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checking for existing object in dtml (localFS)
by Andreas Elvers 02 Apr '00

02 Apr '00

Hi, I'm right now in the phase of gaining some zope enlightenment. Here we go :-) Problem: From an SQL query I get some info stuff and the filename of a picture. This picture may be inside the /images Folder. Now I want to give a summary of the data with the picture when existing. First solution: (found this one here in the mailinglist) > <dtml-if "_.hasattr(images, image_name)"> # if it exists > <dtml-var "_.getattr(images, image_name)"></a> # display it > <dtml-else> # otherwise > Some other thing to do (I used a text link) > </dtml-if> This works fine with a normal zope folder object. My images reside on the local filesystem and are mounted via the supercool LocalFS product. But... the above code didn't work for me. hasattr always returned 'false' for any file inside the localfs Folder. I came up with the following solution (this works for me):  picture: <IMG SRC="/images/">  (From this point on I began to experiment.) Fine. Now I thought about doing the IMG part in the zope way. Thus I have to use objectValue instead of objectIds... Let's see:  picture:   Nope... This will not work with LocalFS. Let's test this one on a normal zope folder:  picture:   no way. It's not working... This one is working for a normal Zope Folder:  picture:   This will give me all images in the folder... But I only want to test for one picture. Anyway... Let's test the last example with LocalFS ! It's not working. I'm a bit confused. To summarize: - I can not use _.hasattr(folder,'nameofimg.gif') to test for the existence of an image within localFS folder. But it works for normal Zope folders. - folder.objectIds(['Image']) won't return a list of IDs of images within a LocalFS folder. But it does in a normal Folder. - within LocalFS folder.objectIds(['someimage.gif']) will return a list with only 'someimage.gif' within it. But folder.objectValues(['someimage.gif']) will not return a list with the file object. - further folder.objectIds(['someimage.gif']) won't work inside normal Zope folder objects but will work inside LocalFS folders. I would be glad to have some testing method that will work on both types of folder. And easy. And small. And dtml :-) Greetings - Andreas -------------------------------------------------------------------------- i s t i m e l o n g ? o r i s i t w i d e ?

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newbie q: starting zope problem: "Computing default hostname"
by Frank Emser 02 Apr '00

02 Apr '00

Hello, I just got zope up and running in a "simple" configuration with zserver.. My problem is that the http-part of Zserver somehow does not recognise the hostname. Sadly, it replaces it with "localhost.localdomain" (instead of using the IP-address), which of course will break any links when called from a remote host. Oddly enough, the ftp-part has absolutely no problem in finding it. See below: ------ 2000-04-02T09:22:53 PROBLEM(100) ZServer Computing default hostname ------ 2000-04-02T09:22:53 INFO(0) ZServer Medusa (V1.13.4.1) started at Sun Apr 2 11:22:53 2000 Hostname: localhost.localdomain [HERE, STARTING HTTP-SERVER, HOSTNAME IS UNKNOWN] Port:8080 ------ 2000-04-02T09:22:53 INFO(0) ZServer FTP server started at Sun Apr 2 11:22:53 2000 Authorizer:None Hostname: First.BackWeb.de [HERE, STARTING FTP-SERVER, HOSTNAME IS VERY WELL KNOWN] Port: 8021 ------ 2000-04-02T09:22:53 INFO(0) ZServer PCGI Server started at Sun Apr 2 11:22:53 2000 Unix socket: /usr/local/zope/Zope-2.1.6/var/pcgi.soc ------ 2000-04-02T09:22:53 INFO(0) ZServer Monitor Server (V1.5) started on port 8099 Any idea ? I really would appreciate any hints. Thanks a lot. Frank

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Large user populations and local roles
by Dennis Nichols 02 Apr '00

02 Apr '00

Here's my situation. I'm starting to develop a Zope-based site that could have 100,000 or more (a lot more!) self-registered users and maybe 20 to 30 content creators for about 15 different content areas with only a few content creators per area. 1. I think the large number of users should be no problem for one of the DB-type user folders (GUF, UserDB, MySQLUF, ... yet to be determined) 2. I think the number of content creators and areas is within reason for using local roles. They won't change often. 3. I can't imagine what will happen when I want to add a local role and Zope tries to build a SELECT list of 100,000 names and sends it to my browser! So am I crazy to use Zope for something this size, or just too dense to see the obvious solution? Regards, -Dennis -- Dennis Nichols nichols(a)tradingconnections.com

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2.1.6 and authentication issues, continued
by Bill Anderson 02 Apr '00

