[Zope3-dev] expected string or Unicode object

[Florian Lindner]

Hello,
everytime I add my utility I get:

2006-12-04T22:44:26 ERROR SiteError 
http://horus.local:8080/++etc++site/default/+/AddJabberClient.html%3D
Traceback (most recent call last):
  File "/home/florian/Zope3/src/zope/publisher/publish.py", line 138, in 
publish
    publication.afterCall(request, obj)
  File "/home/florian/Zope3/src/zope/app/publication/browser.py", line 78, in 
afterCall
    super(BrowserPublication, self).afterCall(request, ob)
  File "/home/florian/Zope3/src/zope/app/publication/zopepublication.py", line 
167, in afterCall
    txn.commit()
  File "/home/florian/Zope3/src/transaction/_transaction.py", line 395, in 
commit
    self._commitResources()
  File "/home/florian/Zope3/src/transaction/_transaction.py", line 495, in 
_commitResources
    rm.commit(self)
  File "/home/florian/Zope3/src/ZODB/Connection.py", line 498, in commit
    self._commit(transaction)
  File "/home/florian/Zope3/src/ZODB/Connection.py", line 543, in _commit
    self._store_objects(ObjectWriter(obj), transaction)
  File "/home/florian/Zope3/src/ZODB/Connection.py", line 570, in 
_store_objects
    p = writer.serialize(obj)  # This calls __getstate__ of obj
  File "/home/florian/Zope3/src/ZODB/serialize.py", line 407, in serialize
    return self._dump(meta, obj.__getstate__())
  File "/home/florian/Zope3/src/ZODB/serialize.py", line 416, in _dump
    self._p.dump(state)
TypeError: expected string or Unicode object, NoneType found
127.0.0.1 - - [4/Dec/2006:22:44:26 
+0200] "POST /++etc++site/default/+/AddJabberClient.html%3D HTTP/1.1" 500 
89 "http://horus.local:8080/++etc++site/default/+/AddJabberClient.html=" "Mozilla/5.0 
(compatible; Konqueror/3.5; Linux) KHTML/3.5.5 (like Gecko)"

I have already tried on zope3-users but got no solution. This is my code:

interfaces.py:

from zope.interface import Interface
from zope.schema import TextLine, Password, Bool

class IJabberClient(Interface):
    JID = TextLine(
                        title = u"Jabber ID",
                        description = u"Jabber ID (user at example.com). You need 
to reconnect in order to take effect.",
                        required = True )
                        
    password = Password(
                        title = u"Password",
                        description = u"Password for the jabber account",
                        required = True )
    
    connectOnStartup = Bool(
                        title = u"Connect on startup",
                        description = u"Automatically connect when Zope starts 
and also when the object is newly added (what you are about to do).",
                        default = True)

jabberclient.py:

from interfaces import IJabberClient
from zope.interface import implements

from persistent import Persistent
from zope.app.container.contained import Contained

import xmpp

class JabberClient(Persistent, Contained):
    implements(IJabberClient)
    
    JID = u""
    password = u""
    connectOnStartup = True
    
    status = u"offline"

    
    def finishInitialization(self):
        """ Finish the rest of the initialziation that can't be done in 
__init__. """
        if self.connectOnStartup:
            self.setStatus("available")
        else:
            self.setStatus("offline")

    
    def setStatus(self, newStatus):
        if self.status == "offline" and newStatus == "available":
            self.jabberID = xmpp.protocol.JID(self.JID)
            self.client = xmpp.Client(self.jabberID.getDomain(), debug=[])
            self.client.connect()
            self.client.auth(self.jabberID.getNode(), self.password)
            self.client.sendPresence(self.jabberID)
            
        if self.status == "available" and newStatus == "offline":
            # disconnect
            pass
            
        self.status = newStatus
        
    def getStatus(self):
        return self.status
    
          
def onObjectAdded(event):
    if IJabberClient.providedBy(event.object):
        event.object.finishInitialization()


configure.zcml

<configure xmlns="http://namespaces.zope.org/zope" 
xmlns:browser="http://namespaces.zope.org/browser">

    <class class=".jabberclient.JabberClient">

        <require
            permission="zope.ManageServices"
            interface=".interfaces.IJabberClient"
            set_schema=".interfaces.IJabberClient" />

    </class>

    <browser:addform
        schema=".interfaces.IJabberClient"
        label="Add a JabberClient object"
        content_factory=".jabberclient.JabberClient"
        name="AddJabberClient.html"
        permission="zope.ManageServices"
        set_before_add="JID password connectOnStartup" />

    <browser:addMenuItem
        title="Jabber Client" 
        class=".jabberclient.JabberClient"
        permission="zope.ManageServices"
        view="AddJabberClient.html" />

    <browser:editform
        schema=".interfaces.IJabberClient"
        label="Edit the JabberClient"
        name="edit.html"
        permission="zope.ManageServices"
        menu="zmi_views" title="Edit" />

    <subscriber
        for="zope.app.container.interfaces.IObjectAddedEvent"
        handler=".jabberclient.onObjectAdded"
    />

</configure>


Sorry for the huge posting but I got no idea where the error comes from. The 
error occurs only when connectOnStartup is True.

Thanks for any help,

Florian