May 2001 - Zope - Zope lists

Zope business plan
by Andreas Vallen 28 May '01

28 May '01

Hi list-members, I'm a Zope apprentice and have been closely following the user group for 2 weeks now. The reason for my engagement in Zope is that I'm seeking for a business concept - I have the task of developing a so called business-plan in a university course. Why not take this serious - I thought. So I'm in the process of developing a plan that I might really execute. Convinced of the open-source idea as I am and being rather knowledgeable in Web-application development I thought I would finally try Zope. So - after more days of making the "acquaintance" than I had planned, I've now edited a first rough description of how I think that one can make himself self-employed (and employ other people hopefully) leveraging Zope. I invite anyone interested to look at my writings on http://www.zope.org/Members/vallen2/ . I hope to inspire as many people as possible. Perhaps those of us today doing Zope for our employers, who don't even realize what cost savings we provide to them, can one day be business-partners :-). Comments appreciated! Have fun, Andreas

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Re: dtml-Variablen in <dtml-in> loops?
by Philipp Robbel 27 May '01

27 May '01

Hi Tino, the problem I see with your (I agree: much cleaner) code is that for each group you issue a SQL statement. So if I have 1000 groups you'll end up with 1000 SQL queries. In my (ugly :-) code you'd only have 2 sql queries: - the first one: sqlCount (see previous post) - the second (cached) one outside the iterations: DATA=sqlListProjects (large list with 1000*Projects rows). About the caching: I read that in Dieter's Zope Book: http://www.dieter.handshake.de/pyprojects/zope/book/chap3.html So my question remains: is there either DATA[1:a+b] (both a and b are dtml-Variables) possible or <dtml-in .. start=a+b..> (both a and b are dtml-Variables). Thanks again, Philipp -----Ursprüngliche Nachricht----- Von: Tino Wildenhain Gesendet: So 27.5.2001 17:38 An: Philipp Robbel Cc: zope(a)zope.org Betreff: Re: dtml-Variablen in <dtml-in> loops? First of all, you dont have to cache SQL results via dtml-let. Zope does this already for you. If you have 2 queries: sqlGroupList: SELECT DISTINCT GroupID FROM Projects and the other: sqlProjectList(arg_GroupID) SELECT ProjectID, Project FROM Projects WHERE GroupID=<dtml-arg_GroupID type=int> so you can: <dtml-in sqlGroupList> GroupID &dtml-GroupID;: <dtml-in "sqlProjectList(arg_GroupID=GroupID)"> <dtml-unless sequence-start>,</dtml-unless> <dtml-var Project> </dtml-in> </dtml-in> This looks a bit cleaner imho ;) Regards Tino Wildenhain

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Re: [Zope] Index types, property types
by Leigh Ann Hildebrand 27 May '01

27 May '01

*sigh* I give up. I'll just use trial and error, as I'm tired of being RTFM'd about this. -- Leigh Ann Hildebrand leighann(a)onebox.com - email (650) 223-2199 x2231 - voicemail/fax ---- "Andreas Jung" <andreas(a)andreas-jung.com> wrote: > From the Zope book: > > TextIndex > Searches text. Use this kind of index when you want a full-text > search. > FieldIndex > Searches objects for specific values. Use this kind of index when > you > want to search date objects, numbers, or specific strings. > KeywordIndex > Searches collections of specific values. This index is like a > FieldIndex, but it allows you to search collections rather than single > values. > > I don't see your problems at this time. Every index has its special > purpose. > If you need more help provide some informations about the things you > are trying to index. > > Andreas > > ----- Original Message ----- > From: "Leigh Ann Hildebrand" <leighann(a)onebox.com> > To: "Andreas Jung" <andreas(a)andreas-jung.com> > Cc: <zope(a)zope.org> > Sent: Friday, May 25, 2001 3:12 PM > Subject: Re: [Zope] Index types, property types > > > > Thank you for the suggestion. However, I've got just that already > sitting > > here on my desk -- as I said, I've read the documentation available. > > I'm looking for something *more* than that explanation, which doesn't > > really seem to make clear the pros and cons of using the various > types. > > > > > > > __________________________________________________ FREE voicemail, email, and fax...all in one place. Sign Up Now! http://www.onebox.com

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Documentation for web-designers
by Markus Mohr 27 May '01

27 May '01

Hi! I'm looking for an introduction to Zope for web-designers. I'm having a bunch of people with lots of knowledge about html, javascript,... and such, but know nil about zope , dtml or python. Is there a documentation out there that I can give to them for a good start into zope? thanks a lot marksu

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Starting ZOPE when you don't have access to the machine
by Norman Khine 27 May '01

