June 2001 - Zope - Zope lists

freaky files
by seb bacon 14 Jun '01

14 Jun '01

Check out this traceback. I don't even have a /var/tmp/python-root directory on my machine! What's going on? How can I make my code use my python2.1 version of mimetools? File /var/Zope-2.3.2-src/lib/python/Products/JamkitTypes/MailMessage.py, line 232, in _unpack_part (Object: DynamicType) File /var/tmp/python-root/usr/lib/python1.5/mimetools.py, line 146, in decode ValueError: (see above) Cheers, seb -- [] j a m k i t seb bacon T: 020 7749 7218 F: 020 7739 8683 M: 07968 301 336 W: www.jamkit.com

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How to make a script return rendered dtml
by Tim Hicks 14 Jun '01

14 Jun '01

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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PythonScript calls Z SQL Method
by Horst Wald 14 Jun '01

14 Jun '01

Hi! >can one PythonScript-Object A() call another PythonScript-Object B() > >without help from 'above'? Like (suppose we're in A) >x=5 >y=B() >z=6 > >y=context.B() > >should do it. > >hoping this helps. Thank you! It did. But can a PythonScript-Object A() call a Z SQL Method B(X) without help from 'above'? Like in the above example? Neither y=context.b('x') nor y=context.b(X='x') work. I get: Resource not found Horst _________________________________________________________________________ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com.

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NewB Qs: Classification advice please + many2many relationships
by Felix Ulrich 14 Jun '01

14 Jun '01

Hi Coming from the Java / RDMS world, I'm not sure how best to lay out my new project in Zope. I have Events, and Businesses, both of which have a hierarchy of types (e.g. Events/Entertainment/Films and Business/Entertainment/Theatre, etc.) The events have venues, which are instances of Businesses. My question is: how should I classify my objects, and once I've done that, how do I maintain many-to-many relationships, e.g. all the Events happening at Business X? Any suggestions would be greatly appreciated. Thanks Felix. ____________________________________________________________ Do You Yahoo!? Get your free @yahoo.co.uk address at http://mail.yahoo.co.uk or your free @yahoo.ie address at http://mail.yahoo.ie

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(urgent) manage_changeProperties(data='new content') problem
by Peter Bengtsson 14 Jun '01

14 Jun '01

This works: context.dtmldocument.manage_changeProperties(title='New Title') This does NOT work: context.dtmldocument.manage_changeProperties(data='<dtml-var hello>') Please help. Peter

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easier way to get this() from DTML Document?
by Kyler B. Laird 14 Jun '01

14 Jun '01

In order to get the real context when I call a Python Script from a DTML Document, I've found that I need to do something besides just looking at the context (because it's the container of the DTML Document). For now, I'm explicitly passing this() <dtml-var "standard_html_footer(this=this())"> and then I test if it's set in my Python Script. If it is, I use it. Otherwise I use the context. Is there a way around this? I don't want users to have to put in the "this=this()" junk. Can I somehow pry open the '_' TemplateDict enough to get the same info? Thank you. --kyler

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Question about __ac_permissions__ and more generally about the do cumentation
by Bocquillon Philippe 14 Jun '01

14 Jun '01

Hello In the following piece of Python code for Zope: __ac_permissions__=( ('View management screens', ('manage_main',)), ('View', ('', 'index_html', 'update', 'show_source','view_image','picture',)), ('Change', ('manage_edit',), ('Manager',)), ) Could you tell me: 1) What does the first "empty" method ('') associated to the View permission mean? 2) Is the Manager method associated with the Change permission the class constructor for a Manager class which would represent the Manager role? 3) Why is Manager method needed in addition to the manage_edit one? 4) Why are there 2 tuples associated with the Change permission instead of having one tuple containing both the manage_edit and Manager methods? More generally, where can I find a REFERENCE doc (instead of a collection of how-tos or other items more or less related to the topic which is interesting you) in which such information (I mean developping Python code for Zope products) is __clearly__ defined? Thanks a lot in advance, Philippe

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inserting file into external db
by Corbett Waddingham 14 Jun '01

