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Using Catalog in a stand-alone application
by Noam Raphael 18 Jun '05

18 Jun '05

Hello, I intend to write a free (GPL) application for browsing and searching a large collection of classic Hebrew texts, such as the bible. I want to write it in Python, which is a language that I like very much. It is supposed to be a stand-alone application, which could be distributed on a CD. Some semi-special things I want the search to be able to do: It should be possible to select which books to search. I might want to allow some specific variations on the typed words, which are common in Hebrew. Another thing that may be nice is to find multiple results within one document, since some texts are quite long. I've found that Zope's ZCatalog is based on Catalog, which is said to be possible to run without the full Zope. If you are familiar with ZCatalog, perhaps you can help me a bit, or point me to places where to find what I need. I ask, first, if it is reasonable to use Catalog for such a task. I also want to know which parts of Zope are relevant for what I need. A general overview about how it works would also be very nice. Thank you very much, Noam Raphael

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Zope 3.1.0 beta 1 released!
by Stephan Richter 18 Jun '05

18 Jun '05

Hello everyone, The Zope 3 development team is proud to announce Zope 3.1.0 beta 1. Zope 3 is the next major Zope release and has been written from scratch based on the latest software design patterns and the experiences of Zope 2. It is in our opinion that Zope 3.1 is more than ready for production use, which is why we decided to drop the 'X' for experimental from the name. We will also continue to work on making the transition between Zope 2 and Zope 3 as smooth as possible. As a first step, Zope 2.8 includes Zope 3 features in the form of Five. Please test this release carefully and send us any feedback! In particular, we have tried very hard to keep backward-compatibility with the previous X3 3.0 release, so please let us know if the new release breaks your code. Downloads http://zope.org/Products/Zope3/ Installation instructions for both Windows and Un*x/Linux are now available in the top level 'README.txt' file of the distribution. The binary installer is recommended for Windows. Zope 3.1 requires Python 2.3.5 or 2.4.1 to run. You must also have zlib installed on your system. Most Important Changes Since 3.0 - New Pluggable Authentication Utility (PAU), which is similar in philosophy to the Zope 2 PAS. The following features are available in the in the basic PAU facility: + Credentials Plugins: Basic HTTP Auth, Session + Authenticator Plugins: Principal Folder, Group Folder For a detailed description of the pluggable authentication utility, see 'zope/app/authentication/README.txt'. - Major simplifications to the component architecture: + Removal of the concept of a service. All outstanding services were converted to utilities: Error Reporting, FSSync, Authentication. + Site Managers are global and local now; adapters and utilties are directly registered with the site manager. Now global and local component registration and lookup behaves very similar. + Local registrations can now only have two states: active and inactive. This simplified the code so much, that 'zope.app.utility', 'zope.app.registration' and 'zope.app.site' were all merged into 'zope.app.component'. + Implemented menus as utilities. The API also supports sub-menus now. + Implemented views as adapters. Skins and layers are now simply interfaces that the request provides. - Added an integer-id facility for assigning integer identifiers to objects. - Added basic catalog and index frameworks. - Added "sources", which are like vocabularies except that they support very large collections of values that must be searched, rather than browsed. - Created a new granting UI that allows advanced searching of principal sources. - Implemented a generic user preferences systsem that was designed to be easily used in TALES expressions and via Python code. Preferences can be edited via 'http://localhost:8080/++preferences++/'. A demo of the preferences can be found at:: http://svn.zope.org/Zope3/trunk/src/zope/app/demo/skinpref/ - ZCML now supports conditional directives using the 'zcml:condition' attribute. The condition is of the form "verb argument". Two verbs, 'have feature' and 'installed module' are currently implemented. Features can be declared via the 'meta:provides' directive. - Improved API doctool: Code Browser now shows interfaces, text files and ZCML files; the new Book Module compiles all available doctext files into an organized book; the new Type Module lets you browser all interface types and discover interfaces that provide types; views are shown in the interface details screen; views and adapters are categorized into specific, extended and generic; user preferences allow you to customize certain views; 3rd party modules can now be added to the Code Browser. - Improved I18n-based number and datetime formatting by integrating 'pytz' for timezone support, implementing all missing format characters, and reinterpreting the ICU documentation to correctly parse patterns. - Added '++debug++' traversal adapter that allows you to turn on debugging flags in 'request.debug'. Currently the following flags are defined: source, tal, errors. - Improved logout support. - Added the HTTP request recorder, which lets you inspect raw HTTP requests and responses. It can be used to create functional doctests without requiring third-party tools such as TCPWatch. - Developed a generic 'browser:form' directive. It is pretty much the same as the 'browser:editform' directive, except that the data is not stored on some context or adapted context but sent as a dictionary to special method (by default). For a complete list of changes see the 'CHANGES.txt' file. Resources - "Zope 3 Development Web Site":http://dev.zope.org/Zope3 - "Zope 3 Dev Mailing List":http://mail.zope.org/mailman/listinfo/zope3-dev - "Zope 3 Users Mailing List":http://mail.zope.org/mailman/listinfo/zope3-users - IRC Channel: #zope3-dev at irc.freenode.net Acknowledgments Thanks goes to everyone that contributed. Jim Fulton, Fred Drake, Philipp von Weitershausen, Stephan Richter, Gustavo Niemeyer, Daniel Nouri, Volker Bachschneider, Roger Ineichen, Shane Hathaway, Bjorn Tillenius, Garrett Smith, Marius Gedminas, Stuart Bishop, Dominik Huber, Dmitry Vasiliev, Gary Poster, Julien Anguenot Regards, Stephan

