June 2001 - Zope - Zope lists

redirect - FORGET what I asked
by Tom Deprez 17 Jun '01

17 Jun '01

Sorry, just after writing my q'n concerning redirect in a python script, my light went on tried it out and that worked, yes! Well, the solution is simple... (if you want to know) context.sql_methods.products_delete(aID=context.REQUEST['aID']) url=context.REQUEST.URL1 context.REQUEST.RESPONSE.redirect(url, lock=0) Regards, Tom.

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How-to develop a folderish product?
by Rene Pijlman 17 Jun '01

17 Jun '01

Hello, I've just studied the "Python Product Development Tutorial" (http://www.zope.org/Members/hathawsh/PythonProductTutorial) This shows how to develop a Python-based product with a non-folderish object. I've managed to develop mij own non-folderish object this way. Now I'd like to learn how to develop a folderish object (again, Python-based). Can someone please provide some guidance? Is there a how-to/tutorial for folderish products as well? Or is it not that different? A practical question about folderish objects: Should it inherit from Folder or ObjectManager directly? Should it still inherit from OFS.SimpleItem.(Simple)Item? TIA, René Pijlman

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RE: [Zope] How-to develop a folderish product?
by Oliver Bleutgen 17 Jun '01

17 Jun '01

> I mean objects that can contain other objects, like folders can. > There is at least one product that is not folderish: the poll product > created in the product development tutorial. I suspect there are more. >>Here is another really good resource. >>http://www.zope.org/Documentation/ZDG/ Hi Rene, I had the very same Problem, i.e. nice explanation for developing non-folderish python products in the docs you mentioned, but nil for folderish products. What I did was simply looking at the source from OFS/Folder.py and just use the same base classes like Folder does. That way you just don't get the functionality which is defined in folder.py, i.e. the content-view, IIRC. You also get to see what is needed for a folderish product from the zope developers point of view. I did that because I felt I had more control about what happens where, but I assume thats just paranoia on my side and one could derive from OFS.folder without problems. But looking at the source at this stage of learning gives a lot insight. cheers, oliver

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How-to develop a folderish product?
by jimbo 17 Jun '01

17 Jun '01

>>I've just studied the "Python Product Development Tutorial" >>(http://www.zope.org/Members/hathawsh/PythonProductTutorial) This <snip> >>Now I'd like to learn how to develop a folderish object (again, >>Python-based). Can someone please provide some guidance? Is there a >>how-to/tutorial for folderish products as well? Or is it not that >>differe= >>nt? I'm not sure what you mean because it seems products are folderish by there very nature. I think anything you place under the Products root has to have extra security information defined for it. >>A practical question about folderish objects: Should it inherit from >>Folder >>or ObjectManager directly? Should it still inherit from >>OFS.SimpleItem.(Simple)Item? Depends on what you want to do. Want WebDAV support? how about XML-RPC?Here is another really good resource. http://www.zope.org/Documentation/ZDG/ -Jimbo

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Zope Documentation/Help - a suggestion
by Jon Edwards 17 Jun '01

17 Jun '01

Reading a lot of the recent posts about the need for more documentation, the thought struck me that there's already loadsa resources out there, but people don't know where to find them! So, what if people who have an interest/expertise in a particular area collected together useful links/resources (How-tos, articles, mailinglist posts) in one place, so that people could find them easily? As an example, I created a doc in my CMF Dogbowl Member's section with a list of lots of Windows-related links I've found on my travels. (I don't claim to be an expert, just someone who has collected lots of links! :-) http://cmf.zope.org/Members/joned/winstuff - Note, I've just submitted this for publication, so it may not yet be publicly available - it is Sunday, after all! Ideally, it should probably be a collection of CMF-link objects, which would then be searchable, discussable (and rateable in the near future!). But I didnt want to clutter up the Dogbowl at this stage, in case the idea didnt catch on! :-) Comments, suggestions, additions and corrections welcomed! Cheers, Jon

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newbie: superuser login authorization failed
by Nicole Lallande 17 Jun '01

17 Jun '01

Source of installation binaries: http://starship.python.net/crew/jrush/Zope/Zope232.html - rpm install with zserver rather than apache pcgi install (I am still trying the rpm installation vs tarball.) OS: RH7.0 Python: python-1.5.2-27 Browser: NCommunicator 4.77 Resources: 1. mailing list archive: I found a thread written by Darci and Chris - Darci was having the problem of loging in as superuser - but then seemed to resolve the problem by stopping and restarting zope - which I did ad naseum. 2. zopedocs 3. zope help I know it isn't the information in the access file because I ran 'python zpasswd.py -u superuser -p mynewpassword -d localhost' - nada - 'Authorization failed' I have tried using NN6 - no joy. a look at the authfailed page source shows:  well - that went right over MY head! On the mailing list whenever anyone mentions having a problem with the rpm installation the response is try the tarball install. I really do not want to do that if I can avoid it so if there is anyone out there who can help me with this..please? TIA, Nicole -- ######################## Nicole Lallande nicole(a)nmlconsulting.com 760.753.6766 ########################

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Getting Images from SQL Database
by Neil Beattie 17 Jun '01

17 Jun '01

Hi All, Any pointers on how I can display a jpeg image that has been stored as a image in a mssql database. I am using ZODBC as the database connector. I am trying to display the images from ZOPE. I display the pictures without trouble using VB or PHP but am completly new to Python / Zope! Regards, Neil

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newbie q: error messages after install - RH rpms
by Nicole Lallande 17 Jun '01