02 Apr '00

OK, fresh, clean, no additional products install of 2.1.6. When going to management screen, I am asked to _re_authenticate, and the right frame shows the contents of index_html. I get the feeling this is related to the other issue I reported. After re-authenticating, and clicking on the top-lvel folder in the navigation frame, all seems well...so far. -- In flying I have learned that carelessness and overconfidence are usually far more dangerous than deliberately accepted risks. -- Wilbur Wright in a letter to his father, September 1900

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StarRave development demo (please comment)
by ed colmar 02 Apr '00

02 Apr '00

Hi all This is a project I have been working on for several months. It is a python Product that installs into zope and provides backend services for a particular type of website. The product was inspired by many different rave sites, almost all are static, and have no automatic connectivity with any other sites. I tried to implement all of the special functions of each site, and provide the means for each site to be interconnected. It is currently not ready for Distribution, or to appear on the zope website. I did want to make it available to others that may be able to offer advice or assistance. It does need a lot of work, but I hope in opening it up that the efforts can be more cumulative I hope to see the product reach a 1.0 release quality, and replace all the worn out manually updated rave sites that are out there. Please view the Server demo: (most of the code is here) http://www.starrave.org:8080/sr/demo/ And the Host demo: http://www.starrave.org:8080/sr/host/ There is a simple squishdot area set up for discussion of the product here: http://www.starrave.org:8080/sr/srd/ the source is available via webdav here: http://www.starrave.org:8080/sr/webdav/

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Re: [Zope] ZCatalog of method output
by Tres Seaver 01 Apr '00

01 Apr '00

"Rik Hoekstra" <rik.hoekstra(a)inghist.nl> > > -----Original Message----- > From: Loren Stafford <lstafford(a)icompression.com> > To: zope(a)zope.org <zope(a)zope.org> > Date: vrijdag 31 maart 2000 23:03 > Subject: [Zope] ZCatalog of method output > > >I read you could define a ZClass instance's method as a field-index of a > >ZCatalog; but it's not working for me. > > > >The DTML method dept_code is simply: > > > > <dtml-return "_.string.split(jobcode,'-')[0]"> > > > >When I call the method directly it returns a single character, the first > >character of the jobcode. > > > >The method dept_code is defined as a field-index of the ZCatalog JobsCat. > >But when I access JobsCat thus: > > > > <dtml-in "JobsCat(meta_type='Job Opening', sort_on='dept_code')"> > > <li> > > <a href="<dtml-var "JobsCat.getpath(data_record_id_)">"> > > (<dtml-var dept_code>) <dtml-var jobcode>: <dtml-var title></a> > > </dtml-in> > > > >the items are not sorted, and dept_code is null. > > > >Can anyone see what I'm doing wrong? > > As I understood it (but I may be wrong, cause I never understood why), a > DTML method in a field index is only usable if it doesn't contain any > variables anything, that is only if it contains only static values (like > <dtml-return "'1,2,3,4'"> for example. If you want something executed as a > property - use either an External Method or a Python Method. > It was something about the Catalog not being able to feed arguments to a > method, but I'd be glad if someone could explain this... When the catalog is calling your method, it does not have access to the DTML namespace stack, and so cannot pass through the parameters which all DTMLMethods expect: client, namespace, and REQUEST. Therefore, you can only catalog DTMLMethods in meta_data if they don't require any access to your object. The algorithm looks something like: 1. Check for attribute 'foo'. If object 'obj' doesn't have one, exit. 2. If the attribute is callable, then call it, passing 'obj' as the first (and only) paramter (i.e., 'foo( obj )' ) to get the value. 3. Otherwise, store the value, 'obj.foo'. Step 2 works for "normal" methods defined in Python, for Python methods taking 'self' as the only (non-defaulted) paramter, and ExternalMethods; it doesn't work for DTML Methods. This is a good reason to learn PythonMethods, if you haven't dived in there already. Tres. -- ========================================================= Tres Seaver tseaver(a)digicool.com tseaver(a)palladion.com

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Re: [Zope] ZCatalog of method output
by Rik Hoekstra 01 Apr '00

