- Zope-Dev - Zope lists

Yay! :-)
by Chris Withers 07 Jan '02

07 Jan '02

Hey! Who sneaked the fix that lets you customise error messages for unauthorised exceptions into Zope 2.5? Well, whoever it was, a HUGE thankyou for fixign what was quite a nasty little wart... ...now if we could only get rid of that nasty appended traceback, my world would be a happy place :-) cheers, Chris

1 0

Broken link on your website
by Adam Brett 07 Jan '02

07 Jan '02

I noticed that your page: http://lists.zope.org/pipermail/zope-dev/2000-March/004014.html contained a link to: http://www.digicool.com/. The page at http://www.digicool.com/ cannot currently be accessed because of the following error: Connection Refused. We last examined your page on 09-28-2001. If your page has not been updated since 09-28-2001, your link is most likely currently broken. No one likes broken links on their website so we thought youd like to be the first to know. WHO ARE WE? Were Internetseer.com, the worlds largest FREE website monitoring service. One recent subscriber wrote the following; You did an awesome job identifying to me that our site went down and tracking it until it came back up again. HOW CAN OUR SERVICE BE FREE? Our service is supported by advertisers and subscribers who purchase additional services, but our basic service is FREE. Activating a free website monitoring account could not be easier. Click here for auto sign-up: http://scclick.internetseer.com/sitecheck/clickthrough.jsp?I5s57d5h5m5g5e5f… WHAT DO YOU GET FOR FREE? Well monitor your site once every hour, 24 hours a day, seven days a week for free. You can even have multiple people notified when we detect an error. In addition, youll receive a website performance report every week showing uptime percentages, average connect times, helpful links to others sites and of course promotions from our advertisers. You can cancel your free subscription at any time. This message is not spam because we are not trying to sell you a service. We are simply advising you that a link on your website is currently broken due to the error listed above. If you would like to subscribe to our free website monitoring service, please click on the following link: http://scclick.internetseer.com/sitecheck/clickthrough.jsp?I5s57d5h5m5g5e5f… If you do not wish to receive any further email messages from us, please click this link http://scclick.internetseer.com/sitecheck/cancel.jsp?GwNR75c_3niRJ5sGwNR5dI… or reply to this message with the word "cancel" in the subject line. We sincerely hope that youll become one of InternetSeer's 850,000 satisfied subscribers. Adam Brett Web Site Analyst InternetSeer.com "Free Website Monitoring" http://www.internetseer.com ##zope-dev(a)zope.org##

1 0

separate mailing list for ZPublisher-only apps (ZPub + cgi + apache)
by Michael Olivier 07 Jan '02

07 Jan '02

I'd like to form (or join) a separate mailing list for ZPublisher-only apps. I know there are zope developers like me who use ZPublisher + FastCGI (or whatever) + apache (or whatever) to run a web site. I know we would not have the benefit of some of the expertise here, but the flip side is we would get more discussion for our flavor of zope use. Most of the discussion here is about the full Zope which is a lot to wade through for the occasional helpful tidbit. If you are interested in such a mailing list, please drop me an email. thanks, Michael

2 1

_ (underscore) variable available in ZPublisher-only apps?
by Michael Olivier 06 Jan '02

06 Jan '02

Is the _ variable available to ZPublisher-only apps (not full-up zope) in DTML? I've tried <dtml-var "_"> (inserts nothing) and <dtml-var "_.REQUEST"> (AttributeError exception on REQUEST) and various other things, but haven't found anything to work. Would be nice to have access in DTML to the request's namespace. thanks, Michael

1 0

References, persistence, BTrees
by Jeffrey P Shell 06 Jan '02

06 Jan '02

I'm experimenting with an event notification service based on a publish-subscribe model for some projects I'm working on. When a subscription comes in, a 'Subscription' object is made, that basically looks like this: class Subscription(Base): def __init__(self, subscriber, eventType, filter=None): self.subscriber = subscriber self.eventType = eventType self.filter = filter def __hash__(self): return hash(self.subscriber) & \ hash(self.eventType) & \ hash(self.filter) 'subscriber' is a reference to the subscribing object, and it's very likely to be to an object in the ZODB. Is it wise to have more than one persistent reference to a single persistent object? I swear that I had once heard Jim say (vocally) that you could do references like this in the ZODB now. I'm trying to avoid using Paths because objects have a tendency to move around[*], and I have performance concerns for a single event service object to have to call 'unrestrictedTraverse' to every subscriber. [*] (it's due to the annoyances with manage_beforeDelete() and friends that I'm writing this tool.) Second question: If I use the hash of the Subscription as a key, is there any advantages/disadvantages with using an IOBTree to hold Subscription objects instead of a PersistentMapping? Jeffrey P Shell, jeffrey(a)cuemedia.com

3 2

LDAP on Zope 2.5.0b2
by Peeyush Garg 05 Jan '02

05 Jan '02

Hi, Has anybody successfully installed LDAPUserFolder on Zope2.5.0b2 (on Linux). When I compile python-ldap module and install it alongwith LDAPUserFolder, it shows as a installed product in the Zope management screen, but when I try to connect to the LDAP server (openldap 2.0.18) also running on the same machine, it says 'connection settings not ok...'. Interestingly, when I install LDAPUserFolder on Zope 2.4.3 running on a WinNT 4.1 workstation and use the same connection settings, it connects successfully and I'm able to query the LDAP database. Any ideas why..?? ~Peeyush.

