May 2003 - Zope - Zope lists

RE: [Zope] Newbie: Location of External method files
by Passin, Tom 29 May '03

29 May '03

[Vern T Takebayashi] > A related question I have is about how Zope looks for > external methods. > It seems that Zope looks along a certain path, in a way that > is different > from normal acquisition traversal. i.e. you cannot simply locate the > external method in a parent folder and expect Zope to find > it. If someone > could explain how Zope searches for the external methods, I would > appreciate this greatly. > Zope looks for External Methods in the Extensions directory. Different developers could create enternal methods with the same names as long as they were in different __Zope__ folders (I mean the Zope objects, not the code for them in the Extensions directory in the file system), and if their Python code were in different python files in the Extensions directory. It is good practice, IMHO, to use the code in the Extensions directory only to invoke the actual Python code that does the real work. That code should live, I think, outside the Zope directory tree. That way you do not have to remember to copy it to any new Zope installation. For the function in the Extensions directory to find the real code, the real code needs to be on the Python path, preferably in its own package. There are many ways to get your code on the Python path. I personally like to use *.pth files, but there are several other methods. The main point to remember is that you need it to be on the Python path used by your Zope installation, not the Python path used by any other Python interpreters you may have on your system. This has bitten people from time to time. Cheers, Tom P

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Zope undo functionality (Slightly OT)
by Etienne Labuschagne 29 May '03

29 May '03

Sorry, this is slightly off topic, but just had to share this SPOT-ON description of Zope's undo functionality from the author of our custom CMF tutorial: This function should be used sparingly. A full actions history is kept and any mistake can be undone. Once a mistake is realised that cannot be undone by fixing it in the edit box, click Undo. The actions history's latest entries are at the top of the list, so if the mistake was made and it was realised immediately, that entry should still be at the top of the list, and the description next to it should give a reasonable indication as to whether this was the offending action. Simply tick its box and click Undo, and that entry will be reversed as if it had never happened. "Undo's" can also be undone, and the undo of an undo can be undone as well, so every Undo that is performed appears at the top of the Undo list, and can again be undone. In fact, it can get so confusing that it becomes one's undoing... That is why this function should be used sparingly!

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RE: [Zope] Zope an X server
by baiewola＠netscape.net 29 May '03

29 May '03

I have three machines running Zope 2.6.1 with Plone on OS X Server 10.2.6. System startup and Zope on my 500 Mhz Powerbook are slower than on my 500 Mhz desktop machine. My third desktop machine running Zope is a 1.25 GHZ DP, and startup time is approx 88 seconds. How does that compare with your 1 GHZ Powerbook and your Linux box? (Just out of curiousity.) X Serve should be better than any of these, especially on the bus speed and cache end. But I've no personal experience with Linux. Andreas Jung <andreas(a)andreas-jung.com> wrote: >--On Donnerstag, 29. Mai 2003 9:56 Uhr -0400 baiewola(a)netscape.net wrote: > >> >> It is "boring slow" compared to what? >> What machine models, software versions, and platforms are you comparing? >> Is this personal experience or heresay? >> > >On my Powerbook (G4, 1GHz) Zope is extremly slow on startup (that's a >FS issue. Also compared to standard Linux box (with 1.4 MHz or so) Zope >on MacOSX is much slower in terms of requests/second or indexing. > >-aj > >_______________________________________________ >Zope maillist - Zope(a)zope.org >http://mail.zope.org/mailman/listinfo/zope >** No cross posts or HTML encoding! ** >(Related lists - > http://mail.zope.org/mailman/listinfo/zope-announce > http://mail.zope.org/mailman/listinfo/zope-dev ) > __________________________________________________________________ McAfee VirusScan Online from the Netscape Network. Comprehensive protection for your entire computer. Get your free trial today! http://channels.netscape.com/ns/computing/mcafee/index.jsp?promo=393397 Get AOL Instant Messenger 5.1 free of charge. Download Now! http://aim.aol.com/aimnew/Aim/register.adp?promo=380455

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Re: RE: [Zope] Another import doesn't find the module
by Stacy Roberts Ladnier 29 May '03

