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Re: [Zope] Some doubt about how to best assign user rights.
by Dieter Maurer 05 Mar '01

05 Mar '01

=?iso-8859-1?Q?Max_M=F8ller_Rasmussen?= writes: > My problem is that I want to give each student the right to edit the content > in their own folder. You already know about "local roles"? Look in the Zope book for more details. You may find something, too, in URL:http://www.dieter.handshake.de/pyprojects/zope/book/chap3.html Dieter

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Re: [Zope] Importing external document
by Dieter Maurer 05 Mar '01

05 Mar '01

ASHISHRANJAN_V writes: > Problem is when it fetches the html page , it also changes the relative > links in html page . In fact, Zope does not change it. Its the browser that resolves the relative URL relative to the base it knows. You can use "RESPONSE.setBase" to tell the browser the true base URL. More details URL:http://www.dieter.handshake.de/pyprojects/zope/book/chap3.html Dieter

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Re: [Zope] ZClass with property linking to another object
by Dieter Maurer 05 Mar '01

05 Mar '01

Ronald L. Chichester writes: > In other words, is there a way to establish a relationship between two > objects in the database so that a search for related objects in one > instance will bring up the other objects (be they the same class or > not)? Have a look at ZCatalog. Dieter

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Re: [Zope] RE: ZODBC problem (was: Preventing WebDAV locks)
by Dieter Maurer 05 Mar '01

05 Mar '01

Capesius, Alan writes: > ... > with further testing I > have determined that the Zope server itself is not locking up, but rather > requests to the database (MS SQL7 via ZODBCDA) seem to be queueing up. My memory tells me faintly that such an issue has already been discussed in the mailing lists (zope, zope-dev). When I remember right, ZODBCDA synchronizes all database requests --> searchable list archives... Dieter

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Apology! (was: [Zope] Problems with DTML-IN patch!!!)
by Dieter Maurer 05 Mar '01

05 Mar '01

John Morton writes: > On Fri, 2 Mar 2001 20:55:40 +0100 (CET) Dieter Maurer <dieter(a)handshake.de> > wrote: > > > Chris Withers writes: > > > John Morton wrote: > > > > > > > > It doesn't appear to be defined in DT_In.py in 2.2.5, but it is ment > ion in > > > > it's doc string, and is available in the dtml-in namespace. I never > got > > > > around to tracking down where it was added in. > > "DT_InSV.py" (for DTML In Sequence Variables) defines it, if > > it is defined (when I recently looked through the sources, it has > > not been). > > I can't find them in either DT_In.py or DT_InSV.py in 2.2.5, yet they do > actually work fine... You are right! "{next,previous}-sequence-start-number" and friends are still there. Nobody made the stupidity to remove them. Please (Brian) accept my apology for my quite rude accusation. I was just not smart enough to understand the ingenious code in "DT_In" and "DT_InSV". Let's review the situation: "DT_In" only defines "next-sequence-start-index". But what is pushed onto the DTML namespace is in fact a "DT_InSV.sequence_variables" object. Its "__getitem__" is used to look up sequence variables. The "__getitme__" code is quite sophisticated: If the key is not defined, it splits it at the last '-' into prefix and suffix (in our case, suffix is "number"). If the class "sequence_variables" has a method whose name is given by suffix (this is the case for "number" and many of its friends), then the corresponding "index" key is looked up and the method applied to it. This way, "next-sequence-start-number" and friends come into existence, without that one easily recognized how this happens. Sorry for the false accusations! Dieter

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Re: [Zope] Calling __call__ from an External Method
by Dieter Maurer 05 Mar '01

05 Mar '01

Sebastien Nameche writes: > ... > The problem is that I don't know how to render the DTML source of my > document into HTML before converting it into SYLK. I have tried to use > "__call__" method in various ways but couldn't find the correct > syntax/parameters/namespace to use. You may have a look at URL:http://www.dieter.handshake.de/pyprojects/zope/CatalogSupport.html It renders DTML to obtain and filter HTML for indexing purposes. You may also look at URL:http://www.dieter.handshake.de/pyprojects/zope/book/chap3.html It contains a description how DTML objects are rendered. Dieter

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Problems with acquisition in PythonScript objects
by Jérôme Loisel 05 Mar '01

