February 1999 - Zope

a question on external methods
by David Wagle 16 Feb '99

16 Feb '99

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Can someone tell me what I'm doing wrong? I have the VERY simple external methods test.xm and test2.xm defined. They are: from DateTime import DateTime def dwTime(self): t=DateTime() return DateTime.timeTime(t) def dwName(self,REQUEST=None): return "%s" % REQUEST['AUTHENTICATED_USER'] They both work fine from the Zope/manage screen using the 'try-it' tab. When I use them in a test file:     The first () works just fine. but the addition of the second, causes the following run-time error: Traceback (innermost last): File /usr/local/Zope-1.9.0-src/lib/python/ZPublisher/Publish.py, line 879, in publish_module File /usr/local/Zope-1.9.0-src/lib/python/ZPublisher/Publish.py, line 595, in publish (Info: /test_area/test1) File /usr/local/Zope-1.9.0-src/lib/python/OFS/Document.py, line 181, in __call__ (Object: test1) File /usr/local/Zope-1.9.0-src/lib/python/OFS/Document.py, line 177, in __call__ (Object: test1) File /usr/local/Zope-1.9.0-src/lib/python/DocumentTemplate/DT_String.py, line 514, in __call__ (Object: test1) File /usr/local/Zope-1.9.0-src/lib/python/Products/ExternalMethod/ExternalMethod.py, line 266, in __call__ (Object: Item) (Info: ((), {}, (None,))) TypeError: (see above) - --------------------------------------------- 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/AwUBNsnKG9tGhckXZmDjEQJJpwCfeziCLyeaVw0/h3FfcAE2JJ3uQrQAoNbJ E+U2HC4yTS/aZQmJb0XO6YLk =ApHz -----END PGP SIGNATURE-----

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ZOPE ODBC on Linux
by Randall Marbach 16 Feb '99

16 Feb '99

Is it possible for a Zope 1.9 installation running on a linux platform (redhat 5.2) to access a MS ACCESS database located on a different NT server via the ODBC support built into Zope? If not, is there some other way to do this? TIA Randy ____________________________________________________________________ More than just email--Get your FREE Netscape WebMail account today at http://home.netscape.com/netcenter/mail

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"proxy roles", search engine for documentation.
by Anthony Baxter 16 Feb '99

16 Feb '99

Hi, Can someone give a 1-para description of proxy roles? The ZMG mentions them, but not what they are, or do. My guess is that it's like a Unix setuid program - anyone viewing the document gets the changed permissions, for the purpose of loading other objects into that object... On a related note - could a search engine be added to the Zope Documentation area of the site? Please? :) Anthony

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RE: [Zope] a question on external methods
by Brian Lloyd 16 Feb '99

16 Feb '99

> I can't readily explain why this is the case, but it looks like either > a) REQUEST is not being passed in, or > b) REQUEST is None > > The following method: > def dwName(self,REQUEST=None): > > if REQUEST is not None: > return "%s" % REQUEST['AUTHENTICATED_USER'] > else: > return "" > > will run. It will produce the desired result if called directly > (by going to the URL of the method). It does not seem to produce > anything when called from a DTML Method. > > And that's as much as I know :) > > Kevin If you call it from the web, it will work because ZPublisher will automatically pass the REQUEST argument. If you call it from DTML, you have to pass REQUEST yourself:  Brian Lloyd brian(a)digicool.com Software Engineer 540.371.6909 Digital Creations http://www.digicool.com

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RE: [Zope] Extend copy/move protocol to object instantiation?
by Brian Lloyd 16 Feb '99

16 Feb '99

> The copy/move protocol in 'CopySupport.py' is quite nice in that it > allows the object which is being moved/copied to participate in the > operation, including rejecting the operation or cleaning up at the > conclusion of the operation. I found a need for something > similar when > objects are first installed in a folder(ish) location: 'scope out > the neighborhood' and 'make yourself at home' hooks. > > ----------------------------------------------------- > > class anyClass: > > ... > > def addsubs(self): > '''add sub category field names''' > resobj=self.aq_parent.catlist1() > res =[] > for field in resobj._searchable_result_columns(): > res.append(field) > self.fields=res > > def makeyourselfathome(self): > """parent specific installation hook""" > self.addsubs() > > def addAnyClassObject(self,id,title,REQUEST=None): > """Create an Object and install it in its parent Folder > The argument 'self' will be bound to the parent Folder. > """ > ob=anyClass(id) > self._setObject(id, ob) > ob.__of__(self).makeyourselfathome() > if REQUEST is not None: > return self.manage_main(self,REQUEST) > > ------------------------------------------------------------- > > Would it make sense to add another 'op' type to > CopySource._NotifyOfCopyTo() and CopySource._postCopy() to indicate a > 'first home' operation? > > MAM I'd much rather see an eventual Zope event model handle things like this. In the absense of such a beast, we were forced to come up with a workable solution for copy and paste, but its probably not appropriate to try to make that general- purpose. I think it would be much better if you could eventually just define "event handler" methods that interact with a well-known event model to deal with such things, a la: def onObjectAdd(self, event): # Somehow use information in the event to # do some fixup on the added object, etc. ... def onCopyBegin(self, event): ... def onCopyFinish(self, event): ... Brian Lloyd brian(a)digicool.com Software Engineer 540.371.6909 Digital Creations http://www.digicool.com

