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A quick poll about the zope start page
by Philippe Jadin 04 Apr '01

04 Apr '01

Hello, We all know that the most important thing when we try someting is the first "overview" we have about it. So came the idea of this little poll : "What would you* like to see on the zope welcome screen after installation? * as a newbie. * as an experienced zopist. " Any idea welcome, there will most probably someone listening at DC (N'est-ce pas Chris M? ;-) Philippe

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zope 231 crashing on start
by Jason Cunliffe 04 Apr '01

04 Apr '01

hm...help please. Been using Zope231 happily on Win98se for many days. Suddenly this evening it quits rights after startup. /index_html displays but it quits with following error message in the start.bat window: Any ideas? - Jason .... asynchat.async_chat.handle_error (self) File "D:\Program Files\Zsite231\ZServer\medusa\asyncore.py", line 365, in hand le_error self.close() File "D:\Program Files\Zsite231\ZServer\HTTPServer.py", line 364, in close p.more() # free up resources held by producer File "D:\Program Files\Zsite231\ZServer\Producers.py", line 108, in more getattr(self.logger, self.method)(self.bytes) File "D:\Program Files\Zsite231\ZServer\medusa\http_server.py", line 274, in l og ' - - [%s] "%s" %d %d "%s" "%s"\n' % ( File "D:\Program Files\Zsite231\ZServer\medusa\logger.py", line 247, in log self.logger.log ('%s:%s' % (ip, message)) File "D:\Program Files\Zsite231\ZServer\medusa\logger.py", line 77, in log self.write (message) File "D:\Program Files\Zsite231\ZServer\medusa\logger.py", line 53, in write self.maybe_flush() File "D:\Program Files\Zsite231\ZServer\medusa\logger.py", line 65, in maybe_f lush self.file.flush() IOError: [Errno 9] Bad file descriptor D:\Program Files\Zsite231>

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Re: [Zope] zSQl and changing connection ids?
by Dieter Maurer 04 Apr '01

04 Apr '01

David Hassalevris writes: > How much work would be involved in creating an "alternative" zSQL method > (product?) that would accept the "connection id" as a parameter? This > seems like such a natural. I think, I would need an hour or two. You may have a look at URL:http://www.dieter.handshake.de/pyprojects/zope/CCSQLMethod.html It extends Z SQL methods by application controllable caches. You want something simpler, but you can get a feeling for the amount of work needed to extend a product. Dieter

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[newbie] key error
by Tres Seaver 04 Apr '01

04 Apr '01

"Jason Wehmhoener" <webmaster(a)saturn.deanza.fhda.edu> wrote: > I'm attempting to create a custom skin for a CMF 1.0beta site. > > I'm getting a key error with an image object whose id is "about_btn". > The full contents of the DTML method is this: > > <dtml-var about_btn> > > I've placed the image object in a folder called "images". > > What am I doing wrong? First, you'll get better answers for skins-related questions in the "zope-cmf mailing list":mailto:zope-cmf@zope.org Second, the 'images' folder probably isn't in the "skin path" of the skin you have selected. See Jeffrey Shell's How-to on using CMF skins: http://cmf.zope.org/doc/devel/writing_skins Tres. -- =============================================================== Tres Seaver tseaver(a)digicool.com Digital Creations "Zope Dealers" http://www.zope.org

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Accessing DTML's this() from PythonScript
by Jérôme Loisel 03 Apr '01

03 Apr '01

Hi! My site has an admin menu. That was originally a DTML Method which had become long, complex and hard to maintain. So I re-wrote it as a Python Script. But I now have an additional problem. When my DTML Method is called from /folder/document.html/method, this() refers to the document. But in PythonScript, context and context.this() refer to folder/ instead. Does anyone know how to have access to the document.html object instead? Thanks in advance. I can supply sample code if I am being unclear. Cheers, Jérôme Loisel -- Jérôme Loisel, étudiant et webmestre Lévinux: GNU/Linux pour la communauté http://www.levinux.org/

