May 2002 - Zope - Zope lists

Re: folders with same names
by Marie ROBICHON 07 May '02

07 May '02

At 02:10 02/05/02 +0000, you wrote: >--- In zope@y..., Marie ROBICHON <robichon@e...> wrote: > > Error Type: KeyError > > Error Value: Parameters > > > Does this mean that in Zope no two folders can have the same id? This > would > > cause problems when our contributors edit their parts of our site. Is > there > > a way around this other than naming the folders differently? I remember > > seeing something about tpId somewhere.... > >I'm having similar problem. I'm wanting to add an object to a container >with a form. I want to check the id of the object first, to see if >there's already one by that name in the database. If there is, I want to >send the user back to try another name. > >Problem is, after I pull the file ID from the REQUEST, I want to use a >dtml-if to check and see if it is there. When the object turns out to not >be there (a good thing, for my purposes) I get a keyerror. > >I noticed that there's a table of parameters you can add to dtml-var, and >it includes a "missing" option, in case the object isn't there. I wonder >if this trick works with dtml-if, as well. > >At any rate, we seem to be working on a similar problem. Have you found >any answers yet? > >Dave Walker No I haven' t found an answer to my problem yet. I think its a problem with acquisition and traversal: I haven't managed to find a way to 'set' the absolute_url so that Zope really gives me the object I want rather than it resolving the object by working down to the root to get the index_html then working back up until it gets the first object with the name.... I remember seeing in section 1.3 of chapter 3 of Dieter Maurer's (excellent) book http://www.dieter.handshake.de/pyprojects/zope/book/chap3.html an explanation of why your problem occurs. What happens if the user tries to create an object whose id already exists? Does this raise an error anyway? If this raises an error couldn' t you trap this error and get the user to try again, rather than trying to check if it doesn' t exist? Getting the zen out of zope is certainly painful....and i'm hundreds of miles away yet... Marie Robichon Web Task Force European Synchrotron Radiation Facility BP 220 38043 Grenoble Cedex France http://www.esrf.fr Tel: (33) 04 76 88 21 86 Fax: (33) 04 76 88 24 27

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Re: [Zope] Zope newsgroup?
by Anthony Baxter 07 May '02

07 May '02

>>> Uwe Schuerkamp wrote > is there a zope newsgroup out there in usenet-land? This mailing list > is getting quite a bit of traffic, and I think it would be easier to > organize in a newsgroup or two. You might think that, I disagree. But then, I read comp.lang.python via the mailing list. I think this has come up on a number of occasions, and no-one's volunteered to do the work to get the newsgroup created. I know I don't read usenet at all (except, as noted, for some that are gatewayed to/from email) and I suspect I'm not the only person on this list that wouldn't bother with the newsgroup. Anthony -- Anthony Baxter <anthony(a)interlink.com.au> It's never too late to have a happy childhood.

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Re: [Zope] DCOracle 2 and long text fields..How to use them?
by Geir Bækholt 07 May '02

07 May '02

Hello Chris, You have to use bind-variables or a stored procedure. Oracle or the adapter (not sure which) don't want those huge strings in the middle of an SQL statement it has to parse.. :-) hth Friday, May 3, 2002, 11:49:15 PM, you wrote: CB> Hello, CB> Maybe someone here can help.. CB> I had thought that DCOracle 2 (now) supported long text fields, but CB> when I tried to insert more than 2k into one (after upgrading) I got CB> a 'string literal too long' error from Oracle. CB> Is there some trick to this or am I running into a DCO2 or Oracle limitation? CB> I'm using Oracle 7 which (I think) is supposed to support up to 32k CB> in long text fields.. CB> I'd hate to have to continue working around this in the way I have, CB> by using Oracle7's 2k(max) varchar2 columns and splitting text in CB> Python on input/concatenating them together on output.. That is just CB> ugly.. CB> There must be a better way... CB> Also, is there any way to use the LONG RAW datatype to store images? CB> We are using Zope with Oracle as a CMS and need the long text CB> capability for descriptions within web pages.. CB> BTW...We are a nonprofit and can't afford the upgrade to Oracle 8/9.. etc. CB> -Chris -- Geir Bækholt web-developer geirh(a)funcom.com funcom oslo | webdev-team

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new data types
by dman 06 May '02

06 May '02

I want to create some new data types for use in my zope application. I want to do this as simply as possible. I have a fair amount of experience developing OO software (python, java, c++, eiffel); actually writing the classes is not an issue. I found that I can create and return a class/instance from an External Method, but a Page Template and a Python Script are not allowed to access any attributes on the object. I think that a ZClass or Product is more involved than I really need, though I may want to move towards a Product if I find that performance is an issue. What is the simplest way to create new data types in zope? TIA, -D -- Thy Word is a lamp unto my feet and a light unto my path. Psalms 119:105 GnuPG key : http://dman.ddts.net/~dman/public_key.gpg

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Betreff
by Immer frischer Kaffee 06 May '02

06 May '02

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Re: your mail
by Martijn Pieters 06 May '02

