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product beginer question : how to code add_xx_form and manage_add_xx such that xx finds instance of another product yy
by santiago 21 Jul '05

21 Jul '05

Hi sorry for the logn subjet :) I'm using Zope 2.7.5-final, python 2.3.5, linux2, and I'm just strating to code my first products. Here's my problem: I want to make a product that watchs instances from other products. for instance, let's say I have a product yy, with its add_yy_Form, manage_add_yy and class yy definitions, such that instances of yy just display memorised a string. now I want to build product xx such that when I create an instance of xx, I can tell it, throug the form provided by add_xx_form, which instance of yy I want it to watch at. (let's say for instance I want instance form yy to display the reverse of the chosen instance from xx) so I need add_yy_form to provide the end user with some kind of select from instances at hand (in current page, or in current page plus subpages would be nicer) and then I need the manage_add_yy to process that and be able to find the reference of the selected zope object. I thought of one solution : to provide a select with the url of the objects. So here come the questions : - is that ok, or is there a better way ? - is 'absolute_url()' the simplest way to find the urls for add_yy_form - if I manage to find a reference back from the url in manage_add_yy, what will happend if someone moves the object around, using copy/cut/paste for instance ? will what I think of as a reference still be pointing to the correct item ? (Note that my solution must not be specific to instances of xx : yy shall be able to watch instances from any kind of product) (sorry for such a simple question with such a long introduction... ) thanks!

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css in filesystem based product
by Nicholas Wieland 21 Jul '05

21 Jul '05

Hi *, I'm having issues developing a filesystem based product. The product loads correctly and I see my zpt, but I'm not able to apply a stylesheet. The product directory is under Zope-Instance/Products, I've created some directories where I put styles and templates - but changing this structure is no problem at all. I don't have the slightest idea on how I can hook the .css to the .zpt, probably the css must be "published" inside zope in some ways, but I don't know how. I'm using plain Zope, no Plone and no CMF. I've also tried to look how Plone does this but without any success (it's just too big ...). TIA, ngw --------------------------------- Yahoo! Mail: gratis 1GB per i messaggi, antispam, antivirus, POP3

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question on python script, dtml method and options
by Erik Myllymaki 20 Jul '05

20 Jul '05

I use the following template often. When using a page template for my MAIN page, I access the error and message vars with: <p tal:content="options/error">Error message</p> <p tal:content="options/message">Reg. Message</p> How would I access them when I use a dtml-method for my MAIN page? <dtml-var error> and <dtml-var message> don't seem to work. Python Script - index_html: # Import a standard function, and get the HTML request and response objects. from Products.PythonScripts.standard import html_quote request = container.REQUEST RESPONSE = request.RESPONSE error='' message='' if not request.has_key('next_state'): return container['MAIN'](context, request, error=error, message=message) elif request.get('next_state') == 'Do Something': try: doSomething() message = message + 'We did something' except: error = error + 'Error in doSomething()' elif request.get('next_state') == 'Do Something Else': try: doSomethingElse() message = message + 'We did something else' except: error = error + 'Error in doSomethingElse()' return container['MAIN'](context, request, error=error, message=message)

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Re: Connect to ms sql server from zope 2.8 on windows s erver
by Josef Meile 20 Jul '05

20 Jul '05

Hi, > AJ> Look at mxODBC or the latest version of ZODBCDA from zope.org. > > I'm free download egenix-mx-base-2.0.6.win32-py2.3.exe. > I have install zope 2.8 for windows. > I could not install egenix-mx-base-2.0.6.win32-py2.3.exe. Becouse it > could not find python in registry. > > How to install egenix-mx-base-2.0.6.win32-py2.3.exe without python in registry. > > Please help me. You have three alternatives (perhaps four if you consider linux): First alternative: 1.1 Install the python 2.3.4 binaries (the python that comes with zope, isn't logged on the registry, so, you can't use it) 1.2 Install the the egenix binaries 1.3 Copy the egenix installed files to: C:\YourZopeFolder\lib\python If I'm not wrong, the binaries are installed on : C:\python2.3\lib\python2.1 -> Make sure that you don't overwrite something in the zope's python. You can download the source code of egenix to have an idea of the files it installs 1.4 Uninstall python if you want Second alternative: 2.1 Create a folder called Python in C:\ 2.2 Create manualy this registry key: [HKEY_LOCAL_MACHINE\SOFTWARE\Python\PythonCore\2.3\InstallPath] 2.3 Set its value to C:\Python 2.4 Install the egenix binaries (they will be installed somewhere on C:\Python). 2.5 Copy the egenix installed files to: C:\YourZopeFolder\lib\python 2.6 Delete the registry key Alternatively to step 2.2, you can get this registry file: http://www.zope.org/Members/SmileyChris/HowTo.2005-02-06.0339/pil_for_windo… Before double clicking on it, change the 2.1 by 2.3 in your preffered text editor. Then you can double click on it and it will automatically install the key. Be aware that the key will remain on the registry till you manually delete it. Third alternative: Install python from source and then egenix. Here you need a C compiler. Finally copy the egenix files to C:\YourZopeFolder\lib\python I hope this was usefull. I did alternative 2 once and it worked. I haven't tested it recently, so, I can't guarantee it. Regards, Josef

