- Zope - Zope lists

this(), parent(), etc.
by Kent Polk 08 Feb '99

08 Feb '99

Ok. I've gotten myself pretty confused now. Given a dtml method in a folder containing : , which correctly identifies the parent folder, yet if I call this() indirectly, from another dtml method, I get a KeyError: this So then I call the second dtml method using (parent=this,... which contains: , which provides the correct object instance. However, when I try to <!--#var "_.getattr(parent ... I get a failed authorization even though I am using the Manager role... Why does an indirectly referenced dtml : 1) not know who it's parent object (folder) is through this()? 2) fail an authentication when accessing the parent object when passed as a parameter when it has permission. Note this problem only exists when the send dtml method is indirectly referenced. If it is called directly, this(), etc work fine. So what's the problem with indirection? Or how can I obtain a usable parent object from within an indirecatly referenced dtml method for use with getattr()? Thanks Kent

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fcgi, exceptions, random stuff
by Quinn Dunkan 08 Feb '99

08 Feb '99

Oops, I typed repl without thinking and accidentally mailed this to Amos (sorry!) > At 12:58 AM 2/1/99 -0800, Quinn Dunkan wrote: > >I posted this a while ago, but recieved no response, so I assume it either > >didn't make it, or everyone hates me. > > I hope you don't seriously think this. As you are no doubt aware, this list > gets a lot of traffic. If you are looking to get your questions answered > quickly I would suggest trying to ask them as clearly and precisely as > possible. Of course, feel free to ignore this advice ;-) I was just being silly :) Your advice is good, and I always try to make my mails/postings clear, precise, and short. "short" is not my strong point though... > So I think that material is available, but I guess we need to do a better > job organizing, labeling, and explaining it. Definitely the material is available, but if I were trying to learn ZPublisher without previous knowledge I might not immedietely look in "Developer Reference" -> "Technical Introduction to Object Publishing ..." Perhaps Trinket and Intruduction could be cross referenced in HOWTOs? And I think it might be good have a "How can I use Zope" section, because some people's immediate reaction might be: "looks cool, but I've already got a huge site, I just want to clean up the cgi mess, I don't have a 'web application platform' just a plain old site." The "How can I use Zope" section would say "use ZP/ZT to clean up your cgi mess!" > One more general purpose way of handling shutting down is to include a > published method which shuts down python, for example: > > def shutdown(): > "should require authorization to call this" > raise SystemExit Yeah, but fcgi runs a seperate python for each cgi, so I'd need to somehow communicate with that python. My ideal solution would be to have publish_module() reload its module every time (which is no time loss if the module hasn't changed). How can I tell publish_module() to do this? Ick, this doesn't deal with submodules properly, what I want is to have publish_module() re-import everything every time. Maybe if I take them out of sys.modules... I'm also having trouble with ZP exceptions, threads, sockets, and a few other things. Phillip was mentioning his fcgi efforts, so perhaps I needn't worry. My current approach is to use the fcgiapp module and an fcgi-module-publisher that's similar to cgi-module-publisher with fcgi.Accept() and fcgi.Finish() around it. Phillip, as soon you've gotten your fcgi working I'd love to see what you come up with. > >I guess it's all pickled in the var directory and in various > >dtml / python source lying around, but I'm much more comfortable editing > >python and dtml with vim than filling out web forms / downloading stuff > >developed off-line. I guess ZServer's ftp server ought to make this a bit > >nicer, but I thought a nifty solution would be to write zope as a filesystem > >server > > Well, writing the Zope FTP server is kind of like doing this, but only in a > cross platform way ;-) Yeah, sorta. But you have a rather restricted set of commands available. Maybe I could scratch together a python shell you can use to easily traverse the Zope hierarchy, run arbitrary shell commands on its objects and fake up browser-like ways to call them. In hand with the python / Zope debugger, this could be pretty useful. I gather medusa provides a ability to connect to a running server and feed python strings to it, perhaps they could be hooked together? That way you could admin your site by either going to /manage and entering your password, or, when you need something more powerful and low-level , telnetting into a special port talking to Zope in python. Or maybe you're just not on a machine that has a fancy graphical browser with frames, javascript and diddly-doo, and a fast net connection (as I frequently am), or maybe you don't want to have to fire up huge X and huger browser just to make a quick change (as I frequently do). Feasible? Reasonable? I've been looking through Response.py in an attempt to figure out how to insert my own exception handlers in. I want to be able to say raise mail_forms.UserError, "You need to fill out the 'name' field." and have that spit out an appropriately admonitory dtml. Or say: raise UserdbError, "Ack! Assertion diddly-doo wound up with doodly-dee!" and have that spit out a "I'm so sorry, but I screwed up, an error report has been mailed and I'm on it." message, meanwhile fishing the python state out of the traceback object and sending everything relevant to me. I'd also like to replace the default exception handling routine so I can have something a little more appropriate than "Sorry, an error occurred." (these are apparently hardcoded in Response.py?) and also be able to customize the traceback output without hand-hacking Response.py, since I don't care if people see my source code. Or for that matter, I could not show them anything and have the stack trace mailed to me, as I mentioned earlier. Of course, hopefully all of this can be done per-module, like __bobo_hide_tracebacks__ or whatever it's called, although maybe a little nicer than setting magic variables. Hmmm, would it be exceptionally weird (BOO HISS) to have the handler inside the traceback itself? Then each exception could be handled differently: raise UserdbError("Unexpected death scream!", mail_me=1) raise UserdbError("Expected death scream.", mail_me=0, error_doc=error_docs.temporary_failure) And of course, whoever catches them chooses whether to run their handler or just inspect their data and do something else. You get the idea. I can just wrap my published objects in a try except but that gets tedious after a while. Zope also still uses string exceptions. Unless there is significant need for python 1.4 compatibility, it shouldn't be too hard to come up with some sort of simple hierarchy, is that in the works? I understand "Bobo" is being phased out in favor of "Zope." I mourn. Zope is a cool word and all, but Bobo is, well, Bobo. Zopers will have to do some thinking to come up with a database name that flows as mellifluously off the tongue as "Bobobase". Well, maybe "flows mellifluously" isn't the right term... tumbles off the lips? But anyway, it sounds very sturdy. I picture this large chimpanzee hoarding all these little gizmos, which he will let you borrow if you ask him. In fact, Zopers miss the ability, when asked "how do you run your site?", to answer "I run it on Bobo", and having the other person momentarily get the image of the same big chimp squatting in your server room and manhandling html out the http port. Then "I run Bobo on Linux" and we see this short fat little penguin ordering this talented chimp around your server room. Grazing on the cables in the corner is a small herd of huge smelly Gnus who occaisionally do some of the heavy work. I don't mourn the loss of "Principia" quite so much. It's very dignified and all... I see this big "Principia Internetica" tome, dispensing its erudite trove of information to the elite (those who paid for it). And then there's the unfelicitous image of something that tries to be the Monolithic Ultimate Solution, only to be undermined by pesky Austrians. But "Bobo"... the passing of a gem...