27 May '01

Hello, I have a virtual server, ie sub-hosting with a virtual sub host, and have configured zope 2.3.2b2 with python 2.0 on freebsd 4.2 I read in a previous post "somewhere" ;^) that if you start zope on a secure shell with ./start & and then close this connection the zope server will stop running. Which is what is happening, if I start the zope server via the shell and live the shell open the server can run forever, unless I restart it, but as soon as I close the shell connection the zope server shuts as well. My question therefore is -- How do I start the ZServer if one does not have access to the actual machine? Many thanks Norman /*/\*\/\*\ /*/ \*\ /*/ \*\ |*| Norman Khine /*/ /*/ /*/ \*\_ |*| |*||*| mailto:norman@khine.net /*/ /*/ /*/\*\/*/ \*\|*| |*||*| Purley, UK /*/ /*/ /*/\*\_/*/ \*\_/*/ |*|____ ^^^^^^^^^^^^/*/^^^^^^^^^^^\*\^^^^^^^^^^^ /*/ \*\

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Re: dtml-Variablen in <dtml-in> loops?
by Philipp Robbel 27 May '01

27 May '01

Hello again, Allright :-) I have cached the results of a sql-Method via <dtml-let DATA=sqlListProjects>. GroupID ProjectID Project 1 1 "Gurr" 1 2 "Muh" 2 3 "Ih-Ah" 3 4 "Mähh" 3 5 "WauWau" A second sqlMethod (sqlCount) returns: Count | 2 | ---- | 1 | ---- | 2 | ... The two sql-Methods are related: Count shoes, how many Projects belong to one GroupID. Now imagine that I want to print out the projects in the following way: GroupID 1: Gurr, Muh GroupID 2: Ih-Ah GroupID 3: Mäh, WauWau To do that I have an outer iteration over sqlCount's results: In this case it would iterate 3 times. Within each iteration there's another iteration - and this 2nd one depends on the current row's Count (2 times in the 1st outer iteration, 1 time in the 2nd iteration etc.). To print out the projects within the inner iteration I use the following technique: <dtml-in "sqlCount(_.None,_)"> //outer iteration! <dtml-if sequence-start> <dtml-call "REQUEST.set('TEMP',1)"> </dtml-if sequence-start> <dtml-call "REQUEST.set('TEMP2', (TEMP+_.getitem('Count'))-1)"> <dtml-in DATA start=TEMP end=TEMP2> //inner iteration //Print ProjectIDs here </dtml-in> <dtml-call "REQUEST.set('TEMP', TEMP+(_.getitem('Count')))"> </dtml-in> It may take some time to understand the code but it actually works as it should. I simply would prefer a cleaner solution where I would avoid the creation of different variables via REQUEST.set (which are then used in <dtml-in DATA start=VARIABLE) but simply do the calculation within the "start=" and "end=" Was that still a bad description of my problem? Thanks again, Philipp Robbel

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cache settings
by katrin 27 May '01

27 May '01

Hi everyone, can someone tell me what the permission 'Change cache settings' is for? I found that it's defined in the module Cache.py but I'm not sure what it is used for. Thanks for any help, Katrin --------------------------------------------------------- Katrin Kirchner beehive elektronische medien GmbH Fischerhüttenstr. 79 b D-14163 Berlin Tel.: 0 30 / 84 78 20

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Re: dtml-Variablen in <dtml-in> loops?
by Philipp Robbel 27 May '01

27 May '01

Hello, > [...] > <dtml-in "DATA[start:end]"> or whatever. > [...] yes, such a syntax should _theoretically_ do the proper thing, but I always get a "Error Value: sequence index must be integer" when trying to do the [start:end] stuff within the <dtml-in> Tag. Any Ideas how I could either a) use "DATA[start: x + y]" in Zope (where x and y are dtml-Variables!) b) do <dtml-in DATA start=1 end= x + y (where x and y are dtml-Variables!) Thanks again, Philipp

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Re: dtml-Variablen in <dtml-in> loops?
by Philipp Robbel 27 May '01

27 May '01

Hallo, sorry, I am using MS Outlook "Web Access" running on my company's server and I cannot find any option how to send messages in plain text! Sorry for that. > what exactly do you want to do? > May be start and size can help you? Basically I have an outer <dtml-in> and another nested one: <dtml-in ...> .... <dtml-call "REQUEST.set('TEMP',1)"> .... <dtml-call "REQUEST.set('TEMP2', (TEMP+_.getitem('Count'))-1)"> <dtml-in DATA start=TEMP end=TEMP2> ... </dtml-in> <dtml-call "REQUEST.set('TEMP', TEMP+(_.getitem('Count')))"> </dtml-let> You can see from the code that I have to work with REQUEST.set to get around the problem that I cannot type: <dtml-in DATA start=TEMP end="TEMP + _.getitem('Count')-1"> or something. Can you think of a way to use (python) calculations in the "end=" of <dtml-in>? Thanks again, Philipp Robbel

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Logging In
by Daniel Fairs 27 May '01

27 May '01

Hi, How does one log someone into Zope without using the HTTP authentication? Do I have to use a different type of User Folder? Essentially, I'd like to have a login/password box in the top corner of the screen available all the time so the user can log in when they want. Any recommendations? Many thanks, Dan _________________________________________________________________ Daniel Fairs | daniel.fairs(a)spiderplant.net | www.spiderplant.net

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