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links stopped working
by garry saddington 27 Sep '04

27 Sep '04

I have just noticed something peculiar with my Zope application. All relative links have stopped working properly and are now referring to the directory above, and therefore failing to find the correct page. eg. /folder1/folder2/folder3/dtmlmethod if i use the relative link "dtmlmethod" in folder3 i get the following error message: cannot find /folder1/folder2/dtmlmethod Has anyone seen this before? I can correct it by using absolute references but I have many such links and they should work as they have been doing. regards garry

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Flash intro
by John Poltorak 26 Sep '04

26 Sep '04

Do I need to do anything within Zope to enable a Flash intro to display? The intro does come up OK when I use the full URL eg http://mysite:8080/myflashsite but when redirected through Apache to http://myflashsite/ it will not load. The title of the page shows which indicates the page has been found but it stops without loading the flash page. Could this a problem in the Apache redirection? And before anyone suggests that I shouldn't use flash, it isn't my decision and I can't do anything about it. -- John

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came_from logic
by Gregory Gehrich 26 Sep '04

26 Sep '04

When accessing a page anonymously that requires a login, the user is presented with a login form, and when authenticated, the original page they requested. In my currrent environment, the orginal page is presented less the query string. This came_from logic was supposedly fixed to bring the query string forward after a the user authenticated in Plone 2.0.4 (see comment below). It did not appear to work. - Fixed came_from testing when there is a query string (logged_in.py). [geoffd] I updated the logged_in.py based on July 21 update from plonista. Still isn't working. Should this work for all templates automatically or is there coding that's needed in the called template when anonymous accesses it? Apologize if this only pertains to Plone. Gregory

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[ANN] Zope 2.7.3 beta 1 released
by Andreas Jung 26 Sep '04

26 Sep '04

Hi all, on behalf of Zope Corporation and the Zope community I am pleased to announce the release of Zope 2.7.3 beta 1 You can download it the sources from http://www.zope.org/Products/Zope/2.7.3b1/ Installers for Microsoft Windows will be available shortly! This release is a bugfix release and contains a fix for a memory leak in cAccessControl and some fixes in the Zope session machinery. For more information on what is new in this release, see the CHANGES.txt and HISTORY.txt files for the release: http://www.zope.org/Products/Zope/2.7.3b1/CHANGES.txt http://www.zope.org/Products/Zope/2.7.3b1/HISTORY.txt For more information on the available Zope releases, guidance for selecting the right distribution and installation instructions, please see: http://www.plope.com/Books/2_7Edition/InstallingZope.stx -- Andreas Jung (andreas at zopyx dot com)

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Hats off to dunny..
by Chris McDonough 26 Sep '04

26 Sep '04

Just wanted to send a short note to give public thanks to Michael Dunstan, who has been largely responsible for making Zope sessioning work reliably (at least so far ;-) in what will be Zope 2.7.3. There's just no way I would have had the ability to get them working nearly as well as they appear to be working without his help and guidance. - C

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Survey on Open Source
by Mike Chan 26 Sep '04

26 Sep '04

Dear all, I am conducting a survey on open source software. This is for my academic coursework and dissertation. It will be great to have your support and participation in this survey. This survey has two separate questionnaires, focusing on the following areas: 1) OSS development (Developers or those who contribute in coding or documentation), and 2) IT/IS costs (CIOs or IT Managers). You are free to go for the questionnaire that is appropriate for you. Below are the links: 1) Brief introduction page: http://web.singnet.com.sg/~mikecck/opensource/Introduction1.htm 2) Questionnaire 1(Open Source Development): http://web.singnet.com.sg/~mikecck/opensource/WebFormA1.htm 3) Questionnaire 2(Open Source and IT/IS Cost): http://web.singnet.com.sg/~mikecck/opensource/WebFormB1.htm Thank you for your time. Mike Chan Student Curtin University of Technology

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acquisition context within product method
by Richard Rosenberg 25 Sep '04

