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Le mercredi 11 octobre 2006 à 00:52 +0200, Thierry FLORAC a écrit :
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<FONT COLOR="#000000"> Hi,</FONT>
<FONT COLOR="#000000">I try to setup a little application but have a probably little problem</FONT>
<FONT COLOR="#000000">with a ForbiddenAttribute exception on "location.locate" method.</FONT>
<FONT COLOR="#000000">Here is my setup :</FONT>
<FONT COLOR="#000000"> class IPhoto(IContainer,IContained):</FONT>
<FONT COLOR="#000000"> """Photo handling interface"""</FONT>
<FONT COLOR="#000000"> ...</FONT>
<FONT COLOR="#000000"> image = Bytes(...)</FONT>
<FONT COLOR="#000000"> ...</FONT>
<FONT COLOR="#000000"> </FONT>
<FONT COLOR="#000000"> class Photo(Folder):</FONT>
<FONT COLOR="#000000"> """Photo handling class"""</FONT>
<FONT COLOR="#000000"> ...</FONT>
<FONT COLOR="#000000"> image = None</FONT>
<FONT COLOR="#000000"> def __init__(self, image=None):</FONT>
<FONT COLOR="#000000"> super(Photo,self).__init__()</FONT>
<FONT COLOR="#000000"> self.__parent__ = self.__name__ = None</FONT>
<FONT COLOR="#000000"> if image:</FONT>
<FONT COLOR="#000000"> self.image = image</FONT>
<FONT COLOR="#000000"> ...</FONT>
<FONT COLOR="#000000"> </FONT>
<FONT COLOR="#000000"> class IEvent(IContained):</FONT>
<FONT COLOR="#000000"> """Event handling interface"""</FONT>
<FONT COLOR="#000000"> ...</FONT>
<FONT COLOR="#000000"> </FONT>
<FONT COLOR="#000000"> class Event(Persistent):</FONT>
<FONT COLOR="#000000"> """Event handling class"""</FONT>
<FONT COLOR="#000000"> ...</FONT>
<FONT COLOR="#000000"> def __init__(self):</FONT>
<FONT COLOR="#000000"> super(Event,self).__init__()</FONT>
<FONT COLOR="#000000"> self.__parent__ = self.__name__ = None</FONT>
<FONT COLOR="#000000">In my event creation form (derived from formlib.AddForm), I put</FONT>
<FONT COLOR="#000000">something like this, without a problem :</FONT>
<FONT COLOR="#000000"> def create(self, data):</FONT>
<FONT COLOR="#000000"> event = Event()</FONT>
<FONT COLOR="#000000"> if data.has_key('image'):</FONT>
<FONT COLOR="#000000"> event.image = Photo(image=data['image'])</FONT>
<FONT COLOR="#000000"> location.locate(event.image, event, 'image')</FONT>
<FONT COLOR="#000000"> form.applyChanges(event, self.form_fields, data)</FONT>
<FONT COLOR="#000000"> return event</FONT>
<FONT COLOR="#000000">"event.image" access can then be granted easily in an URL through a</FONT>
<FONT COLOR="#000000">"z3c.traverser" plug-in and everything works fine... until now !</FONT>
<FONT COLOR="#000000">Because when I'm trying to make the same thing in an edit form to update</FONT>
<FONT COLOR="#000000">an existing event, an exception is raised :</FONT>
<FONT COLOR="#000000"> def edit(self, action, data):</FONT>
<FONT COLOR="#000000"> changed = False</FONT>
<FONT COLOR="#000000"> event = self.context</FONT>
<FONT COLOR="#000000"> if data.has_key('image'):</FONT>
<FONT COLOR="#000000"> event.image = Photo(image=data['image'])</FONT>
<FONT COLOR="#000000"> location.locate(event.image, event, 'image')</FONT>
<FONT COLOR="#000000"> changed = True</FONT>
<FONT COLOR="#000000"> return super(EventEditForm,self).edit(action, data) or</FONT>
<FONT COLOR="#000000"> changed</FONT>
<FONT COLOR="#000000">Here is the traceback :</FONT>
<FONT COLOR="#000000">Traceback (most recent call last):</FONT>
<FONT COLOR="#000000"> File "/usr/local/zope/3.3.0/lib/python/zope/publisher/publish.py", line 133, in publish</FONT>
<FONT COLOR="#000000"> result = publication.callObject(request, obj)</FONT>
<FONT COLOR="#000000"> File "/usr/local/zope/3.3.0/lib/python/zope/app/publication/zopepublication.py", line 161, in callObject</FONT>
<FONT COLOR="#000000"> return mapply(ob, request.getPositionalArguments(), request)</FONT>
<FONT COLOR="#000000"> File "/usr/local/zope/3.3.0/lib/python/zope/publisher/publish.py", line 108, in mapply</FONT>
<FONT COLOR="#000000"> return debug_call(obj, args)</FONT>
<FONT COLOR="#000000"> - __traceback_info__: <security proxied zope.app.publisher.browser.viewmeta.NewsEventEditForm instance at 0xa677e20c></FONT>
<FONT COLOR="#000000"> File "/usr/local/zope/3.3.0/lib/python/zope/publisher/publish.py", line 114, in debug_call</FONT>
<FONT COLOR="#000000"> return obj(*args)</FONT>
<FONT COLOR="#000000"> File "/usr/local/zope/3.3/lib/python/zope/formlib/form.py", line 751, in __call__</FONT>
<FONT COLOR="#000000"> self.update()</FONT>
<FONT COLOR="#000000"> File "/usr/local/zope/3.3/lib/python/zope/formlib/form.py", line 732, in update</FONT>
<FONT COLOR="#000000"> result = action.success(data)</FONT>
<FONT COLOR="#000000"> File "/usr/local/zope/3.3/lib/python/zope/formlib/form.py", line 582, in success</FONT>
<FONT COLOR="#000000"> return self.success_handler(self.form, self, data)</FONT>
<FONT COLOR="#000000"> File "/var/local/zope/3.3/lib/python/ulthar/forms/forms.py", line 104, in handle_edit_action</FONT>
<FONT COLOR="#000000"> self.edit_action(action,data)</FONT>
<FONT COLOR="#000000"> File "/var/local/zope/3.3/lib/python/ulthar/forms/forms.py", line 107, in edit_action</FONT>
<FONT COLOR="#000000"> if not self.edit(action, data):</FONT>
<FONT COLOR="#000000"> File "/var/local/zope/3.3/lib/python/usf/news/browser/event.py", line 85, in edit</FONT>
<FONT COLOR="#000000"> location.locate(event.image, event, 'image')</FONT>
<FONT COLOR="#000000"> File "/usr/local/zope/3.3.0/lib/python/zope/location/location.py", line 71, in locate</FONT>
<FONT COLOR="#000000"> object.__parent__ = parent</FONT>
<FONT COLOR="#000000">ForbiddenAttribute: ('__parent__', <gallery.photo.Photo object at 0xa678f62c>)</FONT>
</PRE>
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<BR>
Hi,<BR>
<BR>
I finally solved this stupid problem by myself...<BR>
Switching "location.locate" method call from "EditForm" view to "Event" class was just enough...<BR>
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<BR>
Thierry Florac<BR>
-- <BR>
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Chef de projet intranet/internet<BR>
Office National des Forêts - Département Informatique<BR>
2, Avenue de Saint-Mandé<BR>
75570 PARIS Cedex 12<BR>
Mél : thierry.florac@onf.fr<BR>
Tél. : +33 01.40.19.59.64<BR>
Fax. : +33 01.40.19.59.85
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