Hi,
I'm a newbie to Zope
and taking my first steps into this wonderful world by going through the book
'Web Component Development with Zope 3' from Philipp von
Weitershausen.
Up to page 94 I have
had little difficulties reproducing the examples. I'm using the downloaded
example code as described in the book. I'm running Zope 3.2 on a Windows 2000
machine with Python 2.4 installed. My browser is Mozilla Firefox
1.5.0.1.
Real troubles start
with the code in paragraph 7.4 which adds a customized list input widget. The
browser/widget.pt and browser/sequence.js files run fine when directly invoked
from the browser. But when I run it from the Zope instance with the added
browser/widget.py and changed browser/configure.zcml it doesn't
work.
Here is what
happens:
I copied the
downloaded code from the book to
C:\Python24\Zope3InstanceWeitershausen\lib\python (this was successful for the
previous examples)
I start Zope by:
C:\Python24\Zope3InstanceWeitershausen\.\bin\runzope
I've made sure that
C:\Python24\Zope3InstanceWeitershausen\lib\python is in my
PYTHONPATH
I've deleted
C:\Python24\Zope3InstanceWeitershausen\var\Data.fs manually to get rid off
previous experiments
I start my browser
and log on using http://localhost:8080/manage
It al looks fine and
I have the Add - Recipe button
I click on Add
Recipe and the screen goes blank displaying:
Going back and
looking up the error log I see:
Traceback (innermost
last): Module zope.publisher.publish, line 138, in
publish result = publication.callObject(request,
object) Module zope.app.publication.zopepublication, line 161, in
callObject return mapply(ob,
request.getPositionalArguments(), request) Module
zope.publisher.publish, line 113, in mapply return
debug_call(object, args) - __traceback_info__: > Module zope.publisher.publish, line 119, in
debug_call return object(*args) Module
zope.app.container.browser.adding, line 128, in action
name=view_name) is not None: Module zope.component, line 165, in
queryMultiAdapter return
sitemanager.queryMultiAdapter(objects, interface, name, default)
Module zope.component.site, line 75, in queryMultiAdapter
default) Module zope.interface.adapter, line 475, in
queryMultiAdapter return factory(*objects)
Module zope.app.form.browser.editview, line 64, in
__init__ self._setUpWidgets() Module
zope.app.form.browser.add, line 49, in _setUpWidgets
setUpWidgets(self, self.schema, IInputWidget, names=self.fieldNames)
Module zope.app.form.utility, line 153, in setUpWidgets
context=context) Module zope.app.form.utility, line 101, in
setUpWidget widget = widget(field.bind(context),
view.request) Module zope.app.form, line 120, in
__call__ return self._create(args) Module
zope.app.form, line 102, in _create instance =
self._widget_factory(*args)TypeError: __init__() takes exactly 3 arguments
(4 given)
As a newbie this is
all too much for me. I've visited the books' website but there are no clues from
the errata. I've tried to look into release notes to see if something changed in
Zope 3.2 that explains it but no luck.
Can anyone help me
out? I've tried running other examples form the book past chapter 7 but they
also fail probably to my same mistakes.
Regards,
Tom
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