14 Jun '01

First, hello to the list. Second, I've recently started using Zope at work and find that it's just different enough from Perl, C, and Java to be a little confusing, so hopefully this won't be a patently obvious question. How do you convince Zope to insert a MIME file into an external db properly? Here are some code snippets of what I've tried. First, the DTML to upload the file. <form action="do_add_doc" method="post" enctype="multipart/form-data"> <table cellspacing="0" cellpadding="2" border="0"> <p>File<input type="file" name="doc_file" size="25" value="" > <input class="form-element" type="submit" name="submit" value=" Add " > Next, the DTML to process the file: <dtml-call sqlInsertFile> And the SQL to insert the file into the MySQL db (takes argument doc_file, DOC_ID is set to 'auto increment'): insert into TABLE (DOC_ID, DOC_FILE) values ('0', <dtml-sqlvar doc_file type=nb>) The file is showing up, but it's being munged at some point. Hopefully this is as simple as uuencoding the file or somesuch, but I can't figure out to get Zope to do that. I should point out that it is a requirement of this application that the documents be accessible via ODBC, hence the MySQL db (so simply storing them in Zope's db isn't an option, unfortunately). Any pointers would be much appreciated. Cory __________________________________________________ Do You Yahoo!? Spot the hottest trends in music, movies, and more. http://buzz.yahoo.com/

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Re: [Zope] string module
by Bak ＠ kedai 14 Jun '01

14 Jun '01

>with view I get ['test','pdf'] > >2>>>mydtml_method.html: ><dtml-call "REQUEST.set('filename' , 'test.pdf')" > ><dtml-call "REQUEST.set('file_id' , _.string.split(filename,'.pdf'))" > ><dtml-var file_id> > <dtml-call "REQUEST.set('file_id' , _.string.split(filename,'.pdf')[0])" > >with view I get ['test',''] > >This make a invalide id for my PDFclass instance. >I don't know how to separate the 2 arguments of file_id. > >Thanx > > () > / \ > | <> | > (____) zazen rules ... Sbaline > > > > > >_______________________________________________________ >Send a cool gift with your E-Card >http://www.bluemountain.com/giftcenter/ > > > >_______________________________________________ >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: DTML<->Python confusion (RE: [Zope] How to make a script return rendered dtml)
by Bjorn Stabell 14 Jun '01

14 Jun '01

Wow, thanks Evan. I should've asked these questions a long time ago... From: Evan Simpson [mailto:evan@digicool.com] > From: "Bjorn Stabell" <bjorn(a)exoweb.net> > > How do you do dtml-with and dtml-let in a Python script? (I.e. > > put something on the namespace) > > You can't. Scripts can use the DTML namespace in the same > way that Python expressions in DTML can, but that's it. > > On the other hand, you can create (and pass along) all the > local variables you want. Is it possible to append an object to the namespace? Isn't that what dtml-with does? > > How do you give positional (not keyword) arguments to a DTML > > method; is there any difference? > > Keyword arguments are put on top of the namespace. You can't > use positional arguments, except the standard (None, _) idiom. > DTML was never meant to pass arguments around, that's what > the namespace is for, for what that's worth :-P But the other way around, calling Python functions from DTML (via <dtml-var func>) the positional arguments are gotten from the namespace, right? [... good andswer to __call__ et al deleted :) ... ] > > When does RESPONSE need to be passed; it can always be gotten > > from the REQUEST, right? > > Right. So why do so many DTML methods / documents have REQUEST as an explicit argument? It looks like a convention that has to mean something. > > Are namespace, _, REQUEST, and context just different names for > > the same thing? > > Not quite. The namespace, accessible in DTML as "_", is a > pile of objects. > The REQUEST is a particular object created by ZPublisher to > hold information > about the request, such as form variables and URL > information. The context > (or client, for DTML) is the object on which the method was > called. If the > DTML Method is the target of the request, or if you pass a > client as the > first argument when calling it, the Method pushes it onto the > namespace. > Also, the context (like any other Zope object) is acquisition > wrapped. The > ultimate acquisition parent of any publsihed object is a > special wrapper for > REQUEST. All this means that when you ask the namespace for > the name "foo", > it will end up looking for it in the context, in the > context's containers > all the way to the root, and the REQUEST. I am a little bit confused about the fact that the acquisition path is related to how the document was called, not just to the containment relationships it is involved in. Or is it? myobj.aq_parent isn't necessarily the object that contains myobj? Is the namespace stack basically the same as the acquisition path? Bye, -- Bjorn

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