29 May '03

Tom's solution has not worked. But he has offered me more help tomorrow to find a solution. >>Why not create a single >>product that can instantiate itself (or subobjects) more than one way? The product I am creating is more like an application. It has container objects at the top, and several subfolders that contain hundreds of objects that make up a 'record'. I guess you can say I have tons of data models to go in this application. My whole problem is trying to get things to instantiate more than one way. Once a user has created a record of type #1, he must have the ability to go back and add an extension of type A. In doing this, It alters the way type #1 initially existed. I can't force the user to create a record of tye #1 with the type A extension up front. If only it were that easy, I wouldn't be having such a pain. ----- Original Message ----- From: Dylan Reinhardt <zope(a)dylanreinhardt.com> Date: Wednesday, May 28, 2003 3:43 pm Subject: Re: RE: [Zope] Another import doesn't find the module > On Wed, 2003-05-28 at 12:33, Stacy Roberts Ladnier wrote: > > > > The line I had that read > > > > from Products.Resources.FGDC import profile > > > > failed. > > > > Before class1 of DISTINFO.py, I tried the above statement and > recieve > > a 'can't import name profile'. > > > > > > However, this line works like a charm: > > > > from Products.Resources.FGDC import DISTRIB > > > > and is located directly under the above line. Totally baffling me. > > Is the solution Tom gave you not working? > > > Distinfo #1 is in the FGDC directory. Distinfo #2 will > live in > > the extensions directory. I want to set of a script in the > scripts > > directory that will cause the #2 to be added. By the way, both > of these > > objects(#1 and #2) should have the same metatype. > > This sounds like a pretty brittle system. Why not create a single > product that can instantiate itself (or subobjects) more than one way? > > Dylan > >

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RE: [Zope] Zope an X server
by baiewola＠netscape.net 29 May '03

29 May '03

This is not my experience. I use it on OS X Server 10.2.6 and find it quite fast. My colleague just upgraded from some version of windoze server to OS X 10.2.6 (not server) and experienced a huge speed boost. It is "boring slow" compared to what? What machine models, software versions, and platforms are you comparing? Is this personal experience or heresay? Andreas Jung <andreas(a)andreas-jung.com> wrote: >It *runs* on MacOSX but I would not recommend it as production platform >since the Mac >filesystem is boring slow >-aj > >--On Freitag, 23. Mai 2003 9:22 Uhr +0200 Roel Van den Bergh ><roel(a)planetinterior.com> wrote: > >> I might be hadding for a new job. >> They are interested in implementing Zope in their corporate stucture, a >> mix of Sun, MacoS (version unknown), linux and WinNT. They are moving >> towards Xserver, on wich I have no impact. It seems they already ordered >> such a system. >> There they asked me if Zope runs on Xserver. >> Because I only have experiance running Zope on W2K and linux and I do not >> own a Mac for testing purposes I would like to hear some stories. I don't >> want to be caught spreading lies about Zope. >> >>> -----Original Message----- >>> From: Andreas Jung [mailto:andreas@andreas-jung.com] >>> Sent: Friday, May 23, 2003 9:14 AM >>> To: roel(a)planetinterior.com; zope(a)zope.org >>> Subject: Re: [Zope] Zope an X server >>> >>> >>> >>> >>> --On Freitag, 23. Mai 2003 9:05 Uhr +0200 Roel Van den Bergh >>> <roel(a)planetinterior.com> wrote: >>> >>> > Excuse me for the cross post >>> > >>> > Hi there, >>> > >>> > has anyone installed Zope on Xserve from Apple? >>> > I'd like to know if there are any issues I should take care of when >>> > installing Zope on a Xserver from Apple in the near future. >>> > >>> >>> What's the point with Xserve? Zope runs fine on MacOSX without >>> problems (10.2.6). >>> >>> -aj >>> >> >> >> >> _______________________________________________ >> Zope maillist - Zope(a)zope.org >> http://mail.zope.org/mailman/listinfo/zope >> ** No cross posts or HTML encoding! ** >> (Related lists - >> http://mail.zope.org/mailman/listinfo/zope-announce >> http://mail.zope.org/mailman/listinfo/zope-dev ) > > > > > >_______________________________________________ >Zope maillist - Zope(a)zope.org >http://mail.zope.org/mailman/listinfo/zope >** No cross posts or HTML encoding! ** >(Related lists - > http://mail.zope.org/mailman/listinfo/zope-announce > http://mail.zope.org/mailman/listinfo/zope-dev ) > __________________________________________________________________ McAfee VirusScan Online from the Netscape Network. Comprehensive protection for your entire computer. Get your free trial today! http://channels.netscape.com/ns/computing/mcafee/index.jsp?promo=393397 Get AOL Instant Messenger 5.1 free of charge. Download Now! http://aim.aol.com/aimnew/Aim/register.adp?promo=380455

