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How to obtain the parent-object from an Zope-object
by Wim Bekker 17 May '03

17 May '03

How can I obtain the 'parent' object in Zope with python (script)? I have a subfolder that contains some python script that I want to run on some selected objects from the parent folder (of this subfolder). I can go a level down by using object from self.objectValues(). But how do I go one level up? I cannot find this kind of information anywhere. Wim

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JOB: Hostway Corporation Zope Engineer, Chicago
by Jason Abate 17 May '03

17 May '03

Hostway Corporation provides web hosting services with locations in the US, Europe, Asia and Australia. We are growing rapidly and have been profitable every year since our founding. Our strong emphasis on technology combined with our dedicated, energetic, and customer-focused team has made Hostway a premier Internet company. Hostway is looking for a Zope Engineer to join our Research and Development group at our Chicago offices. This position will be responsible for the design, implementation and deployment of Zope-based content management systems that drive our corporate website, intranet, and other Zope deployments, and will work closely with our Usability and User Interface group which develops the front-end user interface of these applications. Responsibilities include design and management of the website and underlying system architecture, client-side programming to add dynamic behavior to our site, server side programming and further Zope and CMF developments. This is a high-profile position, which requires an individual with excellent communication skills, the ability to work extended hours on occasion, to be on-call 24/7, and a self-motivated work ethic. Our Zope/CMF applications are mission-critical, and requirements change is directly proportionate to the rapid rate of growth of our company. Qualifications: * Experience in web application development working with server-side technologies such as ASP, JSP/Servlets, Cold Fusion, J2EE. * Solid client-side JavaScript, DHTML and CSS authoring skills and experience organizing and managing large scale websites. * Software development experience using Python, in particular with web-related technologies. * Extensive experience with Zope, including working knowledge of DTML/ZPT, ZMI, ZEO and CMF. * Working knowledge of SQL databases. * Experience administering Linux (or other Unix) and Apache in a production environment, in particular using virtual hosting, caching servers and load balancing. * Strong communication and organization skills. * BS or higher degree in computer science or related field. Please submit resumes and cover letters to careers(a)hostway.com.

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ZODB without undo functionality
by Ulla Theiss 16 May '03

16 May '03

Hello list, I use the ZODB seperately from Zope. The Undo-functionlity of the FileStorage makes a lot of sense for the usage by Data.fs. But it's just inconvenient for my application. I don't need the functionality, but because of the functionality more disk space is needed, I have to implement way to pack the database quite often an I suppose because of the big amount of data the application has performance losses. My question: Is there a way, to get the FileStorage to work without the undo functionality? I've tried other Storages (gdbmStorage and anydbmStorage) but could not get them to work. Could you recommend them or another Storage? Or should I stay by the FileStorage. Thanks in advance, Ulla.

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Re: incredible growing urls
by Bill Bell 16 May '03

16 May '03

Dieter Maurer <dieter(a)handshake.de> wrote, in part: > A trivial URL reference is one not containing a "/". They are harmless. > A relative URL reference containing a "/" is non-trivial unless > the path segment before each "/" is either "." or "..". > Non-trivial URL references can cause growing URLs. Do not use them. I'm a beginner. I have a very simple site in which the menu is generated with the following code: <dtml-with OSPN> <dtml-in "objectItems(['Folder'])" sort="id"> <dtml-if expr="id[0] in '0123456789'"> <a href="&dtml-id;"><dtml-var expr="id[2:].replace('_', ' ')"></a><br/> </dtml-if> </dtml-in> </dtml-with> Each time one clicks on a menu item the corresponding page is displayed. There appears to be no non-trivial URL reference. owever, the URL grows. Would you please point out my mistake. Thanks very much. Bill

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Zope performance
by Micheál Healy 16 May '03

16 May '03

Hi, Can anyone tell where is a good place to look for Zope performance figures? I'm looking for things like: Concurrent sessions on single machine, Concurrent sessions per machine in a ZEO cluster, Page refresh rates. Nothing too major, basically. Thanks, Micheál Micheál Healy Engitech Ltd. 01 6204 516

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manage_addPythonScript
by Charles Zealey 16 May '03

