June 2000 - Zope - Zope lists

problem with the beta
by frank cuzzocrea 26 Jun '00

26 Jun '00

i am using 2.2 Beta 2 and every time i attempt to add a new folder, or a dtml document, i keep having this error Error Type: SuperCannotOwn Error Value: Objects cannot be owned by the superuser I never got this with 2.1.6 is this an error in the 2.2 beta 2 version, or do u think i just have a bad copy. i am going back to the 2.1.6 version till i find out Frank from Miami ___________________________________________________________________________ Visit http://www.visto.com/info, your free web-based communications center. Visto.com. Life on the Dot.

2 1

RE: [Zope] More verbose zope errors
by Chris McDonough 26 Jun '00

26 Jun '00

Do a view source on the page to show the traceback contents when they don't show up within the page body. > -----Original Message----- > From: ethan mindlace fremen [mailto:mindlace@digicool.com] > Sent: Monday, June 26, 2000 11:08 AM > To: Riku.Voipio(a)tietoenator.com > Cc: zope(a)zope.org > Subject: Re: [Zope] More verbose zope errors > > > Riku Voipio wrote: > > > > Hi, > > > > Is there any way to meke Zope be more verbose when hitting errors? > > Something like: > > > > Error Type: TypeError > > Error Value: illegal argument type for built-in operation > > > > <rant> > > Sucks it ass off to find where it came from. What operation? > > what argument? what line? > > Are you saying that the traceback (found commented out in the source > code of the page) is unhelpful? Also, if you start zope with the -D > flag, the tracebacks will be uncommented (will show up on the page). > > -- > ethan mindlace fremen > Zopatista Community Liason > > _______________________________________________ > 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 ) >

1 0

RE: [Zope] Unique Identifiers for Zope Objects
by Chris McDonough 26 Jun '00

26 Jun '00

> I'm looking for an internal globally unique identifier for > objects in my > Zope store. The object path would be that. > I know that I can use id=object.absolute_url() to create an > identifier and > then <something>.resolve_url(id) to recover the object from > the identifier > -- but I have two problems with this API: > > 1. The URL is not really a global identifier, as resolving it seems to > depend on the <something> from which I call resolve_url(). > In particular, > if the id is created when Zope is running normally (as a service), and > resolved when running Zope from the command line debugger, the resolve > fails. This is not good. Yes, the REQUEST object is not available during a command line session. This can be a real pain. What you can do is (in Zope 2.2) use 'unrestrictedTraverse()' and 'restrictedTraverse()' in combination with the string.split() of the relative URL as obtained via ob.absolute_url(relative=1), e.g. ob = self.myob oburl = ob.absolute_url(1) obpath = string.split(oburl, '/') obpath.insert(0, '') # a null string as the first item in the [un]restrictedTraverse list means relative to root sameob = self.unrestrictedTraverse(obpath) (this is untested, I think it's right...) > 2. The need to locate an object <something> carrying the resolve_url() > function is a problem; in particular, I would find it helpful > if I could > resolve my global identifier from within a __setstate__() > method (where I > have no access to local Zope variables), so I really want a > genuinely global > function for resolving my id. > > Any suggestions, or do I have to dig into the (disagreeable > and uncommented) > bowels of Zope and write my own? Well... if you don't plan on using mountable database features within Zope, each Zope object will have an attribute "_p_oid", which is the 64-bit object id (stored as a string) that is used by the storage to keep current and historical revisions to the object. It's not recommended that you base an extensible system on this attribute, however, because using multiple storages within a single Zope instance (such as when you use mountable databases) almost guarantees that this identifier will not be unique. I believe that mountable databases in Zope will quickly become a common implementation practice. I wouldn't suggest writing your own GUID generator for general-purpose Zope objects. I would promote the use of [un]restrictedTraverse and use the object path as a unique ID. See also: http://www.zope.org/Members/michel/Projects/Interfaces/Traversal and http://www.zope.org/Members/michel/Projects/Interfaces/ObjectPublishing

1 0

More verbose zope errors
by Riku Voipio 26 Jun '00

26 Jun '00

Hi, Is there any way to meke Zope be more verbose when hitting errors? Something like: Error Type: TypeError Error Value: illegal argument type for built-in operation <rant> Sucks it ass off to find where it came from. What operation? what argument? what line? Another mayor annoyance is that the sql used is shown when calling for dtml documents, but if if we have a chain dtml-doc->dtml-meth->zsql-meth, only the oracle error is shown.... </rant> -- Riku Voipio riku.voipio(a)tietoenator.com 09-862 60764

2 1

URL parsing error in 2.2.0b2
by T.J. Mannos 26 Jun '00

26 Jun '00

I used to be able to use URLs like this in Zope 2.1.6: http://mysite.com/somepage?url=http://somewhere.com In Zope 2.2.0b2, I get a "404 File Not Found" error. Do I need to URL-quote the address now?

