May 1999 - Zope-Dev - Zope lists

user folder - NT security
by htrd90＠zepler.org 08 May '99

08 May '99

I am about to deploy Zope on an mostly NT based intranet. It would be convenient if the users did not have to remember yet another password. The best approach seems to be a custom user folder that authenticates using NT security.... Ill develop this myself if noone can point me to a ready made solution? Toby Dickenson

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RE: [Zope] Z Classes Tutorial: Rough Draft
by Michel Pelletier 08 May '99

08 May '99

> -----Original Message----- > From: tsarna(a)endicor.com [mailto:tsarna@endicor.com] > Sent: Friday, May 07, 1999 6:34 PM > To: zope(a)zope.org > Subject: Re: [Zope] Z Classes Tutorial: Rough Draft > > > In article > <613145F79272D211914B0020AFF6401915C3FA(a)gandalf.digicool.com>, > Michel Pelletier <michel(a)digicool.com> wrote: > > A better solution is to create a Python class (in a Product) and > > sprinkle a little ZClass magic pixie dust in the __init__.py file to > > make the Python class (PClass) subclassable by a ZClass. > Thus when you > > Is there and example of this you can point us at? ("Hey, Mr. Zope > Pusher, I need some magic pixie dust" :->) > (I've moved this thread to zope-dev) I thought I immediately followed to original message with a message containing the magic? Well, I didn't completely explain the magic anyway. Product __init__.py files used to contain attributes which defined some Product meta-data that Zope cared about, like meta_type, icon, __ac_permissions__ etc. These things are now actively registered with a method call: import MyModule def initialize(context): context.registerClass(MyModule.MyClass, permission='Add My Object' constructors=(MyModule.addMyClassForm, MyModule.addMyClass,), icon='MyIcon.gif', ) 'permission' is a permission that protects the constructors. The first element of the 'constructors' tuple is the method that gets called when the use selects the Class to be added (usually a form). Further elements are methods that you may want to protect under 'permission'. addMyClass, for example, is called by addMyClassForm, so you'll want them both to be guared by the 'Add My Object' permission. 'icon' is, I assume, farily obvious. This is how normal products get registered. Lets say however that you wanted to make a Product class subclassable? import MyModule def initialize(context): context.registerBaseClass(MyModule.MyClass) Both registerClass and registerBaseClass can be called in the same initialize, thus Products can be both standalone and subclassable. The old way still works for backward compatability (in fact, in true Digital Creations style, we have left most of our own products the old way, we'll get around to converting them *one* of these days). ;) > > This is interesting. ZClasses didn't look quite powerful enough for > some of the things I'd like to do with them. But a ZClass that > subclassed from a read-write TinyTable would be perfect for many of > those things. > Another beauty of this method is that your underlying Python class need not do anything Zope specific (except for __ac_permissions__ which is just passive meta-data anyway), it need only provide methods and attributes. The upsell of this is examplified in the Catalog. Catalog consists of three class, ZTablesCore, Catalog, and ZCatalog. The first provides a searching, indexing, cataloging mechanism. Other than __ac_permissions__, it has no Zope specific parts. It could be used in an IMAPd server, as an example, for doing searching. The second class, Catalog, is also written in Python and it contains an instance of ZTableCore.ZTable. It provides a wrapper around the Core with some classic Zopeish Python methods that would be too difficult to do in DTML. The third class, ZCatalog, is a ZClass which subclasses the Python Catalog class: it defines a slew of manage_* DTML and publicly available DTML that define the user and managment interfaces for Catalogs. I've been thinking that this three level design is pretty neat, The low level is a reusable component, the middle level deals with any lower level Zope specific stuff, and the ZClass level deals with the interfaces. In NotMail/IMAPAdapter for example, I could have a low level Python Class called IMAPCore which contains all of my connection and instantiation bull, a higher level Python Class called IMAPAdapter which does some of the formatting and User authenication needs for Zope, and a ZClass called NotMail which defines the mailer and managment interfaces. Of course three layers aren't necesary. Two work perfectly if you have no need for such an abstraction. > > In my every-so-slowly-developing Palm Desktop in Zope, I have a screen > that controls the order of conduits. Instead of a "first" button, I > have "Earleir" (swap with one above) and "Later" (swap with one below) > buttons, which seems friendlier. Maybe a First/Earlier/Later/Last (or > First/Up/Down/Last) is what's called for. > This isn't really necesary, because you can pick multiple views before clicking first. For example, if you want to make the first thing last, just pick everything *but* the first then and they will all be put in front of it, thus making it last. Any combination of views may be placed first, which pretty much does everything needed. I have a feeling alot of people are going to ask that question, and my answer is going to be "Just play with it, you'll get it". -Michel > _______________________________________________ > Zope maillist - Zope(a)zope.org > http://www.zope.org/mailman/listinfo/zope > > (For developer-specific issues, use the companion list, > zope-dev(a)zope.org - http://www.zope.org/mailman/listinfo/zope-dev ) >

