September 2000 - Zope

Re: [Zope] Newbie Question: File upload in from my own Product
by Dieter Maurer 20 Sep '00

20 Sep '00

Dicken, Peer writes: > I´m new to Zope ;) I´m currently composing a set of products for my website > and have a little problem now: > I need to make a Product that makes it possible to upload a file, well, > basically a tuned "FILE" object. > I need to add a description. Is it right to add the FILE object in my > ZClass, or what should I do? That is one option. However, images have properties of their own. You can just define a new property "description" and give it a value. Look at the "PropertyManager" interface (-> object reference (-> zdp.zope.org) or interface Wiki (-> dev.zope.org) or the source. Dieter

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Re: [Zope] A strange difference between DTMLDocument versus DTMLMethod Zope 2.2.2
by Dieter Maurer 20 Sep '00

20 Sep '00

cuiod-tec Jens Gelhaar writes: > The following few lines have a different result, when I execute it within an > DTMLDocument or DTMLMethod. > > <dtml-var standard_html_header> > <dtml-in "objectItems('Folder')"> > <dtml-var title_or_id> > </dtml-in> > <dtml-var standard_html_footer> > > The DTMLMethod result looks like it should be, but within a DTMLDocument the > result is empty. When I modify the <dtml-in> tag slightly, then it works to That is (almost) as it is supposed to be. In both cases, "objectItems" is looked up in the so called DTML namespace. If your object is a DTML document, then the (relevant) top level element is the document itself. If it is a DTML method, the method itself is not placed on the namespace, only its "client", i.e. the object for with the method has been called (usually, but not necessary a folder). The only maybe a bit surprising thing is that a DTML document seems to have an "objectItems" method which, of cause, returns the empty sequence. If you use "PARENTS[0]", then you get a similar result to that, you would have with a DTML method. Dieter

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Re: [Zope] SQL
by Dieter Maurer 20 Sep '00

20 Sep '00

Tom Deprez writes: > Somebody experience with a parent code table and how to implement it in > Zope (with dtml-tree)? > Or is a PArent-Code table not SQL-like and is there a better solution? > > eg : > > Parent Code Description > 0 0 MasterNode > 0 1 Child1 of MasterNode > 0 2 Child2 of MasterNode > 1 3 Child of Child1 There should be a HowTo on zope.org about sophisticated dtml-tree usage. Make a search. Some months ago, there has been a thread in this list about a problem with tree generation by means of a Z SQL method. The problem was solved. You may search the archive to get more details. Dieter

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Re: [Zope] Last modified - including contents?
by Dieter Maurer 20 Sep '00

20 Sep '00

Marcin Kasperski writes: > Two questions related to presenting 'last modified at ...' message on > HTML page. > > 1) I have some pages (for instance my website news page or some indexes) > which are dynamically build from another pages (usually via dtml-in - > reading elements of some type from some folder). Does there exist any > easy way to present the _newest_ bobobase_modification_time for all used > elements? Currently on my news page I show 'last modified at 2000/08/14' > although in fact this page has been modified at '2000/09/16'... "bobobase_modification_time" is a "DateTime.DateTime" object. You can compare such objects and compute the maximal value as you process the page components, something like: <dtml-call "REQUEST.set('maxdate',this().bobobase_modification_time)">  <dtml-in ...> <dtml-if "maxdate < bobobase_modification_time"> <dtml-call "REQUEST.set('maxdate',bobobase_modification_time)"> </dtml-if> ..... </dtml-in> <dtml-var maxdate>  > 2) Similar question related to marking website parts as 'New' or > 'Recently changed' in different indexes. What is the easiest way to > calculate date of the newest change in the whole folder hierarchy > starting from the given folder? You first enumerate all objects with "ZopeFind" (documented, e.g., in the Zope object reference --> zdp.zope.org) and then compute the maximum as shown above. Dieter

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Re: [Zope] More Import Problems
by Dieter Maurer 20 Sep '00