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user login via form (calling authenticate)
by rob.sheppard＠btinternet.com 03 Apr '01

03 Apr '01

I've been trying to use the authenticate(password, REQUEST) method in User.py from a login form (as described in the Beehive "Users, Roles and Permissions" document). I want to have a members login like the one on Zope.org. In a folder called "Members" I've created an acl_users folder with: a) one test user, b) a simple DTML doc containing a form with 2 fields (Name and Password), and c) a DTML doc which matches the form's action containing: <dtml-if "acl_users.getUser(REQUEST.form ['Name']).authenticate(REQUEST.form ['Password'],REQUEST)"> password correct. <dtml-else> Password incorrect. </dtml-if> When I try to login using the form as the test user in /Members/acl_users, Zope brings up its own login dialog. If I enter the test user from /Members/acl_users into Zope's login dialog, it tries 3 times then reports: "Zope Error Zope has encountered an error while publishing this resource. Unauthorized You are not authorized to access getUser. " and the last line in the error comment reads: File /home/sites/site6/users/london/Zope-2.2.2- src/lib/python/AccessControl/ZopeSecurityPolicy.py, line 159, in validate Unauthorized: authenticate If I enter my own user/password at Zope's dialog box (i.e. valid in the toplevel /acl_users, owner/manager roles), it tries 3 times and reports: "Zope Error Zope has encountered an error while publishing this resource. Unauthorized Sorry, a Zope error occurred " and the last line in the error comment reads: File /home/sites/site6/users/london/Zope-2.2.2- src/lib/python/AccessControl/ZopeSecurityPolicy.py, line 159, in validate Unauthorized: authenticate OK, I figured that its an access problem with the User.py methods, but I've tried setting the proxy roles of the form and the action document to Manager, and setting the permissions on /Members/acl_users to anonymous but still get the same problem. Zope version is 2.2.2, Python 1.5.2. What have I missed? How do I give an anonymous user access to getUser? -- Rob PS I've searched the mail archives at NIP (found a couple of people with the similar problem but no answers) and the bug collector (nothing).

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[Q] Book problems with early examples
by Carl David 03 Apr '01

03 Apr '01

I wrote concerning book examples, and was asked to clarify what was going on. Here is "navigation" which exists in root: <dtml-if expr="_.len(PARENTS) > 1"> <h2><dtml-var title_or_id>Section</h2> <a href="..">Return to parent</a><br> </dtml-if> <ul> <dtml-in expr="objectValues('Folder')"> <li><a href="&dtml-absolute_url;"> <dtml-var title_or_id></a> <br></li></dtml-in> </ul> and here is index_html from /ChemAdm/FallSched: <dtml-var standard_html_header> <h1>This is the Fall Master Schedule</h1> <hr>Choose from the above days of the week to see<hr> <dtml-tree> <dtml-var getId> </dtml-tree> <hr> <p>This is the <dtml-var id> Document in the FallSched folder.</p> <dtml-var standard_html_footer> To the best of my knowledge there are no typos here, and yet ... Thanks for any help Carl David

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Re: [Zope] RESPONSE.redirect + TARGET
by Dieter Maurer 03 Apr '01

03 Apr '01

Diego Rodrigo Neufert writes: > But it's on a framed page, and when I do the redirect I need to kill all = > de=20 > frames to show the redirected page.... I do not know a way that a Web server can do that directly. But a Web server may return a page containing a Java Script that reloads the complete frame set. Of course, this requires Java Script to be enabled. Dieter

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Re: [Zope] Zope vs other Web Languages.
by Michael R. Bernstein 03 Apr '01

