March 2001 - Zope - Zope lists

dtml-with this only broken?
by Ron Bickers 23 Mar '01

23 Mar '01

It seems that <dtml-with "this()" only> doesn't do what one would expect. My 'description' is still being acquired. I found in the mailing list that I can use something like <dtml-if "_.hasattr(aq_explicit, 'description')">, but why doesn't the with only work? _______________________ Ron Bickers Logic Etc, Inc. rbickers(a)logicetc.com

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newbie: publishing/product relationship?
by Peter J. MASON 23 Mar '01

23 Mar '01

Following one of the howto's (September Update 2000 update of the Python Product ...", I've created an object which I think is "publishable". The article says it is but doesn't say how to do so (ie publish it). Instead it goes on to explain how you turn it into a "product", so to be managed by the Zope management interface. It seems that a "product" allows you to define a generic such product which the management interface allows others to create instances of. The example has one entering id, title, questions, etc. Is this a fair statement? In my case I don't want that property since the only instances I wish to admit will be ones defined in a (private) database. If you like, I'm seeking an RPC mechanism and wish to invoke methods on such instances only. Is "creating a product" what I really want to do, or can I stop short at at "publishing"? In the publish only case, what form of URL would people use to get at those methods? Admittedly one method will be a "create/add" but that is to create another entry in my private, non-Zope "database". Perhaps an [substitute favourite commercial database]-SQL type example might be similar if there is an example to refer to? -- Peter J. MASON, Principal Software Engineer Retriever Communications Pty Ltd Ph: +61-2-9006 8600 Fax: +61-2-9006 8605 Email: peter.mason(a)retriever.com.au Web: www.retriever.com.au

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Permissions on ZClass
by Darin Lee 23 Mar '01

23 Mar '01

Zopistas, I have a custom set of ZClasses all living together in a product I have created (a news folder where authors can post articles and photographs) but something strange is happening with authentication. If an author logs in to the Zope site root and selects my News folderish object for editing purposes, I can determine the AUTHENTICATED_USER variable and all is well. Like so -- http://my.zope.site/manage However, If the author comes into my ZClass directly, the AUTHENTICATED_USER variable still reports that they are anonymous - even though they are authorized and able to access (however you can see their user name in the left frame). Like so -- http://my.zope.site/news/manage If they visit the site root and re-visit the news folderish object then AUTHENTICATED_USER is set properly and all is well. I need it to work becuase I'm using AUTHENTICATED_USER to determine who is writing the articles and binding that information to another ZClass which contains a photograph, biography information and other tidbits of info. I'm having some difficulty grokking Zope Permissions, so if anyone has any thoughts, I would greatly appreciate it! (I did read the permissions chapter in the ZB - but the mappings in ZClasses are still reeeeaaalllly fuzzi to me). My understanding was that AUTHENTICATED_USER should be set by the closest acl_users folder up the tree. Thanks in advance, -Darin

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RE: How slow should dtml-var be? (was: RE: [Zope] Problems with *BIG* SQL queries)
by Alan Capesius 23 Mar '01

23 Mar '01

As am I As you can see from the code example I posted earlier, the HTML table is broken down into sub-tables which render very quickly (at least under Netscape) compared to a huge table with the same data. The code was: <dtml-var standard_html_header> <dtml-var "ZopeTime()"> <dtml-call "REQUEST.set('count', 0)"> <TABLE> <dtml-in allorders> <dtml-call "REQUEST.set('count', count+1)"> <dtml-if "count>100"> </TABLE><TABLE> <dtml-call "REQUEST.set('count', 0)"> </dtml-if> <TR><TD><dtml-var itemno></TD><TD><dtml-var desc></TD><TD><dtml-var datelastmn></TD></TR> </dtml-in> </TABLE> <dtml-var "ZopeTime()"> <dtml-var standard_html_footer> > > > ---------- > > From: Bill Anderson[SMTP:BILL@LIBC.ORG] > > Sent: Thursday, March 22, 2001 9:15:06 PM > > To: Capesius," Alan > > Cc: zope(a)zope.org > > Subject: RE: How slow should dtml-var be? (was: RE: [Zope] > Problems with * BIG* SQL queries) > > Auto forwarded by a Rule > > > On 21 Mar 2001 13:18:38 -0600, Capesius, Alan wrote: > > Let's clarify that here...large tables not lots of tables. > > As I showed in my earlier messages in the *BIG* thread, a large > table (31000 > > records) may take 15 minutes+ to render whereas the same data > parsed into > > 300 tables renders very quickly (seconds). > > > i believe Andy is referring to _HTML_ tables, not SQL tables ... > > > >>>rendered, for example lots of tables on Netscape. Your > > >>>example includes no > > >>>HTML so thats just an off the wall comment. > > > Bill > > >