2 3

FreeBSD, Zope, and Python 2.1
by Matthew T. Kromer 04 Jan '02

04 Jan '02

For what it's worth: Today I helped Jens track down a problem under FreeBSD where Zope was crashing rendering a page which rendered successfully on other systems. It turns out that the default stack size for a thread under FreeBSD is 64K, and that's not enough stack space to render this particular page of his (a Tracker page) -- most likely due to changes with how the RestrictedPython compiler is used/invoked by DTML processing, since this represents a big change from Zope 2.3. The solution we used was modifying Python/thread_pthread.h and the PyThread_start_new_thread function; specifically, instead of using a (pthread_attr_t *) NULL, we made a new attribute instead: pthread_attr_t pta; pthread_attr_init(&pta); pthread_attr_setstacksize(&pta, (1<<17)); and using &pta in the thread creation function rather than NULL. Recompiling Python 2.1 with changes gives it a 128K stack per thread, which seemed sufficient to render the Tracker page in question. Does anyone know of a better way to tune thread stack sizes on FreeBSD?

1 0

security.declareProtected doesn't always work?
by Martijn Faassen 04 Jan '02

04 Jan '02

Hi there, I have some issues with using declareProtected() outside product classes (deriving from ObjectManager or SimpleItem). An external method example that _does_ work, taken from the ZDG: import Globals import Acquisition from AccessControl import ClassSecurityInfo class Book(Acquisition.Implicit): def __init__(self, title): self._title=title # Create a SecurityInfo for this class security = ClassSecurityInfo() security.declareObjectPublic() security.declarePublic('getTitle') def getTitle(self): return self._title Globals.InitializeClass(Book) # The actual external method def GetBooks(self): books=[] books.append(Book('King Lear')) books.append(Book('Romeo and Juliet')) books.append(Book('The Tempest')) return books Now replace the line "security.declarePublic('getTitle')" with something like "security.declareProtected('View', 'getTitle')", and suddenly nobody is allowed to call getTitle() on a Book object anymore. This doesn't only occur in external method code, but also in product code, which is where I ran into it. Take for instance this class: class TOCEntry(Acquisition.Implicit): security = ClassSecurityInfo() security.declareObjectPublic() def __init__(self, id): self.id = id security.declareProtected('View', 'render') def render(self): """Render entry. """ return self.id Globals.InitializeClass(TOCEntry) 'render()' can now never be called from a DTML method or a ZPT template, while using 'security.declarePublic('render') does work. One gets errors like this: """ Error Type: Undefined Error Value: You are not allowed to access render in this context not found in 'entry/render', at line 8, column 3 """ which doesn't look very grammatical either. :) I haven't been able to figure out what causes the difference; classes that are initialized with Zope don't seem to have this problem, but this little class does. I've tried inheriting from Persistent or SimpleItem.Item but that doesn't seem to make any difference.. So what's going on? Am I missing something? If so, where is this documented? Martijn

4 6

Python Conference
by Joya Subudhi 03 Jan '02

03 Jan '02

Python 10 Conference News Python 10 is just around the corner. Register today and save with EARLY BIRD REGISTRATION RATES. This early bird offer ends on January 7, 2002. To register, go to http://www.python10.org/p10-regInfo.html The Python 10 GROUP RATE at the Hilton Alexandria Mark Center is only guaranteed until January 11, 2002. For information on room rates and reservation procedures, please go to http://www.python10.org/p10-hotelInformation.html Feature Presentation: Developers' Day opens with the "State of the Python Union" Address by Guido van Rossum Birds-of-a-Feather: Python 10 is now calling for your Birds-of-a-Feather (BoF) submissions. To propose a BoF, please go to: http://www.python10.org/p10-callBoFs.html The Tenth International Python Conference, February 4 - 7, 2002 The Hilton Alexandria Mark Center, Alexandria, Virginia http://www.python10.org Silver Sponsor: Hostway Corporation: http://www.hostway.com Silver Sponsor: New Riders Publishing: http://www.newriders.com Exhibitor: Archaeopteryx Software: http://www.archaeopteryx.com

1 0

100% FREE WEBCAMS
by RachGurl 03 Jan '02

03 Jan '02

Hello :) Come watch me and my friends experimenting live on webcam... Everything is free and live at http://webcams.freecamgirls.net !! -------------------------------------------------------- All Free Webcams - All Live - All the time!! http://webcams.freecamgirls.net <a href="http://webcams.freecamgirls.net">http://webcams.freecamgirls.net</a> YOU COULD WIN $10,000 FOR BECOMING A FREE MEMBER -------------------------------------------------------- Cancel subscription: NoMoreRach(a)cammgirlsboner.ca

1 0