20 Sep '00

Joshua Brauer writes: > As a horrid workaround for the earlier problem with Z-classes I exported all of my data, restarted Zope and am re-importing, or would like to re-import data, but some of it won't import back into the same install that it came from. I re-imported the products and then want to re-import the parts of the site.... I get the following error: > > Error type: ImportError > Error value: cannot import name query Your error message suggests that there is a problem in line 217 of "SearchIndex.TextIndex": from Lexicon import Lexicon, query, stop_word_dict Apparently, "Lexicon" is imported from the module "Lexicon" successfully, but "query" cannot be imported. This is not astonishing as "SearchIndex.Lexicon" does not (no longer?) contain a "query". Obviously, there is an inconsistency between "SearchIndex.Lexicon" and "SearchIndex.TextIndex". Put it into the Collector. In the meantime, you may give "Lexicon" a function "query". It should take two arguments and return a dictionary of tuples (int,float) (you should return the empty dict). This, probably, will let you import your site, but "TextIndex" may not work as you would like. Dieter

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Re: Re(2): [Zope] Zope not starting after VaryTag install
by Didier Georgieff 20 Sep '00

20 Sep '00

Le 18 Sep 00, à 15:49, Tino Wildenhain a écrit : > I just checked with 2.1.6 (winNT) and it worked without problems. > Can anybody else confirm this? Sounds like it's Varytag under Linux related. A - first step : 1 - I reinstalled a fresh 2-1-6 from the source (on Corel Linux and python from the source). 2 - Reinstalled my products : * ZMySQLDA 1.2.0 * NFGnav 0.6 * Yihaw 1.0 3 - copied my ancien Data.fs 4 - packed the database 5- all works fine again. No problem. B - second step : 1 - made a tar file from this install (to avoid long reinstalls after each try) 2 - installed Varytag 1.0 3 - even a simple index_html makes the traceback. C - third step : 1 - delete the (now) bad install, and untar the previous one. 2 - Works fine. 3 - remove the 3 products from the panel control and from the Products directory 4 - Works fine. 5 - compact the database. Works fine. so now i have a Zope 2.1.6 without any product. 6 - install Varytag 7 - same traceback. > > Just after installing VaryTag, Zope (2-1-6) restart fine, but when i > > try to connect to my zope adress, i got an error (traceback further). ImportError Sorry, a Zope error occurred. Traceback (innermost last): File /zope/2-1-6/lib/python/ZPublisher/Publish.py, line 214, in publish_module File /zope/2-1-6/lib/python/ZPublisher/Publish.py, line 179, in publish File /zope/2-1-6/lib/python/Zope/__init__.py, line 202, in zpublisher_exception_hook (Object: ApplicationDefaultPermissions) File /zope/2-1-6/lib/python/ZPublisher/Publish.py, line 165, in publish File /zope/2-1-6/lib/python/ZPublisher/mapply.py, line 160, in mapply (Object: index_html) File /zope/2-1-6/lib/python/ZPublisher/Publish.py, line 102, in call_object (Object: index_html) File /zope/2-1-6/lib/python/OFS/DTMLMethod.py, line 150, in __call__ (Object: index_html) File /zope/2-1-6/lib/python/DocumentTemplate/DT_String.py, line 502, in __call__ (Object: index_html) File /zope/2-1-6/lib/python/OFS/DTMLDocument.py, line 162, in __call__ (Object: zope_powered) File /zope/2-1-6/lib/python/DocumentTemplate/DT_String.py, line 443, in __call__ (Object: zope_powered) File /zope/2-1-6/lib/python/DocumentTemplate/DT_String.py, line 381, in cook (Object: zope_powered) File /zope/2-1-6/lib/python/DocumentTemplate/DT_String.py, line 231, in parse (Object: zope_powered) File /zope/2-1-6/lib/python/DocumentTemplate/DT_Var.py, line 248, in __init__ File /zope/2-1-6/lib/python/DocumentTemplate/DT_Util.py, line 357, in name_param (Info: ({'': '"zope_logo.tag(BORDER=\'0\')"'}, 'var', 1, 'name')) File /zope/2-1-6/lib/python/DocumentTemplate/VSEval.py, line 157, in __init__ ImportError: No module named gparse -- Didier Georgieff DDAF du Bas-Rhin - Cellule SIG 2, rue des Mineurs 67070 Strasbourg Cedex tél : 03.88.25.20.33 - fax : 03.88.25.20.01 email : didier.georgieff(a)agriculture.gouv.fr SIT du Bas-Rhin : http://www.bas-rhin.sit.gouv.fr GéoWeb http://sertit10.u-strasbg.fr

