Re: [Zope3-Users] view vs page confused
Hi, On Tue, Mar 27, 2007 at 06:03:54PM +0200, Dominique Lederer wrote: [snip] so if i create a class which inherits from BrowserView, and then register it via zcml as browser:page, it becomes adaptes to IBrowserRequest an turns to a BrowserPage (via the on-the-fly created class)? so inheriting from BrowserPage instead from BrowserView would make no sense with my example? It doesn't event make sense to inherit from BrowserView because a browser:page-registered view-class is just a mixin. A class like this is enough: class MyView(object): def mySpecialMethod(self): [...] [...] browser:page class=.views.MyView [...] / Regards, Frank ___ Zope3-users mailing list Zope3-users@zope.org http://mail.zope.org/mailman/listinfo/zope3-users
[Zope3-Users] fine grained subscriber
Hi, I'm writing an event subscriber to the IIntIdRemoveEvent event type. It looks like this: def intIdRemovedSubscriber(event): if IMyInterface.providedBy(event.object): # do some stuff with event.object and the zcml: subscriber handler=.intIdRemovedSubscriber for=zope.app.intid.interfaces.IIntIdRemovedEvent / But I'd like to avoid the if clause inside my subscriber function by doing something similar to this: def intIdRemovedSubscriber(obj, event): # do some stuff with obj, which is garanteed to provide IMyInterface subscriber handler=.intIdRemovedSubscriber for=.interfaces.IMyInterface zope.app.intid.interfaces.IIntIdRemovedEvent / But when doing this second aproach my subscriber is not called. I supposed I could do this by looking in the zope source code and finding this in zope.app.intid.__init__.py @adapter(ILocation, IObjectRemovedEvent) def removeIntIdSubscriber(ob, event): # and subscriber handler=.removeIntIdSubscriber / So the question is: why the intid package is succesful in registering a subscriber only for ILocation objects and I can't do the same with IMyInterface objects? I want to avoid a lot of calls to my subscriber which will happend everytime an IntId is removed from *any* object. Thanks in advance Lorenzo Gil ___ Zope3-users mailing list Zope3-users@zope.org http://mail.zope.org/mailman/listinfo/zope3-users
Re: [Zope3-Users] fine grained subscriber
Hi, On Wed, Mar 28, 2007 at 12:16:23PM +0200, Lorenzo Gil Sanchez wrote: [snip] But I'd like to avoid the if clause inside my subscriber function by doing something similar to this: def intIdRemovedSubscriber(obj, event): # do some stuff with obj, which is garanteed to provide IMyInterface subscriber handler=.intIdRemovedSubscriber for=.interfaces.IMyInterface zope.app.intid.interfaces.IIntIdRemovedEvent / [snip] So the question is: why the intid package is succesful in registering a subscriber only for ILocation objects and I can't do the same with IMyInterface objects? I want to avoid a lot of calls to my subscriber which will happend everytime an IntId is removed from *any* object. [snip] You need a dispatcher - a quite common concept in zope3: [events.py, not tested] from zope.event import notify def removeIntId(event): notify(event.object,event) def addIntId(event): notify(event.object,event) [configure.zcml, not tested] [...] subscriber for=zope.app.intid.interfaces.IntIdAddedEvent handler=.event.addIntId / subscriber for=zope.app.intid.interfaces.IntIdRemovedEvent handler=.events.removeIntId / [...] Thanks to zope3's component infrastructure, a package (like intid) doesn't have to provide the dispatcher - a different package providing the dispatcher is perfectly fine. Regards, Frank ___ Zope3-users mailing list Zope3-users@zope.org http://mail.zope.org/mailman/listinfo/zope3-users
[Zope3-Users] problems with catalog: indexing field from an objects adapter
hi, I want to index a field from an object, which works perfectly via Catalog and Field Index. But if my callable field returns a value, which is returned from an adapter of the object, things get complicated for me: i create my object an add it to a container (not via zmi). i do the notify(ObjectCreatedEvent(container[myobjectname]) thing, to let the intid and catalog do their indexing stuff. i look at the Catalog statistics in the zmi, where is see, that one item is indexed. but when i delete the object (i used notifiy(ObjectRemovedEvent(container[myobjectname])), there is still something residing in the index, which causes a KeyError in the intid utility, when it trys to getObject. It seems, that the index is indexing the object and the adapter via the same unique intid, and then deletes only the objects index, and not the adapter? since my adapter is only accessing annotations on the object, i could feed the index directly via the annotation value, but that goes against the use of adapters and the idea, not to change the object implementation. Do you have any idea, what i have to do? Did i forget an event? or something else? thanks cheers Dominique ___ Zope3-users mailing list Zope3-users@zope.org http://mail.zope.org/mailman/listinfo/zope3-users
Re: [Zope3-Users] fine grained subscriber
El mié, 28-03-2007 a las 13:39 +0200, Lorenzo Gil Sanchez escribió: El mié, 28-03-2007 a las 12:50 +0200, FB escribió: You need a dispatcher - a quite common concept in zope3: [events.py, not tested] from zope.event import notify def removeIntId(event): notify(event.object,event) I changed the removeIntId dispatcher to this code: def removeIntId(event): adapters = zope.component.subscribers((event.object, event), None) for adapter in adapters: pass # getting them does the work and now it works!! My subscriber is called only when an IntId is removed on objects that provide IMyInterface. Thanks a lot Mark, for showing me the right direction. Regards, Lorenzo ___ Zope3-users mailing list Zope3-users@zope.org http://mail.zope.org/mailman/listinfo/zope3-users
Re: [Zope3-Users] FieldIndex on boolean field - error
Hi,
On Wed, Mar 28, 2007 at 03:55:28PM +, Alek Kowalczyk wrote:
Hi,
I'm trying to index a boolean field of some object, to simplify retrieving all
the objects which have some flag turned on.
I am adding in proper place the index:
catalog['anomaly'] = FieldIndex('anomaly', IMyObject)
But then, when I try to get the objects using the following command, I get an
exception. Is FieldIndex able to index bool field? If not, how to create own
index for doing that?
anomalies = catalog.searchResults(anomaly=True)
[snip]
TypeError: len() of unsized object
A fieldindex always requires a lower and an upper boundary, found objects must
fit into.
Try
catalog.searchResults(anomaly=(True,True))
BTW: The error is raised because the fieldindex tries to interpret 'True'
as a tuple.
Regards,
Frank
___
Zope3-users mailing list
Zope3-users@zope.org
http://mail.zope.org/mailman/listinfo/zope3-users
