November 2001 - Zope

Re: [Zope] Zope-WebDAV
by mbagepll＠memphis.edu 01 Nov '01

01 Nov '01

I have sent the output of the logger in my previous mail, as you wanted me to send. I have not received any suggestion after that. Please let me know what is wrong with the Zope-WebDAV. Hope to receive an immediate reply. --Madhavi

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Re: replicating stand-alone applications
by Paul Winkler 01 Nov '01

01 Nov '01

Jerry, I'm CC'ing the mailing list. I'm not a rocket-scientist expert on this stuff, maybe somebody else could help with things I miss. On Thu, Nov 01, 2001 at 04:32:51PM -0000, 1jerry(a)usd1.com wrote: > The current Ap loads the pickle file (which has class instances in > it), loads an additional scripting file, loads an input file (usually > .txt), then does all the processing using MetaKit. Once I created > the Product, would all I need to do is change the load (from cPickle > to reading from ZODB) to get the whole process to run from an > External Method? Yes, or from a DTML page, or Script (Python)... To get started with product programming, the Boring and Minimal products are useful. > I would like the option of running (for testing) > from within Zope, updating a local MetaKit file on the server. > > detours: I attempted to create an External Method to read the pickled > data and make it available in a namespace in Zope, just trying to > print from my ap corrupted the data.fs file: > def load(): > import myapplication > myinstance = myapplication.load('test.pkl') > print myinstance # prints facts about itself > Clicking on 'test' for this External Method produced various results That should work. You should see the printed output on the console where you started Zope. If you want to see it in your browser, replace the last line with something like: return str(myinstance) > - namely, unable to import modules within myapplication What error did you get? Does the user that runs Zope have these modules on PYTHONPATH? If not, edit your Zope start script to add to the PYTHONPATH. The following works for me: 1) Create a module on my PYTHONPATH: # foo.py class Foo: def __init__(self, data): self.data = data def __repr__(self): return repr(self.data) def __str__(self): return str(self.data) 2) Create a file in my Zope installation's Extensions directory: #foo_extmeth.py import foo def load_foo(): f = foo.Foo('hello, world!') return str(f) 3) In the Zope management interface, add an External Method: id: load_foo Title: Test the Foo class. Module Name: foo_extmeth Function Name: load_foo 4) Save the External Method, then click on the Test tab. My browser now shows: hello, world! 5) Changes to your external method will be reflected immediately in a running Zope. However, changes to your imported classes do NOT show up unless you restart zope *OR* add a reload(foo) statement to your external method AND click on "Save Changes" in the ZMI for the external method. It seems the reload isn't triggered until you do "Save Changes", I don't know why. > and after > much experimenting, it overwrote some of my folder icons (never did > run). I have no idea how you did that. {:-/ > I found little (and conflicting) documentation on External > Methods. Will creating a Product work without using External Methods? Yes. The two are completely independent. I get the feeling you're not clear on the various ways to write python code for Zope. There are four ways: 1) Simple expressions embedded in DTML or ZPT. Obviously this is very limited. 2) Python Script (aka Script (Python)). THese are objects that live in the ZODB and provide a single method or function each. Due to security concerns, there are strict limitations on what modules you can use in a Python Script. 3) External Method. A file on the filesystem, usually in your Extensions directory under the zope installation, can contain one or more functions, each of which can be loaded into zope as an External Method. These are used just like Python Scripts without the restrictions on importing. But objects created by an External Method are not automatically persistent - new instances will be created at each call, and if Zope should happen to restart in the middle of a session, the user will have to start over. 4) Product. This provides a way to extend Zope with persistent objects that can be added from the Zope management interface and define management methods for instances (e.g. instantiate, modify, delete). There are no restrictions on python code you can write in a Product. A Product's code can contain calls to other Zope objects written as DTML, External Methods, Python Scripts, anything it needs. THese are all just objects in Zope, and the calling object shouldn't need to know what kind of method it's calling. The only restrictions are the same as for any Zope object: the caller must be able to find the callee (via acquisition if necessary), and the zope user must have appropriate permissions. If you don't need your instances to be persistent, then you don't really need a Product and should be able to do everything with External Methods. > detour 2: tried XML-RPC to access Zope from Python, using xmlrpclib > with and without BasicAuthTransport mod. Creating the connection > was no problem. Every time I attempted to access anything, (lists, > page source) it returned a string with HTML code for HTML, HEAD, etc > as an invalid exception string. Does XML-RPC work with 2.4.1? What > could be wrong? Sorry, I've never tried XML-RPC. This is a question for the zope list. -- paul winkler home: http://www.slinkp.com music: http://www.reacharms.com calendars: http://www.calendargalaxy.com

