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Need help understanding the CMF portal_actions tool and interfaces thereto
by Phil Glaser 09 Aug '02

09 Aug '02

Hi, This is a CMF question that I've already posted on the CMF list, but did not get a response to. I'm hoping there might be someone on this list who can respond. I need to do some fairly extensive customization of CMF/Plone and am trying to understand what the portal_actions tool is and how it works. I've figured a few things out on my own -- if I add a portal action of the "portal_tabs" type, it shows up on the site navigation bar, and that the contentTabs menu in the "my stuff" area of Plone is built from portal actions. But much remains opaque to me. For example, the "local roles" action in the "my stuff" contentTabs menu is not listed in the portal_actions tool. "Action providers" make no sense to me. I've been all over the CMF and Plone sites and cannot find any documentation about it. (There are some juicy looking links on the CMF site, such as http://cmf.zope.org/design/system_architecture/view and http://cmf.zope.org/design/interfaces/tools/IF_portal_actions/view) but these links don't lead to real content.) Is there such a document? My other alternative is to study the Plone Page Templates and the portal_actions source code. If I must, I shall, but it would really help to have some narrative explanation. Thanks! Philip Glaser Principal and Software Architect Sustainable Software Solutions, LLC StillSmallVoice(a)DirectvInternet.com www.sustainsoft.com 973-951-9522 _______________________________________________ Zope-CMF maillist - Zope-CMF(a)zope.org http://lists.zope.org/mailman/listinfo/zope-cmf See http://collector.zope.org/CMF for bug reports and feature requests

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ZODB Conflicts
by Gilberto Pereira 09 Aug '02

09 Aug '02

Hi all... I have a "problem" that i would like to know more about... Sometimes, my Zope server window shows a message like: INFO(0) ZODB conflict error at object... (n conflicts since startup...) I'm guessing it happens when two users access the same published object at the same time... Zope treats this problem by (guessing again) serializing the requests, and all ends well... But i can't stop thinking i'm doing something wrong (or at least i'm forgetting to do something) Is this procedure normal??? Or is there a way of preventing this (besides turning the -D option when launching zope server) ? What i´m really asking is if there´s a product i should inherit when i build my own products in python, or take some other measures to prevent this behaviour. The products i´m talking about are mainly to fetch and treat data stored in an external database. I'm using Zope 2.5.1 (binary release, python 2.1, win32-x86), python 2.1.3, win32) If there´s someone out there who can give a help about this, i would appreciate. Cheers Gil

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Playing the Devil's Advocate: Why Zope?
by EvH 09 Aug '02

09 Aug '02

Hi, My dad is finally considering rewriting his business applications from VB to the web... and asked me to check out the different tools available. I know a bit about environments like Zope, OpenCMS, am currently checking out VB.Net or "simple" languages like PHP. Could anyone experienced with those tools tell me why I should go for ASP.Net, or even what is the point of prefering more complex environments like Zope over PHP? Any hint much appreciated EvH.

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Re: [Zope] Playing the Devil's Advocate: Why Zope?
by EvH 09 Aug '02

09 Aug '02

At 04:06 09/08/2002 -0600, kosh(a)aesaeion.com wrote: >On a simple approach MS's reputation in the security industry is right on >par with the seaworthiness of the titanic. Good quote :-) I agree. Besides, ASP.Net involves far too many depencies (IIS, SP, .Net framework, MDAC, IExploder if using proprietary browser features, etc.) >Have you seen a security framework for PHP? No idea. I don't know enough, hence my looking for infos. Besides the acquisition mechanism, is Zope's security features the only features that should make me choose it over PHP or other languages (Perl, etc.) ? I'm not being sarcastic BTW, but simply looking for significant features before making a decision :-) Thx again Ed.

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Images through XML-RPC
by Ed Colmar 09 Aug '02

09 Aug '02

Anyone know if it is possible to send images, or other file data through xml-rpc? I've been working a lot with the xml-rpc funtionality of zope and it's a lot of fun. I have some seperate python/Tkinter scripts that I'm playing with that all communicate using it. Can I wrap files somehow and work with them in ZODB using xml-rpc? For example, a client has an image on the local machine. Can I make a rpc call to a python method and save it in the zodb as a zope image? I would probably need PIL on both sides? Any thoughts on this? thx -ed- -- Green Graphics ::: Print and Web Design ::: 510.923.0000

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RE: [Zope] How to call functions in DTML?
by Josef Meile 09 Aug '02

09 Aug '02

>> To call python functions from within a document: >> <dtml-var expr="python_script(attr1, attr2, ...)"> Is 'expr=' necessary? I always use: <dtml-var "python_script(attr1, attr2, ...)"> and it works. Regards, Josef.