17 Jun '01

Hi all, I have downloaded and installed all the files, and yes zope is running - when I tried localhost:8080/manage it did not work and so I changed it to localhost:8021/manage because that seems to be the port it is running on: python z2.py -p /var/zope/Zope.cgi -u zope -z /usr/share/zope -Z /var/run/zwatchdog.pid -w -f 8021 -m -l /var/log/zope so - after running that command I get: 220 mango FTP server (Medusa Async V1.12.4.1 [experimental]) ready. 500 'GET': command not understood. 500 'Connection:': command not understood. 500 'User-Agent:': command not understood. 500 'Pragma:': command not understood. 500 'Host:': command not understood. 500 'Accept:': command not understood. 500 'Accept-Encoding:': command not understood. 500 'Accept-Language:': command not understood. 500 'Accept-Charset:': command not understood. > at which point it just hangs. Apologies if this q has been addressed before but I did: try your documentation look through your archives. TIA, Nicole -- ######################## Nicole Lallande nicole(a)nmlconsulting.com 760.753.6766 ########################

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DTML<->Python confusion (RE: [Zope] How to make a script return rendered dtml)
by Bjorn Stabell 17 Jun '01

17 Jun '01

I've spent hours, maybe days, being confused about this as well. According to the Zope API documentation and ZDP at http://zdp.zope.org/projects/zfaq/faq/DTML/959888072 http://zdp.zope.org/projects/zsnippet/snippets/DTMLTags/CallingDTMLMetho ds someDTMLMethod(_.None, _) should work. Because of the unclear/complex calling conventions and integration between DTML and Python I've had to keep some code in DTML. Other related questions are: How do you do dtml-with and dtml-let in a Python script? (I.e. put something on the namespace) How do you give positional (not keyword) arguments to a DTML method; is there any difference? When is __call__ called, when is __str__ called, and when is index_html called? Other basic functions worth knowing about for a class/object to be a good-behaving Zope object? When does RESPONSE need to be passed; it can always be gotten from the REQUEST, right? Calling a DTML method, when to use client and when to use REQUEST? Is calling with client and REQUEST the same as adding client to the namespace (REQUEST) and calling it with an client=None? Are namespace, _, REQUEST, and context just different names for the same thing? I've been dreaming about a FAQ answering all of this (and a bunch of ZClasses questions I have). Me thinks the ZDP should be integrated with Zope.org, and all Zope.org members given access to add FAQs (I am not allowed to add FAQs now). Ideally, somebody should be adding FAQs all the time, and the FAQ index should be posted regularly to zope-dev... Btw, I think http://zdp.zope.org/projects/zfaq/faq/DTML/959888072 gets the order of aMappingObject and aClient wrong in the first code line. Bye, -- Bjorn -----Original Message----- From: Tim Hicks [mailto:tim@sitefusion.co.uk] Posted At: Thursday, June 14, 2001 00:15 Posted To: Zope List Conversation: [Zope] How to make a script return rendered dtml Subject: Re: [Zope] How to make a script return rendered dtml ----- Original Message ----- From: "Eric Balasbas" <ebalasba(a)bway.net> To: "Tim Hicks" <tim(a)sitefusion.co.uk> Cc: <zope(a)zope.org> Sent: Wednesday, June 13, 2001 4:33 PM Subject: Re: [Zope] How to make a script return rendered dtml > I'm not sure if this is the best way to do it, but if you want to render a > DTML method or DTML document inside a Python script, use the syntax: > > someDTMLMethod(_.None, _) I tried this: print context(_.None, _) and got this error: Error Type: NameError Error Value: _ So I tried context.id(_.None,_) and got the same. So I tried 'print context(None,_)', with the same error resulting. Finally, I have tried: print context(None,) and got Error Type: KeyError Error Value: standard_html_header This last error at least seems like it's on the right track as it is parsing through the text of the file. What's going wrong, any idea? thanks tim > Eric Balasbas > Senior Developer > eric(a)virtosi.com > > http://www.virtosi.com/ > Virtosi Ltd. > Design -- Branding -- Zope > > > On Wed, 13 Jun 2001, Tim Hicks wrote: > > > I have a ZClass (testclass) which subclasses DTMLDocument, and within this > > zclass, I have a script (python) called index_html. Obviously, this script > > is called each time an instance of testclass is requested. Based on the > > presence of a query string, I want to either return the document_src > > (although with a few modifications), or simply return the rendered > > instance... by this, I mean have all the dtml tags that are in the instance > > evaluated. So, my question is, how do I make Zope evaluate the dtml tags? > > > > Here is what I have so far in my script: > > > > ------------ > > if context.REQUEST.QUERY_STRING == 'editor': > > print context.raw > > else: > > print context > > > > return printed > > ------------ > > > > The 'else' statement simply gives me things like, > > > > <dtml-var standard_html_header> > > > > I also tried 'else: render(context)', which was simply a guess on my part, > > but I get a Zope error as follows: > > > > Error Type: AttributeError > > Error Value: validate > > > > Can anyone enlighten me? > > > > Cheers > > > > tim

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Login question
by Mike Groves 17 Jun '01

17 Jun '01

Hello, I've just started using Zope and am having great fun setting up a new site. However, I'm having a few problems setting up user login. I need the ability to allow users to log in and log out using forms, instead of the standard Zope user folder http authentification. I'm not using any of the content management/portal products (CMF etc.) and I've had a look at most of the products in the User Management section of zope.org including LoginManager, but I can't seem to work it out. Has anyone got a simple example showing me how to add users, and a simple login and log out form for either LoginManager, CookieCrumbler or anything else? Thanks very much for any help Mike Groves

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