February 2001 - Zope

Javascript help!
by Spicklemire, Jerry 07 Feb '01

07 Feb '01

Oops . . . I got a little too user friendly in the prior post. The array reference should be : document.form.elements[array_position].value and the function has to be called as: function el_count (g) or else you have to replace all the 'g.' names with whatever you are refering to your form_name as. Later, Jerry S.

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Excavating for Clues
by Spicklemire, Jerry 07 Feb '01

07 Feb '01

Hi Zope Fans, I've been spoending too much time the last couple of days trying to come up with a clean way to solve a little problem. Some old posts that I've been perusing may be related, but that's not certain. Anyway, here goes. Jim Penny followed up after: > Dieter Maurer wrote: > > > Oliver Vecernik writes: > > > > > I'm designing an application gathering data with forms. Navigation > > > should be done with Prev and Next buttons. As long as I'm not leaving > > > the form data should be entered, processed and the *same* or another > > > form should be displayed, depending on input of the user. > > > > > > So far I'm able to gather data, store them in a database, but can > > > anybody give me a clue or point me to some docs how to control which > > > form should be displayed next? It should depend on users input of let's > > > say a text field. > > > > Look for the "RESPONSE.redirect" method. > > > > Dieter > > Dieter, as usual, gave a good succinct answer. But in this case, I > the answer.think that the problem is in the way the question is framed, and > not the answer. <snip a long illuminating post> > You do not have to redirect. > Redirection destroys your REQUEST, forcing you to do other things to hold > information. > > Jim Penny Great! Well, except that I seem to be having exactly the opposite problem. When I call "REQUEST.redirect(other_url)", the REQUEST isn't destroyed, in fact all the parameters are retained, right down to the original method, so that a "get" method passes parameters appended to the URL, and a "post" method includes all the original REQUEST parameters in the header. Not what I need. All I want to do is to pipe the output of a page generation process back to the requestor (a PDF file, in this case), so that it appears to be a page being returned in response to a get, submitted with no parameters. I've also tried "REQUEST.setBase(other_url)" and just "REQUEST(other_url)" but the differences are so subtle as to be undeteactable (by me, at least), and the parameter passing confuses the browser to the point that it has no clue how to handle a garden variety PDF file, and the user has to hit "refresh" to wake it up. Actually, so far I'm just trying to do a real redirect to a real PDF file, but I feel like I need to get that working before I tackle the file generation + pipe part. Thanks for any help, Jerry S.

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Re: [Zope] User Specifies dtml template
by Dieter Maurer 07 Feb '01

07 Feb '01

Tom Freeman writes: > How can I create a user defined dtml document? > What I want to do is to have an option to create 'toms dtml document', > this will contain: > > <dtml-var standard_html_header> > <dtml-var header> > <dtml-var header-about> > >  > >  > > <dtml-var footer> > <dtml-var standard_html_footer> > > instead of the standard: > > <dtml-var standard_html_header> > <h2><dtml-var title_or_id></h2> > <p> > This is the <dtml-var id> Document. > </p> > <dtml-var standard_html_footer> > > how can I do this? is this possible? It is hard coded in "OFS.DTMLMethod.default_dm_html" and "OFS.DTMLDocument.default_dd_html", respectively. Of cause, you can change the code.... But, you can also go for a ZClass. Give it an "index_html" method that combines a header, the content and a footer. Let your user only be concerned with the content. Dieter

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Re: [Zope] Exceptions and Python Scripts
by Dieter Maurer 07 Feb '01

07 Feb '01

Chris Withers writes: > Hi, > > I'd like to do a try...except in a Python Script. > > Unfortunately, it doesn't look like I'm allowed to import the exceptions module: > > Error Type: ImportError > Error Value: import of "Exceptions" is unauthorized In Python, they are build in. Aren't they in PythonScripts? They should be (this is a wish). > To make matters worse, a lot of Zope's internals still throw string based > errors, so a very general except clause is the only way to catch them. > Unfortunately, the only way to analyise those exceptions is to use > sys.exec_info(), but using that in a python script always throws up an > authenticatino box. You can selectively (unfortunatly only globally) allow import. The list archive will tell you the details. It is something like (in a product): import module; module.__allow_access_to_unprotected_objects=spec with "spec" set to "1" for unrestricted access to all module variables and "spec" set to a dictionary mapping to "1" for controlled access. Dieter

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Re: [Zope] Filtering Free E-mail (OT? Was: 20 Million...)
by Ben Edwards 07 Feb '01

07 Feb '01

This seems a bit harsh, I can imagin the headlines, OPEN SOURCE COMUNITY BAN FREE EMAIL. Also it is worth noting that replying to this kind of stuff is not a good idea. If the return address actually exists (which is unlickly) sending a message (even a remove one) simply confirms that your email address is live and a good one to spam! >Maybe a bit off topic, but is it feasible to block access to >mailinglists in general from free e-mail addresses like Hotmail, MSN, >Excite, Yahoo! etc. to avoid these kinda messages? > >Or are there simply too many developers and programmers using such a >free e-mail address? > >Cya >Jonathan > > >_______________________________________________ >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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Re: [Zope] Forking a dtml-call
by Dieter Maurer 07 Feb '01