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More info for newbies on Zope's Z2.log file
by James Bragg 09 Aug '02

09 Aug '02

Hello everyone! I finally got Sawmill, a website stats package, (www.sawmill.net) up and running with Zope 2.5.1. FYI: The Z2.log file format is almost Identical to the Apache Combined log file format. There is a subtle difference in some of the separators at the end of the line where the client browser and OS information are located. Sawmill compensatea for this, and its a non issue. TIP: When you first setup sawmill, just set it up to import one log file. It will automatically detect the format. What was blowing my install out was that I had told Sawmill to suck in an entire directory of log files. By reading just the Z2.log file it was able to determine the format. After that, I went back and added the my log archive directory and it was able to bring all of the files in. Live and learn, I hope others find this helpful. -james James Bragg

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Zope Tutorial Tool?
by Patrick Price 09 Aug '02

09 Aug '02

Idea mode on: Is there any kind of Zope Tutorial Tool out there? Something for throwing together instructional pages like the Zope Tutorial? Something that could be used for ANY kind of tutorial, slide show, web-based learning, etc. At the very least a more comprehensive tutorial than focusing on Elvis sightings (which is a good tutorial, don't get me wrong) And before you tell me to write one myself, I have to learn Zope and Python first... By then I'll have some good ideas of what to put in a tutorial, but by that time I'll know Zope and everything that's now unclear will become clear, and I'll think "Why bother? That's *basic* stuff." Rant: While I'm on the subject of documentation, it would be nice if every doc standardized on having sections like: What do I do with this? Practical example for the uninitiated. Like, "if you don't understand authentication, look at *this* link." before you even try to use this product. In other words, not only show the *software* dependencies, but show the *knowledge* dependencies. Think how fewer emails you'd get from people like me asking silly questions. What does it look like? Screenshot? (Save me the bother of installing yet another calendar package, trying to figure out how to use it, then seeing that the output is *crap*, and uninstalling and having had to restart the server *twice*.) I *love* product pages that have screenshots or show an image of what the control will look like. and When you have a nice web page with cool widgets/whatnots, tell people how it was implemented in size-2 type or something. Are you afraid I'll steal your design? Hey, that's how I learn! The ZDP comes to mind. How do they do that? Is it mentioned on that page? Nope. No, "this wiki based on wackproductZ and CMF". I see so many nice web layouts and have *no* idea how they were done, what products were used, nada. It's a shame. People learn stuff then take it for granted. Ah, the curse of learning. Thanks for letting me spam. Filter on. -Patrick Price ============== If you're gonna tell me to "read the documentation" without telling me which part, then don't even bother replying to my desperate plea for a clue.. Help point me in the right direction, at least. Although I sometimes *do* need a good whack on the head. I'm reminding to the ancient wisdom of "use your resources, Luke". But my name isn't Luke, so then I forget.

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Xron Problem
by George Stroussopoulos 09 Aug '02

