January 2001 - Zope - Zope lists

Unique ID generation
by Tim Moore 26 Jan '01

26 Jan '01

I'm writing a simple ZClass (and a second ZClass which contains the first) and I would like the constructor for this class to be able to auto-generate unique IDs for the instances rather than making the owner choose one. What I've tried isn't working, but I don't really know what I'm doing here...I figure this must be a fairly common problem, so what is the best way to handle it? The ID needs only be unique within its container object (i.e., doesn't have to be globally unique). I have full control over the container class, so solutions involving setting properties on that class are OK. TIA, -- Tim Moore

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Re: [Zope] Login Manager
by dan＠sol.control.com 25 Jan '01

25 Jan '01

"Nick McDowell" <nmcdowell(a)quris.com> writes: > Hi, > > I have installed Login Manager utilizing skinscripts as per Dan Pierson's > article @ http://www.zope.org/Members/dlpierson/sqlLogin and everything > works fine. I would love to customize it to tailor my needs and was > wondering if anyone new of in-depth documentation detailing LoginManager. > > For example, I can't find the code that is inserting the datetime stamps > into the database table "member_statistics". I think it must be in the > Login Manager product and have been code trawling with no success. You can't find it because it doesn't exist :-) The datetime stamps are part of the PTK membership system and were left in that tutorial rather thoughtlessly. I've been trying to make them work lately and having a bit of trouble getting Postgresql and Zope to agree on timestamp formats... The current PTK updates them in the DTML method "logged_in", which is the action for the PTK DTML method "login_form" (it may also update them elsewhere). Dan Pierson

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RE: [Zope] How to prevent the user from going
by Farrell, Troy 25 Jan '01

25 Jan '01

Netscape and Mozilla create make new HTTP requests when a user asks to view source or print. This drives me nuts. I want to see source of the page I'm looking at. If there are any Moz or NS people on the list, please enlighten us to the reasoning behind this behavior. Troy -----Original Message----- From: rlanham(a)speakeasy.net [mailto:rlanham@speakeasy.net] Sent: Thursday, January 25, 2001 3:51 PM To: zope(a)zope.org Subject: Re: [Zope] How to prevent the user from going These lines, at least as group, ought only be used on process only pages. Never on page that an application stops on and renders to a browser. In addition to these lines, I always make it a practice to do DB or file system processes on a page that I post to, that includes the lines below, and when done, redirect with querystring variables to the calling page. This way the user can click refresh and back all day and you won't get dupes or constraint errors, etc. > ------------ Original Message ----------- > From: Oliver Bleutgen <myzope(a)gmx.net> > Date: Thu, 25 Jan 2001 21:11:43 +0100 > > > I use this on asp pages, you will have to modify for zope syntax, but it > > works > > very well for your need: > > > Response.buffer = true > > Response.Expires = -1 > > Response.AddHeader "Pragma", "no-cache" > > Response.AddHeader "cache-control", "no-store" > > IIRC there's one catch though, It may be stopping netscape > from being able to print the page. The silly thing then just prints > "this page is expired from cache". > > cheers, > oliver > > > _______________________________________________ Zope maillist - Zope(a)zope.org http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )

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Login Manager
by Nick McDowell 25 Jan '01

25 Jan '01

Hi, I have installed Login Manager utilizing skinscripts as per Dan Pierson's article @ http://www.zope.org/Members/dlpierson/sqlLogin and everything works fine. I would love to customize it to tailor my needs and was wondering if anyone new of in-depth documentation detailing LoginManager. For example, I can't find the code that is inserting the datetime stamps into the database table "member_statistics". I think it must be in the Login Manager product and have been code trawling with no success. Cheers Nick

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url_quote written differently
by peter bengtson 25 Jan '01

25 Jan '01

1a) <dtml-var id> is one way of writing it. 2a) <dtml-var "'text %s text'%id"> is another way of writing it 1b) <dtml-var id url_quote> is a second way of writing it 2b) ????? How do I do this one?? I have tried this, but that didn't work: <dtml-var "'text %s text'%id.url_quote()"> , but that didn't work either. What's the syntax? Anybody? Cheers, Peter

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RE: [Zope] Instatiate object instances :-)
by Tom Jenkins 25 Jan '01

25 Jan '01

> -----Original Message----- > From: Aleksander Salwa [mailto:ololo@zeus.polsl.gliwice.pl] > Sent: Thursday, January 25, 2001 4:25 PM > To: zope(a)zope.org > Subject: Re: [Zope] Instatiate object instances :-) > > > Paths can be treated as "pointers", so methods > getPhysicalPath/(un)restrictedTraverse may be what you need. > Right, the getPhysicalPath method definately works... although I've only used the unrestrictedTraverse in python classes. I haven't delved too deeply in how to use the tuple returned by getPhysicalPath in DTML. -------------------------------------------- Tom Jenkins |<xml>Its devIS - Development InfoStructure |all you 703.525.6485 tjenkins(a)devis.com |need it http://www.devis.com |to be</xml>

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Re: [Zope] How to prevent the user from going
by rlanham＠speakeasy.net 25 Jan '01

