February 2001 - Zope

Re: [Zope-dev] ProxyPass and SiteAccess getting REMOTE_ADDR
by Ragnar Beer 13 Feb '01

13 Feb '01

>Btw. with a small module it's even possible to log the usernames with apache, >something medusa isn't capabable of afaik (as of zope version < 2.3). Very interesting! How do you do that? Ragnar

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Putting objects into CoreSessionTracking?
by Etienne Labuschagne 13 Feb '01

13 Feb '01

Hi there I have a normal python class. The class have as attribute a list. The list is used to store COM objects. I want to instantiate an object (instance of the class above) and then: I want to put the object into a CoreSessionTracking sessionData object so that the object can live as long as the user's session lasts. I want to add and remove com objects in the object's list. When I try to do this, the object will live for a while and then suddenly dissapear (it seems random to me). All the other simple attributes in the session object is not affected (so the session object did not timeout or something). When I tried making the simple python object a persistent Zope object, I ran into cPickle hassles with the COM objects in the list which I cannot resolve. What must I do to make my atbitrary object stay alive inside the sessionObject? Etienne Tel: (012) 348 4586 Cel: 082 442 8981 Fax: (012) 361 8355

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Mailhost change in 2.3.0
by Stephan Goeldi 13 Feb '01

13 Feb '01

Be careful after an upgrade to 2.3.0 when you use productive MailHosts: I discovered that my contact form didn't work any more after I upgraded to 2.3.0. After some change it worked again. In 2.2.5 I could use the following reportAction content: to: <dtml-var send_to> from: contactform subject .......... Now in 2.3.0 I MUST use: to: <dtml-var send_to> from: contact(a)goeldi.com subject .......... So it seems, that with 2.3.0 Zope checks the form and correctness of a mail address. Right? -goe- http://www.goeldi.com/e _________________________________________________________________________ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com.

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cPickle.PicklingError in Connection.py when saving reference to a class method
by Grégoire Weber 13 Feb '01

13 Feb '01

Hi people, I tried to save a method reference to the ZODB (see below at #####). The nop method acts as default method to be called in do_something() if an other module using the class does not register itself a method. Zope 2.3.0 (and also 2.2.4) prints the error shown below which I do not understand. I'am using Zope under NT4SP6us. The same error occures in register_method(). Do I do something wrong? Or is there a bug in Zope? Or is this kind of thing not possible with the ZODB? Thanks in advance, Greg P.S.: As it seems my approach is correct (from the python view), as the code snipped at the end of the e-mail shows. But if there is somebody on the list who knows a better solution, please let me know! #------------------------- code fragment ------------------------- import Globals from Globals import Persistent, Acquisition import AccessControl import OFS class Calendar(OFS.SimpleItem.SimpleItem): """ a calendar object """ def nop(self, beg, end): return '' def __init__(self, parentFolder, id): self.method = self.nop ##### <-- if I clear this line the error ##### disappears self.id=str(id) self.title='' parentFolder._setObject(id, self) return parentFolder._getOb(id) # as in OSF/Folder.py def register_method(self, method): self.method = method def do_something(): ... value = self.method(start_date, end_date) ... #------------------------- zope error message ------------------------- Zope Error Zope has encountered an error while publishing this resource. Error Type: cPickle.PicklingError Error Value: Cannot pickle objects. Troubleshooting Suggestions The URL may be incorrect. The parameters passed to this resource may be incorrect. A resource that this resource relies on may be encountering an error. For more detailed information about the error, please refer to the HTML source for this page. If the error persists please contact the site maintainer. Thank you for your patience. Traceback (innermost last): File D:\prog\zope\lib\python\ZPublisher\Publish.py, line 222, in publish_module File D:\prog\zope\lib\python\ZPublisher\Publish.py, line 187, in publish File D:\prog\zope\lib\python\Zope\__init__.py, line 221, in zpublisher_exception_hook File D:\prog\zope\lib\python\ZPublisher\Publish.py, line 175, in publish File D:\prog\zope\lib\python\Zope\__init__.py, line 235, in commit File D:\prog\zope\lib\python\ZODB\Transaction.py, line 252, in commit File D:\prog\zope\lib\python\ZODB\Connection.py, line 358, in commit (Info: (('Products.HOOP.Calendar', 'Calendar'), '\000\000\000\000\000\000\024=', '')) cPickle.PicklingError: (see above) #------------------------- python shell example ------------------------- >>> class gaga: ... def nop(self): pass ... def __init__(self): ... self.m = self.nop ... def get(self): ... return self.m ... >>> g= gaga() >>> g <__main__.gaga instance at 7e8a80> >>> g.get() <method gaga.nop of gaga instance at 7e8a80> _______________________________________________________ Grégoire Weber Rigistr. 31 CH-8006 Zürich Switzerland phone: +41-(0)1-361 66 11 mobile: +41-(0)79-44 11 457 mailto:gregoire.weber@switzerland.org Gregi's Handy-Handhabung: http://www.topics.ch/greg/ghh

