November 2000 - Zope

RE: [Zope] Dump .zexp export to readable source?
by Max Møller Rasmussen 08 Nov '00

08 Nov '00

From: Alex Khan [mailto:Alex.Khan@gov.ab.ca] >I can probably learn more from reading other people's code than by reading >the fragmented documentation. >I can do this easily with products but not zexp's. Thanks in advance... zClasses are not written in Python so there is no code to see. Except fot the dtml code and you can see that when you have imported a zClass product. Regards Max M

2 1

Needed: DCOracle C++ code on which SWIG was used
by Alwyn Schoeman 08 Nov '00

08 Nov '00

Hi all, It is a real pain in the b to get a C++ library to use with Oracle 8 on Solaris.... Can someone please send me information on getting the C++ code used to generate the python wrappers with SWIG? Thank you -- ~~~~~~~~~~~~~~~ Alwyn Schoeman The clock on the wall keeps moving, time stands still. No matter how the dice may fall, someone else always gets to call the number.

1 0

re: uploading to Zope with Mac Browser
by Jeffrey P Shell 08 Nov '00

08 Nov '00

> Zope list: > > This zope method for uploading images to server: > > <dtml-call > expr="manage_addImage( id=title, file=file, title=title)"> > > ...works great from a PC. But from a Mac (netscape And IE) it does not work. > Netscape doesn't work? That's odd. IE had some problems before 5.0, some of which could be fixed in the Internet control panel (in recent Mac OS versions) or in Internet Config (I'm not sure how deeply Netscape uses these). Since the Mac OS has the benefit\curse of the forked file system, almost any file on the system has extra data about it stuffed in the Resource Fork (ie - information about which app to designate as 'creator', allowing you to have JPEGs that open in different applications for example). Most of the universe operates on a single forked system, which contains just the data. So there are sometimes problems sharing Mac files with the rest of the world. Usually it works fine as only the Data fork is used, but some programs tend to botch the handling of this. IE was one of them. The settings to try to fix this are usually found in the preferences that handle File Mappings (or File Helpers) (which lets the OS know how to deal with incoming data). It's a preference panel in both browsers, and can be found on the Advanced tab of the Internet control panel. Find the mapping for .gif and other extensions or mime types you're interested in and look at the settings for handling it. There should be an option for how to treat the data, with at least the two options of "Text" and "Binary". There should also be an option to specify whether it's Macintosh data. **Turn this option off**. Make sure that the "Map Outgoing" option is checked if it's available. If the browser is working properly, it should only send the data fork at that point. This is broken in MacIE 4.x for images and text, but works for other file types (like mp3). I've had no problems with IE 5 that weren't fixable by checking on my settings. For file uploads, Netscape has never been a problem for me since the file upload option showed up (1.x?). But again, I practically never use Navigator anymore. This was the critical issue keeping me away from MacIE, and MS finally fixed it in 5. Jeffrey P Shell, jeffrey(a)Digicool.com http://www.digicool.com/ | http://www.zope.org

2 1

Dump .zexp export to readable source?
by Alex Khan 07 Nov '00

07 Nov '00

As a newbie it sure would be nice to dump out all the code from a zexp to study the source. I can probably learn more from reading other people's code than by reading the fragmented documentation. I can do this easily with products but not zexp's. Thanks in advance... Alex Khan alex.khan(a)gov.ab.ca <mailto:alex.khan@gov.ab.ca>

