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RE: [Zope-dev] ZCatalog searching for missing values
by Bjorn Stabell 08 Oct '01

08 Oct '01

Having an exists function would be great. I was trying to do the same using CatalogQuery, but I found no way to check for Missing.Value, which is the repr() of what's in the catalog's metadata field for objects that don't have that attribute/function. I also ran into problems doing more complex or'ing and and'ing, and I assume we'll have better luck with ZOQLMethod for that. I just tried out ZOQLMethod as well. Couldn't get it to work, but it looks like really solid craftsmanship. I like the user-friendly way of selecting base object and the complete syntax. :) Some questions: 1. I couldn't get any query to work. I keep getting exceptions.TypeError argument 2 to map() must be a sequence object Here's an example query that I've tried SELECT id WHERE title == '' RECURSIVE; 2. Is the ZCatalog searching implemented? How do I activate it? 3. Do you have any plans to implement JOIN? The exists function would be very cool. Keep up the great work. Hope this helps flush out some features :) Bye, -- Bjorn Stephan wrote: [...] > I actually need to look at Casey's code and see what I can reuse. The > efficiency of my version is not that great yet, but much more > flexible. So I want to take Casey's code and optimize mine a little. > > BTW, I just added a mailing list and a poll for ZOQL. Please go to > http://demo.iuveno-net.de/iuveno/Products/ZOQLMethod and vote > in the poll, so I can get an estimate of the general interest. > > >I have one question: is it possible using a normal catalog query or > >Kavio's catalog query to check if a value is not set? The > >representation returned is Missing.Value, but I seem to be unable to > >say, e.g, 'Description == Missing.Value' etc. How hard is it to add > >such functionality? > > You mean, whether the system checks, if a property exists at > all or is set to None? I think both would be no problem. > > 1. Property exists or not: > > I could support a function, like: exists(Property) > Example: > > SELECT * > FROM Test > WHERE exists(Property); > > 2. Property is set to None: > > Simply use equal: Property == None > Note: That might work already? I have to check... > Example: > > SELECT * > FROM Test > WHERE Property == None; > > Regards, > Stephan > > -- > Stephan Richter > CBU - Physics and Chemistry Student > Web2k - Web Design/Development & Technical Project Management > > > _______________________________________________ > Zope-Dev maillist - Zope-Dev(a)zope.org > http://lists.zope.org/mailman/listinfo/zope-dev > ** No cross posts or HTML encoding! ** > (Related lists - > http://lists.zope.org/mailman/listinfo/zope-announce > http://lists.zope.org/mailman/listinfo/zope ) >

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Re: [Zope-dev] compiling Zope 2.4.1 on Mac OS 10.1
by Itai Tavor 08 Oct '01

08 Oct '01

Has anyone managed to do this procedure with Python 2.0? The -flat_namespace flag does not help and I'm still getting twolevel_namespace errors. I'm running Zope 2.3.2 and I'd like to avoid the startup warnings, as well as any possible incompatibilities with Python 2.1/2.2. Itai Jens Vagelpohl wrote: >i think i found a working solution. since my knowledge of compilers and >linkers isn't the greatest i'll just explain what i did. > >trying to compile python2.1.1 on OS X 10.1 failed for me displaying the >very same error. searching through apple's discussion i found the >following link: > >http://fink.sourceforge.net/doc/porting/shared.php > >it explains that some linker/compiler default options have changed. in >order to get python compiled and running i edited the toplevel Makefile >after running ./configure and edited the lines starting with LDSHARED >and BLDSHARED, this is what they look like now in my setup: > >LDSHARED= $(CC) $(LDFLAGS) -bundle -flat_namespace -undefined >suppress >BLDSHARED= $(CC) $(LDFLAGS) -bundle -flat_namespace -undefined >suppress > >notice the "-flat_namespace" switch, this gets rid of the new default >"twolevel_namespace" that complains about "undefined warning". > >running "make" was now successful and i was able to compile and run Zope >2.4.1. you will probably have to recompile your python to set that >switch under 10.1. > >i only did some light testing, no guarantees and before using this in >production you might want to read up on those compiler/linker options... > >jens -- -- Itai Tavor -- "Je sautille, donc je suis." -- itai(a)optusnet.com.au -- - Kermit the Frog -- -- -- -- "If you haven't got your health, you haven't got anything" --

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RE: [Zope-dev] ZTables and/or Catalog plugable brains?
by Jay, Dylan 07 Oct '01

