September 2000 - Zope

sorry I forgot subject
by Luciano Caroti 27 Sep '00

27 Sep '00

Excuse me!! In my previous post I forgot subject. Luciano.:))

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(no subject)
by Luciano Caroti 27 Sep '00

27 Sep '00

Hi, I would like to build a repository for dowloading software in Zope. The user need to register and then I send him an URL inside email to access for downloading file, but: How can I automate the process of authentication and selective downloading, is there an example or have you any website that explain this type of issue. Thank you in advance . Luciano Caroti

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Version Control in Zope / Managing releases
by Bob Crosley 27 Sep '00

27 Sep '00

As our development team grows, and our application grows more complex, version control in Zope becomes more problematic. I'm trying to do some research into the different techniques people are using to manage application development. Here's our current situation. *We have a web application that contains both your standard web site/marketing copy type pages, and the application itself. *We have a team of 7 developers including application developers and HTML coders/Graphic Artists. We have a number of problems we're trying to solve. If you have a solution that's worked for you for any of these problems, I'd love to hear about it. 1) "Code Collisions." - Developers overwriting each other's work. 2) Partial updates - Right now, we have new pages for marketing content that are held up because we don't have our new features for the application done yet. So we can't update marketing pages without updating the app at the same time, (one ZODB) unless we directly update the production servers. (Eeek!) We looked at ZCVSMixin for a solution to problem 1, and it shows a lot of promise but isn't quite there yet. For problem 2, we considered the idea of running two Zopes for the app, using one to serve the marketing pages, and one for the application pages so they could be updated independently. Has anyone done that? We have images and appearance attributes stored in the ZODB and don't want to have to keep seperate sets of those, so any solution would have to be able to draw off the same images and appearance variables. Any feedback anyone can provide would be very helpful. Thanks, Bob

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Re: [Zope] Restricting URL access to objects that are not complete web pages
by Stephen Simmons 27 Sep '00

27 Sep '00

Steve, Ideally the publishability of an object would be an internal property of that object, not something that is set externally via rules in SiteAccess. It's been a little while since I last looked at SiteAccess, but wouldn't using SiteAccess force you to store publishable objects in one part of the database hierarchy and non-publishables in another? If you wanted publishables and non-publishables all mixed up in the same folders, SiteAccess's rules might get a bit complicated. Another approach could be to: - create a folder that does a RESPONSE.setStatus(404) as the URL traversal machinery passes it. This sets up the default condition of 'NotFound' error for the URL - at the end of the URL, if the final object is publishable or the final item is a publishable method called on a publishable object, do a RESPONSE.setStatus(200) to say 'OK'. Would this be feasible without hacking HTTPResponse.py too much? Stephen ___________________________ Stephen Simmons HealthArena B.V. phone +31 20 486 0555 stephen.simmons(a)healtharena.net ----- Original Message ----- From: "Steve Alexander" <steve(a)cat-box.net> To: "Stephen Simmons" <stephen.simmons(a)healtharena.net> Sent: Thursday, September 21, 2000 3:21 PM Subject: Re: [Zope] Restricting URL access to objects that are not complete web pages > Stephen Simmons wrote: > > > > > My thoughts were to use an html_header that tracks how deeply components are > > nested so that inner components turn off the page wrapper. This achieves 1 > > and 2. This also achieves 3 if sections raise an exception if their page > > wrapper is not turned off. > > You only want to see standard_html_footer and so forth when > REQUEST.steps[-1]!=fragment_id, so it would not be accessible directly > by URL. > > Try something like this for standard_html_footer: > > <dtml-if "REQUEST.steps[-1]=='standard_html_footer'"> > <dtml-raise type="NotFound"></dtml-raise></dtml-if> > </BODY></HTML> > > I think using siteaccess for this is more elegant, though. All the > knowledge about what is allowed and what is not is maintained in one > place, and the knowledge can be declared flexibly using regular expressions. > > -- > Steve Alexander > Software Engineer > Cat-Box limited > http://www.cat-box.net >

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Re: [Zope] WorldPilot has the bits...
by Alastair Burt 27 Sep '00

27 Sep '00

John Chandler <johnc(a)nipltd.com> writes: > > > Any ideas how the sync would be done? > > > > > > > WorldPilot has the ability to do this, allegedly. > > WorldPilot's Palm side of things was still broken last I checked (last week, > IIRC) - it was complaining of login errors, though you could login happily > through other means. Get the freshest version of the software you can as it > might be fixed now. The CVS version works better. I have got it to synch memos, todos and addresses with no problem. The calendar entries get transferred but when they appear on the web page the times and dates are awry. --- Alastair

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Re: [Zope] secure management with Site Access?
by Rob Miller 27 Sep '00