03 Apr '01

Jens Benecke wrote: > > On Mon, Apr 02, 2001 at 08:00:41PM -0700, Michael R. Bernstein wrote: > > Steven Grimes wrote: > > > ... With Zope, I can build (for example) a fairly sophisticated Intranet > > for a company in a couple of days, without breaking into a sweat. This > > Intranet will include personal folders for the users, a bug/ticket > > tracker, industry news, departmental pages, and any of a dozen other > > goodies like discussion forums and a collaborative documentation system. > > Just a small question in between: You can build this site because all the > required functions are available as Zope modules (or "products") and you > just need to plug them together, right? How would Zope cope if you did > _not_ have these ready-made modules or if they didn't fit your needs? Mmm. I can build this site that *quickly* because ceratin functionality is available as Products, or part of the Zope core functionality. Authentication, security, and delegation are built in, for example. > What I mean is this: In PHP you _can_ add PHPLIB, which is a class library > does user management, authentication, sessions, forms with automatic error > checking (both Javascript and server-side), database-independant SQL > connections and much more for you. Soon there will be PEAR, which is > comparable to CPAN for Perl and will offer all kinds of modules. > > But if you need to do your _own_ applets (e.g. plug in something like a > client-side Javascript calendar that connects to a server-side SQL-DB > before displaying itself and when acted upon pre-fills some input fields - > just an example), how difficult would that be? Client side javascript (Bleh!). :-) I've built several small applications from scratch, such as an FAQ manager, and I'm working on a couple of bigger ones now which I'll release as Zope Products. > I know the OOP model fairly well, so I understand you can extend Zope's > classes to an extent to fit your needs. However ATM I'm a little worried > about Zope when I see people posting 20-line DTML code just to squeeze a > string through a regexp. (Or five-line Python - Perl, PHP, etc. can do it > in one.) Python emphasizes legibility over terseness. It's a trade off that won't appeal to some, I'm sure. I wouldn't suggest using DTML for your applications business logic, anyway. Use Python for that. DTML is very well suited to presentation logic tasks. This also helps enforce separation of content/presentation/logic. Again, a trade off that may not appeal to some. > > Then I can refine it over another couple of days. By any sane measure, > > this is far more cost effective for a company than paying two or more > > programmers to build something equivalent in a couple of months, just to > > save a grand on hardware. > > That's precisely why I started looking at Zope. I'm not interested in a Web > GUI, in dividing content and design (We're a team of two developers, we can > organize ourselves without CVS like functions) or such. What I'm interested > in is making my site > > - easy to extend later (with well sorted out OOP, this should be > manageable) True. > - easy to manage even if it gets bigger (not having to worry about things > like "where do I put this new feature") Zope's pretty good at that, IMO. > - and secure, of course. (ie. built-in filtering for FORM variables and > such things would be nice. PHP does this with addslashes() and the like). Well, Zope does automatic casting of variables by using a simple naming convention in your forms (ie. <input name="size:int">) the ':int' is stripped off the actual variable name when you want to access the value. > Last but not least: Is there a Zope intro for people like me who already > _have_ a couple years of Web development with PHP and other languages and > don't need things like "insert common HTML header/footer" presented as > Zope's primary features? Have you checked out the New Riders Zope Book: http://www.zope.org/Members/michel/ZB Or this one: http://www.handshake.de/~dieter/pyprojects/zope/book/chap1.html http://www.handshake.de/~dieter/pyprojects/zope/book/chap2.html http://www.handshake.de/~dieter/pyprojects/zope/book/chap3.html HTH, Michael Bernstein.

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Re: [Zope] Searching a FieldIndex for prefix or OR
by Dieter Maurer 03 Apr '01

03 Apr '01

Randall F. Kern writes: > Is it possible to search a catalog on a field index for either a given > prefix, or any of a list of values? "Prefix" means your fields contain strings... You could try to emulate such searches through range searches. In usual cases (not all, I agree), PREFIX(x) == p is similar to "p <= x <= (p + chr(255)*n)" with "n" sufficiently large (usually "1" will be enough). A search against a list of values is supported directly. See the catalog section of URL:http://www.dieter.handshake.de/pyprojects/zope/book/chap3.html Dieter

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