');

        self.tempSala.remove(self.tempSalaTxt);
        self.tempSalaTxt = document.createTextNode(valores[0]);
        self.tempSala.appendChild(self.tempSalaTxt);

        self.tempRetorno(self.tempRetornoTxt);
        self.tempRetornoTxt = document.createTextNode(valores[1]);
        self.tempRetorno.appendChild(self.tempRetornoTxt);

        self.tempExterior.remove(self.tempExteriorTxt);
        self.tempExteriorTxt = document.createTextNode(valores[2]);
        self.tempExterior.appendChild(self.tempExteriorTxt);
    });

When the functión actualizarValores is excecuted from the server, I
get this error:

Unhandled error in Deferred:
Traceback (most recent call last):
  File "c:\Python25\lib\site-packages\nevow\js\Divmod\Runtime\__init__.js", lin
 566, in ([object Event])
    d.callback(result);
--- <exception caught here> ---
  File "c:\Python25\lib\site-packages\nevow\js\Divmod\Runtime\__init__.js", lin
 566, in ([object Event])
    d.callback(result);
  File "c:\Python25\lib\site-packages\nevow\js\Divmod\__init__.js", line 249, i
 ([object Object])
    return methodFunction.apply(this, args);
  File "c:\Python25\lib\site-packages\nevow\js\Divmod\Defer.js", line 258, in c
llback([object Object],[object Object])
    self._startRunCallbacks(result);
  File "c:\Python25\lib\site-packages\nevow\js\Divmod\__init__.js", line 249, i
 ([object Object])
    return methodFunction.apply(this, args);
  File "c:\Python25\lib\site-packages\nevow\js\Divmod\Defer.js", line 255, in _
tartRunCallbacks([object Object],[object Object])
    self._runCallbacks();
  File "c:\Python25\lib\site-packages\nevow\js\Divmod\__init__.js", line 249, i
 ()
    return methodFunction.apply(this, args);
  File "c:\Python25\lib\site-packages\nevow\js\Divmod\Defer.js", line 229, in _
unCallbacks([object Object])
    self._result = callback.apply(null, args);
  File "c:\Python25\lib\site-packages\nevow\js\Nevow\Athena\__init__.js", line
92, in ([object Array])
    self.messageReceived(result[1]);
  File "c:\Python25\lib\site-packages\nevow\js\Divmod\__init__.js", line 249, i
 ([object Array])
    return methodFunction.apply(this, args);
  File "c:\Python25\lib\site-packages\nevow\js\Nevow\Athena\__init__.js", line
35, in messageReceived([object Object],[object Array])
    self.page['action_'+actionName].apply(self.page, actionArgs);
  File "c:\Python25\lib\site-packages\nevow\js\Divmod\__init__.js", line 249, i
 ("Nevow.Athena.callByAthenaID","s2c0",[object Array])
    return methodFunction.apply(this, args);
  File "c:\Python25\lib\site-packages\nevow\js\Nevow\Athena\__init__.js", line
48, in action_call([object Object],"Nevow.Athena.callByAthenaID","s2c0",[object
Array])
    result = method.apply(target, funcArgs);
  File "c:\Python25\lib\site-packages\nevow\js\Nevow\Athena\__init__.js", line
259, in (1,"actualizarValores",[object Array])
    return method.apply(widget, varargs);
  File "c:\Python25\lib\site-packages\nevow\js\Divmod\__init__.js", line 249, i
 ("21.4,27.8,31.8")
    return methodFunction.apply(this, args);
  File "C:\Documents and Settings\Teco2006\Escritorio\line\js\TempDisplay.js",
ine 34, in actualizarValores([object Object],"21.4,27.8,31.8")
    self.tempSala.remove(self.tempSalaTxt);
nevow.athena.JSException: TypeError: self.tempSala.remove is not a function

As far as I know, remove is a valid javascript function. Why can't I
use it in this context?

Thanks in advance!

-- 
Juanjo Conti