[Grok-dev] Problem with grok.AddForm, grok.Adapter and widgets

[Hannes]

Hi Grokkers,

I've some problem with a schema.Object field when I wanna use grok.AddForm.

Seems like I've to write an Adapter class...?, but unfortunately I don't 
know how.... :-(

thanks.

--------------------------- here's my interfaces.py ------------------------

class IVersionPart1(Interface):
    major = Int(
        title = u'Major Version Number'
    )

    minor = Int(
        title = u'Minor Version Number'
    )


class IVersionPart2(Interface):
    v3 = Int(
        title = u'V3'
    )

    v4 = Int(
        title = u'V4'
    )

    v5 = Int(
        title = u'V5'
    )


class IVersion(IVersionPart1, IVersionPart2):
    """ Combines both Version Parts """


class IPlatform(Interface):
    name = TextLine(
        title = u'The Platform Name'
    )

    bits = Int(
        title = u'32 or 64bit System'
    )


class IProduct(Interface):  
    code = TextLine(
        title = u'Product Code'
    )

    name = TextLine(
        title = u'Full Product Name'
    )

    platform = Object(
        title = u'Platform',
        schema = IPlatform
    )

    version = Object(
        title = u'Version',
        schema = IVersion
    )

---------------------------- here's my product.py 
-------------------------------------

import grok
from interfaces import IProduct

from zope.app.form import CustomWidgetFactory
from zope.app.form.browser import ObjectWidget

from product_controller import ProductController
from version import Version
from platform import Platform

myVersionWidget = CustomWidgetFactory(ObjectWidget, Version)
myPlatformWidget = CustomWidgetFactory(ObjectWidget, Platform)


class Product(grok.Model):
    """ Persistent Product """
    grok.implements(IProduct)

    def __init__(self, code, name, platformObj, versionObj):
        super(Product, self).__init__()
        self.code = code
        self.name = name
        self.platform = platformObj
        self.version = versionObj


class Add(grok.AddForm):
    """ Adds a product to the ProductController """
    grok.context(ProductController)
    form_fields = grok.AutoFields(Product)
    form_fields['version'].custom_widget = myVersionWidget
    form_fields['platform'].custom_widget = myPlatformWidget

    @grok.action('Add Product')
    def add(self, **data):
        platformObj = Platform(data['platform']['name'],
                               data['platform']['bits'])
        versionObj = Version(data['version']['major'],
                             data['version']['minor'],
                             data['version']['sp'],
                             data['version']['fix'],
                             data['version']['build'])
        product = Product(data['code'],
                          data['name'],
                          platformObj,
                          versionObj)
        self.context[product.code] = product
        self.redirect(url(p))


class Edit(grok.EditForm):
    """ Knows how to edit a product """
    form_fields = grok.AutoFields(Product)
    form_fields['version'].custom_widget = myVersionWidget
    form_fields['platform'].custom_widget = myPlatformWidget


class Index(grok.DisplayForm):
    """ Knows how to display a product """


#from  zope.component.interfaces.IView import IInputWidget

#class VersionWidgetAdapter(grok.Adapter):
    #grok.context(Version)
    #grok.provides(IInputWidget)

   
----------------------------------- here's the output from zopectl -------

------
2010-01-26T03:06:23 INFO root -- HTTP:localhost:8080 Server started.
    Hostname: localhost
    Port: 8080
------
2010-01-26T03:06:23 INFO root Startup time: 2.234 sec real, 2.210 sec CPU
------
2010-01-26T03:06:30 ERROR SiteError http://192.168.1.3:8080/app/products/add
Traceback (most recent call last):
  File 
"/home/wacky/.buildout/eggs/zope.publisher-3.4.9-py2.5.egg/zope/publisher/publish.py", 
line 133, in publish
    result = publication.callObject(request, obj)
  File 
"/home/wacky/.buildout/eggs/grok-1.0-py2.5.egg/grok/publication.py", 
line 89, in callObject
    return super(ZopePublicationSansProxy, self).callObject(request, ob)
  File 
"/home/wacky/.buildout/eggs/zope.app.publication-3.4.3-py2.5.egg/zope/app/publication/zopepublication.py", 
line 167, in callObject
    return mapply(ob, request.getPositionalArguments(), request)
  File 
"/home/wacky/.buildout/eggs/zope.publisher-3.4.9-py2.5.egg/zope/publisher/publish.py", 
line 108, in mapply
    return debug_call(obj, args)
   - __traceback_info__: <VersionTest.product.Add object at 0x26d27d0>
  File 
"/home/wacky/.buildout/eggs/zope.publisher-3.4.9-py2.5.egg/zope/publisher/publish.py", 
line 114, in debug_call
    return obj(*args)
  File 
"/home/wacky/.buildout/eggs/grokcore.formlib-1.4-py2.5.egg/grokcore/formlib/components.py", 
line 90, in __call__
    self.update_form()
  File 
"/home/wacky/.buildout/eggs/grokcore.formlib-1.4-py2.5.egg/grokcore/formlib/components.py", 
line 62, in update_form
    super(GrokForm, self).update()
  File 
"/home/wacky/.buildout/eggs/zope.formlib-3.4.0-py2.5.egg/zope/formlib/form.py", 
line 740, in update
    errors, action = handleSubmit(self.actions, data, self.validate)
  File 
"/home/wacky/.buildout/eggs/zope.formlib-3.4.0-py2.5.egg/zope/formlib/form.py", 
line 683, in handleSubmit
    errors = default_validate(action, data)
  File 
"/home/wacky/.buildout/eggs/zope.formlib-3.4.0-py2.5.egg/zope/formlib/form.py", 
line 720, in validate
    return (getWidgetsData(self.widgets, self.prefix, data)
  File 
"/home/wacky/.buildout/eggs/zope.formlib-3.4.0-py2.5.egg/zope/formlib/form.py", 
line 344, in getWidgetsData
    data[name] = widget.getInputValue()
  File 
"/home/wacky/.buildout/eggs/zope.app.form-3.4.1-py2.5.egg/zope/app/form/browser/objectwidget.py", 
line 134, in getInputValue
    content = self.factory()
TypeError: __init__() takes exactly 3 arguments (1 given)