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Re: performance of textindexng2 vs. zctextindex
by Francis Kelly 20 Jul '05

20 Jul '05

Thanks for your response, Andreas, and thanks for writing TXNG in the first place. I really appreciate the contribution. >>> I recently installed TextIndexNG2 2.1.1 >> >> > >which is *pretty old*. Take a look at the v 2.2.0 which has been optimized >over the time in different ways. Consider using StupidStorage as documented >in the release notes. > > > Question re v 2.2.0: on this page http://www.zope.org/Members/ajung/TextIndexNG there are three possibilities 2.2.0, 2.2.0b1, 2.2.0b2. The last modified column indicates that 2.2.0 has been modified most recently, but I'm assuming that the b1 & b2 versions are in fact more recent. Is that true? Also, 2.2.0b1 is around 2MB, whereas the other two are 600K and I noticed after downloading 2.2.0 that stemming support seems absent. So, from all this I'm assuming that if I want stemming support I should grab the 2MB 2.2.0b1. Is that right? I'll look into StupidStorage. >>> >>> I've been struck that if the number of search hits is high, TextIndexNG2 >>> is much slower than ZCTextIndex. For example, if I do a search on >>> 'podcast' (our site deals w/ podcasting) I get about 14,000 hits. >>> ZCTextIndex returns the results in about 0.1 seconds; TextIndexNG2 takes >>> 31 seconds or 300 times longer. In general, the more hits there are, the >>> bigger the difference between the two search indexes. >> >> > >Query speed depends on different things: the query, the implementation, the >operations needed to be performed during the query. Because of some >functionality TXNG needs to store much more information than ZCTextIndex. >It did this as said above sometimes in a not so efficient way (see above). >You might also look at TextIndexNG V3. > > > > V3 is appealing but we're running 2.7.6 and I'm not sure that I want the hassle of installing Five at this point. When we go to 2.8, which we'll probably due in a couple of months, V3 will be an option. Thanks for your help, Francis

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More TM ideas
by Rob Page 20 Jul '05

20 Jul '05

Following up to my note from yesterday. ZEA *is* the official registrant (but not legitimate owner) of the Cirlce-Z-Zope (CZZ) mark in many countries in the Madrid Protocol. You can search the WIPO database for "Zope" and find it. Zope Corporation is the official registrant of the word Zope in many countries in the Madrid Protocol and our registration predates the ZEAs. Since the ZEA registration is based on the word Zope we believe that an official trademark opposition will be successful. We are also only willing to pay the fees that Zope Corporation would otherwise have had to pay to register the marks itself. This offer was made in writing last Friday. The subtle but important point is that ZEA seems to be willing to transfer the marks to the Zope Foundation not Zope Corporation. This seems to be the essence of the difference in our position. If this is inaccurate -- i.e., ZEA is willing to transfer the marks to ZC with no strings attached then we can chalk this up to some incredible communication issue and can certainly move forward! It seems that the prospect of Zope Corporation's unfair (and unprecedented) management of the marks is the real issue. So that our position and policy are clear: *** We will not use (nor allow our successors or assigns) to use the Zope trademarks in non-competitive ways. *** The challenge is to figure out how to get this in place. One idea might be to make the BoD of the Zope Foundation the arbiter of any revocation action ZC might take. This would be a contractual relationship between ZC (and its successors and assigns) and the ZF. If ZC felt that a given ZC-licensed use of the marks had become inappropriate we would move to revoke the trademark license. If the license holder was unsatisfied with the revocation they would appeal to the Zope Foundation which, on vote of a supermajority of the BoD could overrule ZC's revocation action. It is our heartfelt sense that Zope Corporation is more likely to defend (within guidelines and process) the marks than a volunteer-led Foundation. We have heard comments that suggest that the Foundation should not be in the business of enforcement. Enforcement is an active responsibility. Perhaps once (and while) ZF has full-time staff to pursue Foundation business (including TM matters) the Foundation would be the first stop for tm issues. It has been reported that ZEA's original registration of the marks was defensive and done in an effort to preclude registrations from being made by unfriendly parties. We find it simply surprising that the first mention of their registrations to us was 18 months (!) after the fact. ZEA does not represent the entire Zope community in Europe (nor do they claim to) and certainly don't represent the global Zope community. In fact, we should all recognize that the ZEA competes with non-ZEA companies on proposals. That's fine, expected and natural. However, any action on ZEA's part that was made on "behalf of the community" is inappropriate. ZC does not claim to represent the whole Zope Community either. We are asserting our ownership (and, we think) aggressive desire to manage the marks and brand in a vendor-neutral way. With respect to ZEA's ownership of the Plone trademark - I am told by two people that ZEA helped register the Plone mark as a service to the Plone Foundation and that it has been or is in the process of being transferred. Presuming this is true I stand corrected. Even this morning the WIPO database advertises ZEA as the registrant of record for the mark. Regards, Rob -- Rob Page V: 540 361 1710 Zope Corporation F: 703 995 0412