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Version problems
by Cliff Ford 29 May '03

29 May '03

An eternity ago (20 May) I followed the exchange initiated by Ken Causey on problems in saving Versions. Having updated to the latest Zope version (2.6.2b1) I did not anticipate similar problems but regret to report I have suffered them. I am out of the hole and don't need help but thought it might be useful to report a few facts: I spent an evening making extensive revisions to a development site under version control - mostly moving folders and revising menus. I am pretty sure I was the only active user. Happy with may changes I saved them and left Version control (no error messages, everything apparently normal). None of the changes were visible to normal users! Out of Version control all the changes were marked as locked. In Version control all of the changes were visible. Saving produced the message "Nothing to Save". Very frustrating, and easy to understand Ken's swearing never to use Versions again. I got out of the hole by exporting the entire site, which is fortunately in a folder one level down from root. (I think I must have been in Version control but can't swaer to that.) I renamed the problem folder and imported the exported folder. That did the trick - I had all the changes I had made. Phew! Whilst poking around for a solution I noticed that my Version was not owned by me! I have a colleague who looks after hardware and software installation, the apache front end, rewrite rules and so on. A few weeks ago we decided to rename the site folder and he did that because it was associated with the rewrite rules. It turns out he probably did a copy and paste + rename to creat the folder with the new name whilst the old folder still existed. He seems to have become the owner of the new branch and all its sub-items. I don't know if this is the source of the problem with Versions, but I too am reluctant to use Version control again. Cliff

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RE: [Zope] Storing published objects (?)
by Samir Mishra 29 May '03

