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Re: [Zope] copy / paste zclasses problem..
by Tres Seaver 16 Feb '00

16 Feb '00

kent(a)tiamat.goathill.org (Kent Polk) wrote > > (Zope version: Zope 2.1.4 (binary release, python 1.5.2, solaris-2.6-sparc) ) > > I have a ZClass with base classes: ZObject, _ZClass_for_CatalogAware, > _ZClass_for_Folder & ZObjectManager which allows me to create a > tree of my ZClass instances. I would like to be able to cut and > paste my ZClass instances, but when I attempt to paste : > >  <AND> Geir B Hansen <geirh(a)funcom.com> wrote: > > I have two zclasses on my site, one inheriting from > catalogaware(feedbackform), and the other inheriting from catalogaware and > objectmanager (content_document), otherwise no major differecnes. > > .. i can copy and paste feedbackforms to my hearts desire, > but when i try the same operation with a content_document, > zope gives me a : > The object [object id] does not support this operation > Traceback (innermost last): > File C:\PROGRA~1\FUNCOM~1\lib\python\ZPublisher\Publish.py, line 214, in publish_module > File C:\PROGRA~1\FUNCOM~1\lib\python\ZPublisher\Publish.py, line 179, in publish > File C:\PROGRA~1\FUNCOM~1\lib\python\Zope\__init__.py, line 202, in zpublisher_exception_hook > (Object: ElementWithAttributes) > File C:\PROGRA~1\FUNCOM~1\lib\python\ZPublisher\Publish.py, line 165, in publish > File C:\PROGRA~1\FUNCOM~1\lib\python\ZPublisher\mapply.py, line 160, in mapply > (Object: manage_pasteObjects) > File C:\PROGRA~1\FUNCOM~1\lib\python\ZPublisher\Publish.py, line 102, in call_object > (Object: manage_pasteObjects) > File C:\PROGRA~1\FUNCOM~1\lib\python\OFS\CopySupport.py, line 199, in manage_pasteObjects > (Object: ElementWithAttributes) > File C:\PROGRA~1\FUNCOM~1\lib\python\OFS\CopySupport.py, line 374, in _verifyObjectPaste > (Object: ElementWithAttributes) > Copy Error: (see above) There is a bug in the Collector (maybe two, but who can tell when they're "Under Review") on this one. Tres. -- ========================================================= Tres Seaver tseaver(a)palladion.com 713-523-6582 Palladion Software http://www.palladion.com

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Re: [Zope] line continuation
by Tres Seaver 16 Feb '00

16 Feb '00

Jim Sanford <jsanford(a)atinucleus.com> wrote: > > Is there any kind of line continuation character in DTML that could be used > to prevent a method from returning line breaks? > > I have some methods that use a series of DTML tags to do something and > currently I must put everything on 1 line to keep from > getting unwanted line break characters in the rendered method output? I usually just take advantage of the fact that the <dtml-foobar ...> tags are consumed by the DTML parser:: <ul> <dtml-in "objectValues( 'Folder' )" # no line break inside a DTML tag ><li> <a href="&dtml-id;"> <dtml-var id> </a> </li> </dtml-in></ul> (Note that the "comment" will break -- DTML doesn't know from "#" as a comment character). Tres. -- ========================================================= Tres Seaver tseaver(a)palladion.com 713-523-6582 Palladion Software http://www.palladion.com

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class composition
by Francois-Regis CHALAOUX 16 Feb '00

16 Feb '00

Is it possible to affect to a property ZClass object an instance from an onother class? Inheritance in not usefull in my case, composition is better. FR

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The Let Tag How-To?
by Daniel Yoo 16 Feb '00

16 Feb '00

Sorry for bothering you about this, but I've been trying to go through your Let Tag howto. I'm doing this on 2.1.4, and I get the feeling that some features have deprecated. Your example: <dtml-let name="bob" relation="uncle"> <dtml-var name> is your <dtml-var relation> </dtml-let> doesn't work for me; I have to add an additional set of quotes to make it work: <dtml-let name="'bob'" relation="'uncle'"> <dtml-var name> is your <dtml-var relation> </dtml-let> Can anyone explain what changed and why? Quotation itself feels clumsy; is there any way to escape-sequence quotes? In nested DTML/SQL expressions, being unable to use \" seems awkward. Thanks for any help.

