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Re: [Zope] Editing downloaded + installed product?
by Thomas B. Passin 21 Oct '99

21 Oct '99

From: Stefan Hoffmeister <Stefan.Hoffmeister(a)Econos.de> >: On Thu, 21 Oct 1999 12:48:49 -0400, Michel Pelletier wrote: > >>> From: Stefan Hoffmeister [mailto:Stefan.Hoffmeister@Econos.de] > >>> (Re)starting ZServer takes about 18 seconds on my development >>> NT4 system >>> (192 MB, 540 Mhz overclocked Celeron). I somehow feel that >>> this is an a >>> tad bit inappropriate time lag. >> > >Let me add "for development purposes" to clarify. > >Look, I am used to blazingly fast compilers - Object Pascal (Borland >Delphi) and Borland C++Builder with well-done pre-compiled headers. > >19 seconds delay, combined with the "manual" action of shutting down the >server + starting it up again - I perceive that as an eternity. > >What do I do in these 19 seconds? > >>the ability to do >>a python reload could be elaborated and implimented, of course you have >>to source code so you can provide a patch. ;) > I'm having the same problem using Python code as an external method. The trouble is that when you change the code and rrun it, the Python interpreter has continued to run all the while (since it is running ZServer). It thinks that all your code has already been bound to the existing method and class names you defined the first time you ran the code, and it doesn't realize there have been changes. A Python reload() call, as mentioned above, can work if you have imported a module using "import spam". You could put an import spam/reload(spam) pair into the function call. But reload() doesn't work for all flavors of the import statement. In my case, some of my code can be changed on the fly, and for other parts I have to restart the server. Perhaps some Python expert can give us working examples (not guesses!) showing how to construct modules and import trees so they will always update without us having to restart the server. On the other hand, those reload() calls would take time to execute, so it should be possible to remove them for the production system easily and without ill effects. Thomas Passin

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Trapping Login's
by Dan Rusch 21 Oct '99

21 Oct '99

Hey all, Does anyone know of a way to "hook" into the login of zope powered site so that I can "log" who has logged in and when. Additionally, I want to set up a notification system for the beta phase of a project so that I get notified if a user logs in (I can handle the notification part via e-mail, just looking for a trigger method). The only thing I can think of is to have all users URL to the same place and login there. DR

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RE: [Zope] Editing downloaded + installed product?
by Michel Pelletier 21 Oct '99

21 Oct '99

> -----Original Message----- > From: Stefan Hoffmeister [mailto:Stefan.Hoffmeister@Econos.de] > Sent: Thursday, October 21, 1999 12:25 PM > To: zope(a)zope.org > Subject: Re: [Zope] Editing downloaded + installed product? > > (Re)starting ZServer takes about 18 seconds on my development > NT4 system > (192 MB, 540 Mhz overclocked Celeron). I somehow feel that > this is an a > tad bit inappropriate time lag. Why? Zope has the read in the entire object index, initialize itself, it's products, and it's external resource connections. This is alot of work. > Is Linux (or any other platform) any better in this respect? > Is there any > way to speed up this cycle? Once again, Why? > Assume, for instance, that I need to hot-fix some problem in > WhatEver_Python_Product - in contrast to "just" reloading the product > shutting down the whole server is a tad bit too much, don't you think? If you're 'hot-fixing' a production site enough times for this to matter, than you are putting much, much more at risk to your application than 18 seconds of non-response. As a seperate issue, the ability to do a python reload could be elaborated and implimented, of course you have to source code so you can provide a patch. ;) > >Python zproduct development should definitely be done > >on a non-production server for this reason. > > Is there any other way? :-) Any development of any form whatsoever on any platform in any language for any application should not be done on a production server unless you want to get burned. -Michel

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RE: [Zope] Bad use of XML Document??
by dale w lance 21 Oct '99

21 Oct '99

> At 05:34 PM 10/19/99 -0500, you wrote: > >I am trying to use XML Document to upload my stylesheets also. > >Is this a no-no? > > What do you mean exactly by this? I am trying to use XSL and XSLT (since IE5.0 understands these directly, as well as other tools). I am not using CSS. I try to upload the XSL (XML format) Document and get the error. > > If you are trying to use an XML Document to hold non-XML > content then this > is a bad idea :-) If on the other hand you are trying to > associate XML with > a CSS style sheet, then this is a fine idea, though your CSS Actually it is XSL style sheet. > since is not > XML thus should be stored in a DTML Document or a File. > > >Error Type: Bad Request > >Error Value: Invalid or duplicate property id > > > > This implies that there's an attribute in your XML which Zope > doesn't like... > > Hope this helps. > > -Amos Thanks Amos. I did manage to get a couple of other stylesheets loaded. It seems there is some bad attribute in the document (although I can't figure out how to find it) That will teach me for trying to copy straight MS code (an example I downloaded from MS) :-p Dale

