[Zope3-Users] "Forbidden Attribute" errors whilst adapting to schema

[Rupert Redington]

Morning (if it is for you)...

I've been trying to write an adapter which stores data submitted by a
schema generated form into the annotations on an object. I've been
guided in this by both Stephan's and Philipp's books (though neither
provide an example of what I'm trying to do). My unit tests indicate
that my adapter functions correctly. But when I try to access a
browser:editForm for the schema I receive the traceback below. I've made
several attempts to work around/though the errors, but I soon find
myself out of my depth in a world of LocationProxys.

I've written the simplest example that I can - but I'm not sure that it
would be acceptable to attach a tarball to a mail to this list. I've put
it up here: http://www.neontribe.co.uk/~rupert/adaptertest.tar.bz2

Figuring that, since my unittests run, I've probably misconfigured
myself into a permissions problem I've also included the ZCML from my
example.

Thanks in advance for any advice


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

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

  <content class=".link.Link">
    <implements
        interface="zope.app.annotation.interfaces.IAttributeAnnotatable"
        />
    <factory
        id="adaptertest.link.Link"
        description="Link"
        />
    <require
        permission="zope.View"
        interface=".interfaces.ILink"
        />
    <require
        permission="zope.ManageContent"
        set_schema=".interfaces.ILink"
        />
  </content>

  <adapter
      for=".interfaces.ILink"
      provides=".interfaces.ILinkDetails"
      factory=".link.LinkDetails"
      trusted="True"
      />


  <include package=".browser"/>


</configure>

.browser/configure.zcml

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

    <browser:addform
  	  label="Add Link"
  	  name="AddLink.html"
  	  schema="adaptertest.interfaces.ILink"
  	  content_factory="adaptertest.link.Link"
  	  fields="url"
  	  permission="zope.ManageContent"
  	  />
  	
  <browser:addMenuItem
      class="adaptertest.link.Link"
      title="Link"
      permission="zope.ManageContent"
      view="AddLink.html"
      />

  <browser:editform
      schema="adaptertest.interfaces.ILink"
	  for="adaptertest.interfaces.ILink"
	  label="Edit Link"
	  fields="url"
	  name="edit.html"
	  permission="zope.ManageContent"
	  menu="zmi_views"
	  title="Edit"
	  />

  <!-- add a page to handle the ILinkDetails adapter -->

  <browser:editform
      schema="adaptertest.interfaces.ILinkDetails"
      for="adaptertest.interfaces.ILink"
      label="Edit Details"
      fields="description"
      name="editDetails.html"
      permission="zope.ManageContent"
      menu="zmi_views"
      title="Edit Details"
      />

</configure>


Error type: zope.security.interfaces.ForbiddenAttribute
Error object: ('description', <adaptertest.link.LinkDetails object at
0xb62ad8ec>)

  File "/home/rupert/Zope3/lib/python/zope/publisher/publish.py", line
135, in publish
    object = request.traverse(object)

      File "/home/rupert/Zope3/lib/python/zope/publisher/browser.py",
line 500, in traverse
    ob = super(BrowserRequest, self).traverse(object)

      File "/home/rupert/Zope3/lib/python/zope/publisher/http.py", line
451, in traverse
    ob = super(HTTPRequest, self).traverse(object)

      File "/home/rupert/Zope3/lib/python/zope/publisher/base.py", line
289, in traverse
    subobject = publication.traverseName(

      File
"/home/rupert/Zope3/lib/python/zope/app/publication/publicationtraverse.py",
line 46, in traverseName
    ob2 = namespaceLookup(ns, nm, ob, request)

      File
"/home/rupert/Zope3/lib/python/zope/app/traversing/namespace.py", line
121, in namespaceLookup
    return traverser.traverse(name, ())

      File
"/home/rupert/Zope3/lib/python/zope/app/traversing/namespace.py", line
363, in traverse
    name=name)

      File "/home/rupert/Zope3/lib/python/zope/component/__init__.py",
line 165, in queryMultiAdapter
    return sitemanager.queryMultiAdapter(objects, interface, name, default)

      File "/home/rupert/Zope3/lib/python/zope/component/site.py", line
75, in queryMultiAdapter
    default)

      File "/home/rupert/Zope3/lib/python/zope/interface/adapter.py",
line 475, in queryMultiAdapter
    return factory(*objects)

      File
"/home/rupert/Zope3/lib/python/zope/app/form/browser/editview.py", line
64, in __init__
    self._setUpWidgets()

      File
"/home/rupert/Zope3/lib/python/zope/app/form/browser/editview.py", line
69, in _setUpWidgets
    names=self.fieldNames)

      File "/home/rupert/Zope3/lib/python/zope/app/form/utility.py",
line 187, in setUpEditWidgets
    value = field.get(source)

      File
"/home/rupert/Zope3/lib/python/zope/schema/_bootstrapfields.py", line
171, in get
    return getattr(object, self.__name__)