07 Feb '01

Justin Stockton writes: > Is there any way to fork the dtml-calls (or the ZSQL Methods) so that the > server will finish the work in the background while returning control back > to the browser? You can start an external process to do this. Be careful, to use quite a new Zope version. I have had a hard time with external processes and older Zope versions. Dieter

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Re: [Zope] Dynamic charts from Zope objects
by Dieter Maurer 07 Feb '01

07 Feb '01

complaw(a)hal-pc.org writes: > Is there some product or method that I can use to generate timelines (i.e., > money vs. time) dynamically based upon user-defined start dates? Maybe ZGDChart can help you. Dieter

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MySQLDA 2.0.3 DateTime Error
by Diego Rodrigo Neufert 07 Feb '01

07 Feb '01

Hi, since I have upgraded to MySQLDA 2.0.3 and MySQL 3.24.32 I'm getting this error when the table has a datetime field and I try _.DateTime(date).. Error Type: TypeError /cadastro/suacontaError Value: __div__ nor __rdiv__ defined for these operands and here's the traceback Traceback (innermost last): File /var/local/zope/lib/python/ZPublisher/Publish.py, line 222, in publish_module File /var/local/zope/lib/python/ZPublisher/Publish.py, line 187, in publish File /var/local/zope/lib/python/Zope/__init__.py, line 221, in zpublisher_exception_hook (Object: Traversable) File /var/local/zope/lib/python/ZPublisher/Publish.py, line 171, in publish File /var/local/zope/lib/python/ZPublisher/mapply.py, line 160, in mapply (Object: suaconta) File /var/local/zope/lib/python/ZPublisher/Publish.py, line 112, in call_object (Object: suaconta) File /var/local/zope/lib/python/OFS/DTMLDocument.py, line 189, in __call__ (Object: suaconta) File /var/local/zope/lib/python/DocumentTemplate/DT_String.py, line 538, in __call__ (Object: suaconta) File /var/local/zope/lib/python/DocumentTemplate/DT_In.py, line 711, in renderwob (Object: cadastro.sqlTodasCompras(uid=opt.SESSION['uid'])) File /var/local/zope/lib/python/DocumentTemplate/DT_Util.py, line 334, in eval (Object: _.DateTime(data).mm()) (Info: data) File <string>, line 0, in ? File /var/local/zope/lib/python/DateTime/DateTime.py, line 736, in __init__ File /var/local/zope/lib/python/DateTime/DateTime.py, line 356, in _calcSD TypeError: (see above) -- Diego Rodrigo Neufert Webmaster / Web Developer - Magic Web Design ----------------------------------------------------------- diego(a)magicwebdesign.com.br www.magicwebdesign.com.br Curitiba - PR - Brasil

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JavaScript help!
by Spicklemire, Jerry 07 Feb '01

07 Feb '01

Hi Peter, This is way too late, but in case you haven't resolved the problem with names of some HTML page elements, with colons (e.g. "name='data:text'"), the cleanest way to get around this is to retrieve the corresponding positional value of the 'elements' array of the form, and then refer to it's contents as: document.elements[array_position].value Now, how do you see the elements array values? One of our Javascript gurus solved that with: function el_count (form_name) { var newWin = window.open("","","resizable=yes, toolbar, scrollbars, status, height=400, width=600"); var msg = '<html><body><p><table border="1"><tr><th>element</th><th>Name</th><th>Value</th><th>Description</t h><th>Mandatory</th></tr>'; for (var i = 0; i < g.elements.length; i++) { msg = msg + '<tr><td>' + i + '</td><td>' + g.elements[i].name + '</td><td>' + g.elements[i].value + '</td>'; if (g.elements[i].desc > '') msg = msg + '<td>' + g.elements[i].desc + '</td>'; else msg = msg + '<td> </td>'; if ((g.elements[i].mand) || (! g.elements[i].opt)) msg = msg + '<td>Yes</td>'; else msg = msg + '<td> </td>'; msg = msg + '</tr>'; } msg = msg + '</table></p></body></html>'; newWin.document.write (msg); // document.write (msg); } Place this in the <head> section of your page while debugging. Just keep in mind that if you add any new elements on the page, above the element you have to refer to by it's array position, you will need to update the value to match it's new position. I was scanning the lists for Javascript tips, and saw that you only got one reply, and it was very different from this one. Later, Jerry S.

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Re: [Zope] Little Zope horror story
by Shai Berger 07 Feb '01

07 Feb '01

> | fuser -n tcp -ikv 8080 > > This isn't available on BSD systems. > > I'm sure this is a Linux only utility, Actually, at least on our RedHats it's called lsof (LiSt Open Files). As far as I know, it won't kill for you, but I've been using it a lot to counter situations a lot like Dieter's (I missed his original story somehow). In my case, the stuck processes were little Oracle threads (processes?). lsof -i lists internet files with the processes that hold them. "lsof -i | grep 8080" became an idiom. I haven't gotten yet to the part where I awk the output to get a list of pids to kill, but I might... Have fun, Shai.

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