1 0

Re: [Zope] Zope 2.1.6 Bug?
by Anders Holmbech Nielsen 26 Jun '00

26 Jun '00

hi, this is a strange error. I have just tried on my win nt 4.0 Zope 2.1.6 with the same result. >I'm running Zope 2.1.6 under Windows 2000. I've encountered a >situation where I can cause Zope to completely hang. For example, >if I create a DTMLMethod called test in the root folder and give it >this contents (leading spaces on the table tag are important): > > <table width="100%" border="0" cellspacing="0" cellpadding="0"> > <tr> > <td>Hello</td> > </tr> > </table> > >and click the View tab, the page displays as expected. However, if >I edit this to look like this: > > <table width="100%" border="0" cellspacing="0" cellpadding="0"> > <tr> > <td>Hello</td> > </tr> > <tr> > <td>Goodbye</td> > </tr> > </table> > >and click View, Zope goes off and never returns. The Python.exe >file continues to consume CPU but doesn't display anything. > >However, if I remove the leading spaces before the table tags, save >my changes and then click View, the contents are displayed >immediately. I then experimented with adding one space before the >tag. The contents displayed, but after a pause. Two spaces paused >longer. > >Can anyone else verify this behavior? > >Thanks. > >James W. Howe mailto:jwh@allencreek.com >Allen Creek Software, Inc. pgpkey: http://ic.net/~jwh/pgpkey.html >Ann Arbor, MI 48103 > > >_______________________________________________ >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 ) -- Regards ------------------------------------------------- Anders Holmbech Nielsen | Tlf: (+45) 70 22 56 00 Software Engineer | Fax: (+45) 70 22 57 00 Integrator Uniware A/S | http:/www.integrator.dk

2 1

RE: [Zope] help a zope newbie
by Chris McDonough 26 Jun '00

26 Jun '00

> I have seen few site powered by Zope. One thing I had noticed > is that almost > all of those sites are mostly static pages. I mean I am > interested to see > how can Zope be used for a portal. like containing many pages > having lots of > form variables. database connectivity etc. what is the > performance then. While it may appear that these sites are "static", they are probably very dynamic. Sites based exclusively on Zope do not serve *any* static content, all content is generated dynamically. See http://www.codecatalog.com for an example of a site which does a lot of forms processing and database lookups. It is based on Zope.

1 0

Zope 2.1.6 Bug?
by James W. Howe 26 Jun '00

26 Jun '00

I'm running Zope 2.1.6 under Windows 2000. I've encountered a situation where I can cause Zope to completely hang. For example, if I create a DTMLMethod called test in the root folder and give it this contents (leading spaces on the table tag are important): <table width="100%" border="0" cellspacing="0" cellpadding="0"> <tr> <td>Hello</td> </tr> </table> and click the View tab, the page displays as expected. However, if I edit this to look like this: <table width="100%" border="0" cellspacing="0" cellpadding="0"> <tr> <td>Hello</td> </tr> <tr> <td>Goodbye</td> </tr> </table> and click View, Zope goes off and never returns. The Python.exe file continues to consume CPU but doesn't display anything. However, if I remove the leading spaces before the table tags, save my changes and then click View, the contents are displayed immediately. I then experimented with adding one space before the tag. The contents displayed, but after a pause. Two spaces paused longer. Can anyone else verify this behavior? Thanks. James W. Howe mailto:jwh@allencreek.com Allen Creek Software, Inc. pgpkey: http://ic.net/~jwh/pgpkey.html Ann Arbor, MI 48103

3 2

Re: [Zope] Internationalization
by Dieter Maurer 26 Jun '00

26 Jun '00

Dan Rusch writes: > We have a site that is composed of several hunderd pages. We don't use > classes but we have made heavy use of aquistion though. For example we > have one back button that is aquired thoughout the site etc etc. > Basically if the functionality (or code) is used in more than one place > it has been but into a method and aquired. Aquisition should play well with internationalization. You would put the localization into the aquired objects. If the language information is e.g. in a cookie, you could use its value to select the various language variants of your object. If the language information is in the URL, I probably would extend the Zope folder class to a LangFolder. It would behave exactly likes a normal folder, but would add an "LANGUAGE" variable to the REQUEST object during traversal. To select the correct localization of an object, you could have language folders for each language containing the localizations for the respective language. If we assume, that all the id's are unique, DTML code similar to this can be used for selection: <dtml-with "_[LANGUAGE]"> <dtml-var "_[id]"> </dtml-with> Dieter

2 1

embed an SQL method inside a <dtml-in> tag
by wai＠mahirnet.com 26 Jun '00

26 Jun '00

Hi, I tried to embed an SQL method statement inside my <dtml-in> listing, the problem I'm facing was, will Z sql method detact the value I passed in, let say : # This is my first listing <dtml-in abc_sql_statement> #another sql_statement <dtml-in bcd_statement> <dtml-var xyz> <dtml-in> </dtml-in> # The bcd_statement will not be requested by a form The reason being I do this is because I need to do some interaction in the results of bcd_statement. Any one can help or done this before ?? Please help. Cheers Wai

2 1