25 Jan '01

These lines, at least as group, ought only be used on process only pages. Never on page that an application stops on and renders to a browser. In addition to these lines, I always make it a practice to do DB or file system processes on a page that I post to, that includes the lines below, and when done, redirect with querystring variables to the calling page. This way the user can click refresh and back all day and you won't get dupes or constraint errors, etc. > ------------ Original Message ----------- > From: Oliver Bleutgen <myzope(a)gmx.net> > Date: Thu, 25 Jan 2001 21:11:43 +0100 > > > I use this on asp pages, you will have to modify for zope syntax, but it > > works > > very well for your need: > > > Response.buffer = true > > Response.Expires = -1 > > Response.AddHeader "Pragma", "no-cache" > > Response.AddHeader "cache-control", "no-store" > > IIRC there's one catch though, It may be stopping netscape > from being able to print the page. The silly thing then just prints > "this page is expired from cache". > > cheers, > oliver > > >

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Instatiate object instances :-)
by Mario Valente 25 Jan '01

25 Jan '01

Hi: Can someone give any info/tips on the best way to solve this ? We have a folder "/content" containing all the diferent type of content we have available on our site. Within this folder, for example, we have a subfolder "/content/polls" where we store all the polls (instances of a Poll product). Another example, we have a subfolder "/content/articles" where we instantiate Squishdot articles. Now, the problem is that we'd like to reference those objects in several and different parts of the site. For example, we'd like to be able to reference diferent polls and diferent articles on area/folder "/Money"; and diferent polls and diferent articles on "/Games"; but an article could be referenced in "/Lifestyle" and in "/Money" We havent found an elegant OO solution. Up until now the only thing that comes to mind is that we should instatiate copies for the same object within each area/folder. This is a problem (duplicate copies, lack of data integrity, etc) The obvious solution in a non-OO paradigm would be links/pointers. But it is, of course, non-OO. And you cant do that on Zope anyway (can you?). The subject of this message is also another hypothesis: each object in Zope has a reference (the "Object Instance at #hiusd9743" messages...). Is it possible to instantiate object instances :-) ? This would be, of course, pointers. Any other options ? Is this a problem in our OO design (probable) ? How would you (suggest we) do it ? Any help/suggestions are welcome. C U! -- Mario Valente

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Meaning of error?
by Steven Grimes 25 Jan '01

25 Jan '01

I'm trying to write a report for a system and When I try to view my document by clicking on the view tab at the top of the management screen I receive the following error: ! Temporarily Unavailable The resource you requested is temporarily unavailable - please try again later. (107) bad stdout strlen (0) The document calls three different queries which return a large amount of data. As far as I know the execution time on the page does not exceed the server timout setting because sometimes the page works and sometime it doesn't. Any help on what this error message means would be greatly appreciated. Thanks, Steven Grimes Database Engineer sgrimes(a)atinucleus.com Accelerated Technology, Inc. 720 Oak Circle Drive East Mobile, AL 36609 TEL: 334-661-5770 FAX: 334-661-5788 www.acceleratedtechnology.com ------------------------------------------------------------ "Nucleus. All You NEED in an RTOS. Royalty Free." ------------------------------------------------------------

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Problem instantiating ZClass
by Åsmund Hjulstad 25 Jan '01

25 Jan '01

There appears to be something wrong... My config: Zope from CVS (2001-01-23, 16:15GMT) Python 2.0 (yes, I know it is not supported) I did the following: In Control Panel, generate new product. In the new product, Added new class (filled in the blanks). In the root folder: Add, select the new class, entered ID, and then... Error Type: AttributeError Error Value: _setId I have reproduced it several times, with several different CVS-versions. Traceback (innermost last): File /home/ahj/polar/zope/Zope2/lib/python/ZPublisher/Publish.py, line 222, in publish_module File /home/ahj/polar/zope/Zope2/lib/python/ZPublisher/Publish.py, line 187, in publish File /home/ahj/polar/zope/Zope2/lib/python/Zope/__init__.py, line 221, in zpublisher_exception_hook (Object: RoleManager) File /home/ahj/polar/zope/Zope2/lib/python/ZPublisher/Publish.py, line 171, in publish File /home/ahj/polar/zope/Zope2/lib/python/ZPublisher/mapply.py, line 160, in mapply (Object: CDClass_add) File /home/ahj/polar/zope/Zope2/lib/python/ZPublisher/Publish.py, line 112, in call_object (Object: CDClass_add) File /home/ahj/polar/zope/Zope2/lib/python/OFS/DTMLMethod.py, line 189, in __call__ (Object: CDClass_add) File /home/ahj/polar/zope/Zope2/lib/python/DocumentTemplate/DT_String.py, line 538, in __call__ (Object: CDClass_add) File /home/ahj/polar/zope/Zope2/lib/python/DocumentTemplate/DT_With.py, line 133, in render (Object: CDClass.createInObjectManager(REQUEST['id'], REQUEST)) File /home/ahj/polar/zope/Zope2/lib/python/DocumentTemplate/DT_Util.py, line 334, in eval (Object: CDClass.createInObjectManager(REQUEST['id'], REQUEST)) (Info: CDClass) File <string>, line 0, in ? File /home/ahj/polar/zope/Zope2/lib/python/ZClasses/ZClass.py, line 522, in createInObjectManager (Object: CDClass) AttributeError: (see above)

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