[Zope3-Users] using filter in addMenuItem

[Ivan Horvath]

Dear All,

it seems that i have to use filter attribute in browser:addMenuItem
directive. i couldn't find any usable help how to use it, and my
trials are failed so far.

this is the menu declaration in zcml:
  <browser:addMenuItem
      title="Article"
      factory="fa.Article"
      view="addArticle.html"
      filter="context/isNeedtoDisplay"
      permission="zope.ManageContent"
      />

  <browser:page
    for="zope.app.container.interfaces.IAdding"
    name="addArticle.html"
    class=".helper.ArticleAddForm"
    permission="zope.ManageContent"
    />

i receive always a TraversalError exception. i don't know where shall
i put the isNeedtoDisplay method.
  File "D:\alco\zope\src\zope\traversing\adapters.py", line 52, in traverse
    raise TraversalError(subject, name)
   - __traceback_info__: (<zope.app.publisher.browser.viewmeta.+ object at 0x02D
E9D90>, 'isNeedtoDisplay', [])
TraversalError: (<zope.app.publisher.browser.viewmeta.+ object at 0x02DE9D90>, '
isNeedtoDisplay')

thanks in advance

Ivan