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Re: [Zope] Duplicate column name in ZSQL Method
by Tres Seaver 16 Feb '00

16 Feb '00

Martin Fahlgren wrote: > > Thanks a lot for your help! I've tried it out, but it only seems to work > if I do some dirty hacks on the class Results. Otherwise I still get the > "exceptions.ValueError: Duplicate column name" message. > My query looks like this: > > select book.*, borrowing.*, item.*, article.* > from borrowing borrowing, item item, article article, book book > where > upper(book.title) like upper('%<dtml-var title>%') > and upper(book.author) like upper('%<dtml-var author>%') > and upper(book.subject) like upper('%<dtml-var subject>%') > and upper(book.isbn) like upper('%<dtml-var isbn>%') > and item.articleid = book.articleid > and article.articleid = book.articleid > and item.itemid = borrowing.itemid(+) > > /Martin In this case, I think you have two options: * Bite the bullet and name the columns you want from each table. * Supply a Python class as a "pluggable brain" for the result set. This class could embody the knowledge of the columns needed from each table, or mangle their names in order to avoid the conflict. Caveat: I haven't done *any* work with pluggable brains. Tres. -- ========================================================= Tres Seaver tseaver(a)palladion.com 713-523-6582 Palladion Software http://www.palladion.com

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Stripping some bark off the dtml-tree
by Richard Wackerbarth 16 Feb '00

16 Feb '00

Digging in the code a bit, I see that the header and footer, if used, need to be in the standard document format. They MUST start with <dtml-var standard_html_header> and end with <dtml-var standard_html_footer> These variables are used to pass in the proper table indention code instead of page headers and footers. Of course, you can "roll your own" if you are generating non-standard tables. They get passed and you must display them so that you can have a chance to override the nominal algorithm. -- Richard Wackerbarth rkw(a)Dataplex.NET

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Change the error screen for Unauthorized Error?
by Hunter Kelly 16 Feb '00

16 Feb '00

Is there any way to change the screen presented when a user types in the wrong name/password when trying to access a restricted Zope resource? From what I can tell, the page displayed is from somewhat deep in BaseRequest.py... Is there any way to override this? It would be nice to display a page with directions on who to contact, etc, etc instead of the somewhat generic Zope error message. Please cc me on replies, thanks!! Hunter

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Zope w/ FastCGI / mod_rewrite
by Brian Takashi Hooper 16 Feb '00

16 Feb '00

Hi all, I'm setting up Zope to use FastCGI w/ Apache, I followed the How-to by kedai on zope.org and got most of the way, however I still have a few questions: 1. I want to serve my site with the root URL as FastCGI but be able to have absolute URLs sans hostname (i.e. <a href="/images/foo.gif">) resolve properly... if I just use a simple rewrite rule like: ... RewriteRule ^/(.*) /fcgi/$1 [PT] then the top page works, but all the links off this page are based off of <base href>, which gets set to something like http://myhost/fcgi. Base href seems to be inferred by doing some stuff with the SERVER_URL and SCRIPT_NAME environment variables; SCRIPT_NAME gets passed from pcgi set to my FastCGI script name, /fcgi. Is there a good way within the CGI protocol that I can tell Zope that it should ignore SCRIPT_NAME when deciding the base href of my site, since I'm rewriting the URL so that stuff without the /fcgi will get there? For now, I just added a hack to HTTPRequest.py, but as you can imagine, it's ugly :-(. What's the RWTDT right way to do this? 2. I also would like to preserve ScriptAlias and Alias directories on the Apache side more nicely - right now it seems like if I line up some additional rewrite rules for /cgi-bin/, etc. before the fcgi rewrite rule, like: RewriteRule ^/cgi-bin/(.*) /cgi-bin/$1 [L,PT] RewriteRule ^/(.*) /fcgi/$1 [PT] the annoying thing is that sometimes URLs end up passing through the Rewrite engine twice as well (explanation: a Pass-Through is necessary in order to get mod_alias to handle /cgi-bin as a ScriptAlias-ed directory; however, if there's any URL left at that point, i.e. /cgi-bin/myscript/foo/, then /foo/ travels through the Rewrite engine again, according to the logs). This is more of an Apache question than a Zope question - however I think this is also of interest to others who might want to integrate Zope into their existing setup, so if anyone has any suggestions... :-) ! Brian Hooper

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mailhost question
by John Hile 16 Feb '00

16 Feb '00

I've been trying to use the how-to on "How to create a mail form" to send e-mails from our Zope-based site running on Linux. All goes as advertised except that I get an SMTP error 553: Domain Name Required back when I try it if I use localhost as the smtp host name. I sent mail to myself from the admin account on the hosting server and used the domain name in the from address as the Local Host setting in the MailHost object. I tried changing the SMTP host setting to our corporate server (after getting our admin to give permission to the zope server IP addr.) and the error message changes to SMTP eror 551: none Can anyone point me in the right direction here?

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Behavior of <dtml-let>
by Christopher J. Kucera 16 Feb '00

16 Feb '00

I discovered an interesting attribute of <dtml-let> after it was biting me on the nose for awhile. I've got a property, "db_Columns", of type "lines." In my code, I do the following: <dtml-let columns="db_Columns"> ... <dtml-call "columns.append('blahblahblah')"> ... </dtml-let> The append works wonderfully for my "local" variable columns, but as it turns out, it also appends 'blahblahblah' to "db_Columns". I totally understand why this happens, and it certainly makes sense for <dtml-let> to function this way; I just thought that some mention of this feature in the DTML Reference guide (or some such document) could save someone else the trouble of tracking down why a screen is rendering very oddly. Thanks! -CJ

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