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Blank page problem
by Mike 18 Jun '05

18 Jun '05

Hello All, I'm currently running an intranet site using Zope and Plone and our users have been experiencing a very large number of blank pages (view source shows the html, head, and body tag, but that's it) on our site. From what I can tell, nothing relevent is appearing in the logs and all my attempts to catch them or atleast acknowledge that they happened show nothing. The blank pages are also immediate and are not consistent whatsoever. I've tried googling the problem, and have found a few threads that appear to be the same issue, but they've either gone unanswered or didn't have a solid solution. The product that by far creates the most blank pages for us is a custom one that executes code on our main server, and on average takes on average about 1 second, but can take up to a minute (rare) for a response. We currently use SOAP for this, but had the same problem when we were using ssh and rsh. We have about 800 users that have access to the system, and maybe 20-100 people on at any given time. The server is a dual 1.3gig machine running Mandrake Linux version 2.4.25 with 512MB of ram. We're completely at a loss on what to try to alleviate this problem, and are greatful for any help or insight anyone has to give. Thanks, Mike Patterson

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Zope programms for databases
by Ralph 18 Jun '05

18 Jun '05

I'm new to Zope and made a small database application with zope (mostly DTML) to learn the idea behind Zope, but I'm not satisfied with the structure of my application. I have for each table a Form (DTML-method) with 3 buttons (new,update,delete). Each button triggers a DTML-script "actionTable" actionTable calls either a DTML-method to display a form (update, insert) or calling the zsql-method to delete a data record. The disadvantage with this structure is, that it is difficult to maintain programs like this. I wish to have optimistic locking but to send variables to the next DTML-method is a hell. Example: I you have a database table with the rows id,name and desc I have to send all record values through all methods after the user is triggering update to secure that there is no concurrent update. But with my design approach it's not possible. Is there someone who has a better design approach or an idea?

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Problem with namespace
by Ralph 18 Jun '05

18 Jun '05

I have these objects: A is calling B is calling (D and E) My directory layout is: /map/ /map/sql /map/util /map/report/report1 /map/report/report2 /map/report/report3 Method A in "report1" is rendering B in "util". B is rendering a ZSQL-object in "sql" and in the tag <dtml-in> is rendering C (python-method) in "util", to render a table cell, but this isn't working, because E is unknown and I don't know why. Example: DTML-Method A: <dtml-in "sql.list_mytable" prefix="pre"> <dtml-var "util.B(index=pre_index)"> </dtml-in> DTML-Method B <td> <dtml-var expr="C(index=index)"> </td> Here is Zope breaking because Zope can't find method C. Could someone help? Ralph

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Re: [Zope] Passing parameters using DTML
by J Cameron Cooper 17 Jun '05

