March 1999 - Zope-Dev

Debugging Tip
by Amos Latteier 01 Apr '99

01 Apr '99

Maybe you know this one already but I didn't. Did you know that you can fire up Python and import Zope's Main module to get access to Zope's objects from the comfort of the Python prompt? 1. cd to lib/python, this will make things easier, since you won't have to add lib/python to your sys.path. 2. start Python (if you're using a binary of Zope, you may want to use Zope's copy of Python) 3. import Main 4. The Zope app object is Main.app 5. From there you can get at any Zope object. 6. Some objects may be ghosts and will look empty when you do a dir on them. To load them from the object database, try to access one of their attributes. 7. If you want to make changes to the database don't forget to call get_transaction().commit() to commit your changes. If you really want to mess up your Zope install this will let you do it in style ;-) Of course you wouldn't be considering this unless your broken Product already messed things up, so what do you have to lose? Also, don't forget about the Zope debugger which is a more controlled way to get access to Zope internals. Have fun! -Amos

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NT Service
by htrd90＠zepler.org 31 Mar '99

31 Mar '99

I'm suprised noone could suggest an easy way to run Zope as an NT Service, but this is so useful I thought it would be worth writing. The script below uses the service support from the win32 extensions package, at http://www.python.org/windows, although I have not tested it with the binary distributions. Hopefully this is useful to someone else too, Toby Dickenson ---- port=80 swhome='D:/Progra~1/Zope' python_cmd='d:/progra~1/python/python' import sys import os import win32serviceutil import win32service import time import thread import string sys.path.insert(0, '%s/lib/python' % swhome) sys.path.insert(1, '%s' % swhome) import ZopeHTTPServer from ZPublisher import Client try: access=string.split(open('%s/access'%swhome).read(),':') zope_admin_user_name=string.strip(access[0]) zope_admin_password=string.strip(access[1]) except: zope_admin_user_name="" zope_admin_password="" def run_zope(): args = ['-p', str(port), 'BOBO_DEBUG_MODE=1', '%s/lib/python/Main.py'%swhome ] try: ZopeHTTPServer.main(args) except SystemExit: pass def stop_zope(): url="http://localhost:%d/Control_Panel/manage_shutdown"%port f=Client.Function(url) f.username=zope_admin_user_name f.password=zope_admin_password try: f() except: pass class ZopeService(win32serviceutil.ServiceFramework): _svc_name_ = "OZope" _svc_display_name_ = "Zope" def SvcStop(self): print "Stop request received" self.ReportServiceStatus(win32service.SERVICE_STOP_PENDING) # need make http rpc to zope in a different thread since we need to return from # this stop request sooner than the rpc will complete. This would not # be a problem if ZopeHTTPServer would shutdown the socket when an exception escapes thread.start_new_thread(stop_zope,()) SvcShutdown=SvcStop def SvcDoRun(self): try: sys.stdout=sys.stderr=open("%s/service.log"%swhome,"a",0) except: pass run_zope() print "Service exiting" if __name__=='__main__': win32serviceutil.HandleCommandLine(ZopeService)

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Re: [Zope] Template Printing from Zope
by Brad Clements 30 Mar '99

30 Mar '99

Use the win32com extensions to encapsulate the MS IE HTML control (or browser). Get the control to load the html, then control.Print() On 30 Mar 99, at 12:29, Jason Spisak wrote: Date sent: Tue, 30 Mar 1999 12:29:27 -0500 From: Jason Spisak <webmaster(a)mtear.com> To: zope(a)zope.org Subject: [Zope] Template Printing from Zope > I would like to trigger a DTML document to print after the user creates > it. ( There are a few documents in my project that need to be snail > mailed) Circumstances aside, they aren't allowed to print from > Navigator, so I'd like Zope to shoot it out without the user having to > have a printer configured. If a printer is configured to work with the > server, can Zope send it to lpr? I have zero experience there. :-( > > Any suggestions? > > Jason Spisak > webmaster(a)mtear.com > > _______________________________________________ > 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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RE: [Zope-dev] Object to string
by Shaw, Howard 30 Mar '99