07 Oct '01

> -----Original Message----- > From: Casey Duncan [mailto:c.duncan@nlada.org] > Sent: Friday, 5 October 2001 10:55 PM > To: Jay, Dylan; 'zope-dev(a)zope.org' > Subject: Re: [Zope-dev] ZTables and/or Catalog plugable brains? > > > On Thursday 04 October 2001 07:34 pm, Jay, Dylan allegedly wrote: > > > > I tried using ZClasses but it seems to run slow and take up > space. Instead > > I'm using Catalog (without ZCatalog) to contain the data. > I'm presuming > > this will be quite efficient (comments welcome). > > Yup that should be pretty efficient. Plus you can index and > query the thing > fairly easily. > > > > Now to my question, How do Catalog plugable brains work? > I've looked but > > can't see what the brain class has to look like to work. My > first attempts > > don't seem to work. The classes are created but don't > contain the data. Is > > the record data passed into the constructor? > > I'm not an expert on brains per se, but my understanding is > that they allow > you to wrap functionality from a particular class around data > stored in a > table (such as a Catalog or an external database) without > making each record > an instance of the class. > > This is how, when the Catalog returns data, you get the > getURL and getObject > methods for each record (among others). TinyTable and Z SQL > Methods also > support this functionality, and it is exposed in the > management interface. > > This would allow you to store the actual data as regular > metadata elements in > the Catalog, and get objects out when you query it. It would > avoid storing > the data twice, once in the objects and again in the metadata > and all of the > disadvantages this causes in terms of storage and synchronization. But what is the API? I understand that for SQLMethods you just have a class that assumes the existance of attributes that have the same name as you result fields. I tried doing this with the Catalog code but it seem to doesn't work. Am I doing it right or the the Catalog brains work differently?

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RFC: Date property requiers valid date (no more)
by Johan Carlsson 07 Oct '01

07 Oct '01

Hi, We currently want to use date-properties in the regular property sheet. The current date-property doesn't accept an empty value. We want to be able to submit an empty string and set a NullDate value indicating. Also a NullDate value should return an empty string when the "manage_propertiesForm" is rendered, e.g. showing an empty field. We have currently chosen a empty string "", to represent the NullDate value. (We haven't found any NullDate representation in DateTime and have concluded that it doesn't exist?) Choosing None as the NullDate value would have been preferred but it generates issues with the rendering of "manage_propertiesForm". Question: Is there anything better then an empty string for the NullDate value? Best Regards, Johan Carlsson www.torped.se [Here's our hot-patch] from ZPublisher import Converters def fixedfield2date(v): print "Fixed field2date conversion", fixedfield2date, v from DateTime import DateTime if hasattr(v,'read'): v=v.read() else: v=str(v) if v=='': return v return DateTime(v) Converters.field2date = fixedfield2date Converters.type_converters['date'] = fixedfield2date print "ZPublisher.Converters.field2date patched."

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RE: [Zope-dev] Emailing html web pages: how can I render page as the anonymous user?
by Bjorn Stabell 07 Oct '01

07 Oct '01

My favorite way is to support this is to create skins. We have two skins: printable emailable that fixes the standard_html_* stuff, and can even be used to override the content rendering at a deeper level, if needed (overriding document_view etc). We can use the same way to support WAP, Avantgo etc also. A printable version of a page is simply done by doing http://myurl/contenturl?portal_skin=printable Pretty cool. IMO, this is a better use of skins than to use it for languages; languages are better managed by Localizer or ZBabel. Bye, -- Bjorn <bjorn(a)exoweb.net> > -----Original Message----- > From: Chris McDonough [mailto:chrism@digicool.com] > Posted At: Sunday, October 07, 2001 04:53 > Posted To: Zope Developer > Conversation: [Zope-dev] Emailing html web pages: how can I > render page > as the anonymous user? > Subject: Re: [Zope-dev] Emailing html web pages: how can I render page > as the anonymous user? > > > Hi Don, > > Instead of including the rendered standard_html_header and > standard_html_footer in the emailed page, why not have a > "emailed_html_header" and "emailed_html_footer", which are > prerendered > copies of a toolbar and other things as seen by the anonymous user? > > The setuid/setgid thing is tricky and since the outcomes will > be about > the same (always showing folks an anonymous-based toolbar), including > static content is easier. > > - C > > Don Hopkins wrote: > > I'm using the CMF, and I've implement an "email_this_page" > method, that > > prompts for an email address, then uses the sendmail tag to > email the html > > contents of a page, like yahoo and other sites commonly do. > > I want to include the standard_html_header and > standard_html_footer in the > > email message, so it's easy for the recipient to navigate > to the web site. > > But when I tested it out, I noticed I got all the > management buttons like > > "Reject" and "Reconfigure portal" in the email message! > > Of course they required authentication, but it'd rather > render the page as > > it would be seen by the anonymous user. > > > > What I need is something like the effect of a > setuid/seteuid system calls, > > that temporarily downgrades the Zope user to anonymous, > while it renders the > > html headers and footers. > > As a stab in the dark, I tried changing the proxy role of > the dtml script > > that uses the sendmail tag and renders the html, but I still got the > > management buttons. > > Is it as simple as temporarily changing some properties of > the request? Or > > is there an extension or product that can do that? > > Thanks! > > > > http://www.WorldTradeCenterDisaster.com:8080/Memorial > > > > -Don > > > > > > > > > > _______________________________________________ > > Zope-Dev maillist - Zope-Dev(a)zope.org > > http://lists.zope.org/mailman/listinfo/zope-dev > > ** No cross posts or HTML encoding! ** > > (Related lists - > > http://lists.zope.org/mailman/listinfo/zope-announce > > http://lists.zope.org/mailman/listinfo/zope ) > > > > > -- > Chris McDonough Zope Corporation > http://www.zope.org http://www.zope.com > "Killing hundreds of birds with thousands of stones" > > > _______________________________________________ > Zope-Dev maillist - Zope-Dev(a)zope.org > http://lists.zope.org/mailman/listinfo/zope-dev > ** No cross posts or HTML encoding! ** > (Related lists - > http://lists.zope.org/mailman/listinfo/zope-announce > http://lists.zope.org/mailman/listinfo/zope ) >

