[Zope3-dev] browser:containerViews (browser:page and browser:view)

[Dominik Huber]

I stumbled across the following problem:
browser:containerViews uses browser:view and browser:page. Those 
register optionally a menu using browser:menuItem. The menu stuff does 
not support layers. Therefore registrations using the same contenttype, 
menu interface and menu title (for example [1]) are leading to a 
ConfigurationConflictError [2]

[1]
  <browser:page
      name="foo.html"
      for=".IFoo"
      permission="zope.View"
      template="index.pt"
      menu="zmi_views" title="Foo"
      />

  <browser:page
      name="foo.html"
      for=".IFoo"
      permission="zope.View"
      template="index.pt"
      menu="zmi_views" title="Foo"
      layer=".IFooLayer"
      />
[2]
zope.configuration.config.ConfigurationConflictError: Conflicting 
configuration
actions
  For: ('adapter', (<InterfaceClass ..IFoo>, <InterfaceClass 
..IBrowserRequest>),
 <InterfaceClass zope.app.menus.zmi_views>, u'Foo')

In my opinion this behavior is a bug. I would expect that I could 
register serveral pages within different layers for the same for, menu 
and title.

At the moment I could provide a simple patch for the view and page 
directive which prevents multi-menu registrations within the page- and 
view-directive for contenttypes with the same menu interface and menu 
title. Would that be ok at the moment? Later IMO we should extend the 
menu stuff that menu supports layers too.

Thoughts? Objections?

Regards,
Dominik