06 May '02

On Mon, May 06, 2002 at 09:32:47AM +0200, Bennie wrote: > Hi I am one of those idiot users that played around with SiteRoot and now > cannot access Zope anymore. > I've seen the documentation about "(put _SUPPRESS_ACCESSRULE or > _SUPPRESS_SITEROOT in the right place in your URL) ", but the question is > where in the URL do I put this? Could you please help me out here. I believe that it can go anywhere in the URL; have you tried to put it in at the root? You're best bet to get answers is by using the mailingslists; I have cc-ed this to zope(a)zope.org. -- Martijn Pieters | Software Engineer mailto:mj@zope.com | Zope Corporation http://www.zope.com/ | Creators of Zope http://www.zope.org/ ---------------------------------------------

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Forms, RESPONSE, REQUEST, and redirect
by Dennis Allison 06 May '02

06 May '02

It has been a long day... So, I have been trying to bend Zope to my will and making some progress. But this one has me a bit befuddled either because I'm tired or because I am missing something. Here's what I am trying to do... I have a method (in the particular case at hand, it is an External Method, but it could be a Python Script or DTML). It gets control, gets access to its REQUEST and RESONSE objects and does something. In particular, it arranges some computation and modifies some REQUEST values, and possibly adds some new ones. It then redirects to another object, this time a DTML document which, when it renders, will want access to the initial REQUEST object data as modified. To make things explict: If I make a form which has a form variable 'a', that variable is visible at my script. I can also create a new variable 'b' and put it in the REQUEST object with a REQUEST.set(name,value) call. But, when I direct from the script to another script (in this case, the original form), the REQUEST object does not include these values. If I then change the form action to not go to the script but to simply return to the form, the form renders itself (without the data mods my script was supposed to provide) since it has a copy of the REQUEST object that includes the form variables. Bottom line, how does one trick ZPublisher into marshalling some or all of the name-item pairs on redirection. Thanks for help.

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operational error!!!(databse MySQL)
by Bala 06 May '02

06 May '02

Hi All, I installed zope in my machine and testing and learning with small test programs for database access. when I try to open a ZMySQL connection with the commands as Id : MySQL_database_connection Title : Z MySQL Database Connection Connection String : testdb bala testpassword and then when I press add I am getting the error as Error Type: OperationalError Error Value: (2002, "Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2)") I am using OS : Linux 7.1 (kernel 2.4.2) Zope : Zope-2.5.1 python : python-2.1.3 mysql : mysq-3.23.49 ZMySQLDA : ZMySQLDA-2.0.7 ZODBCDA : ZODBCDA-3.1.0b1 pls help me find out the reason for this error, I am new to zope. Thanks in anticipation, Bala. __________________________________________________ Do You Yahoo!? Yahoo! Health - your guide to health and wellness http://health.yahoo.com

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Re: [Zope] Forms, RESPONSE, REQUEST, and redirect
by H.de.Wit＠SFK.NL 06 May '02

06 May '02

>It then redirects to another object, this time a DTML >document which, when it renders, will want access to the initial REQUEST >object data as modified. If i understand you well enough, this one could help you: http://www.zopelabs.com/cookbook/992031125 Hans de Wit Stichting Farmaceutische Kengetallen Postbus 30460 2500 GL DEN HAAG Tel. 070-3737448 Fax 070-3737445

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RE: [Zope] timeout, thread, and external connections
by Warnes, Gregory R 06 May '02

06 May '02

Dieter, This sounds promising. Where would you suggest that I look for documentation about this? So far, google has turned up http://www.python.org/workshops/2000-01/proceedings/papers/fulton/zodb3.html , and http://www.zope.org/Documentation/ZDG >From that it looks like I will need to put the connection to the outside process in a _v_something attribute, override the __getstate__ to properly serialized the state of that process and __setstate__ to properly restore the state. It seems that each zope thread may end up with a different copy of the object. For my purpose, this is not desirable. Is there a way to ensure that there is exactly one copy of my process wrapper? Thanks, Greg > -----Original Message----- > From: Dieter Maurer [mailto:dieter@handshake.de] > Sent: Sunday, May 05, 2002 4:26 PM > To: Warnes, Gregory R > Cc: zope(a)zope.org > Subject: Re: [Zope] timeout, thread, and external connections > > > Warnes, Gregory R writes: > > ... > > Now, I want to the connection to the external process to > 'timeout' after a > > period of inactivity > I would not worry about my own timeouts or my own process management > but delegate that to the ZODB. > > When you assign a process wrapper for your process to a > "_v_" attribute, > then the wrapper instance is destroyed when the objects is flushed > from the ZODB cache. This would be a good time to kill the process. > > > Dieter > LEGAL NOTICE Unless expressly stated otherwise, this message is confidential and may be privileged. It is intended for the addressee(s) only. Access to this E-mail by anyone else is unauthorized. If you are not an addressee, any disclosure or copying of the contents of this E-mail or any action taken (or not taken) in reliance on it is unauthorized and may be unlawful. If you are not an addressee, please inform the sender immediately.

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