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RE: How slow should dtml-var be? (was: RE: [Zope] Problems with * BIG* SQL queries)
by Capesius, Alan 23 Mar '01

23 Mar '01

Let's clarify that here...large tables not lots of tables. As I showed in my earlier messages in the *BIG* thread, a large table (31000 records) may take 15 minutes+ to render whereas the same data parsed into 300 tables renders very quickly (seconds). >>>-----Original Message----- >>>From: Andy McKay [mailto:andym@ActiveState.com] >>>Sent: Wednesday, March 21, 2001 12:17 PM >>>To: Mayers, Philip J; 'Capesius, Alan'; zope(a)zope.org >>>Subject: Re: How slow should dtml-var be? (was: RE: [Zope] >>>Problems with >>>*BIG* SQL queries) >>> >>> >>>Yup sounds like its too much data, one thing that can vary >>>of course is >>>rendering on the browser, large pages can take a long time just to be >>>rendered, for example lots of tables on Netscape. Your >>>example includes no >>>HTML so thats just an off the wall comment. >>>-- >>> Andy McKay. >>>

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Re: Zope digest, Vol 1 #1270 - 14 msgs
by Itai Tavor 23 Mar '01

23 Mar '01

Thank you, Brian. Finally, after too many pointless discussions and a lot of wasted time dealing with patches, we have a positive response from DC. I wonder where you guys were last month when we had the same discussion. Back then all we got from DC was a very loud silence. But that's behind us now. Annoyed no longer, Itai Brian Lloyd wrote: > > In the last year I have seen many people complaining about this with DC >> doing anything about it. >> Makes you think! > >That's not quite true - there have been several discussions of >this in the past, and we have not ignored it. There were (and >still are - more below) concerns about namespace pollution and >stomping on variables that people may have currently defined >in applications. Some alternatives have been proposed, though >so far none have been implemented: > >http://www.zope.org/Members/4am/DTMLWiki/NamedDTMLInLoop > >http://dev.zope.org/Wikis/DevSite/Proposals/DTMLExpressionSyntax > > >> DC are pretty skilled py-engineers. If they don't want to use >> sequence-item, >> then with what reason?? >> So, DC, people what's so cool about sequence-item that you can't get with >> sequence_item?? What's the underlying reasoning here? > >Largely a concern that the DTML namespace is too much like the >wild west already, and that the changed names could break apps >that have already defined "sequence_item" or similar names, >either for their own simplification or for totally other purposes. > >That said, I think that this has come up enough recently, clearly >has support, and provides enough of a simplification win that it >should go on the plan for Zope 2.4. > >For those wondering "why not 2.3.1?", 2.3.1 is a bug-fix release, >and this will be a feature with a non-trivial documentation impact. >For more info see the Zope release policy: > >http://dev.zope.org/Resources/ZopeReleasePolicy.html > >Putting it in the next feature release will allow us to make sure >the documentation is updated accordingly, and give people who may >be stepped on by the namespace change a chance to assess their apps >before upgrading. > >People who need the change "Right Now" can continue to use the patch - >in fact I'd encourage people to so we can shake out any problems. We >should also make a project area on dev.zope.org so that we can have >a common area to plan what still needs to be done (it sounds like the >patch is close, but not 100%) and what collateral activities need to >be done (what documentation artifacts need to be updated, etc.) > >The 2.4 release will be largely about getting Zope on Python 2.1 and >I am intentionally keeping the 2.4 plan relatively small so that we >can get it out in Q2. I've added the DTML namespace changes to the >plan at: > >http://dev.zope.org/Resources/zope_240_plan.html > >I'll need one person to volunteer to be the point man on this, to >coordinate with me on integration and keep the project area up >to date. > > >Brian Lloyd brian(a)digicool.com >Software Engineer 540.371.6909 >Digital Creations www.digicool.com -- -- Itai Tavor -- "Je sautille, donc je suis." -- itai(a)optusnet.com.au -- - Kermit the Frog -- -- -- -- "If you haven't got your health, you haven't got anything" --