17 Jun '05

> John Poltorak wrote: > >> On Fri, Jun 17, 2005 at 07:09:04PM +0200, Dieter Maurer wrote: >> >>> Tino Wildenhain wrote at 2005-6-17 10:57 +0200: >>> >>>> ... >>>> Not at all. You could either have tried >>>> it out ;) Or looked at the DTML documentation >>>> in the Zope book *wink* ;) >>>> >>>> <dtml-var expr="somemethod(parm1=value1,parm2=value2)"> >>> >>> >>> Be warned: this is likely to cause loss of the namespace. >>> Do not forget to pass the two positional arguments (usually >>> as "None, _"). They are essential. >>> >>> For more details, read "Calling DTML Objects" of >>> >>> <http://www.dieter.handshake.de/pyprojects/zope/book/chap3.html> >> >> >> That looks useful. >> >> Is there also something which explains how to call ZPTs from a DTML >> object? >> >> I'm unable to pick up a passed parameter. >> >> This is what I've conjured up:- >> >> python:here.lib.parse_file(file=context.options['parm'],sepr=',',clone=1)"> >> >> hoping that "options['parm']" would get resolved as "ABC" but it >> doesn't. >> >> Any ideas? > When you call a ZPT like:: context.somePT(dog="beagle") you can get to it in the template like:: options/dog or:: python:options.dog or:: python:getattr(options,'dog') or maybe even:: python:options['dog'] Note that in the last two, I didn't need to know the name of the parameter at coding time, but could find it at runtime. If I have:: tal:define="att string:dog" then I can do:: python:getattr(options,att) The 'options' name is not contained in context. It is it's own first-class namespace. If 'parse_file' above is a ZPT, you can ask for options/file, options/sepr, and options/clone. --jcc -- "Building Websites with Plone" http://plonebook.packtpub.com/ Enfold Systems, LLC http://www.enfoldsystems.com

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Re: [Zope] Picking up a parameter in a ZPT
by Peter Bengtsson 17 Jun '05

17 Jun '05

On 6/17/05, John Poltorak <jp(a)warpix.org> wrote: > On Fri, Jun 17, 2005 at 04:33:28PM +0100, Peter Bengtsson wrote: > > Try > > python:here.parse_file(file=options['parm'],sepr=',',clone=1)"> > > Thanks for the suggestion, but I need to get the 'context' keyword in > there. > No. "context" is different from "options". context is the Zope namespace and options is a namespace that holds which parameters the template was called with. > I tried this > > python:here.parse_file(file=context.options['parm'],sepr=',',clone=1)"> > > but ended up with > > Error Type: AttributeError > Error Value: options > > Don't seem to be able to get the right syntax... > > John > > > On 6/17/05, John Poltorak <jp(a)warpix.org> wrote: > > > > > > I'm trying to work out how to pass parameters between various modules > > > running under Zope and have got stuck. > > > > > > In the line below, I need to replace the word 'links' with a variable > > > passed by the calling program > > > > > > > > > python:here.parse_file(file=context.links,sepr=',',clone=1)"> > > > > > > I know I can pass the variable using:- > > > > > > > > > <dtml-var expr="test2(parm='links')"> > > > > > > > > > Just don't know how to reference it under ZPT. > > > > > > > > > > > > Help! > > > > > > > > > > > > -- > > > John > > > > -- > > Peter Bengtsson, > > work www.fry-it.com > > home www.peterbe.com > > hobby www.issuetrackerproduct.com > > > -- Peter Bengtsson, work www.fry-it.com home www.peterbe.com hobby www.issuetrackerproduct.com

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IE v. Firefox for viewing Zope sites
by John Poltorak 17 Jun '05

17 Jun '05

I've just put together a simple Zope website, but whilst it renders properly under Firefox, it looks dreadful using IE. Can anyone explain why? Could it be the CSS? -- John

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Getting information about current method
by Jan-Ole Esleben 17 Jun '05

17 Jun '05

Hi! I am new to this list and rather new to Zope, so maybe this is a stupid question; unfortunately I haven't been able to find an answer to it anywhere: is there a generic way to find out from Python code which method has been called (in other words: find out where the current method is located in the ZOPE hierarchy and what its name is)? If I call an External Method via a DTML method, of course the REQUEST object contains the path to the DTML method because the External Method hasn't been called via HTTP. I haven't been able to figure out any other way of getting this information. Thanks in advance, Ole

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Picking up a parameter in a ZPT
by John Poltorak 17 Jun '05

17 Jun '05

I'm trying to work out how to pass parameters between various modules running under Zope and have got stuck. In the line below, I need to replace the word 'links' with a variable passed by the calling program python:here.parse_file(file=context.links,sepr=',',clone=1)"> I know I can pass the variable using:- <dtml-var expr="test2(parm='links')"> Just don't know how to reference it under ZPT. Help! -- John

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