Hi,
On Mon, May 29, 2006 at 08:26:38PM +0200, Achim Domma wrote:
> Hi,
>
> I have implemented ArticleFolder and Article like this:
>
>
> class Article(Persistent,Contained):
> implements(IArticle)
> title=u''
> body=u''
>
> class ArticleFolder(Folder):
> implements(IArticleFolder)
>
>
> Via ZMI I can add, edit and delete articles without problems. I use this TAL
> statement in a view
> for the object holding the article folder :
>
> <p tal:repeat="article context/articles">
> <a
> tal:content="article/title"
> tal:attributes="href article/@@absolute_url">asdf</a>
> </p>
>
> This fails with an "There isn't enough context to get URL information."
> exception. When the
> exception is thrown, I see in the debugger, that the context of AbsoluteUrl
> is the id of the first
> article as unicode string. And this string has of course no __parent__
> attribute!?
>
> I argued that context/articles might return ids, not objects, but in that
> case article/title
> should fail also. But if I remove tal:attributes, it works fine.
Remembering your last problem with Object()-schema, my guess is that you
stored your articles as a list ob Object()s in an articlefolder's
'articles'-attribute. This way a single article doesn't have an URL - it's
just an attribute - no matter which base classes (->Contained) you use.
You've got two options:
1. A view on articlefolder that take some arguments and displays a given
article. You'd have to use something like this then:
<a ... tal:attributes="href
${context/@@absolute_url}/articleview?${article/title}" ... />
2. Write your own traversal adapter that displays objects in lists like this:
<a ... tal:attributes="href
${context/@@absolute_url}/++article++${article/title}" ... />
If I were you, I'd take option one (if I guessed your problem right :-) ).
Regards,
Frank
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