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Extend copy/move protocol to object instantiation?
by Mark Millikan 16 Feb '99

16 Feb '99

The copy/move protocol in 'CopySupport.py' is quite nice in that it allows the object which is being moved/copied to participate in the operation, including rejecting the operation or cleaning up at the conclusion of the operation. I found a need for something similar when objects are first installed in a folder(ish) location: 'scope out the neighborhood' and 'make yourself at home' hooks. ----------------------------------------------------- class anyClass: ... def addsubs(self): '''add sub category field names''' resobj=self.aq_parent.catlist1() res =[] for field in resobj._searchable_result_columns(): res.append(field) self.fields=res def makeyourselfathome(self): """parent specific installation hook""" self.addsubs() def addAnyClassObject(self,id,title,REQUEST=None): """Create an Object and install it in its parent Folder The argument 'self' will be bound to the parent Folder. """ ob=anyClass(id) self._setObject(id, ob) ob.__of__(self).makeyourselfathome() if REQUEST is not None: return self.manage_main(self,REQUEST) ------------------------------------------------------------- Would it make sense to add another 'op' type to CopySource._NotifyOfCopyTo() and CopySource._postCopy() to indicate a 'first home' operation? MAM

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Re: [Zope] Prevent image-reloading...
by Michael Bernstein 16 Feb '99

16 Feb '99

Andy Smith wrote: > <untested> > >  > <A HREF="pages/> <IMG SRC="images/"></A> >  > > The urls that are generated are identical in each case. > > What's funny is that today I've come across the exact *opposite* problem. > I've got a gif that is being generated dynamically that should be being > updated as the result of use input, but the cached version keep popping up. > > If you know what makes one gif reload and another come back from the cache > then I'm all ears! Ok, It looks as though you are generating relative URL's for those images and links. it is usually much safer to generate fully qualified URL's. Lets say that you have this directory structure: / /images /a /b /c it is entirely possible to go to the folowing URL: www.yourdomain.com/a/b/c/b/c/a/b/a/c/b/images/someimage.gif and actually retrieve the image. Directories are subject to acquisition just like Methods are, so beware of referring to sibling directories as sub-directories when creating relative URL's. The browser (correctly) sees most of these images as having distinct URL's, and so does not retrieve them from the cache. I hope this solves your problem...I'm not sure what to do about your non-reloading image though. Michael.

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New patch MailHost.py part deux
by Martijn Pieters 16 Feb '99

16 Feb '99

I updated the patch for MailHost.py (see my earlier mail), to fix to more problems: - Single dots on a line in the message body are now escaped (so they won't prematurely end the transmission). - The body is now quoted-printable. This _should_ solve any problems your SMTP host might have with the MailHost output. And you can find the patches on: http://www.xs4all.nl/~zmj/Zope/MailHost.1.9.0.patch or http://www.xs4all.nl/~zmj/Zope/MailHost.1.10.0pr1.patch Depending on your Zope version. -- M.J. Pieters, Web Developer | ATMM http://www.atmm.nl | Tel: +31-35-6254545 Fax: +31-35-6254555 | mailto:mj@atmm.nl http://www.atmm.nl/~mj | PGP: http://wwwkeys.nl.pgp.net:11371/pks/lookup?op=get&search=0xA8A32149 ------------------------------------------

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New patch MailHost.py part deux
by Martijn Pieters 16 Feb '99

16 Feb '99

I updated the patch for MailHost.py (see my earlier mail), to fix to more problems: - Single dots on a line in the message body are now escaped (so they won't prematurely end the transmission). - The body is now quoted-printable. This _should_ solve any problems your SMTP host might have with the MailHost output. And you can find the patches on: http://www.xs4all.nl/~zmj/Zope/MailHost.1.9.0.patch or http://www.xs4all.nl/~zmj/Zope/MailHost.1.10.0pr1.patch Depending on your Zope version. -- M.J. Pieters, Web Developer | ATMM http://www.atmm.nl | Tel: +31-35-6254545 Fax: +31-35-6254555 | mailto:mj@atmm.nl http://www.atmm.nl/~mj | PGP: http://wwwkeys.nl.pgp.net:11371/pks/lookup?op=get&search=0xA8A32149 ------------------------------------------

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New patch MailHost.py
by Martijn Pieters 16 Feb '99

16 Feb '99

I updated the patch for MailHost.py (see my earlier mail), to fix to more problems: - Single dots on a line in the message body are now escaped (so they won't prematurely end the transmission). - The body is now quoted-printable. This _should_ solve any problems your SMTP host might have with the MailHost output. -- M.J. Pieters, Web Developer | ATMM http://www.atmm.nl | Tel: +31-35-6254545 Fax: +31-35-6254555 | mailto:mj@atmm.nl http://www.atmm.nl/~mj | PGP: http://wwwkeys.nl.pgp.net:11371/pks/lookup?op=get&search=0xA8A32149 ------------------------------------------

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