November 2001 - Zope

Gadfly
by Ben Ocean 11 Nov '01

11 Nov '01

Hi; I'm implementing a product called zCommerce for the development of a simple shopping cart. The author (who is probably enjoying the weekend and not checking his email) recommends using Gadfly for the backend db and I've followed his advice. However, I can't figure out how to get the data out of Gadfly! If I were in MySQL, I'd run show databases and then show tables to figure out what was going on. But I don't even know how to get *into* Gadfly. What do? TIA, BenO

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login methods
by miah34＠msn.com 11 Nov '01

11 Nov '01

Hi everybody. I've asked some questions in the past about login methods and the answers I got were pretty confusing / over my head. So I've taken some time here to research this and want to see if I've got this down and then I have a couple more specific questions. Okay, so we have the following: 1. Basic HTTP authentication 2. Cookie authentication 3. URL rewriting with something like Cookieless Session. I imagine you could use a session variable like UserID taken from a user database? I don't know if this is a typical authentication method and I've just started looking into this. So I'm still learning about this, but my understanding is as follows. 1. Basic HTTP authentication is out if you want a customized login page. 2. I get mixed reactions to cookies - some people turn off cookies, etc. So maybe this isn't a great authentication method. Which would bring me to option 3. At this point, I don't have a specific problem/solution in mind, I'm just trying to learn about this so I have the appropriate tools in hand when I need them. So, finally, my questions: 1. Is there a way to do authentication without the use of cookies and without url rewriting? 2. How does Zope.org authenticate it's users? I've noticed that I can log in as more than one user at the same time from a single computer. I don't see a URL rewrite and I didn't think cookie authentication allowed you to do that. I'm not sure if that is clear, so here's an example of what I mean: I created a practice site using mysqlUserFolder and cookie authentication. If I login to that site and then open up a new browser window and go to that same site, it shows me as being logged in already. Zope.org doesn't do this. Thanks again everybody. -Jeremiah

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I Got the Concatenation Blues
by Ben Ocean 11 Nov '01

11 Nov '01

Hi; I've built a site with inline frames. Each page has one inline frame that bears the same name as the page calling it with the tag *_frame*. I want to code into my template a way to call the dtml document and render it within a noframes tag in the calling document. I have created a Python method called concatFrame.py: import string def concatFrame(str): frame = string.join(str,'_frame') return frame I'm trying to call it thusly: <dtml-var "concatFrame(title_or_id())"> It ain't working. What do I need to do? TIA, BenO

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Re: [Zope] I Got the Concatenation Blues
by Danny William Adair 11 Nov '01

11 Nov '01

On Sunday 11 November 2001 16:12, Ben Ocean wrote: > Hi; > I've built a site with inline frames. Each page has one inline frame that > bears the same name as the page calling it with the tag *_frame*. I want to > code into my template a way to call the dtml document and render it within > a noframes tag in the calling document. I have created a Python method > called concatFrame.py: > > import string > > def concatFrame(str): > frame = string.join(str,'_frame') > return frame > > I'm trying to call it thusly: > > <dtml-var "concatFrame(title_or_id())"> > > It ain't working. What do I need to do? 1.) "title_or_id()" returns a string. 2.) "concatFrame(a_string)" returns another string 3.) <dtml-var "this_new_string_which_actually_is_an_id"> will probably return your document html quoted :-o Try <dtml-var "_[this_new_string_which_actually_is_an_id]"> to render your document So it's: <dtml-var "_[concatFrame(title_or_id())]"> hth, Danny

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Zope 2.4.2 crashes, and crashes... help is needed!
by BZ 11 Nov '01

11 Nov '01

Ok, so my crashing problem has not gone away. I updated from 2.3.2 -> 2.4.2 about a week ago and since then Zope has been crashing every 15 minutes or so! Since it is a set of live sites I thought to try another one sitting by itself and yes, it runs for hours. Here is the very consistant output in the debug mode (get this over and over and over again) ++++++++++++++++++ [root@server1 bluewildfire]# WARNING: Python C API version mismatch for module _imaging: This Python has API version 1010, module _imaging has version 1007. /usr/local/zope/bluewildfire/lib/python/SearchIndex/__init__.py:91: DeprecationWarning: The usage of the SearchIndex package is deprecated since Zope 2.4. This package is only kept for backwards compatibility for a while and will go away in a future release. Please use instead the re-factored modules in Products/PluginIndexes. warnings.warn("The usage of the SearchIndex package is deprecated since \ WARNING: Python C API version mismatch for module _imaging: This Python has API version 1010, module _imaging has version 1007. /usr/local/zope/bluewildfire/lib/python/SearchIndex/__init__.py:91: DeprecationWarning: The usage of the SearchIndex package is deprecated since Zope 2.4. This package is only kept for backwards compatibility for a while and will go away in a future release. Please use instead the re-factored modules in Products/PluginIndexes. warnings.warn("The usage of the SearchIndex package is deprecated since \ ++++++++++++++++ I did remove the Imaging (but not the products) and that one warning went away but it still crashes. I have also run it with a -M to a log file and it really does not produce anything useful. There seems to be no pattern accept crashing. Any, help, at all... would be great. Thanks, BZ

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Concatenation
by Ben Ocean 11 Nov '01

11 Nov '01

Hi; I'm trying to concatenate a <dtml-var> with a string. I have this poor attempt: <dtml-var expr="_.string(title_or_id.'_frame')(_,_.None)"> where *title_or_id* is (of course) the <dtml-var> and *_frame* is the string. How should I do this? TIA, BenO