30 Mar '99

WARNING! If you happen to add any item with id 'counter' anywhere between the toplevel folder and where you are this will break. It would be safer to refer explicitly to the toplevel counter object. Try something like this. (Again, I apologise for misreading the intent of Pavlos' code.) >  >  > > Howard C. Shaw III Programmer/SysAdmin St. Thomas High School > ---------- > From: Jason Spisak[SMTP:webmaster@mtear.com] > Sent: Tuesday, March 30, 1999 10:36 AM > To: Shaw, Howard > Subject: Re: [Zope-dev] Object to string > > I got it! > > Quick follow-up > > The id has to be changed with either > 1)another method besides manage_changeProperties, or > <my choice> > 2)given the value of the counter from the start > </my choice> > > I ended up using > >  >  > > Thanks for all the help. > I'll buy you guys all a beer if the boss gives me a raise in my food > stamps $-) > > All the best, > > Jason Spisak > webmaster(a)mtear.com > > > Shaw, Howard wrote: > > > > Nope. Nothing wrong here. Just wrap the two instances of unique_id > in > > quotes. Sorry for not catching that in Pavlos' code. > > > > like so: > > >  > > the fields are id and title, and both take a string. The traceback > was > > telling you that it could not find the object unique_id which it was > > trying to evaluate to generate a string to pass. > > > > Howard C. Shaw III > > Programmer/SysAdmin > > St. Thomas High School > > > -- > Jason Spisak > webmaster(a)mtear.com >

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RE: [Zope-dev] Object to string
by Shaw, Howard 30 Mar '99

30 Mar '99

Ok, maybe I was misunderstanding what Pavlos' code was intended to do (probably because I didn't read it, just glanced at it)... try this... >  >  > (The 'PARENTS[0]' should be unnecessary. What I had suggested was PARENTS[-1] as an alternative method of globalizing the unique ids. That is, with PARENTS[-1] the same code could be used in five different directories, and each id would be unique in the flat namespace inclusive of all five. This would look like: >  >  > Howard C. Shaw III Programmer/SysAdmin St. Thomas High School > ---------- > From: Jason Spisak[SMTP:webmaster@mtear.com] > Sent: Tuesday, March 30, 1999 10:28 AM > To: Shaw, Howard; zope-dev(a)zope.org > Subject: Re: [Zope-dev] Object to string > > Shaw, > > We're close, but the id string doesn't update. > It stays 'unique_id' instead of becoming the counter string. > I used this code: > >  >  >  > > Thanks again for all your help, time, and extra brain cycles! > > Shaw, Howard wrote: > > > > Nope. Nothing wrong here. Just wrap the two instances of unique_id > in > > quotes. Sorry for not catching that in Pavlos' code. > > > > like so: > > >  > > the fields are id and title, and both take a string. The traceback > was > > telling you that it could not find the object unique_id which it was > > trying to evaluate to generate a string to pass. > > > > Howard C. Shaw III > > Programmer/SysAdmin > > St. Thomas High School > > > -- > Jason Spisak > webmaster(a)mtear.com >

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RE: [Zope-dev] Object to string
by Shaw, Howard 30 Mar '99

30 Mar '99

Nope. Nothing wrong here. Just wrap the two instances of unique_id in quotes. Sorry for not catching that in Pavlos' code. like so: >  the fields are id and title, and both take a string. The traceback was telling you that it could not find the object unique_id which it was trying to evaluate to generate a string to pass. Howard C. Shaw III Programmer/SysAdmin St. Thomas High School > ---------- > From: Jason Spisak[SMTP:webmaster@mtear.com] > Sent: Tuesday, March 30, 1999 9:02 AM > To: Shaw, Howard; zope-dev(a)zope.org > Subject: Re: [Zope-dev] Object to string > > Maybe their's something wrong with my Zope, but I can't get the > manage_addFolder to work by itself, let alone with properties from a > root folder. Odd. It try this code: > >  > > This should create a folder at that level of the hirearchy with id of > 'unique_id', but instead I get this traceback-- > > > ) > > > Can I not give the name 'unique_id' to a new folder? > > Jason Spisak > webmaster(a)mtear.com > > Shaw, Howard wrote: > > > > Sorry, guess I wasn't clear enough. What I am thinking should work > is > > ... > > > >  > >  > >  > > > > Howard C. Shaw III > > Programmer/SysAdmin > > St. Thomas High School > > _______________________________________________ > Zope-Dev maillist - Zope-Dev(a)zope.org > http://www.zope.org/mailman/listinfo/zope-dev > > (For non-developer, user-level issues, use the companion list, > zope(a)zope.org, http://www.zope.org/mailman/listinfo/zope ) >