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Float Conversion
by Jason Spisak 08 May '99

08 May '99

Zope-o-matic fans: Just to add to my last mail, I tried to use float(X) (from the DTML users guide) to convert that string in an external method, and then it changed errors on me. Now instead of a NameError I get a ValueError, which means that it is converting, just not to what is being asked for. The catch is that the property is indeed (I checked and recreated) a floating point property. :-( Anyone have any ideas? Here's the code """ External Methods for MTear """ import string def import_candidate(self,file,REQUEST,RESPONSE,URL2): """ External Method to import Candidate data and build Candidate objects. file is a tab delimited file object (obtained from a file upload form). """ added=0 failed=[] while 1: line=file.readline() if line=="": break fields=string.split(line,'\t') id=fields[0] first_name=fields[1] last_name=fields[2] salary=fields[18] if id=='ID': continue # bogus first line #try: REQUEST.set('id',id) REQUEST.set('first_name',first_name) REQUEST.set('last_name',last_name) REQUEST.set('salary',float(salary)) method=self.manage_addProduct['Candidate'].add method(method,REQUEST=REQUEST,RESPONSE=RESPONSE, DestinationURL=lambda url=URL2: url) added=added+1 #except: # failed.append(title) return """<html> Added %d candidates. Failed to add: %s </html>""" % (added, string.join(failed," ")) Thanks again. -- Jason Spisak webmaster(a)mtear.com

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Unauthorized
by Jason Spisak 07 May '99

07 May '99

Hey ZGang! I've been working with ZClasses for a bit and noticed some authentication issues. After reading Amos's starter kit, I assigned all permissions in the ZClass security tab to the role I wanted to let change the properties, but it won't let me make the changes. When not logged in as a manager, and logged in as this other role, I get the AUTHENTICATION failed. Has anyone else had trouble when using ZClasses with methods that update/manage properties. -- Jason Spisak webmaster(a)mtear.com

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Float conversion in External Method
by Jason Spisak 07 May '99

07 May '99

Zopists, I have and external method that is taking a flat text file and making a Zope object out of each line. I have one field though that is a float type and I tried _.float() and it choked. If I take that field out it works fine. If I don't convert I get a ValueError (of course). I'm getting a NameError. In Zope terms is a NameError when it doesn't recocnize a command (ie _.float)? Is there a specific import I have to do to be able to call _.float? Thanks in advance. -- Jason Spisak webmaster(a)mtear.com

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Re: [Zope-dev] IE5/IE4 and Zope 1.11.0pr11 issues on WIN32
by Robert O'Connor 07 May '99

07 May '99

I confirmed the report earlier with the WIN32 version of Zope 1.11.0pr1 but now I am ***confirming the same thing with the Linux version of ZOPE. *** (under RedHat 5.2) Bottom Line: The new ZOPE doesn't like Bill's Browser (IE5 tested here). ***Some one's got to tell ZOPE that the job requires that it work with Bill's Browser despite Bill's annoying harassment! ;-) -Bob OConnor bob(a)rocnet.com *COPY--- > Anyone else seeing this running Zope on Win32? Hi Brad, I also see this under Win98 IE5 but not with NS4.5. Even when locked up on IE5, I can still use NS4.5 to navigate -- localhost still runs. -Bob OConnor bob(a)rocnet.com ----- Original Message ----- From: Brad Clements <bkc(a)murkworks.com> > I have already submitted a bug report to collector. I can crash > python.exe using IE5 and webdav.. > > IE4 and 5 seems to have trouble getting the management icons from > ZopeHTTPServer. The page download never completes.. > > I upgraded to ZServer, set use_chunked=0 and it's better, but the icon > for "control panel" still won't download correctly. In fact, I get just the top > part of the folder, say about 4 pixels.. >

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Zope�s (1.10.2) build-in server stops working often.
by PP Jose C. Lacal 07 May '99

07 May '99

Zopers: I am using 1.10.2 under RH Linux 5.1 I know I should be using something else, instead of the built-in web server. Yet, I tried to set-up a quick and dirty prototype website with Zope. What can I do to have Zope�s own server work continuously, without manual re-starts every day? TIA Traceback (innermost last): File "ZopeHTTPServer/ZopeHTTPServer.py", line 388, in handle_request self.process_request(request, client_address) File "lib/python1.5/SocketServer.py", line 239, in process_request self.finish_request(request, client_address) File "lib/python1.5/SocketServer.py", line 243, in finish_request self.RequestHandlerClass(request, client_address, self) File "lib/python1.5/SocketServer.py", line 362, in __init__ self.handle() File "lib/python1.5/BaseHTTPServer.py", line 258, in handle method() File "ZopeHTTPServer/ZopeHTTPServer.py", line 292, in do_GET self.publish_module() File "ZopeHTTPServer/ZopeHTTPServer.py", line 305, in publish_module publish_module( File "lib/python/ZPublisher/Publish.py", line 893, in publish_module if response: stdout.write(response) File "ZopeHTTPServer/ZopeHTTPServer.py", line 240, in write self.handler.wfile.write(self.data[:start]+ IOError: (32, 'Broken pipe') === = = = = = \ / = = = = = / \ = = = = = [PP] Jose C. Lacal jose.lacal(a)volks-pc.org Visit my website at http://www.volks-pc.org _________________________________________________________ Do You Yahoo!? Get your free @yahoo.com address at http://mail.yahoo.com