01 Apr '00

-----Original Message----- From: Loren Stafford <lstafford(a)icompression.com> To: zope(a)zope.org <zope(a)zope.org> Date: vrijdag 31 maart 2000 23:03 Subject: [Zope] ZCatalog of method output >I read you could define a ZClass instance's method as a field-index of a >ZCatalog; but it's not working for me. > >The DTML method dept_code is simply: > > <dtml-return "_.string.split(jobcode,'-')[0]"> > >When I call the method directly it returns a single character, the first >character of the jobcode. > >The method dept_code is defined as a field-index of the ZCatalog JobsCat. >But when I access JobsCat thus: > > <dtml-in "JobsCat(meta_type='Job Opening', sort_on='dept_code')"> > <li> > <a href="<dtml-var "JobsCat.getpath(data_record_id_)">"> > (<dtml-var dept_code>) <dtml-var jobcode>: <dtml-var title></a> > </dtml-in> > >the items are not sorted, and dept_code is null. > >Can anyone see what I'm doing wrong? As I understood it (but I may be wrong, cause I never understood why), a DTML method in a field index is only usable if it doesn't contain any variables anything, that is only if it contains only static values (like <dtml-return "'1,2,3,4'"> for example. If you want something executed as a property - use either an External Method or a Python Method. It was something about the Catalog not being able to feed arguments to a method, but I'd be glad if someone could explain this... Rik

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Re: Problems with jcNTUserFolder-0.0.4
by Jephte CLAIN 01 Apr '00

01 Apr '00

a.wacknitz(a)francotyp.com wrote: > Hello Jephte, > I have some problems with jcNTUserFolder in conjunction > with Zope-2.1.6 running under Windows 2000: I have not tested jcNTUserFolder under Windows 2000, but it should work except, I guess, if you run Windows 2000 in 'native' mode. > If a subfolder has its own NT user folder, a user, > given another role within this subfolder, is forced > to authenticate again and this authentication always > fails. the roles given to the user in the sub-folder *replace* the roles defined in higher folders, due to the way user folders work. the user in the subfolder must have the same role as in higher folders (so he can traverse the higher folders), plus any new roles in the subfolder. > Therefore it is not possible to change user's rights > within subfolders. Is this a known problem? > I hope you can help me solving this problem as I need > this functionality within my application. jcNTUserFolder was developped because htrd's NT User Folder has not this functionality, which I needed also. regards, jephte clain minf7(a)educ.univ-reunion.fr

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Extreme DTML fun: How to copy a dtml-document while saving its properties
by Fiore Basile 01 Apr '00

01 Apr '00

Hi, this is my code for copying a dtml document found in a ZClass product folder/ subfolder to an instance folder of my choice, this is done inside a folder creation routine. <dtml-in "defaultblocks.objectIds( 'DTML Document' )"> <dtml-let si=sequence-item> <dtml-with newRoot> <dtml-call "manage_addDTMLDocument( si, '', defaultblocks[ si ] )"> <dtml-in "defaultblocks[si].propertyIds()"> <dtml-if "not _['sequence-item']=='title'"> <dtml-call "newRoot[si].manage_addProperty( _['sequence-item'], defaultblocks[si].getProperty(_['sequence-item']), defaultblocks[si].getPropertyType(_['sequence-item']) )"> </dtml-if> </dtml-in> </dtml-with> </dtml-let> </dtml-in> But a problem occurs when a property is of type "lines", in that case the source value for ex. Test - Test1 Test2 Test3 get translated in the destination document as aproperty of type lines but with value ['Test', '-', 'Test1','Test2','Test3'] so i can't iterate over it with dtml-in tag. I guess a solution could be to reparse the string in a tuple object for example with an eval (I didn't find that in the zope namespace) Any idea? Thanks in advance for a reply Fiore Basile <fiore(a)alet.it> - AleT Net - Tel. +390503160000 Fax +390503161569

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Re: [Zope] User quotas
by Alexandre Ratti 01 Apr '00

01 Apr '00

Hello, At 12:00 31/03/2000 -0800, you wrote: >Date: Fri, 31 Mar 2000 20:37:15 +0200 >From: Pierre-Julien Grizel <grizel(a)xlogx.com> >Subject: [Zope] User quotas >1- Is there a way to keep user quotas on Zope objects ?... I.e. restrict the >amount of place a user can waste with its objects. >I briefly looked at the list's archive but did not find the actual answer. I remember this was discussed on the zope-dev list some time ago but I don't think anyone offered a solution. Anyway there isn't any build-in quota system. >2- Is there a way to purge the ZODB object history (ie. not the cache but the >older versions of each object) once I have a stabe "release" of my website >?... It would take less space on disk, and I suppose rendering will be faster. When packing the database (Control_Panel > Database Management) you can keep previous object revisions for a specified number of days. If you specify 0 all previous revisions will be discarded (and the Undo list will be cleared). HTH. Alexandre

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