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Re: [Zope-dev] Object to string
by Jason Spisak 30 Mar '99

30 Mar '99

Maybe their's something wrong with my Zope, but I can't get the manage_addFolder to work by itself, let alone with properties from a root folder. Odd. It try this code:  This should create a folder at that level of the hirearchy with id of 'unique_id', but instead I get this traceback-- ) Can I not give the name 'unique_id' to a new folder? Jason Spisak webmaster(a)mtear.com Shaw, Howard wrote: > > Sorry, guess I wasn't clear enough. What I am thinking should work is > ... > >  >  >  > > Howard C. Shaw III > Programmer/SysAdmin > St. Thomas High School

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Re: [Zope-dev] Object to string
by Jason Spisak 30 Mar '99

30 Mar '99

Damn it didn't work. I if I post again on this subject I get a free set of steak knives. ;-) I tried appending PARENTS[-1]. to the counter property to tell it that the counter property I want is a property of the root folder. But when I try to save the changes to the DTML, it chokes. Here's the code and the traceback:    The counter property is type:int and set to 0.  Unpack sequence of wrong size? Hmm, any suggestions? All the best, Jason Spisak webmaster(a)mtear.com Shaw, Howard wrote: > > Actually, he's talking about simple folder property manipulation (ok, > its not so simple), the Counter product is intended for visible counters > incremented by webpage access. > > However, if a Counter is added to the folder as 'countob', and marked to > NOT check ips, then it can be handled thusly... (or should be able to, > anyhow.) > >  >  > > The parameter on the first line is normally '_', and can be passed in if > you like. Not passing it in when the countob is marked to check ips will > generate a traceback. > > The only real reason I can think of for using a Counter object instead > of the folder properties is to be able to use acquisition to make the > names globally unique; but the same thing can be done by prepending > PARENTS[-1]. to Pavlos' technique. > > Also, if you use the counter object, you will have to set the "How many > hits before saving to the database?" line to 0. > > Pavlos' method was not recently added, but has been usable for a > considerable period of time, and has the added advantage of not needing > a Product added to support it. > > Howard C. Shaw III > Programmer/SysAdmin > St. Thomas High School > > > ---------- > > From: Jason Spisak[SMTP:webmaster@mtear.com] > > Sent: Monday, March 29, 1999 6:12 PM > > To: Pavlos Christoforou; zope-dev(a)zope.org > > Subject: Re: [Zope-dev] Object to string > > > > Pavlos: > > > > I had forgotten about the recent addition of the counter object to our > > arsenal of Zopeist tools. Shame on me. Thanks for the heads-up! > > > > Jason Spisak > > webmaster(a)mtear.com > > > > > > > > On Mon, 29 Mar 1999, Jason Spisak wrote: > > > > > > > Oh, to follow up on my last post about turning an object to a > > string > > > > without leaving DTML, I have tried: > > > > > > > >  > > > >  > > > > > > > > All help welcome! > > > > > >  will return a string representation > > of > > > the object. > > > > > > Alternatively you can generate unique object ids by adding a counter > > > property to your containing folder (or root folder) and modify it > > > everytime you generate a new object. For instance:: > > > > > >  > > >  > > >  > > > > > > Pavlos > > > > -- > > Jason Spisak > > webmaster(a)mtear.com > > > > _______________________________________________ > > Zope-Dev maillist - Zope-Dev(a)zope.org > > http://www.zope.org/mailman/listinfo/zope-dev > > > > (For non-developer, user-level issues, use the companion list, > > zope(a)zope.org, http://www.zope.org/mailman/listinfo/zope ) > > -- Jason Spisak webmaster(a)mtear.com

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Re: [Zope-dev] Object to string
by Jason Spisak 30 Mar '99

30 Mar '99

Thanks to everybody for thier responses! I'm giong to use a combination of Howard and Pavlos's suggestions. Zopistas Unite! Jason Spisak webmaster(a)mtear.com

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Object to string
by Jason Spisak 30 Mar '99

30 Mar '99

Oh, to follow up on my last post about turning an object to a string without leaving DTML, I have tried:   All help welcome! Jason Spisak webmaster(a)mtear.com

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