29 May '03

Thanks Dylan. I'll try this out. It 'looks' right for what I'm looking to do. Now to figure out the details... I'll have an umbrella script somewhere, triggered by an event, not sure what, to do the updates. Another suggestion made by 'zerkani_user_list' (name on email) is that I store the data to be published in a database, like a summary table in a DW, rather than the HTML code. I am looking into this approach as an alternative, but I feel storing the HTML is more suitable to the business logic in this instance. Ultimately it'll come down to a combination of suitability & convenience. Thanks to everyone. Regards, Samir. -----Original Message----- From: Dylan Reinhardt [mailto:zope@dylanreinhardt.com] Sent: Wednesday, May 28, 2003 19:05 To: Samir Mishra Cc: zope(a)zope.org Subject: RE: [Zope] Storing published objects (?) What you're describing could be done fairly easily with a Python product. ------ # untested, top-of-head, etc. class DeepCache(REGULAR_MIXINS): def __init__(self, id, title, object_path): self.id = id self.title = title self.obj_path = object_path self.results = self.refresh() index_html = DTMLFile('index', globals()) # points to a dtml file that consists of: # <dtml-var view> def view(self): return self.results def refresh(self): self.results = self.restrictedTraverse(object_path) ------ That's an incomplete product (no security, no constructor method, etc), but it's a decent sketch of a general-purpose object that will allow you to cache the output of any object you can put in the ZMI. This, of course, assumes that you want caching refreshed manually... automatically detecting when underlying data has changed is quite a bit more difficult and must be done in a target-specific way. If you're not updating too often, an approach like this should work fine... if your objects change with any frequency, you'll want to make sure to pack the ZODB pretty aggressively. HTH, Dylan On Tue, 2003-05-27 at 23:56, Samir Mishra wrote: > Jamie, > > Thanks for the response. I think you misunderstood my question. I'm not > looking to implement a cache manager. > > What I'm looking to do is, not store the page for a few minutes/hours, but > months. Or longer. I also want external apps to have access to the rendered > page. > > I have to generate weekly financial reports. The data for each report is > from NUMEROUS sources. So the query, formatting etc. are complex and time > consuming. The weekly report gets updated over the duration of the month, > but at the end of the month the report is frozen. So once the report is > published, it will almost NEVER be changed. We may publish corrections to > the report, but these will be labelled as corrections, and will not replace > the originally published document. > > I'd rather not have to re-create the report every time it's viewed. I'd > prefer to save the HTML representation of the report as a BLOB in a database > (and later extend this to PDFs of the same). And that's what I'm hoping to > do - assign the results of a page rendered by Zope, i.e., all of the HTML > generated, to a binary column in a DB. > > OT: I believe Berkeley DB is extremely fast for this sort of > indexing/retrieval. Anyone have any experience? > > Hope that's clearer. > > Thanks again. > > Samir. > > -----Original Message----- > From: Jamie Heilman [mailto:jamie@audible.transient.net] > Sent: Wednesday, May 28, 2003 08:25 > To: Samir Mishra > Cc: zope(a)zope.org > Subject: Re: [Zope] Storing published objects (?) > > > Samir Mishra wrote: > > The underlying SQL queries are complex, the data doesn't change often, and > I > > think this may be the best way to lighten the burden on the DB. > > Hmmm, well generally this is what CacheManagers do, but storing the > results in a database would be a new one (to date I've seen managers > that use memory, the filesystem, and just add HTTP headers to the > response). While its entirely likely you could achieve what you want > using a memory cache, if the data is sufficiently large it may be not > be a good idea, and its certainly not persistent accross > zope-restarts. Implementing a cache manager that stored its data in a > RDBMS shouldn't be impossible, take a look at the Cache & CacheManager > interfaces in OFS/Cache.py -- and I'd suggest using the updated code > I've prepared in http://collector.zope.org/Zope/911 as its cleaner > than the existing stuff.

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Problems with Zope
by yenny natalia pedraza 28 May '03

28 May '03

Hello!! I've any problems with Zope Products. 1. Does any Zope product that allows to perform forums?. 2. Is that product able to (or allowed to): - Create Forums groups, defined groups in which a moderator and users are present, who are constantly joining the forum through an application form? - Is it possible to automaticly create the access a forum after a user signing in the web site?. 3. I installed the LoginManager in the folder that contains all the Zope Website files. When I run the scripts ./start and I use the Zope Management Interface, the LoginManager shows Broken product advice and then the traceback informs there is a line 541 error from the "Application.py" file. Where does this problem belong to?. Can this version be incompatible with the Zope version that I own? Thanks for any help!! _________________________________________________________________ Charla con tus amigos en línea mediante MSN Messenger: http://messenger.yupimsn.com/

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Is this possible to daemonize a process launched from Zope ?
by Jerome Alet 28 May '03

28 May '03

Hi, I'd want to know : has someone ever tried to launch a process from Zope and daemonize it so that it runs by itself and doesn't hang one zope thread ? I'm thinking about the fork+exec with controlling terminal and process group detachment, available under *nix systems. Is such a thing possible ? Are there any drawbacks ? (beside not being portable to Win) I know I could try and see by myself, but if someone has already done it or says its impossible, then I'd better know now. Thanks in advance Jerome Alet

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XML-RPC and region-specific characters
by Ben Avery 28 May '03

28 May '03

I'm stuck on a problem with our production site (in the UK) We have a client application sending data to a Zope server by XML-RPC. Our users have been trying to send text descriptions including the British Pound symbol £. But this not being sent or received correctly. Has anyone found this problem with £, or any other region-specific characters. I have read that it's possible to use XML-RPC with unicode, but have been unable to find exactly how to do this with Zope. Can anyone offer any help?

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