27 Sep '00

David Elkins writes: > Have you tried setting up something like zope.domain.com with the https > SiteRoot and Apache pointing directly at manage? Pointing a virtual host directly at manage I can do, but where do I put the SiteRoot? If I put an https SiteRoot in a directory, then plain ol' unencrypted access won't be happening... all of the URLs inside the site will point to 'https://' instead of 'http://', right? Or am I missing something? > You could additional add > in a rewrite/proxy command to redirect to the SSL side for > www.domain.com/manage. Again, getting Apache to do the right thing I've got figured out. It's just the SiteRoot causing the problem; all of the links inside the folder with the SiteRoot will be either 'http' or 'https', but I'm looking for some solution that will allow either, depending on the previous REQUEST. I know that SiteRoot is basically a special kind of access rule, maybe a smarter access rule can be used instead of a SiteRoot... Thanks for your feedback, and please let me know if there's something that I'm not seeing. rob

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RedHat site mentions Zope
by Stephan Richter 27 Sep '00

27 Sep '00

Hello everyone, I just saw on www.redhat.com the following: Features for the developer: ... "Popular web application development tools like PHP and Zope" Link: http://www.redhat.com/products/software/linux/rhl7_standard.html Wow, pretty cool. It is only a five bullet list! I guess Zope is winning acceptance rapidly. Regards, Stephan -- Stephan Richter CBU - Physics and Chemistry Student Web2k - Web Design/Development & Technical Project Management

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PyGreSQLDA
by Leichtman, David J 27 Sep '00

27 Sep '00

Has anyone had significant speed issues using the PyGreSQLDA? It seems like I'm only getting one DB connection at a time. Is this an issue with the DA, with Zope, or am I doing something wrong? I have a pgsql db running just fine, and in Zope I have a connection instantiated at the top level that all of my ZSQL methods use. Shouldn't it still be able to establish multiple connections, though? I guess I'm confused as to how it works. Thought I was using it right, but if I execute a query through Zope it takes a few milliseconds unhindered. However, if multiple people try to run a query at the same time, it usually takes a few seconds, as if only one person were connected at a time. I'd love elucidation from someone educated on this subject, as I am most certainly not :) ~ Dave

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String manipulation
by Spicklemire, Jerry 27 Sep '00

27 Sep '00

"how can I manage it to cut a string. for example: a string property (testtext) with 500 words. but only want to give out 20 characters of tis text." Python sequence slicing syntax can be done with DTML, like so: <dtml-call "REQUEST.set('first_20_char', '_['some_long"string'][:20])"> <dtml-var first_20_char> wher the '[:20]' means from the begining of the string, through the 20th "slice". One thing to be aware of is that the positions start counting at 0, and are best thought of as falling "between" the individual characters, like so: a b c d e f g 0 1 2 3 4 5 6 7 So the 20th position ('slice') is just past the 19th character, if the first character is counted as 0.

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Exceptions, exceptions...
by Ramiro Brito Willmersdorf 27 Sep '00

27 Sep '00

Hi, Yesterday I posted the message below, and I'm happy to inform all that the problem was basically just my advanced braindeath. I decided to triple check everything today, after a good night of sleep, (and a so so day of real work) and found out that the variable I could swear was being used inside the external method wasn't really. It would be referenced only after the location where the exception was triggered, so it being undefined didn't trigger an error as I had naïvely expected. I just had forgotten to set it explicitly in the page that called the external method. The good news is that the exception machinery then seems to work exactly as one would expect, and quite wonderfully at that. Many thanks to all those that developed such a great system, Ramiro. > Hi, > > I have a DTML document with the following structure: > > <dtml-var standard_html_header> > <dtml-try> > <dtml-call "my_external_method(REQUEST)"> > <p> Report that everything was ok and wait for ack. > <form method=POST action=index_html> <input type=submit value="OK"> </form> > <dtml-except MyException> > <p class="warning"> Warn about problem found by external method. > <form method=POST action="treatError"> <input type=submit value="OK"> </form> > </dtml-try> > <dtml-var standard_html_footer> > > and it works wonderfully, to be honest I thought it was quite uncanny to define > and raise an exception inside the python module, and having it caught by the > DTML document. > > Now, to improve the treatment of errors I need to refer, inside the > <dtml-except> block, to some variables that were defined in the REQUEST > variable (I'm pretty confident of this because I used them inside the external > method), but it seems that the original REQUEST variable is no longer set > inside the <dtml-except> block. Is this correct? What actually happens (in > simple terms, please :) when an exception is thrown? > > I also tried the very few other tricks I know with DTML (<dtml-with > "_.namespace..."> outside the <dtml-try> block, plus some other voodoo) but > couldn't get it to work, either. > > Should I return these values as error values with the exception? I can do it > if this is the only option, but I'm already using the return value for > information related to external method things, and I'd rather not mix the two > ``domains'', so to speak. > > Many thanks for any tips, -- Ramiro Brito Willmersdorf rbw(a)demec.ufpe.br GPG key: http://www.demec.ufpe.br/~rbw/GPG/gpg_key.txt

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