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Re: [Support] [ZOPE Collector] Zope Question entry: Problems using Internet Explorer 5.5 as client brow
by Chris McDonough 22 Mar '01

22 Mar '01

> get_data is a ZSQL method that selects some data from > a PostgreSQL database table and has a "brain" to help > format some of the columns. > > OK, this starts to help, so if I set a new key in > the REQUEST object I'm forcing a write to the ZODB, > correct? No... REQUEST is a transient per-thread object that isn't stored in the ZODB. > I do not use any "manage" methods to add Zope objects at > all. In my application the user does not create any new > Zope objects whatsoever. The only data saved is to the > the PostgreSQL database. There are Python objects created > within external methods but their scope is local to the > methods they are used in. On top of this there are no Are you sure? I'd check those external methods over and over again. If something assigns something to self, or any other persistent object in the EM, e.g. "self.foo = ' bar'", it does a ZODB write at commit time. > session management issues: all pages contain their state > using hidden form elements and communicate required state > via parameters on the request URL. So in my case I really do > not think that there is a need to write to the ZODB. I'd like > to be able to freeze the ZODB for the production version. Is > it possible to turn off all these implicit writes somehow > without breaking the whole framework? There is an option to FileStorage which makes it read-only, but using it requires the addition of a custom_zodb.py file in your Zope dir or Zope source changes. I don't think this is necessary. > I know this may not be the intended usage that Zope was > designed for but the framework is so powerful even > without the distributed content management capabilities > that I'm sure there must be a safe way to use it in the > above manner (i.e. as a straightforward web application > server against a backend SQL database) Sure... > > -----Original Message----- > From: Chris McDonough [mailto:chrism@digicool.com] > Sent: Thursday, March 22, 2001 12:29 PM > To: Egilmez, Kaan > Cc: zope(a)zope.org > Subject: Re: [Support] [ZOPE Collector] Zope Question entry: Problems > using Internet Explorer 5.5 as client brow > > > > Thanks for responding so quickly: > > No problem! > > > (1) I don't think I'm writing to the ZODB explicitly, the DTML > > documents, that generate this error, call a number of ZSQL methods > > that read (no inserts or updates are involved) data which is > > then presented in tables. I'm not sure why the transaction > > mechanism is involved with database reads, although I do see > > an increase in the Data.fs file size so something is being > > written. Maybe you could point me to some info that explains > > when and why writes occur to the ZODB. This behavior has never > > A write occurs any time __setattr__ is called on an object instance, or if > an attribute is set on an object named _p_changed and it's set to 1 (e.g. > self._p_changed = 1). You can't use __setattr__ directly from DTML, but if > the DTML method calls an external method or a method of an object built-in > to Zope, any of these things can write to the ZODB directly. In practice, > this generally occurs when adding DTML documents > (manage_addDTMLDocument(...)), DTML Methods (manage_addDTMLMethod(...)), > Folders, custom object instances, etc. from DTML. > > > occurred on the localhost connection where I'm using Netscape > > as the client browser, nor has it ever occurred on a remote > > connection when the browser was other than IE 5.5. I'm using > > This is very odd. I have no explanation for this. > > > ZPoPyDA to connect to PostgreSQL. The only other interesting > > thing I'm doing is to set certain variables in the REQUEST based > > upon each row coming back from the query. These variables are > > then used to modify the layout for that row: > > > > <dtml-in get_data> > > <dtml-if some_criteria> > > <dtml-call "REQUEST.set(row_prop,'style1')"> > > <dtml-else> > > <dtml-call "REQUEST.set(row_prop,'style2')"> > > </dtml-if> > > <tr> > > <td class="&dtml-row_prop;"><dtml-var first_col></td> > > ... > > <td class="style3"><dtml-var last_col></td> > > </tr> > > </dtml-in> > > What does get_data do? The behavior of any dtml-call, dtml-in, dtml-var, > etc. can cause writes based on the method they're calling, iterating over, > rendering, etc. If your ZODB is growing, something is getting added. > > > (2) I get the same behavior when I serve through Apache. > > (not using ZServer behind Apache, just the generated form > > served directly through Apache) > > Sorry, I don't know the answer to this one... it's evidently a bug in IE > 5.5. > >

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DocumentTemplate and ZPublisher
by Eric BARROCA 22 Mar '01