16 May '03

I'm haing some problems calling manage_addPythonScript. While the manual mentions it's existence I can find no examples of how to call it (a common complaint!). However, when I get something that runs I get Error Type: TypeError Error Value: 'in' or 'not in' needs sequence right argument (which I have only ever seen where python versions are wrong.....) Is this a permisssions problem, a bug, or simply user error? I'd appreciate your wisdom....... Charles My code: # Example code: from Products.PythonScripts.PythonScript import PythonScript # 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 def addPythonScript(obj,id): manage_addPythonScript(obj,id) try: j=context.objectIds('Script (Python)') k=j.index('getTableDetailsStatic') print 'Found',k print context.objectValues('Script (Python)')[k].absolute_url(relative=None) print context.absolute_url(relative=None) if context.objectValues('Script (Python)')[k].absolute_url(relative=None) == \ context.absolute_url(relative=None)+"/getTableDetailsStatic": print 'Defined' else: print 'Undefined' a=context.manage_addPythonScript('getTableDetailsStatic',REQUEST=None) except: print 'Not Found' addPythonScript(context,'getTableDetailsStatic') return printed System: Zope Version (Zope 2.5.1 (binary release, python 2.1, linux2-x86), python 2.1.3, linux2) Python Version 2.1.3 (#1, Apr 15 2002, 11:13:45) [GCC 2.7.2.3] System Platform linux2 SOFTWARE_HOME /home/usr/local/src/Zope/lib/python INSTANCE_HOME /home/usr/local/src/Zope CLIENT_HOME /home/usr/local/src/Zope/var Process Id 1998 (4101) Running For 43 days 12 hours 15 min 55 sec Traceback: <!-- Traceback (innermost last): File /home/usr/local/src/Zope/lib/python/ZPublisher/Publish.py, line 150, in publish_module File /home/usr/local/src/Zope/lib/python/ZPublisher/Publish.py, line 114, in publish File /home/usr/local/src/Zope/lib/python/Zope/__init__.py, line 159, in zpublisher_exception_hook (Object: Administration) File /home/usr/local/src/Zope/lib/python/ZPublisher/Publish.py, line 98, in publish File /home/usr/local/src/Zope/lib/python/ZPublisher/mapply.py, line 88, in mapply (Object: test) File /home/usr/local/src/Zope/lib/python/ZPublisher/Publish.py, line 39, in call_object (Object: test) File /home/usr/local/src/Zope/lib/python/Shared/DC/Scripts/Bindings.py, line 252, in __call__ (Object: test) File /home/usr/local/src/Zope/lib/python/Shared/DC/Scripts/Bindings.py, line 283, in _bindAndExec (Object: test) File /home/usr/local/src/Zope/lib/python/Products/PythonScripts/PythonScript.py, line 302, in _exec (Object: test) (Info: ({'script': <PythonScript instance at 8ff9208>, 'context': <Folder instance at 8f0af98>, 'container': <Folder instance at 8deab20>, 'traverse_subpath': []}, (), {}, None)) File Script (Python), line 2, in test File /home/usr/local/src/Zope/lib/python/AccessControl/ZopeGuards.py, line 144, in guarded_import File /home/usr/local/src/Zope/lib/python/AccessControl/SecurityManager.py, line 83, in validate File /home/usr/local/src/Zope/lib/python/AccessControl/ZopeSecurityPolicy.py, line 157, in validate TypeError: (see above) <!-- Traceback (innermost last): File /home/usr/local/src/Zope/lib/python/ZPublisher/Publish.py, line 150, in publish_module File /home/usr/local/src/Zope/lib/python/ZPublisher/Publish.py, line 114, in publish File /home/usr/local/src/Zope/lib/python/Zope/__init__.py, line 159, in zpublisher_exception_hook (Object: Administration) File /home/usr/local/src/Zope/lib/python/ZPublisher/Publish.py, line 98, in publish File /home/usr/local/src/Zope/lib/python/ZPublisher/mapply.py, line 88, in mapply (Object: test) File /home/usr/local/src/Zope/lib/python/ZPublisher/Publish.py, line 39, in call_object (Object: test) File /home/usr/local/src/Zope/lib/python/Shared/DC/Scripts/Bindings.py, line 252, in __call__ (Object: test) File /home/usr/local/src/Zope/lib/python/Shared/DC/Scripts/Bindings.py, line 283, in _bindAndExec (Object: test) File /home/usr/local/src/Zope/lib/python/Products/PythonScripts/PythonScript.py, line 302, in _exec (Object: test) (Info: ({'script': <PythonScript instance at 8ff9208>, 'context': <Folder instance at 8f0af98>, 'container': <Folder instance at 8deab20>, 'traverse_subpath': []}, (), {}, None)) File Script (Python), line 2, in test File /home/usr/local/src/Zope/lib/python/AccessControl/ZopeGuards.py, line 144, in guarded_import File /home/usr/local/src/Zope/lib/python/AccessControl/SecurityManager.py, line 83, in validate File /home/usr/local/src/Zope/lib/python/AccessControl/ZopeSecurityPolicy.py, line 157, in validate TypeError: (see above)