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ANNOUNCE: Agenda for Python 9 and the Zope Track now online...
by Brian Lloyd 13 Feb '01

13 Feb '01

Hi all - The agenda for Python 9 (and the Zope Track) is now online: http://www1.python9.org/p9-agenda.html Note that online registration for Python 9 closes on Sunday, February 25, 2001. To register, please go to: http://www1.python9.org/p9-reginfo.html We hope to see you there! General information on Python 9 can be found at: http://www.python9.org/ Brian Lloyd brian(a)digicool.com Software Engineer 540.371.6909 Digital Creations www.digicool.com

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Re: [Zope-dev] ProxyPass and SiteAccess getting REMOTE_ADDR
by Ragnar Beer 13 Feb '01

13 Feb '01

Did you read about the via-patch? The address is http://www.zope.org/Members/unfo/apache_zserver_ssl. HTH Raganr >Last week I was setting up an Apache VirtualHost to point to a Zope >object tree using the ProxyPass directive and SiteAccess to get all the >urls right (great stuff!). > >However, I noticed that the REMOTE_ADDR was always set to the >proxy host. This makes sense because Zope just gets the host/port from >the socket connection. But I needed the real remote_addr for logging >and user admin. Adding 'Header's wouldn't pass the info to Zope. > >The Zope mail archives mentioned the problem a couple of times without >a configuration fix. > >A simple fix to the proxy module (in proxy_http.c) will create a new >header called 'Original-Addr' to contain the client's ip address. > >Here is a context diff against Apache 1.3.14 that should work even >in the new 2.0 servers: > >*************** >*** 397,402 **** >--- 397,404 ---- > ap_bvputs(f, reqhdrs[i].key, ": ", reqhdrs[i].val, CRLF, NULL); > } > >+ ap_bvputs(f, "Original-Addr: ", r->connection->remote_ip, CRLF, NULL); >+ > ap_bputs(CRLF, f); > /* send the request data, if any. */ > > >When the request was proxied, the Zope REQUEST will now have a key >'HTTP_ORIGINAL_ADDR' containing the client address. > >This key is also now a good indication that the http request went to >the VirtualHost address. > >I then made a small change to SiteRoot.py to turn off the url mapping if >HTTP_ORIGINAL_ADDR is present. This is a context diff against the >SiteRoot.py file shipped with Zope 2.3.0: > >*************** >*** 108,113 **** >--- 108,116 ---- > if '_SUPPRESS_SITEROOT' in _swallow(request): > request.setVirtualRoot(request.steps) > return >+ # only run if passed through ProxyPass >+ t = request.environ.get('HTTP_ORIGINAL_ADDR',None) >+ if t == None : return > srd = [None, None] > for i in (0, 1): > srp = ('SiteRootBASE', 'SiteRootPATH')[i] > > >These two patches have worked well and solved several problems. I hope >others will find them useful. > >--Bill Noon >Northeast Regional Climate Center >Cornell University > > > >_______________________________________________ >Zope-Dev maillist - Zope-Dev(a)zope.org >http://lists.zope.org/mailman/listinfo/zope-dev >** No cross posts or HTML encoding! ** >(Related lists - > http://lists.zope.org/mailman/listinfo/zope-announce > http://lists.zope.org/mailman/listinfo/zope )

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RE: Printing DTML documents from PythonScripts
by Mayers, Philip J 13 Feb '01

