July 2003 - Zope - Zope lists

Port number other than 8080?
by David Passmore 18 Jul '03

18 Jul '03

Running Zope on Mac OS 10.2.6. I know Zope runs on port 8080, but I have something else ruinning there. How can I change the port # zope runs on? -- David Passmore dpassmore(a)fastmail.fm -- http://www.fastmail.fm - Email service worth paying for. Try it for free

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Threading in Zope
by Florian Reiser 18 Jul '03

18 Jul '03

Hi folks, When I start a thread in zope, which shall execute a zope object, then the user falls back to the 'Anonymous User'. How can I preserve the current user for the thread? I need the user, because the script assembles it's output according to the users rights. Regards Florian Reiser

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Epoz Editor
by Shaun Einolf 17 Jul '03

17 Jul '03

I am having a problem using the epoz editor for more than one field on a page. For example i have two areas on my page to be edited description and title. the code in my page template is as follows: <tr> <th>Description</th> <td tal:content="structure python: here.Epoz(name='description',data=varDict['description'],toolbox='/toolbox',lang='en',style='width: 620px; height: 250px; border-stlye: solid; border: 1px solid #000000;')"></td> </tr> <tr> <th>Title</th> <td tal:content="structure python: here.Epoz(name='title',data=varDict['title'],toolbox='/toolbox',lang='en',style='width: 620px; height: 250px; border-stlye: solid; border: 1px solid #000000;')"></td> </tr> What happens, is the editor decides to not allow editing of title and moves the title content to description box and it just seems i cant have epoz used more than once on a page to be edited. Any help would be appreciated Thanks Shaun Einolf

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New zope.org rollout and transition plan
by Brian Lloyd 17 Jul '03

17 Jul '03

Hi all - At long last, we are preparing to 'go live' with a new and improved zope.org. The new site will put an architecture in place that will make it easier to maintain and improve the site. We're planning to make the new site live as www.zope.org at the end of July. The current site will still be accessible as old.zope.org. We plan to keep the old site available for a reasonable amount of time to ensure that important content that may have been missed by the migration can be hand-moved, etc. We'll give plenty of notice before decommissioning the old instance. Q: What does this mean for zope.org members? Generally, all membership info and most content will be transitioned to the new site automatically. Due to the amount of content and the 'organic growth' of the current zope.org over time however, there may be some bits of content that are either missed or get broken in some subtle way during transition. If you maintain product releases, articles or other content on zope.org, it would be a good idea to check on it after the transition. If you find things missing, you should be able to find it on the old.zope.org site and add it manually to the new site. If you find something broken and you don't know why, let us know so we can fix it. Q: Will there be some kind of 'public beta' period? Not per se. Experience has shown that it is hard to drum up the critical mass of usage required to really uncover non-obvious issues using a separate 'beta' site. In addition, zope.org presents a challenge in that you really need a short and choreographed 'switchover' window due to the community- contribution nature of the site. Members generally don't want to contribute their content twice (once on a beta site and once on the 'real' site), and we also need to go live quickly after a final content migration to minimize the inconvenience for people who might contribute content in the window between final migration and the launch of the new site. Q: Will the transition be quick, painless and invisible? Ha ha - silly human. :) We know from experience during the last zope.org transition that there will a period of hand-fixing after the new site goes live. Leaving the old site accessible during the transition will help with any pain we experience. I'll send another note when we finalize the dates for the final content migration and go-live date. I want to keep the window between these down to a day if possible to minimize disruptions. Brian Lloyd brian(a)zope.com V.P. Engineering 540.361.1716 Zope Corporation http://www.zope.com

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asynchronous task
by Florian Reiser 17 Jul '03

17 Jul '03

Hi folks, I need to compute large pdf-files on the fly. Can somebody plz tell me how I can start the asynchronous computation of the pdf, display the user a waiting form and show him the results after the asynchronous computation has finished. Regards Florian Reiser

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Zope hangs with no visible reason
by Jakub Wisniowski 17 Jul '03

