August 1999 - Zope - Zope lists

<code> tag?
by Mike Winter 24 May '00

24 May '00

Hi, just a quick question: how do you get Zope to display DTML without evaluating it? -- Mike Winter | mfw127(a)mail.usask.ca U. of S: 966-4759 TR Labs: 668-9323

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passing REQUEST.form to frames
by Hannu Krosing 09 Dec '99

09 Dec '99

What is the correct syntax for passing form data to child frames of a frameset ? I would like to pass form fields that is submitted to frameset to child frames. Is there any alternative built-in syntax to using an ugly construct like this : =& ------------------ Hannu

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2b6/zserver/redhat linux - python process seems to be growing ?
by Dr. Ross Lazarus 25 Sep '99

25 Sep '99

I have a ZODB about 5.4 mb and what appears to be a normal healthy zope 2b6 except that whenever I check, the size of the python processes (as revealed by top) seems to be expanding steadily. It starts out around 7.54mB and is currently 34.5mB or so... Anyone else noticed this or is it just me ? Flushing the cache seems to make no difference. At what point should I start wondering about memory leaks ?

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RE: [Zope] ZopeTime
by Brian Lloyd 15 Sep '99

15 Sep '99

> Anyone have any ideas on how i can create a variable using the > REQUEST.set object and insert the ZopeTime into it formatted with just > the time? and not the date and GMT on the end?? > > Probably an impossible suggestion but, hey.... Nothing's impossible :^) try:  Brian Lloyd brian(a)digicool.com Software Engineer 540.371.6909 Digital Creations http://www.digicool.com

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RE: [Zope] Client Detection in Zope
by Martin N. Hudson 06 Sep '99

06 Sep '99

:> I am currently trying to figure out how I can use the powerful DTML :> 'macro'ing capability to build pages dependent on the browser and its :> services (plug-ins, Java, JavaScript). Is there a way to do this from :> the server side that would give me this information or am I :> relegated to :> the client side detection? Thanks in advance for your assistance. :> Please reply directly to me as the digest isn't always immediate. :> Thanks, :> : :Try: : : : :this in conjuction with the #if tag, gives you browser conditional HTML: : : : <h1><blink>Isn't Netscape GREAT!!!</blink></h1> : : :-Michel Well, I thought of that, but it doesn't get me the services offered. I was hoping for a method that could give be booleans for something like:  <h1><blink>Aren't You Glad Netscape's Rhino is Enabled!!!</blink></h1>  Martin Hudson Development InfoStructure 1101 N. Highland St., Ste. 200 Arlington, VA 22201 Phone: (703) 525-6485 Fax: (703) 525-6029 http://www.DevIS.com

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RE: [Zope] Validate fields?
by ScherBi＠BAM.com 06 Sep '99

06 Sep '99

This may be heresy to some folk, but you're probably better off doing this client side, if you are able. The Javascript in Version 4.x and above Netscape (and IE too, I think) has a regular expression engine built in. An re to match all possible valid email addrs could be quite large however: http://enterprise.ic.gc.ca/~jfriedl/regex/email-opt.txt Good luck, Bill -----Original Message----- From: Juergen Specht [mailto:specht@speed-link.de] Sent: Thursday, August 26, 1999 9:35 AM To: Andreas Kostyrka Cc: Zope List Subject: Re: [Zope] Validate fields? Andreas Kostyrka wrote: > > how can i validate input fields in Zope? > > If somebody fills something in a input field and i expect > > an email-adress, how can i check the right syntax? > Well, try this: > <dtml-if "'@' in field"> > GOOD Email address? > </dtml-if> Mhm, but this is only a basic check that there is an @ in it. Everybody can use the following strings: @@ bla@bla @bla@ @ not so good... > > I know how to do it in perl with regular expressions but in > Well, somebody posted a patch or so to add the regular expression module > functionality to the DTML namespace ;) Good idea, volunteers anywhere? :) Juergen _______________________________________________ Zope maillist - Zope(a)zope.org http://www.zope.org/mailman/listinfo/zope (To receive general Zope announcements, see: http://www.zope.org/mailman/listinfo/zope-announce For developer-specific issues, zope-dev(a)zope.org - http://www.zope.org/mailman/listinfo/zope-dev )