25 Sep '04

Hello All: Do any of you have an idea about how to solve the followong problem: I am working on creating a zope product that uses multiple DTML pages to gather information from the user before actually constructing the product class, sort of like a 'wizard' interface. I am pretty new to this, so please bear with me. The idea is that __init__.py exposes the appropriate DTML form for step 1 in the process, as well as the relevant module level function, e.g., def initialize(context): context.registerClass(module.class, permission="Add class_name", constructors=(module.Step1Form, module.Step1Func)) Step1Func would then return another DTML page/form called Step2Form Step2Form gets more info from the user and calls Step2Func Step2Func processes the returned info and in turn returns StepFinalForm StepFinalForm calls StepFinalFunc which actually instantiates the class and does self._setObject and all of that good stuff. Using this approach, I get through Step1Form and Step1Func OK, but when Step1Func attempts to return Step2Form, it appears to have no acquisition context and returns KeyErrors like: Error Type: KeyError Error Value: standard_html_header . . .or AttributeErrors like: Error Type: AttributeError Error Value: aq_parent For example: #This is a module to create an object in steps from OFS.SimpleItem import SimpleItem from Globals import DTMLFile Step1Form = DTMLFile("dtml/Step1Form", globals()) Step2Form = DTMLFile("dtml/Step2Form", globals()) StepFinalForm = DTMLFile("dtml/StepFinalForm", globals()) def Step1Func(self, REQUEST): """This is the doc string""" request = REQUEST . . .more code in here. . . return Step2Form(self, request) def Step2Func(self, REQUEST): """This is the doc string""" request = REQUEST . . .yet more code. . . return StepFinalForm(self, request) def StepFinalFunc(self, REQUEST): """This is the doc string""" request = REQUEST . . .and yet more code. . newClass=someClass(id, title, moreArgs) self._setObject(id, newClass) return self.manage_main(self, request) To make a long story even longer. . .is there a way to wrap a returned DTML document in an intact acquisition context? I've tried .__of__(self) tacked on to the return statement but it seems as if it is the 'self' object that lacks an acquisition context. I've also tried making the DTML an attribute of a class that inherits from SimpleItem, which gives the KeyError on standard_html_header (incidentally, none of the DTML includes references to standard_html_anything). If anyone knows of a product that uses a multi-step construction process prior to instantiation and ZODB storage I'd love to see how it works. Thanks for any thoughts. Richard

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Handling credit cards
by John Poltorak 25 Sep '04

25 Sep '04

If anyone has any sample code for handling credit card payments under Zope I'd be interested in having a look. -- John

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Re: [Zope] Intersection/Union of ZCatalog result sets
by Jonathan Hobbs 25 Sep '04