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Re: [Zope] Zope in Virtual Host on ISP
by Chris Larson 08 Feb '99

08 Feb '99

Let me try asking a different question, which may be the root of all my troubles. Is there a directive or "switch" that will allow me to turn off or bypass PyApache from within a .htaccess file? I do not have control over the server, and I suspect PyApache is the evil one here.

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More ZServer problems
by Christopher G. Petrilli 08 Feb '99

08 Feb '99

Gang, Another ZServer thing, and I've not traced it down, but I think it's related to the truncated images, etc... I've been working on editing my site, and I've got a CSS document that's maybe 40 lines long, and if I add to it early on, it seems to truncate the end in a weird way... putting stuff like this: TD.Sidebar {background-color: % where it used to say: TD.Sidebar {background-color: rgb(245,245,245)} Odd huh? Bizarre, ZopeHTTPServer doesn't do this. Chris -- | Christopher Petrilli | petrilli(a)amber.org

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mailing list split time?
by David Wagle 08 Feb '99

08 Feb '99

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 here's a suggestion. I've sent a number of 'help' requests to the list over the last few weeks. By and large, I get a response sooner or later. A few have gone by unnoticed. In the meantime, a large number of development issues permeate the list. Would it perhaps be to the advantage of the community as a whole to have a zope-development and a zope-help list as seperate entities? Just a thought. - -daw - --------------------------------------------- A computer without Microsoft products is like a dog without bricks chained to its head - --------------------------------------------- -----BEGIN PGP SIGNATURE----- Version: PGP for Personal Privacy 5.0 Comment: Processed by Mailcrypt 3.5.1, an Emacs/PGP interface Charset: noconv iQA/AwUBNrnb2dtGhckXZmDjEQIK3QCffY3bNENjJTGTtfynzhG3NmzjtggAnRBg RnpNAogjJ82jJFCPoNrzN9zP =GHcN -----END PGP SIGNATURE-----