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RE: [Zope-dev] Product Icon
by Adrian Hungate 06 Oct '01

06 Oct '01

If I understand what you are trying to do correctly, then all you need is to have your product's icon property be a method that returns the path to the correct icon (Like you would normally have the icon property set to). I use this for a couple of products too. Something like: class MyClass(.... normal stuff ...): """ """ def icon(self): """ """ if self._i_am_broken_: return "misc_/MyProduct/MyClassBrokenIcon" else: return "misc_/MyProduct/MyClassNotBrokenIcon" You've got to love python :) Adrian... -- Adrian Hungate Try Zope - http://www.zope.org - You might like it. If you do, try my Zope products - http://www.zope.org/Members/haqa - You might like them too! -----Original Message----- From: brian.r.brinegar.1 [mailto:brinegar@purdue.edu] Sent: 05 October 2001 22:05 To: zope-dev(a)zope.org Subject: [Zope-dev] Product Icon I am currently working on a product which has the sole purpose of referencing other objects. One of the properties is the path to another Zope object. Then methods are defined like getObject(), getPath(). We use it as a way to manage news and events that show on several sites that opperate on our Zope server. It allows one group to add a news document in their folder and if another group would like that news item to show on their site they can create a reference to it. Anyway, what happens from time to time is an object is referencing another object when it gets deleted/renamed/moved and that breaks the reference. The product handles this gracefully, however I would like to have the icon change from our standard icon to a broken icon. Any hints? --Brian Brinegar ECN Web Technician MSEE 104 A 494-3106 http://www.geeksoft.net/ _______________________________________________ Zope-Dev maillist - Zope-Dev(a)zope.org http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )

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Product Icon
by brian.r.brinegar.1 05 Oct '01

05 Oct '01

I am currently working on a product which has the sole purpose of referencing other objects. One of the properties is the path to another Zope object. Then methods are defined like getObject(), getPath(). We use it as a way to manage news and events that show on several sites that opperate on our Zope server. It allows one group to add a news document in their folder and if another group would like that news item to show on their site they can create a reference to it. Anyway, what happens from time to time is an object is referencing another object when it gets deleted/renamed/moved and that breaks the reference. The product handles this gracefully, however I would like to have the icon change from our standard icon to a broken icon. Any hints? --Brian Brinegar ECN Web Technician MSEE 104 A 494-3106 http://www.geeksoft.net/

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ZCatalog API
by E. Seifert 05 Oct '01

05 Oct '01

Hi list, as I'm not very familiar with the internals of ZCatalog I have a question to all you API experts: Why does ZCatalog.py (under Zope 2.4.1) specify a 'addIndex' permission for a method called 'manage_delIndexes' although there is no such method? The only method I could find to delete Indexes is 'manage_deleteIndex'. Can anyone comment on this? TIA Erich

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Curious problem with comprehensions and PythonScripts
by Steve Alexander 05 Oct '01

05 Oct '01

Here's the situation: I have a dtml document with a list of questions under various headings, formatted like this: HEADING 1 question1 question2 question3 HEADING 2 question 4 question 5 I have a PythonScript that gives a list of only the questions to a Page Template: PythonScript called get_questions: data=container.data_document(None, None) # ignore blank lines # lines with no leading space are headings # lines with leading space are questions return [l for l in comps.splitlines() if l if l[0] is ' '] I'm rendering this using a page template: <td tal:repeat="question container/get_questions"> The problem is, I'm often (always?) getting no questions rendered. However, if I change the python script to this, it works every time. PythonScript called get_questions: data=container.data_document(None, None) # ignore blank lines # lines with no leading space are headings # lines with leading space are questions questions = [l for l in comps.splitlines() if l if l[0] is ' '] return questions Any ideas what might be happening? I think the compiled code of the python script might be incorrect when directly returning the results a comprehension. -- Steve Alexander Software Engineer Cat-Box limited

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Random.shuffle
by Steve Alexander 05 Oct '01

05 Oct '01

Any particular reason why you can't use Random.shuffle from a PythonScript? Or any other methods of a Random object. I'd like to propose that restricted python be allowed access to methods of random.Random. I know that I can write a product to add a security declaration to random.Random, but I'd like this to be enabled by default in Zope. -- Steve Alexander Software Engineer Cat-Box limited

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