17 Jul '03

Hi Today was the second time when my Zope has hanged up. The same thing has happened 6 days ago. I've never got problems with stability since I have moved from Zope 2.6.1 back to 2.6.0. This was caused by experiencing a bug described in Collector (Issue 852). Here is some background: I run Zope 2.6.0 on Windows 2000 server. Products installed are: - CCSQLMethods - DCOracle2 (1.3 beta) - ZODBCADA - exUserFolder (0-10-10) My application works with Oracle 8i database and has about 150 users. There is no Apache in front of Zope yet. Why it hangs? I have checked event log and the last thing logged in before hang up was: - first hang up: 2003-07-11T17:44:22 INFO(0) ZODB conflict error at /cr/centralne/blokowanieDokumentow/blok/LFaktur (186 conflicts since startup at 2003-07-09T23:04:31) - and the second one: 2003-07-17T08:15:16 INFO(0) ZODB conflict error at /cr/centralne/rozliczeniaBezgotowkowe/dokumentDyspozycji/ przegladPozycji/wyborFaktur/listaFakturS/zapiszZmiany (663 conflicts since startup at 2003-07-14T08:19:55) ...iteration over the number of conflicts... 2003-07-17T08:25:17 INFO(0) ZODB conflict error at /cr/centralne/rozliczeniaBezgotowkowe/dokumentDyspozycji/ przegladPozycji/wyborFaktur/listaFakturS (669 conflicts since startup at 2003-07-14T08:19:55) The next logged thing in were standard messages of zope startup. Is it possible that conflict errors killed my zope? I think about patching my Zope installation with Dieter Maurer's ReadConflictError patch, but I'm neither sure this will help nor this will work with 2.6.0. Any ideas? Jakub

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[ANNOUNCE] VarImage 2.2 (beta) Available
by Terry Hancock 17 Jul '03

17 Jul '03

VarImage is a Zope Product which allows images to be processed according to the URL used to access them, following a simple "chainable operator" syntax. Available plugins provide for resizing, thumbnailing, cropping, geometric transformations, and color space effects. Example: <zope_site>/my_image_jpg/G.s_200_300.png will "apply a green filter, resize to 200x300 pixels, and convert to PNG format". The new version fixes a bug in changing Zope id of an existing instance and fixes a misspelling which unfortunately affects the API (easy to fix though -- see the CHANGES.txt file). Download package from: http://www.anansispaceworks.com/papers_html#VarImage-2.2b.tgz Cheers, Terry -- Terry Hancock ( hancock at anansispaceworks.com ) Anansi Spaceworks http://www.anansispaceworks.com

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Question regarding InvalidObjectReference and the storing of objects in the session
by Alec Munro 17 Jul '03

17 Jul '03

Hi list, I've had a system where I was storing object URLs in the session, and using restrictedTraverse to access the objects. I got it in my mind today that perhaps my knowledge of zope had expanded to the degree that I could figure out how to bypass this step and simply store the objects themselves in the session. So I've been working on that, and pretty quickly I start to get InvalidObjectReference errors (I'm pretty sure they were why I chose the more complicated method originally). So I did some searching and I think I have a better understanding now of why this occurs. The way it goes in my head is that an object in the ZODB (and possibly other sources) cannot be stored directly in the session. Unfortunately, this doesn't seem to completely describe the error, as I've found I am sometimes able to store objects from the ZODB in the session. For example, here are two lines of code, in the same file, sequentially, with the first one working, and the second one giving me the InvalidObjectReference. session['site']['current_category'] = container.site.about #references a folder session['center_panel'] = container.site.display_category #references a page template I'm 95% sure this is the area that generates the error, because I've commented out the areas where the objects are retrieved. Thanks for any ideas, Alec Munro EOA Scientific Systems Traceback follows ('ssh' is an internal thing)

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generalized viewer in zpt
by David Bear 17 Jul '03

17 Jul '03

I would like to create a generalized document/file viewer in zpt but I'm getting stuck in understanding some things. lets say I have a folder heirarchy like this: \ \myTemplates \publicDocument \publicDocument\stuff \publicDocument\stff2 where stuff[n] could be anything from a structure text doc, to dtml method, to a file, to .. any zope object. I would like to have some macro's in myTemplates that could automagically display whatever object it is. I'm thinking of something like ... <div metal:define-macro="stuffviewer"> <p metal:define-slot="main"> <tal:content="here/stuff"/> </p> </div> but my brain gets twisted. do I send 'stuff' to the zpt as a parameter, ie \publicDocument\myTemplate\macros\stuffviewer\stuff? the other side then is how can tal/metal 'know' that it should be doing something like <p tal:content="structure here/stuff"/> rather than <p tal:content="here/stuff"/> will I need to loop and test object type? -- David Bear phone: 480-965-8257 fax: 480-965-9189 College of Public Programs/ASU Wilson Hall 232 Tempe, AZ 85287-0803 "Beware the IP portfolio, everyone will be suspect of trespassing"

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DTML Loop Iteration
by hpinson＠indepthl.com 17 Jul '03

17 Jul '03

I have a dtml looping question, Does anyone know how to iterate a loop using a counter within the loop for doing other things: <dtml-in "_.range(0,9,1)"> <dtml-in expr="SQL_getSubject(subject_id=3,standard_no=counter)"> Display stuff from query... </dtml-in> </dtml-in> Where 'counter' is an iteration variable of the loop. It is the 'counter' variable I am having trouble with then syntax for. Thanks! Harlow Pinson Indepth Learning Email: hpinson(a)indepthl.com Web: http://www.indepthl.com Voice: 505-994-2135 FAX: 208-475-7678

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