[Zope3-Users] Utilities
What is the best to find the nearest utility without using a name? zapi.getUtility() seems to require a name (though the documentation implies otherwise). zapi.getAllRegisiteredUtilitiesFor() works but it seems to me if you have lots of utilities in other contexts, it would query those as well, and thereby be slow in a large application. I come across this problem frequently and haven't figured out the best way to deal with it. ___ Zope3-users mailing list Zope3-users@zope.org http://mail.zope.org/mailman/listinfo/zope3-users
Re: [Zope3-Users] Utilities
Am Montag, 5. Juni 2006 08:14 schrieb David Johnson: What is the best to find the nearest utility without using a name? zapi.getUtility() seems to require a name (though the documentation implies otherwise). zapi.getAllRegisiteredUtilitiesFor() works but it seems to me if you have lots of utilities in other contexts, it would query those as well, and thereby be slow in a large application. getUtility does not require a name. Example: from zope.app.zapi import getUtility from zope.app.homefolder.interfaces import IHomeFolderManager hfm = getUtility(IHomeFolderManager) Regards, Florian I come across this problem frequently and haven't figured out the best way to deal with it. ___ Zope3-users mailing list Zope3-users@zope.org http://mail.zope.org/mailman/listinfo/zope3-users
Re: [Zope3-Users] Utilities
On Mon, Jun 05, 2006 at 01:14:58AM -0500, David Johnson wrote: What is the best to find the nearest utility without using a name? zapi.getUtility() seems to require a name (though the documentation implies otherwise). The default name is ''. If you're asking for z.c.getUtility(ISomething), you'll get that -- the nearest utility with a given interface and name ''. These used to be called services three years ago. zapi.getAllRegisiteredUtilitiesFor() works but it seems to me if you have lots of utilities in other contexts, it would query those as well, and thereby be slow in a large application. I come across this problem frequently and haven't figured out the best way to deal with it. If you want to get all utilities with a given interface, use z.c.getUtilitiesFor(ISomething). You'll get the nearest utility with each given name. Albertas signature.asc Description: Digital signature ___ Zope3-users mailing list Zope3-users@zope.org http://mail.zope.org/mailman/listinfo/zope3-users
[Zope3-Users] testing using placefulSetUp, zcml and events
Hi, I have a content object I want to set up in a IObjectCreatedEvent event handler. I want to use the interactive interpreter to play with this, but it looks like my configure.zcml is not parsed and executed if I use placefulSetUp. How do I have to setup my environment to test zcml configured events from command line? Basically I want to write something like some_setup_method() root[ws]=Workspace() # should trigger and handle IObjectCreatedEvent for key in root[ws).keys(): print key to check if the object is setup correctly. regards, Achim ___ Zope3-users mailing list Zope3-users@zope.org http://mail.zope.org/mailman/listinfo/zope3-users
Re: [Zope3-Users] Found a (perhaps obvious) page template speedup
Stephan Richter wrote: The point is that I am not interesting in supporting the ZMI at all. I have no use for users or developers to ever use the ZMI. In fact, basing my skin on the ZMI is bad because it provides all those URLs I (a) do not have control over -- thus being a security risk, and (b) are not needed and make the system slower. This is stupid. One of the big wins for Zope 3 was that you were supposed to be able to re-use UI code without having to write it all from scratch. The ZMI has a lot of widgets that people should want to re-use (generically: tree controls, file widgets, directory listings, etc, specifically: forms and configuration for the generic parts of zope) It sounds like you're advocating writing every bit of UI from scratch, as you have to in Zope 2 due to the hard-coded nature of the ZMI, but I'm hoping I'm mistaken... Am I? Chris -- Simplistix - Content Management, Zope Python Consulting - http://www.simplistix.co.uk ___ Zope3-users mailing list Zope3-users@zope.org http://mail.zope.org/mailman/listinfo/zope3-users
Re: [Zope3-Users] Utilities
getUtility does not require a name. I've tried getUtility() without a name it never returns an interface and returns component lookup error. I've tried in many different instances, and I've ended up reverting as a work around to getAllRegisteredUtilitiesFor(), which works just fine. Once I add the name it works great. What am I missing? Is there some other requirement? My code looks the same as what you've listed. The documentation implies that it does not need a name. Is this a possible Zope 3 version issue or bug? ___ Zope3-users mailing list Zope3-users@zope.org http://mail.zope.org/mailman/listinfo/zope3-users
Re: [Zope3-Users] Found a (perhaps obvious) page template speedup
Chris Withers wrote: The ZMI has a lot of widgets that people should want to re-use (generically: tree controls, file widgets, directory listings, etc, specifically: forms and configuration for the generic parts of zope) It sounds like you're advocating writing every bit of UI from scratch, as you have to in Zope 2 due to the hard-coded nature of the ZMI, but I'm hoping I'm mistaken... Am I? Widgets are in zope.app.form.browser, and those can be use independently of ZMI Forms are in zope.formlib (or zope.app.form), again independent of ZMI Want menus? Again, they are *used* by ZMI but you can define your own with the same machinery.. ___ Zope3-users mailing list Zope3-users@zope.org http://mail.zope.org/mailman/listinfo/zope3-users
Re: [Zope3-Users] Utilities
Thanks! That's it exactly! I was misunderstanding the concept of a
utility with the name ''.