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CoreSession Urgent !!!
by michael kobald 01 Nov '01

01 Nov '01

Hi, i am have a big Problem with CoreSession 0.9 (Zope 2.3.3 Win2000 Server). I have 2 Session Data Mangers (dieter and session_mgr). I i want call the getSessionData() of them both method in 1 Transaction. Via calling foo3 I get the error msgs below. I need to call both Data Mangers in 1 Transaction ! By the way: Zope 2.4.2 hangs for the rest of his live after the 2. calling of foo3 Please Help michael Code: def a(self): """khjkjh""" data = self.dieter.getSessionData() data.set('dfd', 'dsd') return None def b(self): """hjhjh""" data2 = self.session_mgr.getSessionData() return None def foo3(self, REQUEST): """hhjh""" #return "dgffdg" c = self.a() #get_transaction().commit(1) d= self.b() #data = self.session_mgr.getSessionData() return "huhuh" First Call Error Type: error Error Value: release unlocked lock Traceback (innermost last): File E:\Beehive\TeDeLine\lib\python\ZPublisher\Publish.py, line 223, in publish_module File E:\Beehive\TeDeLine\lib\python\ZPublisher\Publish.py, line 187, in publish File E:\Beehive\TeDeLine\lib\python\Zope\__init__.py, line 221, in zpublisher_exception_hook (Object: Traversable) File E:\Beehive\TeDeLine\lib\python\ZPublisher\Publish.py, line 175, in publish File E:\Beehive\TeDeLine\lib\python\Zope\__init__.py, line 235, in commit File E:\Beehive\TeDeLine\lib\python\ZODB\Transaction.py, line 335, in commit File E:\Beehive\TeDeLine\lib\python\ZODB\Connection.py, line 657, in tpc_finish File E:\Beehive\TeDeLine\lib\python\ZODB\BaseStorage.py, line 219, in tpc_finish (Object: SessionStorage) error: (see above) Second Call: Error Type: TransactionErrorError Value: A serious error, which was probably a system error, occurred in a previous database transaction. This application may be in an invalid state and must be restarted before database updates can be allowed. Beware though that if the error was due to a serious system problem, such as a disk full condition, then the application may not come up until you deal with the system problem. See your application log for information on the error that lead to this problem.

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Re: ZopeTime Error
by Dave Lehman 01 Nov '01

01 Nov '01

--- In zope@y..., Mike Doanh Tran <mtran@s...> wrote: > I tried your suggestions. I gave my defined user the same permission setting > in the security tab as the Manager Role( basically everything). But i still > get the same error. The ZopeTime() method is a call to the python DateTime > Object, it does not relate to my installed Product. > > I am running Zope 2.4.1 on Redhat 7.1 with Python 2.1.1 using Apache rewrite > engine rule . I added a "User Defined Role" in the security tab. Could it > be that my Defined User does not have the permission to call the python's > ZopeTime().Date()? Does the linux permission on /usr/local/zope/lib/python > have to set to a certain RWE by the webserver? Does anyone knows? > Thanks for any suggesstions. I'm having a very similiar problem with ZopeTime errors. I gave me "Member" role all the rights I could find, but it still doesn't work. However, if I assign that user "Manager" access explicitly, then it doesn't complain about "ZopeTime". I'm running Zope 2.4.0 under Linux and using Apache rewrite. My ISP setup Zope initially, so i'm assuming (yeah, yeah, "ass of of you and me") that he setup the permissions properly. Did you figure out anything on how to solve this? I know that if I use the "proxy" tab in Zope to assign Manager access to all my methods, it seems to work, but this is an ugly workaround, not a real solution to the problem at hand. Any advice or ideas you have would be much appreciated. --dave

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RE: [Zope] RE: "ZopeTime" not defined error?
by Dave Lehman 01 Nov '01