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which base class for "news"
by Andreas Pakulat 16 May '03

16 May '03

Hi, i need to have a ZClass for News-Entries, but I don't really know which Base Class to use. I need to save author, time of creation and the real news-text with it, so I first thought that I could put these into different properties and have no base class. Now this doesn't work, as I don't have properties with no base class, second thought was to use file, but then I'll get the content page when clicking on it in the ZMI? I know that I can redefine the edit View to my propertysheet/manage view, but I thought that there would be a more "straightforward" solution to this? I also thought about setting the data of a File-subclassed ZClass to the news-text, but this doesn't work, I get a Unauthorized Error when execution <newObject>.update_data within a Script(Python)?! Andreas -- You will pass away very quickly.

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RE: [Zope] recursive python script = Memory Leak?
by Passin, Tom 16 May '03

16 May '03

[ Andrew Altepeter] >Are there any tricks/quirks in recursive python scripts I should know > about? It appears that one section of this list isn't being > deleted, so > when the script is called again (i.e. starting the recursive algorithm > again), the list that is initially create is the list from > the previous > call. > Try adding a "depth" parameter to track the recursion level. For the first iteration, have the method print or otherwise log the list, so you can see what it starts out as. > I'll put the code here so hopefully someone can point out an (obvious) > bug :-) > > Oh, the list that I'm building is of the form: > [[object, [objects children]]] > And, it's necessary to have the second outer list. > > ... > #create a new child_q > new_queue = [[context, queue]] > > if (context.is_root != 1): > return context.aq_parent.getRootedMenuList(new_queue) > else: > return new_queue > It looks to me like everything should be released by the time the thing returns from recursion. I would be the most concerned about "queue" and "new_queue" because they seem to have the most potential for keeping references hanging around - who knows what references Zope may construct once the thing returns? So the one thing I would try first is this - > if (context.is_root != 1): > return context.aq_parent.getRootedMenuList(new_queue) new_queue = None #just in case ... > else: > return new_queue Where does "is_root" come from? BTW, you do not need the parens around the condition expressions in the if statements. Cheers, Tom P

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Stop external URL's loading within a browser window
by Michael Fox 16 May '03

16 May '03

Hi *, Seeing as the majority of people on this list are web developers, I thought this would be the place to ask my question. In hope that someone else has had the same issue and possibly has a solution. Within my Zope application, I load a small pop-up window in which I load a third party applet. My problem is when users click on an external link (say a URL contained in an email in Outlook etc.) it loads that site within the pop-up window containing my applet and clobbers all child applications loaded by that applet. Is there any way to stop this using JavaScript or some other mechanism? Thanks in advance, Michael Fox Web Analyst Programmer Century Software http://www.CenturySoftware.com.au Tel: +61-2-9460-1422 Fax: +61-2-9460-3098

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passing :records on in a hidden field
by Erik Myllymaki 16 May '03

16 May '03

I am collecting form data in a :records object: <form action="page2"> <input type=text name="stuff.name:records:string" value="" > <input type=text name="stuff.snumber:records:int" value="" > <input type="submit" value="Submit"> </form> On page2, I have another form that I am collecting data in, and would then like to pass both records objects on to page3, but a simple <input type="hidden" name=stuff value=<dtml-var stuff> > doesn't work (it passes a string that represents the records). Any ideas?

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