09 Aug '02

Hi. I have been using Xron 0.0.10 inside Zope 251. I have a problem in xrondtml method. It seems that when i schedule a xron event to run at a specific time, it runs but it fails to reschedule itself for the next run. It always fails to rescedule and disarms the xron (time goes to 1970 [datetime(0) not in eventtime + reschedule interval] [the method i call with xron runs correctly]. I use xron in several parts of my code. It works fine in a part of code [it manages correctly to reschedule itself] but when i am trying to trigger it manually i get the message to download it.In other part of code it works only manually an not in the background procedure. Below is a part of the code to help you: I use xron inside a class called AllChannelsFolder. In the init method i wrote: def __init__(self, id, title, description,proxy_server_url, theContainer): """ Acquire the parent properties """ self = self.__of__(theContainer) self.id = id self.title = title self.description = description self.proxy_server_url = proxy_server_url self.discoveryExecuteAt=DateTime()+1.0 # initial value is tomorrow self.discoveryPeriodDays=0.0 #Initialise the periodic discovery event newEventId=id+'_XronDTMLMethod' newEventTitle=title+' Discovery method (using Xron)' discoverFile='<dtml-call expr="this().findAllChannels(REQUEST)">' newEvent=XronDTMLMethod(newEventId, newEventTitle, discoverFile, self.discoveryExecuteAt, self.discoveryPeriodDays) self._setObject(newEventId, newEvent) self.discoverXronDTMLMethod=newEvent Inside the findAllChannels method that xron calls : ... in the end of code i have this: if REQUEST is not None: try: u=self.absolute_url() except: # Log the catched exception # logExc(__name__, TRACE, MSG_URL_COMPUTING_EXC) if rfind(REQUEST['URL']) == -1: # We are in the manage_trigger() or in the trigger() method of the Xron contained object # Redirect to portal URL, i.e. URL2 u=REQUEST['URL2'] else: # We were called from the Discover tab => use URL1 for redirection u=REQUEST['URL1'] u2=u+'/manage_workspace' REQUEST.RESPONSE.redirect(u2) return self.loadingError The above code works fine when i schedule it, but it does not work with the manually way[trigger]. In the following code i use xron in a class named PortalFolder: the init method is basiclly the same: def __init__(self, id, title, description,theContainer, proxy_server_url=''): """ Constructor """ self = self.__of__(theContainer) self.id = id self.title = title self.description = description self.discoveryExecuteAt=DateTime()+1.0 # initial value is tomorrow self.discoveryPeriodDays=0.0 # Initialise the periodic discovery event newEventId=id+'_XronDTMLMethod' newEventTitle=title+' Discovery method (using Xron)' discoverFile='<dtml-call expr="this().discover(REQUEST)">' newEvent=XronDTMLMethod(newEventId, newEventTitle, discoverFile, self.discoveryExecuteAt, self.discoveryPeriodDays) self._setObject(newEventId, newEvent) self.discoverXronDTMLMethod=newEvent self.proxy_server_url=proxy_server_url the discover method that xron calls has in the end i have: if REQUEST is not None: try: u=self.absolute_url() except: #u=REQUEST['URL1'] logExc(__name__, TRACE, MSG_URL_COMPUTING_EXC) if rfind(REQUEST['URL']) == -1: u=REQUEST['URL2'] else: u=REQUEST['URL1'] u2=u+'/manage_workspace' REQUEST.RESPONSE.redirect(u2) return theResult The method discover runs ok but xron now fails to reschedule itself. It throws this : 2002-08-06T07:20:42 PROBLEM(100) Products.Xron.Loggerr Trigger event: http://exterminator:8082/Tests/CPM_V2/Portals/Portals_XronDTMLMethod Trigger time: 2002/08/06 10:20:40 GMT+3 Failed to trigger event. Type=bci.ServerError Val=302 (File: Unknown Line: Unknown) 302 Moved Temporarily for http://exterminator:8082/Tests/CPM_V2/Portals/Portals_XronDTMLMethod/trigger ------ 2002-08-06T07:20:42 PROBLEM(100) Products.Xron.Loggerr Disarmed event [Note: I have setup permissions with proxy roles.] Can anyone help me? Am i missing something? Any help and suggestion could be usefull! I hope i made clear myself. Thanks in advance. Georgios Stroussopoulos Athens Greece Software Engineer. strusos(a)yahoo.com

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RE: [Zope] How to call functions in DTML?
by Chris Beaven 09 Aug '02

09 Aug '02

Using this documentation :) http://www.python.org/doc/current/lib/module-random.html Write a simple python script to pick the random number. Return it as a string. <dtml-var "_[your_python_script()]"> the key point is the use of _['an_object_id'] To call python functions from within a document: <dtml-var expr="python_script(attr1, attr2, ...)"> -----Original Message----- From: Patrick Price [mailto:jprice22@wvu.edu] Sent: Friday, 9 August 2002 4:27 p.m. To: zope(a)zope.org Subject: [Zope] How to call functions in DTML? Simple question from a stupid newbie. I'm used to writing inline code using PHP and I just want a random number to appear on a web page. Once I clear that hurdle, I want to use that number to reference different images (objects, right). Then I'll have a web page that displays random images from my image library. How do I call Python functions from within a web (aka DTML Document?) page in Zope? If you tell me to read the documentation I'll strangle you. :-) It's lacking. Thanks in advance, -Patrick Price _______________________________________________ Zope maillist - Zope(a)zope.org http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )

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