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Bad use of XML Document??
by dale w lance 21 Oct '99

21 Oct '99

I am trying to use XML Document to upload my stylesheets also. Is this a no-no? Error Type: Bad Request Error Value: Invalid or duplicate property id Traceback (innermost last): File E:\TREB\lib\python\ZPublisher\Publish.py, line 214, in publish_module File E:\TREB\lib\python\ZPublisher\Publish.py, line 179, in publish File E:\TREB\lib\python\Zope\__init__.py, line 201, in zpublisher_exception_hook File E:\TREB\lib\python\ZPublisher\Publish.py, line 165, in publish File E:\TREB\lib\python\ZPublisher\mapply.py, line 160, in mapply (Object: add) File E:\TREB\lib\python\ZPublisher\Publish.py, line 102, in call_object (Object: add) File E:\WebSite\lib\python\Products\XMLDocument\XMLDocument.py, line 354, in add File E:\WebSite\lib\python\Products\XMLDocument\XMLDocument.py, line 239, in parse (Object: Manageable) File E:\WebSite\lib\python\Products\XMLDocument\Builder.py, line 149, in parse File E:\WebSite\lib\python\Products\XMLDocument\Builder.py, line 170, in start File E:\WebSite\lib\python\Products\XMLDocument\Node.py, line 690, in setAttribute (Object: Manageable) File E:\TREB\lib\python\OFS\PropertyManager.py, line 207, in _setProperty (Object: Manageable) Bad Request: (see above)

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Re: [Zope] Editing downloaded + installed product?
by Jeff Rush 21 Oct '99

21 Oct '99

On Thu, 21 Oct 1999 03:01:26 +0200, Stefan Hoffmeister wrote: >I have downloaded a nice-ish looking product, all complete with .dtml, >.py, .gif etc files. >c) I do not seem to be able to add some "plain", straight-forward Python > code to a ZClass that I have created from scratch; only adding an > External Method *on disk* can be added? Well, if the product includes .py files, either as external methods or Python (non-zclass) zproducts, you -will- have to edit them outside of Zope. There's just no other way. >d) I suspect that even if I modify all that on disk I will have to > restart ZServer each time? If you edit an externel method, you can just click on "Edit" in the particular external method object and Zope will reload the method for you. If you edit a Python zproduct, yes, you -will- have to restart the Zope server, again, and again and again. I've done it hundreds of times just today. Python zproduct development should definitely be done on a non-production server for this reason. -Jeff Rush

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How to access Zope via FTP?
by Norman Shelley (rrdn60) 21 Oct '99

21 Oct '99

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RESTORE/BACK ZOPE
by CURTIS David 21 Oct '99

21 Oct '99

Friends of Zope, What is the best way to backup and restore a Zope installation? I wish to move a demo zope installation PC to a production PC. I have tried the export/import function but it seem to only do subdirectories and it did not like the database connections. Thanks

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SQL Session v.0.1.1 released.
by Anthony Baxter 21 Oct '99