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Products, levers and the dtmlExample folder on zope.org
by The Dragon De Monsyne 08 Feb '99

08 Feb '99

I've been looking thru the dtml example folder that was uploaded to zope.org, for usefull tips & tricks, and it's quite nice. There is one puzzle however that I would like to solve. In the hitcounter example it refers to making the counter a Product to simplify adding it. It says to look at the counter product in the Products directory in the Control Panel for details on how this was done. That product of course isn't there. (minor documentation bug there) I'm going to guess that this is an example of one of those so-called 'Levered' objects I've heard abt, which sound insanely usefull, but which I've been able to find absolutely nil documentation on. Anyone have any docs on these? Or at least an exported version of that hitcounter product, so I can see what one looks like? -The Dragon De Monsyne

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Cavaet with TinyTables and permissions
by Christopher G. Petrilli 08 Feb '99

08 Feb '99

Gang, Don't know if I Created this problem, but... just a little FYI... I use TinyTables a bunch (bless you! :-) to drive a billion things on some web sites I'm designing, and I've been having random weird authentication problems... well, it turns out that it's related to the fact that it seems by default, Anonymous doesn't have permissions to query the TinyTables... just an FYI :-) Chris -- | Christopher Petrilli | petrilli(a)amber.org

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Strange date handling problems
by Ty Sarna 08 Feb '99

08 Feb '99

I'm getting unexpected results when doing computations on DateTime instances. For example, the following should always result in 'd' being the first of the previous month to 'date': d = date - date.day() # 1999/5/14 - 13 = 1999/4/30 d = d - (d.day() - 1) # 1999/4/30 - (30 - 1) = # 1999/4/30 - 29 = 1999/4/1 Thie works great, unless 'date' is in May, in which case I end up with 1999/3/31 instead. A similar computation to find the first of the next month also gives strange results if the start date is in March. In other words, if the correct result is April Fool's, I get something else instead! Another, more involved set of calculations gives incorrect results for most dates in October, but is fine for any other month. What's going on?

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structured text -- again
by Service Informatique CHSR 08 Feb '99

08 Feb '99

I'm not sure my message got sent to the list, so i repost it. My apologies for the waste of bandwith if the message did get through ************************************************************ Hello, let InputTestForm be: ---------------------8<------------------------ <form action=Render> <textarea name=data cols=64 rows=5></textarea> <input type=submit value="Without :text"> </form> <form action=Render> <textarea name=data:text cols=64 rows=5></textarea> <input type=submit value="With :text"> </form> ---------------------8<------------------------ And Render be: ---------------------8<------------------------  ---------------------8<------------------------ Try to fill data and data:text with random values, and you'll see that: - in etiher case, font attributes such as *emphasis* and **bold** are correctly rendered. - but list constructs such as: ---------------------8<------------------------ There are my **items**: - first - second ---------------------8<------------------------ work with "data:text" but do not with "data". The generated source when formatting "data:text" is ---------------------8<------------------------ There are my <strong>items</strong>: <ul> <li>first <li>second </ul> ---------------------8<------------------------ However, the generated source for "data" is: ---------------------8<------------------------ There are my <strong>items</strong>: - first - second ---------------------8<------------------------ which is viewed as: ---------------------8<------------------------ There are my items: - first - second ---------------------8<------------------------ Of course, "items" is strong, but i cannot render this in my mail client :-) This is especially annoying because i get "data" from a database (not from InputTestForm), and SELECT data as data:text from MyTable doesn't work. I have to miss something, or perhaps this is a bug??? The funniest part is: if formatting "data:text" works as expected from InputTextForm, then "data" must be of type "non text". What type is it then? Any input are welcome. Regards, Jephte CLAIN Service Informatique CHSR

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DTML calendar widget
by Ty Sarna 08 Feb '99

08 Feb '99

The was some talk long ago about calendar support of some kind in Principia. I don't know wwhatever became of that or what kind of features people were wanting, but this weekend I sat down and wrote a calendar DTML widget. You can try a sample instance of it at: http://www.endicor.com/zope/test/Calendar Those of you with Palm Pilots will find the interface familar :-) The sample page is generated with this source:   :    The chunk of code within the calendar tag is used to render the individual cells in the calendar display. It's called for each cell with the name 'date' bound to the date to be displayed, and 'mode' bound to either 'day', 'week', or 'month' depending on what mode the calendar display is in. The calendar tag takes a few optional arguments, including mode to start in (defaults to 'month') and an expression to compute the date to start on (default to current date if unspecified). Anyway, have a look. If you think it'd be useful to you, let me know!

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