1 0

acessing parameters in a "helper class"
by Max M 07 Nov '00

07 Nov '00

I have the below class "mxm_guestbook_base" that is subclassed by a zClass. So far so good. But when in a "index_html" dtml-method I try to acces the value "author" of the "aComment" class returned in the "getAllComments" method like so: <dtml-in getAllComments> <dtml-var author> <dtml-var comment fmt=structured-text> </dtml-in> I get the following traceback: ----------------------------------------------- Traceback (innermost last): File C:\mxmZope\lib\python\ZPublisher\Publish.py, line 222, in publish_module File C:\mxmZope\lib\python\ZPublisher\Publish.py, line 187, in publish File C:\mxmZope\lib\python\ZPublisher\Publish.py, line 171, in publish File C:\mxmZope\lib\python\ZPublisher\mapply.py, line 160, in mapply (Object: index_html) File C:\mxmZope\lib\python\ZPublisher\Publish.py, line 112, in call_object (Object: index_html) File C:\mxmZope\lib\python\OFS\DTMLMethod.py, line 172, in __call__ (Object: index_html) File C:\mxmZope\lib\python\DocumentTemplate\DT_String.py, line 528, in __call__ (Object: index_html) File C:\mxmZope\lib\python\DocumentTemplate\DT_In.py, line 691, in renderwob (Object: comments) File C:\mxmZope\lib\python\OFS\DTMLMethod.py, line 194, in validate (Object: index_html) File C:\mxmZope\lib\python\AccessControl\SecurityManager.py, line 139, in validate File C:\mxmZope\lib\python\AccessControl\ZopeSecurityPolicy.py, line 159, in validate Unauthorized: author ----------------------------------------------- It seems that I have a problem accessing values in the objects inserted in self.comments list. If I just self.append('some comment') directly as a string I have no problems acessing the comments as "sequence-item". It is only when inserting an object into the list I cannot access it. Anybody has any ideas? ----------------------------------------------- index_html (dtml-method): ----------------------------------------------- <dtml-var standard_html_header> [<a href="add_comment">Ny kommentar</a>] <dtml-in getAllComments> <dtml-var author> <dtml-var comment fmt=structured-text> <center><hr height=1 noshade width=90%></center> </dtml-in> [<a href="add_comment">Ny kommentar</a>] <dtml-var standard_html_footer> ----------------------------------------------- class aComment: ' ' def __init__(self, comment, author): self.comment = comment self.author = author class mxm_guestbook_base: """ A base class for guestbook products """ def __init__(self): self.comments = [] def addComment(self, comment='', author='' , RESPONSE=None): "Adds a comment" self.comments.append(aComment(comment, author)) self._p_changed = 1 # Trigger persistence RESPONSE.redirect('index_html') def deleteAllComments(self, RESPONSE=None): "Deletes all comments" self.comments = [] RESPONSE.redirect('index_html') def deleteComment(self, id, RESPONSE=None): "Deletes a single comment" del(self.comments[id]) self._p_changed = 1 # Trigger persistence RESPONSE.redirect('index_html') def getAllComments(self): "returns a list of all comments" return self.comments ----------------------------------------------- Regards Max M Max M. W. Rasmussen, Denmark. New Media Director private: maxmcorp(a)worldonline.dk work: maxm(a)normik.dk ----------------------------------------------------- Specialization is for insects. - Robert A. Heinlein

1 0

Re: [Zope] XMLRPC accessing Zope DTML/SQL methods
by Dieter Maurer 07 Nov '00

07 Nov '00

Mayers, Philip J writes: > I have an SQL query method backed by a persistent DB connection. I want to > call that method over XMLRPC remotely. How do I do that? Namely, how do I > pass named arguments to the SQL method? I have looked at XMLRPC some time ago, but I forgot most details: If XMLRPC supports keyword (i.e. named) parameters, then Zope will handle the parameter passing transparently for you. You must use the same keyword parameters your have defined in the ZSQL method. If XMLRPC supports only positional (i.e. unamend) parameters then you must use as a wrapper a method type that supports positional parameters (Python method/External method). > Also, I did some simple External Method examples, and acquisition doesn't > seem to work as advertised: This: > > def testf(self, REQUEST): > return self.index_html() > > Gives an error "standard_html_header not found". What's going on? When you call DTML objects yourself, you must pass the context explicitely: return self.index_html(self,REQUEST) Dieter

1 0

Re: [Zope] Checking for ID's before creating ZClass
by Dieter Maurer 07 Nov '00

07 Nov '00

Ivan Cornell writes: > .... > How do I check for all existing id's in a folder? .... The method "objectIds" of a folder returns the list of ids in that folder. Dieter

1 0

Re: [Zope] PythonMethod and accessing objects in the ZODB
by Dieter Maurer 07 Nov '00

07 Nov '00

Hannes Grund writes: > I'm using the PythonMethod product (latest Version) and Zope2.2.2. > The method lives inside a ZClass, which has an common instance > propertysheet. Also the method gets an 'self' as argument. > > Question 1: > How do i access the attributes stored within this propertysheet > within the method, > while self.title and self.id gives the desired results. > self.propertysheet.propertyname (among other experiments) > raises an error. There are API's for "PropertySheetManager" and "PropertySheets". Use them for access. > Question 2: > How do I access objects stored elsewhere in the ZODB, > for example > self.REQUEST....path_to_object.object That looks a bit strange. You can either access objects from self via acquisition: (e.g.) self.o.child or use the method "restricted_traverse" (--> API documentation). Dieter

1 0

OO and ZClasses ?
by Douglas Daniel Del Frari 07 Nov '00

07 Nov '00

My main doubt using the Zope, is as to implement the OO concepts using the Zclasses. In the Z Classes, the attributes will be created in the " Property Sheets "? The operations will be created in the border " Methods "? The aggregation concept will be used using " Subobjects "? Question 2 is my main doubt. I am thankful all -- ----------------------------------------- Douglas Daniel Del Frari ----------------------------------------- Brazil, RS ----------------------------------------- mailto:gaucho@detec.unijui.tche.br http://labinf.detec.unijui.tche.br/~gaucho -----------------------------------------

1 0

PythonMethod and accessing objects in the ZODB
by Hannes Grund 07 Nov '00

07 Nov '00

I'm using the PythonMethod product (latest Version) and Zope2.2.2. The method lives inside a ZClass, which has an common instance propertysheet. Also the method gets an 'self' as argument. Question 1: How do i access the attributes stored within this propertysheet within the method, while self.title and self.id gives the desired results. self.propertysheet.propertyname (among other experiments) raises an error. Question 2: How do I access objects stored elsewhere in the ZODB, for example self.REQUEST....path_to_object.object will raise an error...... Thanks in advance. Hannes.

2 1