01 Nov '01

Thanks for the advice. I hadn't thought of doing this, and it definately works around the problem. My bigger problem and concern is that i'm suddenly getting several of these "ZopeTime" errors, and i'm not sure where they are stemming from. I have developed lots of methods using "portal_catalog.searchResults" which all seem to fail (in you're not a Manager) with this same "ZopeTime" error. Do I have to proxy *all* of the methods as Manager access? This doesn't seem right to me-- is there some other security setting in Zope/CMF that I don't know about, or have not set correctly? So now I understand how to work around this issue-- assign Manager proxy rights to all my methods. But this is treating the symptom, and not the root problem. What I still want to know is this: where does the "ZopeTime" error stem from? Why is Manager-level access required to access the ZopeTime variable? I haven't been able to find specific mention of this requirement anywhere, which still makes me think i'm doing something instrinsically wrong in either my Zope or CMF configuration/implementation. --dave On 11/01/2001 07:50:38 AM Jeffrey Robinsonwrote: >Instead of assigning users the "Manager" rights to your method that calls >ZopeTime (via the proxy tab). > >You can read more about proxies in the documentation on the zope.org site. > >Jeff > >> -----Original Message----- >> From: Dave Lehman [SMTP:davelehman@loewen.com] >> Sent: Wednesday, October 31, 2001 4:21 PM >> To: zope(a)zope.org >> Subject: [Zope] RE: "ZopeTime" not defined error? >> >> Alright, I figured out that if I assign a user "Manager" rights, then my >> custom "login_form" works. However, it does *not* work if I go to my root >> Portal folder security tab and assign all rights to the "Member" role. >> >> So does the "manager" role have other instrinsic rights? Obviously I can't >> give everyone manager rights, just to work around this issue. >> >> If I stick the "login_form" in my "custom" skin folder, where would it be >> trying to access "ZopeTime" from that is different than the "generic" >> folder? And why does it think ZopeTime is not defined? >> >> --dave >> >> >> >> _______________________________________________ >> Zope maillist - Zope(a)zope.org >> http://lists.zope.org/mailman/listinfo/zope >> ** No cross posts or HTML encoding! ** >> (Related lists - >> http://lists.zope.org/mailman/listinfo/zope-announce >> http://lists.zope.org/mailman/listinfo/zope-dev )

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Why do 95% of internet business fail & only 5% succeed
by Shaun 01 Nov '01

01 Nov '01

Dear Entrepreneur: Can you honestly say that you're earning the type of income you thought you would when you first began your networking career? Unfortunately, the history of networking says that there's a 95% chance you are not earning what you would like to earn. How many different opportunities have you been involved with? How many times have you thought, "This is the one"? If you are one of the 5% of networkers who is earning a good income, what about your team? How many of them are successful? Regretfully, you know the answer to that question as well as we do....VERY FEW! Does it bother you to know that as many as 95% of the people in your group won't even recover what they have paid to get involved? It DOES NOTT MAKE SENSE, DOES IT? How can so many people who have been successful in other walks of life, fail so miserably in networking? The Answer: Network marketing for the most part, is based on the theory of "Internal Consumption." That is, the VAST majority of the company's products are purchased and consumed by distributors, NOT real customers! Let me ask you: How many supermarkets, department stores, car dealerships, etc., do you think would survive if they depended PRIMARILY on purchases by their employees of the company's products to keep them in business? As the same rule applies in the real world of business ... It is the same with networking and home-based business. A 95% failure rate makes this clear. Even networking companies that are truely product and consumer driven find many of their distributors failing. Why? Because people simply DO NOT LIKE TO SELL! Unfortunately, for 90% or more of the distributors in any typical network marketing company, it DOESN'T MATTER how great their products are supposed to be, or how fantastic the comp plan is, or how strong the company and management team are... The VAST MAJORITY of distributors WILL STILL FAIL because people simply DO NOT LIKE TO SELL!! You nor I will EVER change that part of human nature for the masses. Is there an answer? Yes, there is, but you won't find it in any Network Marketing training manual. Unfortunately, most company owners and their top leaders already know that the vast majority won't be successful. Yet, we continue to see company after company spring up with more rhetoric, promises, etc. Why? Because the ONLY people who are guaranteed to earn any significant income if the company lasts, are the owners and their top people. Sorry, but the truth is the truth! Forget the rhetoric we're now hearing about selling online because, once again, in the year 2000, more than 90% of all online businesses DIDN'T MAKE A PROFIT! The sad part is, if we continue to do the same things over and over again that have only produced failure in the past, the result will always be the same: MORE FAILURE. While a quality product, good compensation, a strong management team, and a financially sound company are all important to the success of any company, none of these factors can replace the single most important feature that a networking company MUST HAVE ... The average person must have a chance of finding LONGTERM success. Does this mean that networking is bad? Not at all. What it does mean is that the way networking has been historically promoted for years with the emphasis on "internal product consumption" (where the distributors purchase the vast majority of products for personsal use) will continue to produce a 95% failure rate. We have a solution that works for anyone who is willing to work steadily, is consistent, and can read and follow a very simple system that was designed for beginners. This system has proven successful every time over the years for those who followed it. If you would like to experience results in your life, email us at < sean_stamm(a)yahoo.com > with "Information request" in the subject. Please include your name, country, and phone number so that we can send you the correct information. We will email you an introduction about our company and our entire system at no cost to you. We will not email you ridiculous promises, or UNPROVEN OR FAILED THEORIES...Just the facts! While no one can or should ever guarantee your success in any business, here's one thing we do promise you: The TRUTH and a system that will show you HOW TO DO THINGS STEP-BY-STEP!