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Re: [Zope] Concatenation
by Ben Ocean 11 Nov '01

11 Nov '01

At 03:34 AM 11/11/01 +0500, you wrote: >Ben Ocean wrote: > > > > At 02:44 AM 11/11/01 +0500, you wrote: > > >Ben Ocean wrote: > > > > > > > > Hi; > > > > I'm trying to concatenate a <dtml-var> with a string. I have this poor > > > attempt: > > > > <dtml-var expr="_.string(title_or_id.'_frame')(_,_.None)"> > > > > where *title_or_id* is (of course) the <dtml-var> and *_frame* is the > > > > string. How should I do this? > > > > > >you could try > > > > > ><dtml-var title_or_id>_frame > > > > This won't do because I forgot to mention I need to concatenate this and > > call it as a <dtml-var> (apologies to Andreas Jung). > > > > ><dtml-var "_.string(title_or_id)+'_frame'"> > >sorry I meant _.str That gives me the following: <Python Method object at 0x8ac11b8>_frame >for calling the method test_frame from method test use this: > ><h2><dtml-var title_or_id> <dtml-var document_title></h2> ><p> >This is the <dtml-var document_id> Document >in the <dtml-var "_[(_.str(id)+'_frame')]"> Folder. ></p> That throws an error. Python thinks *_frame* is a variable, whereas the entire concatenation is the variable I need to call (your *test_frame* from method *test* above). Any other ideas? TIA, BenO

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Re: [Zope] Concatenation
by Ben Ocean 11 Nov '01

11 Nov '01

At 02:44 AM 11/11/01 +0500, you wrote: >Ben Ocean wrote: > > > > Hi; > > I'm trying to concatenate a <dtml-var> with a string. I have this poor > attempt: > > <dtml-var expr="_.string(title_or_id.'_frame')(_,_.None)"> > > where *title_or_id* is (of course) the <dtml-var> and *_frame* is the > > string. How should I do this? > >you could try > ><dtml-var title_or_id>_frame This won't do because I forgot to mention I need to concatenate this and call it as a <dtml-var> (apologies to Andreas Jung). ><dtml-var "_.string(title_or_id)+'_frame'"> This threw the following error: Error Type: TypeError Error Value: object is not callable: File /apache/ZopeInstallation/Zope_software_home/lib/python/DocumentTemplate/DT_Util.py, line 231, in eval (Object: _.string(title_or_id)+'_frame') (Info: title_or_id) File <string>, line 2, in f (Object: guarded_getattr) TypeError: (see above) Suggestions? TIA, BenO

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RE: Is Structured Text Broken in Zope 2.4x ???
by Steve Bain 11 Nov '01

11 Nov '01

Chris McDonough: Thanks for your courteous reply, and the links to definitive rules for ClassicStructuredText and StructuredTextNG. On zope.org, the available documentation on Structured Text for aspiring Zopers is a bit confusing, because it is often not clear what is definitive, what is is a proposal, what is ClassicStructuredText, what is StructuredTextNG, what is StructuredText Zwiki, and what may be just a member's opinion. It is also not clear as to which version of Structured Text is supported in which release of Zope. To document the spacing problem in STXNG bulleted outlines, I offer a specific example for the benefit of other readers: In Zope 2.4.1, the following structured text: - Red - Green - Blue - First - Second - Third - Freshman - Junior - Senior outputs to browser-rendered html that looks much like this in MS IE v5.50: o Red o Green o Blue o First o Second o Third o Freshman o Junior o Senior This spacing problem is the result of an unfortunate and non-XHTML compliant nesting of generated tags in the html output. Also, thank you for clarifying the issue of tables in StructuredTextNG. The rules are indeed very different from those that were implemented in some versions of ClassicStructuredText and Zwiki StructuredText. I note that the following StructuredTextNG source does render as an HTML table in Zope 2.41: |---------------------------------------| | Quan | Part # | Price | |=======================================| | 15 | DYST-100D | $2195.00 | |---------------------------------------| | 32 | IPO-337Z | $95.00 | |---------------------------------------| | 67 | ATA-456Q | $395.00 | |---------------------------------------| | 133 | TGT-375RST | $20.00 | |---------------------------------------| However, while the resulting html is formatted well enough to render as a properly-sized table in MS IE, the first column of the table does not render correctly. Of course, the whole issue of tables in Structured Text is probably not critical for the vast majority of applications. (HTML is plenty fine if one needs the next step up in formatting flexibility!) I will begin work on bug reports, patches, and possibly some enhancements for StructuredTextNG. Any help and hints will be gratefully accepted. Of primary interest is correcting the killer bug that appears in the structured-text method in Products.PythonScripts.standard in Zope 2.4.x. Correcting that bug appears to be the most elegant way to support StructuredText-formatted topics on ZPT-formatted pages. Steve Bain _________________________________________________________________ Get your FREE download of MSN Explorer at http://explorer.msn.com/intl.asp

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Using python libraries
by Jesper Holmberg 10 Nov '01

10 Nov '01

Hi all, I'm trying to create a new product. In my python code, I use some libraries (e.g. xml.dom.minidom) that are not present in my Zope installation. Where do I put these libraries so that they be available for python code run under Zope? Sorry if the question is a FAQ, but I haven't been able to find this in the docs. TIA Jesper -- Jesper Holmberg |"But how can | jesper.holmberg(a)enst-bretagne.fr | one be warm | ENST Br, BP 832, 29285 Brest, FRANCE | alone?" |

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