[Zope3-Users] Composing content objects

[David Johnson]

The exact traceback would be useful. Can you post it?


> -----Original Message-----
> From: zope3-users-bounces at zope.org [mailto:zope3-users-bounces at zope.org]
> On Behalf Of Achim Domma
> Sent: Saturday, May 13, 2006 5:30 AM
> To: zope3-users at zope.org
> Subject: [Zope3-Users] Composing content objects
> 
> Hi,
> 
> thanks to Phillips book and the help from this list, I managed to write
> some usable content objects, to implement some views and to skin this
> views. Now I have a new problem:
> 
> I have implemented IArticle, IArticleFolder, IProject and
> IProjectFolder. IArticle and IProject are simple content interfaces
> which work so far. The folder interfaces are simply derived from
> IFolder. They have constraints, so that only the correct types can be
> inserted.
> 
> Now I try to implement IWorkspace, which should have a property
> 'projects' being an IProjectFolder instance and a property 'articles'
> being an IArticleFolder.
> 
> My current version looks like this:
> 
> class IWorkspace(Interface):
>      title = TextLine(
>         title=u"Title",
>         description=u"The title",
>         default=u"Workspace",
>         required=True)
> 
>      projects = Dict(
>          key_type=Id(title=u"ID",description=u"xxx"),
>          value_type=Object(title=u"Object",description=u"xxx"),
>          title=u"Projects",
>          description=u"Projects in this workspace")
> 
>      articles = Dict(...)
> 
> When I try to start Zope, I get the following error message:
> 
> ZopeXMLConfigurationError: File "C:\...\configure.zcml", line 3.4-3.100
>    TypeError: __init__() takes exactly 2 non-keyword arguments (1 given)
> 
> The matching line in configure.zcml looks like this:
> 
> <interface interface=".interfaces.IWorkspace"
> type="zope.app.content.interfaces.IContentType" />
> 
> I have no problem reading code, but I don't know how to figure out which
> __init__ causes the error. Neither Dict, nor Id or Object seem to have a
> __init__ which might cause this message!?
> 
> Can somebody enlighten me? Am I thinking in the wrong direction? Is
> there a better way to combine content objects? Any hint is very welcome?
> 
> regards,
> Achim
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