21 Oct '99

At http://www.zope.org/Members/anthony/software/SQLSession/, you'll find the first public release of my SQLSession Zope Product. This product provides server-side sessions, backed by a SQL database for storing all the data. Why would you use this? It's a way to replace passing all sorts of junk around inside hidden fields, or (ick) inside lots of different cookies. Note that this is not the earlier SQL Session product I've mentioned here in the past - after hacking around trying to do something that was far far too fiddly, I came up with a cleaner solution and just wrote a new one from scratch. aaaanyway, the usual caveats apply - this is the first public release, if it eats your data, sets your cat on fire, and borrows the car without asking, don't come crying to me. (but send patches). readme from the release follows. Have fun, let me know if this is useful to you, and suggestions/fixes/&c. Anthony ------- README for SQL Session, v 0.1.1 SQL Session This is a server-side session object that stores all state in an SQL database. Usage: create an SQL Session object (it will be called 'Session') in all documents that want to use Sessions, put, at the top <dtml-call Session> (I'd suggest putting it in your standard_html_header) This does a few things: It looks for a session cookie (by default called _ZSession, but that's something you can just set). If it finds one, it looks in the database to check that this is an ok cookie to use. If it doesn't find a cookie, or it finds that the Session is a dud, or if the request has the parameter '_force_new_session', it will create a new Session in the DB, then send back a cookie with that session in it. Next, it creates a SessionObj called 'SESSION', and puts it in the REQUEST object (so REQUEST['SESSION'] - just like REQUEST['RESPONSE']). This looks and acts like a dictionary, only it pulls its data out of the DB, and sets data in the DB. It supports the following: __getitem__, __setitem__, set, keys, values, items From here on inside the document, you can do things like <dtml-var "SESSION.set('someitem', 'somevalue')"> <dtml-var "SESSION['someitem']"> and it will just be squirrelled away in the DB. The Gory Details, #1: SQL schema: The default SQL schema is pretty dumb, but it should work on everything (I test on gadfly). create table sessions ( session varchar ) create unique index sessions_idx on sessions(session) create table session_data ( session varchar, name varchar, value varchar ) A smarter one (like the one I use :) would use a sequence or similar to create a session_id, and use that in a key in session_data. Anyway, you don't have to use this schema - go edit the sql methods in the session (pull up it's management interface). The Gory Details, #2: Storing objects: Right now the SessionObj stores base64 encoded pickles. It does no caching of results, and is, in fact, almost entirely stupid. It really should have some simple amounts of caching of lookups. (sessionObjs are created for each request, so they don't have to worry about getting out of sync with the db.) The nice thing about storing things this way is, of course, that you can stuff almost anything into it. The bad thing is, of course, that you can stuff almost anything into it. Make sure your definition of the session_data table makes the value column sufficiently large for your needs! To Do: * Housekeeping. Right now the SQL Session as is does no housekeeping of the DB itself. I would _suggest_ that this would be something that people would do on a case by case basis. What you could do is put an extra column in the session table, like 'expires' or some such, set to 'now' + 30 minutes, then have something go through and nuke the data. It's probably not something to put inside Zope - unless the Scheduler re-appears. * Cookie Expiry. Yeah, yeah, the cookie needs to expire. Next version. * More testing. It's been, ahem, lightly tested. It Works For Me. Your Mileage May Vary. * Fix Bugs, add features, all that stuff. Whatever. Anthony Baxter <anthony(a)interlink.com.au>, Fri Oct 22 01:22:44 EST 1999 ------- -- Anthony Baxter <anthony(a)interlink.com.au> It's never too late to have a happy childhood.

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Q: How to replace images through form + dtml
by Samu Mielonen 21 Oct '99

21 Oct '99

I've been trying to crack the following problem with no success: I'm inside a folder: 1999 10 10001 (unique article folderish object) parrot (image file inside folderish article) edit (dtml-form for editing article properties) postit (dtml-method for handling edit-form submissions) What I want to do is activate the edit method from within article folder to edit the article and it's included image in order to replace the image with another one. I can access edit method ok and all the article properties including the contained images are displayed in the edit form as I want. I can even click on the <image type=file name=image1> button to choose another file from my local hard disk to replace the image inside that article (in this case I want to replace "parrot" with "birdy"). I can successfully send this form with the included image to the postit method. Once inside the postit method, I have the following debugging code: <dtml-if "REQUEST.image1"> - Does the form include an included image? Inside the REQUEST.image1 loop - tell I'm inside the if-clause parrot=<dtml-var parrot> - show the contents of the parrot image image1=<dtml-var image1> - show the contents of the image1 property making the dtml-call to replace the image <dtml-call "parrot.manage_upload(REQUEST['image1'])"> After dtml-call parrot=<dtml-var parrot> - show the contents of the parrot image image1=<dtml-var image1> - show the contents of the image1 property </dtml-if> When I run it I get: Inside the REQUEST.image1 loop parrot=[picture of parrot here] image1=c:\file\path\from\disk\birdy.jpg making the dtml-call to replace the image parrot=[same picture of parrot, unchanged] image1=c:\file\path\from\disk\birdy.jpg My picture of parrot does not get replaced with the picture of image1 (i.e. birdy.jpg). What am I doing wrong? I get no error message from any of the methods (as far as I can tell). Best regards, Samu Mielonen PS I read the Content managers guide, the How-to examples, Quick reference and even the image.py code. I still cant understand this. -- "The world will not evolve past its current state of crisis by using the same thinking that created the situation." - Albert Einstein

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