[Zope3-Users] ComponentLookupError

Thu May 11 13:12:18 EDT 2006

hi there

here's a smaller, hopefully more clearer example of a problem I have  
been stuck on.  I should probably also lead off by saying that I  
think what I am asking is basically this question.

http://www.mail-archive.com/zope3-users@zope.org/msg00052.html

However I have read objectwidget.txt( http://svn.zope.org/Zope3/trunk/ 
src/zope/app/form/browser/objectwidget.txt ) several times and I  
don't see where a "custom widget" gets created.  I also suspect that  
because the "object" I need to create a custom widget for has more  
than just one field I have to do something different.

If there's a short fix for the problem that would be great, otherwise  
a little explanation to point me in the right direction would be  
greatly appreciated too.

thanks.

-jachin

Here's the error I'm getting any my code:

2006-05-11T11:56:47 ERROR SiteError http://localhost:8080/@@+/ 
action.html
Traceback (most recent call last):
   File "/usr/local/Zope-3.2.1/lib/python/zope/publisher/publish.py",  
line 138, in publish
     result = publication.callObject(request, object)
   File "/usr/local/Zope-3.2.1/lib/python/zope/app/publication/ 
zopepublication.py", line 161, in callObject
     return mapply(ob, request.getPositionalArguments(), request)
   File "/usr/local/Zope-3.2.1/lib/python/zope/publisher/publish.py",  
line 113, in mapply
     return debug_call(object, args)
   File "/usr/local/Zope-3.2.1/lib/python/zope/publisher/publish.py",  
line 119, in debug_call
     return object(*args)
   File "/usr/local/Zope-3.2.1/lib/python/zope/app/container/browser/ 
adding.py", line 128, in action
     name=view_name) is not None:
   File "/usr/local/Zope-3.2.1/lib/python/zope/component/ 
__init__.py", line 165, in queryMultiAdapter
     return sitemanager.queryMultiAdapter(objects, interface, name,  
default)
   File "/usr/local/Zope-3.2.1/lib/python/zope/component/site.py",  
line 75, in queryMultiAdapter
     default)
   File "/usr/local/Zope-3.2.1/lib/python/zope/interface/adapter.py",  
line 475, in queryMultiAdapter
     return factory(*objects)
   File "/usr/local/Zope-3.2.1/lib/python/zope/app/form/browser/ 
editview.py", line 64, in __init__
     self._setUpWidgets()
   File "/usr/local/Zope-3.2.1/lib/python/zope/app/form/browser/ 
add.py", line 49, in _setUpWidgets
     setUpWidgets(self, self.schema, IInputWidget,  
names=self.fieldNames)
   File "/usr/local/Zope-3.2.1/lib/python/zope/app/form/utility.py",  
line 153, in setUpWidgets
     context=context)
   File "/usr/local/Zope-3.2.1/lib/python/zope/app/form/utility.py",  
line 97, in setUpWidget
     widget = _createWidget(context, field, viewType, view.request)
   File "/usr/local/Zope-3.2.1/lib/python/zope/app/form/utility.py",  
line 65, in _createWidget
     return zapi.getMultiAdapter((field, request), viewType)
   File "/usr/local/Zope-3.2.1/lib/python/zope/component/ 
__init__.py", line 154, in getMultiAdapter
     raise ComponentLookupError(objects, interface, name)
ComponentLookupError: ((<zope.schema._field.Object object at  
0x4282b70>, <zope.publisher.browser.BrowserRequest instance  
URL=http://localhost:8080/@@+/action.html>), <InterfaceClass  
zope.app.form.interfaces.IInputWidget>, u'')
127.0.0.1 - - [11/May/2006:11:56:47 -0500] "GET /@@+/action.html? 
type_name=AddPerson.html HTTP/1.1" 500 84 "http://localhost:8080/ 
@@contents.html" "Mozilla/5.0 (Macintosh; U; PPC Mac OS X Mach-O; en- 
US; rv:1.8.0.3) Gecko/20060427 Camino/1.0.1"

------------interfaces.py----------------

from zope.interface import Interface
import zope.schema

class IStreetAddress(Interface):
	"""A vine street address"""

	street = zope.schema.Text (
		title=u"Street 1",
		description=u"The street address",
		required = False
	)

	city = zope.schema.TextLine (
		title=u"City",
		description=u"The city.",
		required = False
	)

	state = zope.schema.TextLine (
		title=u"State",
		description=u"The state.",
		required = False
	)

	zipcode = zope.schema.TextLine (
		title=u"Zip Code",
		description=u"The zip code",
		required = False,
		min_length = 5
	)

class IPerson(Interface):
	firstName = zope.schema.TextLine (
		title=u"First Name",
		description=u"The person's first name",
		required=False
	)

	lastName = zope.schema.TextLine (
		title=u"Last Name",
		description=u"The person's last name",
		required=False
	)

	address = zope.schema.Object (
		title=u"Address",
		description=u"The person's adderess",
		required=False,
		schema = IStreetAddress
	)

------------person.py----------------

from persistent import Persistent
from zope.interface import implements

from abook.interfaces import IPerson
from abook.streetAddress import StreetAddress

class Person(Persistent):

	implements(IPerson)

	firstName = u""
	lastName = u""
	address = StreetAddress()

------------configure.zcml------------

<configure
	xmlns="http://namespaces.zope.org/zope"
	xmlns:browser="http://namespaces.zope.org/browser"
	xmlns:i18n="http://namespaces.zope.org/i18n"
	i18n_domain="abook">

	<!-- Person -->

	<interface
		interface	= ".interfaces.IPerson"
		type		= "zope.app.content.interfaces.IContentType"
		/>

	<content class = ".person.Person">
		<factory
			id			= "simple_abook.person.Person"
			description	= "A Person"
			/>
		<require
			permission	= "zope.View"
			interface	= ".interfaces.IPerson"
			/>
		<require
			permission	= "zope.View"
			set_schema	= ".interfaces.IPerson"
			/>
	</content>

	<browser:addform
		label			= "Add a Person"
		fields			= "firstName lastName address"
		name			= "AddPerson.html"
		schema			= ".interfaces.IPerson"
		content_factory	= ".person.Person"
		permission		= "zope.View"
		/>

	<browser:editform
		label			= "Edit a Person"
		schema			= ".interfaces.IPerson"
		for				= ".interfaces.IPerson"
		fields			= "firstName lastName address"
		name			= "edit.html"
		permission		= "zope.View"
		menu			= "zmi_views"
		title			= "Edit"
		/>

	<browser:addMenuItem
		title			= "A Person"
		description		= "Add a Person"
		view			= "AddPerson.html"
		class			= ".person.Person"
		permission		= "zope.View"
		/>

</configure>