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Re: [Zope] RE: CMF Newbie Presentation and Viewlet Info
by Stephan Goeldi 01 Nov '01

01 Nov '01

>And me prevents this funny technology from viewing the application I have to add here, that I originally tested the viewlets with Internet Explorer on Windows NT and Netscape on Linux. Usually Netscape is the sucking part (although I am a micros~1.oft hater). So when it works with Netscape AND IE, it is normally safe. But yes, Mozilla (Windows and Linux) asks for a Java Plugin. and Konqueror (Linux) which usually renders HTML as nice as MSIE doesn't find the Java program. Uaaaaaaaaah! _________________________________________________________________ Get your FREE download of MSN Explorer at http://explorer.msn.com/intl.asp

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Persistent form variables
by Steven Sartorius 01 Nov '01

01 Nov '01

Let me preface this by saying I'm a Zope newbie..... I've started to build a simple site with Zope but am at a crossroads. The initial page of the site is a form that would be filled in by a new visitor; someone who's been to the site before would see the data that they had last input. I don't want to use cookies, not everyone turns them on. Obviously some kind of data persistence is called for on the server side. My question is: is there an easy, idiomatic Zope way of doing this? Culling through the documentation ('The Zope Book', various How-To's) I've seen plenty of examples of creating persistent data with ZODB but all these examples focus on using ZODB outside the Zope framework. I guess I could write a Script/External Method to: 1) check for the existence of a database file; 2) create it if it doesn't exist; 3) check for the existence of user data; 4) display the data if exists; 5) display a blank form if there's no data for a user...etc, etc, etc. Is there an easier way to do this? A Product I don't know about or an elegant Zope trick? Any and all help appreciated.... thanks, Steve

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BerkeleyDB slow
by matt 01 Nov '01

01 Nov '01

Hi, I am finding that writes to the ZODB are far slower when the storage is BerkeleyDB instead of Data.fs. I should also mention that I run this through ZEO, if that has anything to do with it. I now have quite a few folders, some with up to 1000 objects in them. I know ZEO is not very write friendly, but if I switch the Storage back to main .. i.e. Data.fs(Still as a zeo client), and import data into it, then I find it is 5-10 times faster when doing something as simple as editing small dtml method. My current system is the following : Zope Version (Zope 2.4.0 (source release, python 2.1, linux2), python 2.1.0, freebsd4) Python Version 2.1 (#1, Jul 18 2001, 17:06:28) [GCC 2.95.3 [FreeBSD] 20010315 (release)] System Platform freebsd4 I was wondering if this behaviour was common. regards Matt

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RE: BOA Constructor, CST, and setDefaultAccess
by Jean Lagarde 01 Nov '01

01 Nov '01

Sorry, should have read my notes better before I sent the email... SessionIdManager also uses setDefaultAccess('deny'), and I had to comment that line out as well. > -----Original Message----- > From: Jean Lagarde [mailto:jean.lagarde@eer-rc.com] > Sent: Thursday, November 01, 2001 07:59 > To: 'zope(a)zope.org' > Subject: BOA Constructor, CST, and setDefaultAccess > > > Hi all, > > I was trying to play around with BOA Constructor, but > couldn't get into some Zope folders (BOA was throwing cryptic > errors at me). I found out that the problem was with the > latest version of core session tracking, which uses > "setDefaultAccess('deny')" in both sessionData and > sessionDataContainer. My quick fix was to comment these lines > out, which I assume is not the best solution, but it got me > going at least. > > CST is the only product I have that uses setDefaultAccess(). > > Anyway, just in case someone is interested to know (Chris?) > > Cheers, > > Jean >

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