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ACTION: COMExternalMethod and Python for Windows book
by Paul Everitt 07 May '99

07 May '99

OK, I've gotten a few replies by now. I'm attaching a file that contains the outdated COMExternalMethod code. Some action items: 1) Clean it up to make sure it actuall works with the latest Zope and the latest Python COM stuff. 2) For extra credit, improve the code and make it do more/better. 3) For extra credit, actually document it (put some text on the add form, create a useful README, etc.) 4) Help out with the words to go with the book. Below is what Amos started with. One more thing that I ask: I'd love to see someone step forward and coordinate this, including collecting all the contributors (for the Zope CREDITS.txt file) and interfacing with Mark Hammond. You folks rock. Thanks! --Paul >From Amos: I think that there are two important things to cover: * What is Zope? * How does Zope fit into Windows? For the first item I think we already have lots of info. For the second item, I think we should compare Zope to ASP and IIS. We should explain that Zope runs on NT, as a service. We should point out that Zope can be extended with any Python code, including windows specific Python code. For example, you can use COM in External Methods. So to recap: * What is Zope * Web application server * Dynamic content * Ease of management (through the web) * Easy to extend * Open Source * etc.. * Zope and Windows * Zope is integrated with win32 * Runs as a service * Can be extended with win32 specifics like COM * Zope versus ASP * Zope publishes Python objects, not COM objects * Zope not tied to one web server or internet protocol

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DISCUSS: Plea for help!
by Paul Everitt 07 May '99

07 May '99

(Cough, cough, ...) HELP!!!! We have a golden opportunity for Zope. Mark Hammond has offered to let us get several thousand words in the O'Reilly Python for Windows book, slated for August/September release. Anybody that knows how O'Reilly works knows that there isn't much time for changes. I'd like to do something that fits in nicely with the tone of the book (Win32 and COM). While we could just show Zope running, that doesn't reinforce anything else in the book. However, we've had lying around for a long time something *really* cool -- a COM External Method. It was written for Principia about a year ago. As I remember, you put in a COM object (e.g. Excel.OpenWorkbook) and Bobo/Principia/Zope marshals whatever form data is needed, calls the COM function, and returns the result. Kind of magic. Here's what we need: 1) Overhaul of the COMExternalMethod code (one file, 150 lines with comments) to make it a good Zope citizen. 2) The words that describe Zope and give an example using it. If you're interested, speak up -- but *only* if you can turn it around in a week (gulp). --Paul

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More on controlPanel Icon problem with IE4 and 1.11.0pr11, its the .gif
by Brad Clements 06 May '99

06 May '99

Ok, I think the problem is with the original ControlPanel_icon.gif, size 934 bytes. I can't open this file with a graphics editor on my local system, I get "invalid file format". When I download to netscape on BSD using a direct URL of http://myhost/p_/ControlPanel_icon, netscape says "looks truncated, winging it". So .. I don't think its Zope at all. I replaced the .gif in lib/python/ofs/www However I can't seem to find and replace the icon that's in the Zope DB, even though I went back to the original Data.bbb.in file. Suggestions? On 6 May 99, at 18:54, Gilles lavaux wrote: Send reply to: "Gilles lavaux" <gilles.lavaux(a)esrin.esa.it> From: "Gilles lavaux" <gilles.lavaux(a)esrin.esa.it> To: <Zope(a)zope.org> Subject: Re: [Zope] Zope 1.11 difference Date sent: Thu, 6 May 1999 18:54:37 +0200 > Hello > > Just for info: > I have a problem with zope 1.11 and IE 4.0 version 4.72.31.10 > The Zopehttp server serves the document correctly (code 200) but the > browser never display it, I got a timeout. > (This is new for me and I hope it's not a know bug) > > All is ok with netscape 4.05 > > > > Gilles Lavaux > > > _______________________________________________ > Zope maillist - Zope(a)zope.org > http://www.zope.org/mailman/listinfo/zope > > (For developer-specific issues, use the companion list, > zope-dev(a)zope.org - http://www.zope.org/mailman/listinfo/zope-dev ) Brad Clements, bkc(a)murkworks.com (315)268-1000 http://www.murkworks.com (315)268-9812 Fax netmeeting: ils://ils.murkworks.com ICQ: 14856937

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