Re: [Zope3-Users] Question about "ForbiddenAttribute"...
On Tue, 2006-06-13 at 08:26 +0200, Marco Mariani wrote:
> Thierry FLORAC wrote:
> >> name="images.html"
> > for=".interfaces.IGalleryFolder"
> > allowed_interface=".interfaces.IGalleryPhoto"
> > template="folder_images.pt"
> > permission="zope.View"
> > class=".folder.FolderInfo"
> > menu="zmi_views" title="Images" />
> >
> > But when trying to display the view, a ForbiddenAttribute exception is
> > raised :
> > File ".../browser/folder.py", line 39, in getImages
> > result.sort (lambda x,y:
> > cmp(IGalleryPhoto(x).name,IGalleryPhoto(y).name))
> > ForbiddenAttribute:('sort',[,...]
> >
> > So the forbidden attribute seems to be the "sort" method of the
> > resulting array, which of course isn't part of any of my interfaces.
> >
> > In such a case, I solved the problem by moving the "getSortedImages" to
> > the folder interface and content class.
> >
> You have to define an empty getImages method on the interface.
"getImages()" is already defined into IPhotoFolder interface. But Philip
already sent a reply with a full and clear explanation of my problem...
> > But that may not always be possible, so how can I get access to such
> > methods ??
> >
> Why should it not be possible? After all, you defined the FolderInfo
> view for the IGalleryFolder _Interface_, not the GalleryFolder class.
What I just mean (but perhaps I'm wrong) is that in my use case, the
"getSortedImages()" method is only used for presentation purpose in a
specific context, a specific browser view.
I think this kind of method shouldn't have to be defined in an interface
which main goal is to define generic content handling methods...
I don't know if my explanation is clear :-(
Thierry
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Re: [Zope3-Users] Question about "ForbiddenAttribute"...
Thierry FLORAC wrote:
>name="images.html"
> for=".interfaces.IGalleryFolder"
> allowed_interface=".interfaces.IGalleryPhoto"
> template="folder_images.pt"
> permission="zope.View"
> class=".folder.FolderInfo"
> menu="zmi_views" title="Images" />
>
> But when trying to display the view, a ForbiddenAttribute exception is
> raised :
> File ".../browser/folder.py", line 39, in getImages
> result.sort (lambda x,y:
> cmp(IGalleryPhoto(x).name,IGalleryPhoto(y).name))
> ForbiddenAttribute:('sort',[,...]
>
> So the forbidden attribute seems to be the "sort" method of the
> resulting array, which of course isn't part of any of my interfaces.
>
> In such a case, I solved the problem by moving the "getSortedImages" to
> the folder interface and content class.
>
You have to define an empty getImages method on the interface.
> But that may not always be possible, so how can I get access to such
> methods ??
>
Why should it not be possible? After all, you defined the FolderInfo
view for the IGalleryFolder _Interface_, not the GalleryFolder class.
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[Zope3-Users] Question about "ForbiddenAttribute"...
Hi,
I'm trying to build a sample photos management application for Zope-3.2,
with the following interfaces and classes :
- class IGalleryPhoto(IContainer)
...
- class IGalleryContainer(IContainer)
(marker interface used for preconditions)
- class IGalleryFolder(IGalleryContainer)
def getImages():
...
- class IGallery(IGalleryFolder,IPossibleSite)
...
- class GalleryPhoto(BTreeContainer)
...
- class GalleryFolder(Folder)
def getImages(self):
return [item for item in self.values()
if IGalleryPhoto.providedBy(item)]
- class Gallery(GalleryFolder, SiteManagerContainer)
...
Until now, it's OK !
After that, I created a sample view based on a page template for
IGalleryFolder, using a view class :
- ...
- class FolderInfo:
def getImages(self):
"""Get a sorted list of images"""
result = IGalleryFolder(self.context).getImages()
result.sort (lambda x,y: cmp(IGalleryPhoto(x).name,
IGalleryPhoto(y).name))
return result
The view is registered in ZCML like this :
But when trying to display the view, a ForbiddenAttribute exception is
raised :
File ".../browser/folder.py", line 39, in getImages
result.sort (lambda x,y:
cmp(IGalleryPhoto(x).name,IGalleryPhoto(y).name))
ForbiddenAttribute:('sort',[,...]
So the forbidden attribute seems to be the "sort" method of the
resulting array, which of course isn't part of any of my interfaces.
In such a case, I solved the problem by moving the "getSortedImages" to
the folder interface and content class.
But that may not always be possible, so how can I get access to such
methods ??
Thanks for any help,
Thierry
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