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Automatic paragraph numbering and outline styles
by Timothy Grant 03 Sep '99

03 Sep '99

Hi, We are going to be publishing some complicated documents that will be modified fairly frequently. I would love to be able to do automatic paragraph numbering. Has anyone got a tool to do this? -- Stand Fast, tjg. Red Hat Certified Engineer tjg(a)avalongroup.net Chief Technology Officer www.avalongroup.net Avalon Technology Group, Inc. (503) 246-3630 >>>>>>>>>>>>Exceptional Minds, Innovative Products<<<<<<<<<<<<

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ZODB transaction ?!
by Matei Conovici 02 Sep '99

02 Sep '99

Hi! I'm trying to create a folder and put some images in it. My DTML looks somewhat like this:     My problem is that, sometimes the above works but mostly it doesn't :-), and I get something like this: -- Error Type: AttributeError Error Value: commit_sub [...] Traceback (innermost last): File /root/Zope-2.0.0b5-linux2-x86/lib/python/ZPublisher/Publish.py, line 209, in publish_module File /root/Zope-2.0.0b5-linux2-x86/lib/python/ZPublisher/Publish.py, line 179, in publish File /root/Zope-2.0.0b5-linux2-x86/lib/python/Zope/__init__.py, line 199, in zpublisher_exception_hook (Object: ElementWithAttributes) File /root/Zope-2.0.0b5-linux2-x86/lib/python/ZPublisher/Publish.py, line 169, in publish File /root/Zope-2.0.0b5-linux2-x86/lib/python/ZODB/Transaction.py, line 247, in commit AttributeError: (see above) -- I assume I'm getting this because the transaction with the ZODB for _addFolder does not get (correctly) commit()-ed and the folder object is not yet there when I try to add the immages. This happens with current b5 version and b1 as well... I would _really_ appreciate some hints here :-) Thanks, -- Matei CONOVICI, cmatei(a)roedu.net PS: As a general zope question, is it possible to explicitly ask for commit() in a SQL method ?

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zope hangs after "a while"
by Elliot Lee 01 Sep '99

01 Sep '99

http://news.gnome.org/gnome-news/ - the GNOME News site is up and running, thanks to help from list members. The only remaining obstacle between the site and a good slashdotting is the fact that after a period of operation, the server hangs (the same symptoms as when I overloaded 2.0.0b4 with requests). This period can be as short as 20-30 minutes, and I think averages around an hour. The site has received 20k page hits over the past 23.5 hours (I've got a script that restarts it every hour). I know this is very vague - if I can provide any specifics, please say so. -- Elliot The time for action is past! Now is the time for senseless bickering!

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XML-RPC, self and security
by Eric Kidd 01 Sep '99

01 Sep '99

I discovered a potential problem with ZPublisher, External Methods and Zope XML-RPC. Let's say you write an external method in Python, and you want to call it via XML-RPC. To make life more interesting, pretend you need access to 'self'. If you call an external method from ZPublisher (instead of calling it from DTML), you can't specify 'self' as your first parameter. Instead, you must specify it as your last parameter. Unfortunately, the user can pass a bogus 'self' parameter to your Python method, and possibly subvert any security checks you've provided (many such checks rely on 'self' in some fashion). Short Term Workaround --------------------- Access an attribute on self. Since no XML-RPC data types seem to support attributes, this should provide a small measure of security. def deliverNews(foo, self): # CAREFUL - Zope is sloppy about passing 'self' to external methods. # ZPublisher will only pass you a self argument if you leave an extra # parameter at the end of your parameter list and call it 'self'. # Unfortunately, a sneaky user could pass one extra parameter when # calling this function and give us a bogus value of self. To prevent # problems, we must double-check that self isn't some sort of XML-RPC # object. We can do that by accessing an attribute. REQUEST = self.REQUEST return foo Possible Fix? ------------- ZPublisher should probably work more like DTML rendering. In particular, it should check for a first parameter named 'self' and pass an appropriate object. Would this break something else in a complicated fashion? Cheers, Eric

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