13 Feb '01

Forget it - figured it out (RTFM...): __call__(client=None, REQUEST={}, RESPONSE=None, **kw): So: context.standard_html_header(context,REQUEST) The funny thing is, I answered someone's query the other day by quoting the DTML __call__ syntax. Doh! Regards, Phil +----------------------------------+ | Phil Mayers, Network Support | | Centre for Computing Services | | Imperial College | +----------------------------------+ -----Original Message----- From: Mayers, Philip J Sent: 13 February 2001 12:55 To: 'zope(a)zope.org' Subject: Printing DTML documents from PythonScripts I've got a complex for processing application I'd like to implement in PythonScripts rather than DTML. Ideally, like this:

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Nested dtml-with issue....
by Schmidt, Allen J. 13 Feb '01

13 Feb '01

ROOT /News /Web /2001 (will vary with year) /022001 (will vary with monthyear) /02132001 (will vary with daymonthyear) Inside the News folder is a DTML method which digs down the folder structure to build a single web page with news summaries from the stories contained in the last folder. Using something like this works: <dtml-with News> <dtml-with web> <dtml-with 2001> <dtml-with 022001> <dtml-with 02132001> <dtml-var summaries> (which is a method in the News folder back at the top) </dtml-with> </dtml-with> </dtml-with> </dtml-with> </dtml-with> All this works..... but... Obviously, we don't want to have hard coded dates. What would be the exact syntax to get the string value of the year, then the monthyear then daymonthyear so that referring to the year in the dtml-with would produce the same effect. Have tried MANY variations of date manipulation to get the string value but always wind up with keyerrors when referencing the folder using the new date variable. Thanks very much Allen

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Printing DTML documents from PythonScripts
by Mayers, Philip J 13 Feb '01

13 Feb '01

I've got a complex for processing application I'd like to implement in PythonScripts rather than DTML. Ideally, like this: PythonScript index_html: print context.standard_html_header() # do lots of complex processing if not finished: print context.submission_form() else: context.REQUEST.RESPONSE.redirect('done_html?id='+id) return '' print context.standard_html_footer() return printed *But*, the standard_html_header/footer contain some complex stuff, including a navigation bar and user-configurable stuff. Amongst other errors, I get this: Error Type: KeyError Error Value: BASE1 Clearly, the DTML method has no namespace passed to it, so can't find variables such as BASE1, and other Zope folders/methods. I *have* the REQUEST and context objects in the python script - how do I pass them into the DTML method? Don't tell me to use a DTML method that calls out to a PythonScript please! - I have numerous reasons for not wanting to do this :o) Regards, Phil +----------------------------------+ | Phil Mayers, Network Support | | Centre for Computing Services | | Imperial College | +----------------------------------+

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Re'f. : RE : [Zope] How to force to expand a tree tag
by Francois-regis Chalaoux 13 Feb '01

13 Feb '01

Francois-regis Chalaoux 13/02/2001 12:41 Pour : phil.harris(a)zope.co.uk zope(a)zope.org cc : Objet : RE : [Zope] How to force to expand a tree tag Sorry Phil, it works now. I realize that expand_all = 0 is not possible so I always stayed expand. With collapse_all = 0 I come back to collapse. Good. Bye, FR > No, it does not work, sniff. Well tried. > Even strange cause <a href="&dtml-URL0;?expand_all=1" target="menu">Expand All</a> works !!!!! > FR > Try setting a REQUEST variable like so: > <dtml-call "REQUEST.set('expand_all',_.int(1)"> > before you call your tree tag ----- Original Message ----- From: "Francois-regis Chalaoux" <Francois-regis.Chalaoux(a)sanofi-synthelabo.com> To: <zope(a)zope.org> Sent: Tuesday, February 13, 2001 9:54 AM Subject: [Zope] How to force to expand a tree tag > Hi All, > > How to force to expand a tree tag when you render it ? > expand_all="1" as attribut seems to not work. > > Error: > ==== > Invalid attribute name, "expand_all", for tag <dtml-tree branches="publicObjects" skip_unauthorized="1" expand_all="1" sort=id>, > on line 11 of menu.html > > FR

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