25 Sep '04

From: "+lupa+" <lupa(a)zurven.com> > Hello Jonathan, > I'm on the digest and not the regular zope list, so I'm sending you > this off list (feel free to post it if you find it useful). My CalendarX > product for Plone has some examples in it of making separate queries to the > catalog and combining them and unique-ing them. > > In short, you can add two catalog query results together with a + sign. Or > if you have one query (q1) and want to add another (q2) to it, you can use: > > q1 += q2 > > That's all it takes. > > If there is overlap between the result sets, you'll have duplicates, so you > should run them through a "unique" routine -- there was a good one in the > CMFCalendar.CalendarTool.py routines, which I extracted and put into a > Python script in CalendarX. > > Here's the code, in its entirety: > # Unique the results of a query (query) > results = [] > rids = [] > for item in query: > rid = item.getRID() > if not rid in rids: > results.append(item) > rids.append(rid) > > Finally, related to an intersection, is a little routine for subtracting > one query from another. In CalendarX, this is my queriesSubtract.py > routine for subtracting any events in q2 from those in q1 (so this is q1 > not in q2): > > #make a list of RIDs in q2, using a list comprehension: > q2rids = [item.getRID() for item in q2] > #make a new q1 that contains only items with RIDs NOT in q2rids > q1new = [item for item in q1 if not item.getRID() in q2rids] > return q1new > > Both these routines use the RID (record ID) of objects in the ZCatalog, > which is fairly key to this type of job. I think with these basic examples > you should be able to implement just about anything you need. But I also > agree with Andreas that Dieter's AdvancedQuery product is terrifically > useful for creating truly sensible queries on the ZCatalog. Thanks for the response! (all ideas, comments and suggestions greatfully received!) In my particular case I am trying to combine the result sets from two different search on two different zcatalogs (ie. not two different searches of the same zcatalog). In this case the RIDs do not match (each zcatalog maintains its own RIDs). I am doing this to try to squeeze out some performance improvements from a ZCTextIndex. We have a zcatalog with about 1 million documents that we are full-text indexing and it no longer fits into memory (therefore requiring many disk i/o's during retrieval which is seriously degrading performance). Our zcatalog currently has 5 indexes: 4 minor indexes and one major index (the main ZCTextIndex). I am attempting to split the zcatalog into two separate zcatalogs: one containing the 4 minor indexes and one containing the ZCTextIndex. The hope is that the zcatalog containing only the ZCTextIndex will be smaller and will again fit into memory. The only difficulty is in combining the results from searches of two separate zcatalogs in an efficient manner. My best guess at this point is that I will have to patch the 'search' routine in ZCTextIndex to stop it from 'Lazifying' the result sets, so that I can join/intersect the result sets based on OIDs (instead of RIDs - which should be doable as the result sets prior to 'lazifying' are xxBTrees and the BTrees product comes with methods for join/intersection). I can then 'Lazify' the final result set and return it. At least that's the theory! Thanks again for you reponse, Jonathan

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RE: [Zope] Zope Session Timeout
by Tiller, Michael (M.M.) 25 Sep '04

25 Sep '04

> From: zope-bounces(a)zope.org [mailto:zope-bounces@zope.org] On Behalf Of > Andreas Jung > Subject: Re: [Zope] Zope Session Timeout > > > > --On Freitag, 24. September 2004 10:28 Uhr -0400 Asad Habib > <ahabib(a)engin.umich.edu> wrote: > > > Hello. Thanks for your input. Isn't there a better way to achieve this? > Is > > there a pre-defined function I could use, perhaps? > > > > > You could look at the API yourself :-) In a sublime bit of irony, I actually went to look at the API reference and found the following commentary at the top of the page: Anonymous User - June 26, 2002 1:43 pm: The reference describes nearly nothing when you don't know the solution! Examples are absolutely necessary. Anonymous User - Nov. 12, 2003 10:52 am: Look at http://www.php.net : it's both a precise API reference for PHP developers, and a tutorial full of interesting samples. Apart from the Zope Book (which efficiently sums up the ZMI) I have rarely seen such a poor pedagogical and practical approach as among the zope documentation. Anonymous User - Dec. 24, 2003 1:55 am: So convoluted! So frustrating! It would be much more useful to have this information organized in a more hierarchical fashion, like Python's Global Module Index (c.f. http://www.python.org/doc/current/modindex.html) Anonymous User - Jan. 18, 2004 5:46 am: For the love of god, someone please listen to these suggestions. 1) Table of contents / index 2) General organization (php.net, http://www.python.org/doc/current/modindex.html) 3) Example code. One of greatest things that the PHP community has going for it is a clear, concise, organized reference, WITH EXAMPLES. Newbies get rolling instantly, and advanced users are able to skip to exactly what they're looking for. edcass - Jan. 18, 2004 7:24 pm: man, I stopped developing in Zope 2 years ago... I thought this would have been dealt with by now. Well, I suppose I'll finish this project off and then check back in in another 2 years. See you then... furiag - Mar. 1, 2004 5:12 am: This API reference is uncompleted. It doesn´t include commands like manage_clone or manage_delObjects. I guess there are a lot more. Of course, I'm sure these were all lazy people who just like to complain and couldn't be troubled to RTFM. I, as Andreas puts it, they don't have the "intelligence to perform such basic tasks as reading and doing investigations." > -aj -- Mike

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