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should stream iterator be used for ZODB-generated string file?
by Petri Savolainen 20 Jul '05

20 Jul '05

We have an application whereby multimegabyte strings, each generated from the contents of several thousands of small objects in ZODB, are downloaded from zope as a CSV files. A particular CSV file is typically downloaded once or twice a day at a maximum. The major issue is that it takes a long time for the download to start. Would it be possible to use a stream iterator (introduced in zope 2.7.1) or should we simply do chunks of REQUEST.write() ? What are the requirements for using chunked REQUEST.write - do some specific HTTP headers need to be set or does zope take care of it all? Any advice or specific pointers would be appreciated. I've googled all I could find about the stream iterators, serving blobs etc. but all the info seems to be focused on serving large filesystem-based data. I am not sure what parts of that info applies to an use case that involves reading data from ZODB, or if stream iterators make sense for the use case at all. I guess we could generate a temporary file and then serve that using a stream iterator. I understand some parts of the zope machinery could perhaps be released faster that way, but I wonder if the benefits are worth the extra step. Thanks! Petri

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How to get the download window option for file widget field?
by praveen kumar nagle 20 Jul '05

20 Jul '05

Dear All, I have created one ARCHETYPE having few fields for FileWidget, to upload the file. Problem::In the base view page i want to get the download window option(same like when u try to download a file) while clicking on link to download those file contents *****Code which I have given in archetype for FILE****** FileField('reserveform', searchable=1, required=0, schemata='DetailedInfo3', widget=FileWidget(label='Reservation Form')) FileField('enquiry', searchable=1, required=0, schemata='DetailedInfo5', widget=FileWidget(label='Enquiry Form')) ************************ ____________________________________________________ Start your day with Yahoo! - make it your home page http://www.yahoo.com/r/hs

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Zope 3 Developer's Handbook
by Stephan Richter 20 Jul '05

20 Jul '05

Hello everyone, I just wanted to let you all know that the first book covering Zope 3 hit the shelves yesterday. It is called the "Zope 3 Developer's Handbook" and was published by Sams' Developer's Library. Link to Sams Web-Site: http://www.samspublishing.com/title/0672326175 Link to amazon.com: http://www.amazon.com/gp/product/product-description/0672326175 There is also an online version at: http://dev.zope.org/Zope3/Zope3Book However, I did not yet have the time to transfer the editions made by Sams back to the online version. This will happen in the next months though. Regards, Stephan -- Stephan Richter CBU Physics & Chemistry (B.S.) / Tufts Physics (Ph.D. student) Web2k - Web Software Design, Development and Training

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performance of textindexng2 vs. zctextindex
by Francis Kelly 20 Jul '05

20 Jul '05

I recently installed TextIndexNG2 2.1.1 on a system running Zope 2.7.6 on Fedora Core 3. I've been running some comparison tests with ZCTextIndex, which is what our site currently uses. We're indexing around 50,000 objects at the moment. For TextIndexNG2, this is the configuration: Indexed attributes keywordSearchSource Default encoding utf-8 Storage StandardStorage Stemmer english Splitter: casefolding enabled Splitter: index single characters disabled Splitter: max. length of splitted words 64 Splitter: separator characters .+-_@ Default query parser PyQueryParser Autoexpansion disabled Stopwords english Normalizer European Use converters disabled Near distance Left truncation disabled I've been struck that if the number of search hits is high, TextIndexNG2 is much slower than ZCTextIndex. For example, if I do a search on 'podcast' (our site deals w/ podcasting) I get about 14,000 hits. ZCTextIndex returns the results in about 0.1 seconds; TextIndexNG2 takes 31 seconds or 300 times longer. In general, the more hits there are, the bigger the difference between the two search indexes. TextIndexNG2 is great: it has many features that we really want and perhaps the cost of those features is performance vis-a-vis ZCTextIndex. But I'm hoping that maybe I've overlooked an obvious or not-so-obvious configuration issue that will enable me to speed up TextIndexNG2. Thanks for any advice. Francis Kelly www.loomia.com

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