On Mon, 2006-06-05 at 17:34 +0300, Albertas Agejevas wrote:
On Mon, Jun 05, 2006 at 09:22:13AM -0500, David Johnson wrote:
getUtility does not require a name.
I've tried getUtility() without a name it never returns an interface and
returns component lookup error.
Because you haven't registered a single utility with the given
interface and name ''!
I've tried in many different instances,
and I've ended up reverting as a work around to
getAllRegisteredUtilitiesFor(), which works just fine.
getAllRegisteredUtilitiesFor returns even the utilities that are
overriden by closer utilities with the same name and interface.
Once I add the name it works great. What am I missing? Is there
some other requirement? My code looks the same as what you've
listed.
I suspect you expect getUtility(ISomething) to return a utility with
*any* name of that interface (that's what
get(AllRegistered)UtilitiesFor() does). But getUtility(ISomething)
returns just the utilities with the name you've passed ('' by default).
I think I already explained that in my previous email.
Albertas
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Re: [Zope3-Users] Time Zones/Internationalization
Hi David. pytz is a standard python package included in zope that can help you manage time zone issues. There are methods to represent time that is properly offset according to a large database of global timezones. This will help you present the view of time you wish to your application's users. Refer to the documentation in the package to give you an idea of what is possible. Regards, David David Johnson wrote: How do you deal with time zones in your applications, in regards to dates and times entered by users of the application. For example consider a content object that represents a store, and includes the store hours. A store owner may enter their opening ours as 0800 in their timezone. Do you store this as 0800? How does locale fit in both in terms of store owners and store customers (who may be in different time zones)? ___ Zope3-users mailing list Zope3-users@zope.org http://mail.zope.org/mailman/listinfo/zope3-users ___ Zope3-users mailing list Zope3-users@zope.org http://mail.zope.org/mailman/listinfo/zope3-users
Re: [Zope3-Users] Custom index implementation
Achim Domma wrote: Hi, I try to implement a custom index to be inserted into a catalog. I look at the code and it seems to me, that I only have to derive my interface from ICatalogIndex. I have defined my interface like this: class ITestIndex(zope.app.catalog.interfaces.ICatalogIndex): pass Then I have implemented a class which implements this interface and have it registerd like this: class class=.Workspace.TestIndex require permission=zope.ManageServices interface=.interfaces.ITestIndex zope.index.interfaces.IStatistics set_schema=.interfaces.ITestIndex / /class If I restart zope and go to my catalog, I still can only add FieldIndex and TestIndex. What else do I have to do, to implement a custom index? You need to specify an addMenuItem directive and associated view in your package browser zcml to enable you to add your index objects via the ZMI. Look at zope/app/catalog/browser/configure.zcml as a starting point, e.g. addform name=AddTestIndex label=Add a test index schema=..interfaces.ITestIndex permission=zope.ManageServices content_factory=..WorkSpace.TestIndex arguments=field_name keyword_arguments=interface field_callable / addMenuItem title=Test Index description=My Test Index class=..Workspace.TestIndex permission=zope.ManageServices view=AddTestIndex / ___ Zope3-users mailing list Zope3-users@zope.org http://mail.zope.org/mailman/listinfo/zope3-users
Re: [Zope3-Users] Time Zones/Internationalization
That's great! That does seem to figure that out. The secrets of Zope. On Mon, 2006-06-05 at 18:53 -0300, David Pratt wrote: Hi David. pytz is a standard python package included in zope that can help you manage time zone issues. There are methods to represent time that is properly offset according to a large database of global timezones. This will help you present the view of time you wish to your application's users. Refer to the documentation in the package to give you an idea of what is possible. Regards, David David Johnson wrote: How do you deal with time zones in your applications, in regards to dates and times entered by users of the application. For example consider a content object that represents a store, and includes the store hours. A store owner may enter their opening ours as 0800 in their timezone. Do you store this as 0800? How does locale fit in both in terms of store owners and store customers (who may be in different time zones)? ___ Zope3-users mailing list Zope3-users@zope.org http://mail.zope.org/mailman/listinfo/zope3-users ___ Zope3-users mailing list Zope3-users@zope.org http://mail.zope.org/mailman/listinfo/zope3-users
[Zope3-Users] IEndRequestEvent question
Hi, I'd like to ask several questions about IEndRequestEvent, like : - when is this event actually fired ? - what can be done exactly after this event is fired (still query components, update database...) ? - if possible, are modifications done after this event integrated into the main transaction ? My goal is to use request annotations to reference several objects that should be treated after the main request process is done, and then to subscribe to this event to fire these final modifications (so that, for example, IObjectModifiedEvent is not fired too many times). Is it the good approach ? Thanks for any help, Thierry -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. ___ Zope3-users mailing list Zope3-users@zope.org http://mail.zope.org/mailman/listinfo/zope3-users