05 Mar '01

Hi! I am having getting objects through acquisition in PythonScript objects. I do not know if I am doing it wrong or if this is a bug... I have object foo (an image) in my root folder. I have bar, a PythonScript which calls foo's absolute_url() method. bar works as expected when viewing it from the root folder, but never from subfolders. I get attribute errors: foo does not exist. I have tried the following ways of calling foo's absolute_url(): context['foo'].absolute_url() _['foo'].absolute_url() _.getitem('foo').absolute_url() Yes, I have bound _ to the namespace. In all cases, I get attribute errors saying that foo does not exist. It seems to me that acquisition from within PythonScripts is not working... Any thoughts? BTW, I have also tried the following, which obviously does not work: context.getitem('foo').absolute_url() Thanks in advance! Jérôme Loisel -- Jérôme Loisel Lévinux: GNU/Linux dans les communautés à Lévis

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commit_sub error in add_NetShowLogFile (a ZClass with baseclasses :CatalogAware and File)
by Farrell, Troy 05 Mar '01

05 Mar '01

I have a ZClass NetShowLogFile. It has baseclasses of CatalogAware and File. When I try to add a NetShowLogFile, my python script adds the file(between 200KB and 3MB), parses the file, executes many SQL methods(two per line in the file -- average 1000 lines), and context.REQUEST.RESPONSE.redirect()s to a different page. The problem is this: After it finishes parsing the file and inserting it's contents into the database, I get a Transaction error: Error Type: AttributeError Error Value: commit_sub  Any ideas? It looks similar to http://classic.zope.org:8080/Collector/1895/view and to http://classic.zope.org:8080/Collector/629/view It also looks like I may have to move my files to LocalFS objects and rebuild my ZClasses :( Thanks for the second time today, Troy

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Re: [Zope] Splitter woes
by Dieter Maurer 05 Mar '01

05 Mar '01

Oleg Broytmann writes: > So I tried to catalog a production > service. It worked, but didn't do searches with russian letters, where on > debugging host it searched russian texts well. > ... > Before installing VKSplitter on a production server (FreeBSD) I want to > ask A long time ago (at least 6 to 12 months), I helped someone with a similar problem. Apparently, the "locale" code under FreeBSD is not correct. You may search the (searchable) list archive for traces of our discussion. I can not remember the details. Dieter

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ANNOUCE Dtml-Contract
by ender 05 Mar '01

05 Mar '01

Introducing the dtml-contract tag, the swiss army knife of dtml, it documents, it validates, it does form processing, it redirects, it reduces the amount of dtml you need to write, and if you ask nicely it might even do your laundry. All of this and more for that amazing price of free. ats its heart this utilitarian tag is a form processor based on the ArsDigita Community System's ad_page_contract. take a simple dtml form processing method <dtml-comment> this method changes the myint property of this object </dtml-comment> <dtml-if "REQUEST.has_key('myint')"> <dtml-try> <dtml-call "REQUEST.set('myint', _.int(myint)"> <dtml-except> Please enter an integer value for myint </dtml-try> <dtml-else> Please enter an integer value for myint </dtml-if> <dtml-call "manage_changeProperties({'myint':myint})"> all of this for a simply trying to get a variable coerced and displaying a userful error message to the user, add in a few more variables and the amount of code just grows. sophisiticated zopitista's might say, well just use ZPublishers coercion functions, and write <input type="string" name="myint:int"> but there are a couple problems with this. 1. error messages are unhelpful, zpublisher will short circuit so you won't get information about errors with all variables 2. because this information is transmitted via the http request, its vulnerable to url surgery. 3. its hard to customize and add your own conversion utilities, error messages, or error pages. so how does dtml-contract save the day? dtml-contract in action <dtml-contract> this method changes the myint property of this object <dtml-params> myint:integer <dtml-exception> error_page </dtml-contract> with this we've setup a method which is documented, expects a variable myint in the request, will automatically try to convert it to an integer, and if doesn't exist will return an evaluation of error_page. we've already cut down on the lines of dtml-code, plus we won't get the insertion of extra blanks commonly associated with coding in dtml. now imagine extending our simple example to a real app with several form variables and the utility of dtml-contract becomes more apparent. i could wax poetic about the myriad features of dtml-contract, but the day is short and i must drive to the python conference so here's a quick laundry list. features - comes with 10 filters including -newobid -obid -range(type, min, max) -optional -trim -nohtml -email -date -float -naturalnum - comes with extensive in source documentation in javadoc style - comes with extensive readme docs - takes optional argument to remove all non-contracted variables from the request (request.form to be specific). - takes optional arguements to redirect instead of writing directly to the connection on errors - sets error information in the error_handlers namespace (as contract_errors) - has utility functions for registering user defined filters. act now and i'll even toss in some unittests. http://www.zope.org/Members/k_vertigo/ZopeProducts/PageContract cheers kapil thangavelu off to the python conference.

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