[Zope3-Users] Extending the Buddy demo

Tue Dec 28 10:19:18 EST 2004

Hi,

    Can someone help me with the following problem:

    I wanted to add methods to the Buddy and BuddyFolder objects, which 
do nothing more than return a "hello world" message that I can use in a 
zpt page

    So, I have added the following to the IBuddy and IBuddyFolder class 
definitions

    def hello():
          """Displays a hello world message"""

    and then in the Buddy and BuddyFolder class Definitions:

    def hello(self):
          return "Hello World"

    and then I have the following zpt page (helloF.zpt):

    <html metal:use-macro="context/@@standard_macros/page"
    i18n:domain="buddydemo">
<body><div metal:fill-slot="body">
    <table>
        <caption i18n:translate="">Buddy Folder Hello</caption>
        <tr> <td tal:content="*context/hello*">hiya</td>
        </tr>
    </table>
</div></body></html>

    and I have a  page definition in the configure.zcml:

 <browser:page
     for=".interfaces.IBuddyFolder"
     name="hello.html"
     class=".buddy.BuddyFolder"
     template="hello.pt"
     permission="zope.ManageContent"
     />

    calling the hello method for a buddy works fine, but when I try and 
use the "context/hello" directive for the BuddyFolder (via hello.html) I 
get the following error:

    2004-12-29T02:15:49 ERROR SiteError 
http://demo:8080/testF/buddyF/hello.html
Traceback (most recent call last):
  File 
"/home/adam/ZopeX3-3.0.0/build/lib.linux-i686-2.4/zope/publisher/publish.
py", line 135, in publish
    object = request.traverse(object)
  File 
"/home/adam/ZopeX3-3.0.0/build/lib.linux-i686-2.4/zope/publisher/browser.
py", line 493, in traverse
    ob = super(BrowserRequest, self).traverse(object)
  File 
"/home/adam/ZopeX3-3.0.0/build/lib.linux-i686-2.4/zope/publisher/http.py"
, line 381, in traverse
    ob = super(HTTPRequest, self).traverse(object)
  File 
"/home/adam/ZopeX3-3.0.0/build/lib.linux-i686-2.4/zope/publisher/base.py"
, line 258, in traverse
    subobject = publication.traverseName(
  File 
"/home/adam/ZopeX3-3.0.0/build/lib.linux-i686-2.4/zope/app/publication/pu
blicationtraverse.py", line 56, in traverseName
    ob2 = adapter.publishTraverse(request, nm)
  File 
"/home/adam/ZopeX3-3.0.0/build/lib.linux-i686-2.4/zope/app/container/trav
ersal.py", line 73, in publishTraverse
    view = zapi.queryView(self.context, name, request)
  File 
"/home/adam/ZopeX3-3.0.0/build/lib.linux-i686-2.4/zope/app/component/hook
s.py", line 116, in queryView
    providing=providing)
  File 
"/home/adam/ZopeX3-3.0.0/build/lib.linux-i686-2.4/zope/component/presenta
tion.py", line 403, in queryView
    r = layer.queryMultiAdapter(objects, providing, name)
  File 
"/home/adam/ZopeX3-3.0.0/build/lib.linux-i686-2.4/zope/interface/adapter.
py", line 470, in queryMultiAdapter
    return factory(*objects)
TypeError: __init__() takes exactly 1 argument (3 given)
192.168.168.1 - zope.manager [29/Dec/2004:02:15:49 +1100] "GET 
/testF/buddyF/hello
.html HTTP/1.1" 200 292 "" "Mozilla/5.0 (Windows; U; Windows NT 5.1; 
en-US; rv:1
.7.5) Gecko/20041107 Firefox/1.0"

Is anyone able to help with this, by explainign what I should be doing 
if I want to have methods against containers? Whilst this in itself is a 
trivial example, I need to have this understanding.

Thanks in advance,
Adam