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acl_users.manage_users and RESPONSE.redirect
by Chris Jenson 20 Sep '00

20 Sep '00

I am using the following code (adding to acl_users folder with manage_users) to do user self registration after some initial authentication using Zope authentication and a common login/passwd. It works fine if things are as they should be, but when things go south, password and confirm not equal, login already exists, etc., it isn't so great. I would like to get ahold of the output of manage_users to display on a redirected RESPONSE back to the original vendorRegistration DTML Document. How can I do this? Also, is there a better way to check for a successful user add? Right now I am using, " <dtml-if expr="acl_users.getUser(login)"> ", and that works, but wondered if there was a better way. Help would be much appreciated. I am new to Zope and still trying to get my head around it. thanks, Chris ***** DTML Document - vendorRegistration ****** <dtml-var standard_html_header> <h2><dtml-var title></h2> <p>Register for Vendor Manual distribution</p> <form action="registerAction" method="post" enctype="multipart/form-data"> <table> <tr> <td> Login(e-mail address): </td> <td> <input type="text" name="login"> </td> </tr> <tr> <td> Password: </td> <td> <input type="text" name="password"> </td> </tr> <tr> <td> Confirm Password: </td> <td> <input type="text" name="confirm"> </td> </tr> </table> <input type="submit" value=" Register " > </form> <dtml-var standard_html_footer> ***** DTML Document - registerAction ****** <dtml-var standard_html_header> <h2><dtml-var title></h2> <dtml-call "REQUEST.set('name', login)"> <dtml-call "REQUEST.set('password', password)"> <dtml-call "REQUEST.set('confirm', confirm)"> <dtml-call "REQUEST.set('roles', ['cwcVendor'])"> <dtml-call "REQUEST.set('submit', 'Add')"> <dtml-var expr="acl_users.manage_users(submit='Add', REQUEST=REQUEST )"> <dtml-if expr="acl_users.getUser(login)"> <dtml-var expr="RESPONSE.redirect('Registered')"> <dtml-else> <dtml-var expr="RESPONSE.redirect('vendorRegistration')"> </dtml-if> <dtml-var standard_html_footer>

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Re: [Zope] zope crashing unexplicably, also not releasing ports
by Dieter Maurer 20 Sep '00

20 Sep '00

David McCuskey writes: > i've been using zope for about 6 months now and have had this re- > occurring problem with it randomly crashing. *worse part about it is > that the port isn't released when it crashes*. this means we can't use > the same startup script to get zope back up, can't make any cron jobs to > check for availability , and must do it manually. The TCP spec mandates this behaviour: When a TCP socket is open when the serving process goes down, the port must not be reused until the TCP packet lifetime expires. Motivation: if this would not be the case, then a new serving process could receive messages that have been sent to its predecessor. It would really been confused. If you know, what you are doing, you can disable this feature. There are socket options for this. I think, they are named "SO_REUSEADDR" and "SO_NOLINGER". See the socketoption documentation for details. Dieter

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A strange difference between DTMLDocument versus DTMLMethod Zope 2.2.2
by cuiod-tec Jens Gelhaar 20 Sep '00

20 Sep '00

The following few lines have a different result, when I execute it within an DTMLDocument or DTMLMethod. <dtml-var standard_html_header> <dtml-in "objectItems('Folder')"> <dtml-var title_or_id> </dtml-in> <dtml-var standard_html_footer> The DTMLMethod result looks like it should be, but within a DTMLDocument the result is empty. When I modify the <dtml-in> tag slightly, then it works to <dtml-in "PARENTS[-1].objectItems('Folder')"> I does not seem to me consistent. Is it a new feature or bug. Beside, when I call the DTMLMethod from another Document, the result is empty to. Thanks Jens

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SQL
by Tom Deprez 20 Sep '00

20 Sep '00

Hi, Somebody experience with a parent code table and how to implement it in Zope (with dtml-tree)? Or is a PArent-Code table not SQL-like and is there a better solution? eg : Parent Code Description 0 0 MasterNode 0 1 Child1 of MasterNode 0 2 Child2 of MasterNode 1 3 Child of Child1 .... Thanks in advance, Tom.

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