22 Mar '01

Hello, I'd like to use only DocumentTemplate and ZPublisher in a python software (to help publishing modules), in order to avoid having the whole Zope to launch just to use its modules publishing and HTML document templates capabilities. Anyone have yet tried that ? Is there a solution ? Thanks, EB. -- Éric BARROCA <eric(a)barroca.net> No to Software Patents : <http://petition.eurolinux.org>

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ZSQL Advice needed - no results, one match, multiple matches
by sdduncan＠indiana.edu 22 Mar '01

22 Mar '01

I would like to query a mysql database for a persons ID number for further processing. I have them enter their Last Name into a form (actually they can enter the first few letters of their name and I use the like operator). Please enter your last name _______ [submit] If there are no matches I want to print out that fact IF there is one match I want to display the results of an sql query based on the personID If there is more than one match I want to bring up a selection box so they can select the correct name and than get the results from that personID What I tried was using sequence-length like: <dtml-if "_[sequence-length']==1"> Display information about the Person <dtml-if "_['sequence-length'] > 1"> Put up a selection box <dtml-else> Sorry we did not find a match in our database </dtml-if> But this approach does not work. <dtml-else> is never seen. When I have done this before (using PHP) I could check on the results from $num = mysql_num_rows($queryHandle) I get the feeling I am pounding away with my php hammer when there is a better zope nail out there. What would be the Zope way to do this? -Shan

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Re: [Zope] Install Apache Problem
by Chris McDonough 22 Mar '01

22 Mar '01

That's a good question... ;-) You can change it using the zpasswd utility in the Zope directory, ala: python zpasswd.py --user=admin --password=123 inituser ----- Original Message ----- From: "Glenn Emery" <gemery(a)uswest.net> To: "Chris McDonough" <chrism(a)digicool.com> Sent: Thursday, March 22, 2001 3:40 PM Subject: Re: [Zope] Install Apache Problem > Darn....I've got it working now (seemed to have fixed itself) and now I > cannot find any mention of the default user name and password...hehehe... > > > ----- Original Message ----- > From: "Chris McDonough" <chrism(a)digicool.com> > To: "Glenn Emery" <gemery(a)uswest.net> > Cc: <zope(a)zope.org> > Sent: Thursday, March 22, 2001 2:11 PM > Subject: Re: [Zope] Install Apache Problem > > > > This must be a product of how it was configured... we don't distribute the > > RPM install, so I'm not sure how it's set up. > > > > ----- Original Message ----- > > From: "Glenn Emery" <gemery(a)uswest.net> > > To: "Chris McDonough" <chrism(a)digicool.com> > > Sent: Thursday, March 22, 2001 3:19 PM > > Subject: Re: [Zope] Install Apache Problem > > > > > > > Hi Chris, > > > > > > I was going to http://www.ssatech.com > > > > > > I found Zope at https://www.ssatech.com any reason why it inherited > SSL? > > > > > > Thanks! > > > > > > Glenn > > > ----- Original Message ----- > > > From: "Chris McDonough" <chrism(a)digicool.com> > > > To: "Glenn Emery" <gemery(a)uswest.net>; <zope(a)zope.org> > > > Sent: Thursday, March 22, 2001 1:48 PM > > > Subject: Re: [Zope] Install Apache Problem > > > > > > > > > > Hi Glenn, > > > > > > > > This is the standard error message raised when an action can't be > > > completed > > > > due to a missing or incorrect component somewhere in your URL. > > > > > > > > What URL are you visiting? > > > > > > > > ----- Original Message ----- > > > > From: "Glenn Emery" <gemery(a)uswest.net> > > > > To: <zope(a)zope.org> > > > > Sent: Thursday, March 22, 2001 3:08 PM > > > > Subject: [Zope] Install Apache Problem > > > > > > > > > > > > > Good Day, > > > > > > > > > > I have recently installed Zope-2.3.0-1.i386.rpm and > > > > > Zope-pcgi-2.3.0-1.i386.rpm on RedHat 7 with Apache 1.3.12 and have a > > > > problem > > > > > with reaching my server and get an > > > > > "Zope Error > > > > > Zope has encountered an error while publishing this resource. > > > > > Resource not found > > > > > Sorry, the requested Zope resource does not exist. > > > > > Check the URL and try again. > > > > > > > > > > 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." > > > > > > > > > > I'm trying to find what is causing this but there is no entry in my > > log > > > > > file.....Please help? > > > > > > > > > > Thank You, > > > > > > > > > > Glenn Emery > > > > > > > > > > > > > > > _______________________________________________ > > > > > 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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