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Re: [Zope] queries and tiny tables and python methods... oh my!
by Dieter Maurer 30 Jun '00

30 Jun '00

Timothy Wilson writes: > The problem is hooking them all together. Passing the query to a > PythonMethod is throwing up the following error: > > Error Type: TypeError > Error Value: argument l: expected read-only character buffer, instance found > /usr/local/src/zope/Zope/lib/python/Products/PythonMethod/PythonMethod.py, > line 168, in __call__ > (Object: parseLocation) > (Info: ((['SB_B208'],), {}, None)) > File <string>, line 2, in parseLocation > TypeError: (see above) > > OK, it looks to my relatively inexperienced eyes that the Python Method > isn't getting an argument of the type is expects. Correct. Instead of a string, it gets a class instance. > <dtml-call "REQUEST.set('user_id', user_id)"> > <dtml-in "qry_person(uid = user_id)"><br> > <dtml-in "buildingCodes(parseLocation(l))"> > <dtml-var building><br> # 'building' comes from the Tiny Table > </dtml-in> > </dtml-in> "l" should be a string but it seems to be an instance. Where does "l" come from? > I'd appreciate it if anyone has any ideas about this. I'm probably making > the whole thing too complicated, but for reasons of code reuse, this seemed > like the most efficient approach. Dieter

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Re: [Zope] File upload failure. Help needed.
by Dieter Maurer 30 Jun '00

30 Jun '00

Urvashi Singh writes: > I am a new user of Zope. I have Zope--linux2-x86.tar.gz bundle installed > on my Linux machine, up and working. While I was trying to create a simple > page using dtml files, I wanted to upload a few files from my hard drive > onto Zope database. When I choose the Browse button to select a file from > the targeted directory and say "Add", I get an error message: > > "The document contacined no data. > Try again later, or contact the server's administrator." This message comes from your browser not from Zope. The browser has received an empty HTTP response. This usually happens, when Zope dies during a request. You may trie to look at the error messages of the Zope process (standard output, standard error) and the ZServer log in "var/Z2.log". Maybe, this gives you a hint about this strange behaviour. Dieter

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importing text files
by joel grimes 30 Jun '00

30 Jun '00

I have a file object (a text file) in my project that is displayed in a dtml document. Is there a way to make that object dynamic, i.e. when a user changes the file (in notepad, or something) and saves it, those changes are reflected next time the dtml document is loaded. When I started the project I was operating under the assumption that a file object was a link to the object, not a static snapshot of it - silly me. Thanks, Joel Grimes ________________________________________________________________________ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com

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Multiple clicks: how to handle them?
by Hung Jung Lu 30 Jun '00

30 Jun '00

Hi, This must be a well-known problem: you click multiple times on a form button, and multiple requests are send to the server. On many websites they ask you not to click on the "confirm purchase" button twice, because otherwise you'll be charged twice. Of course, browsers are to blame for this fault. I can't believe Internet Explorer and Netscape are both faulty at this (on Windows platform), but that's the sad reality. (What the heck where these programmers thinking when they made the form requests non-blocking?!!) Anyway, how can one handle the problem from the server side? Session management is an obvious candidate. Every time you receive a request, you set a busy flag, and dump all the following requests, until the first request is properly finished. But this has two problems: (1) You'll see on your browser the response to your last request, not to your first request. (2) If you use RESPONSE.redirect(), your session is locked up. Of course I can go down into the transaction manager level of Zope and do things from there. But I'd like to know how other people handle the multiple click problem. Is there any easy way out?! regards, Hung Jung ________________________________________________________________________ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com

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(no subject)
by Hamish Lawson 30 Jun '00

30 Jun '00

Jim Hebert wrote: > Is there a reason you can't do this by just messing with the > namespaces stack, ie, adding additional folders to it? I had been latterly thinking this myself and set about trying to do it, but being new to Zope development, didn't have much success! I presume it involves modifying the folders PARENTS list, but I wasn't quite sure how to do that. Hamish Lawson ===== Hamish Lawson hamish_lawson(a)yahoo.co.uk ____________________________________________________________ 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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Programattically adding roles
by Timothy Grant 30 Jun '00

30 Jun '00

I know how to add users programatically, but I am having a difficult thing finding out how to add roles programatically. I have a list of user defined roles that I would like to add, but am unsure how to do it within DTML or an external method. Please note that I am *not* trying to assign roles to users here, I am just trying to add roles to the system. -- Stand Fast, tjg. Timothy Grant tjg(a)exceptionalminds.com Chief Technology Officer www.exceptionalminds.com Red Hat Certified Engineer (503) 246-3630 Avalon Technology Group, Inc. fax (503) 246-3124 >>>>>>>>>>>>Linux...Because crashing isn't normal<<<<<<<<<<<<<

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Re: [Zope] get 2 properties at the same time
by Rik Hoekstra 30 Jun '00

30 Jun '00

Hello, I need get 2 properties of Zclass at the same time. [rh]Unless I understand your question wrongly, this is going to be more easy then you think <td><select name="region"> <dtml-in "Locality.objectValues(['Locality']) "> (sidenote that this dtml-in is iterating the objects in Locality, not the properties) <option value="<dtml-var REGION>"><dtml-var title> </dtml-in> <option selected> </select></td> I need get another property, for example MASTER_REGION, in this moment. [rh]Just call it <dtml-var MASTER_REGION> (doesn't matter whether it's an object or a property - as defined in a ZCLass Propertysheet) If you want to do the same thing as with the Locality objects, just repeat your code here. If you want to do something else, you'll have to rephrase your question. hth Rik

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Re: Messing with the namespaces stack
by Hamish Lawson 30 Jun '00

30 Jun '00

Jim Hebert wrote: > But I wanted to be able to just write <dtml-var foo_png> while > working on > pages, so I wrap the content with > <dtml-with images> > <dtml-with "PARENTS[0]"> > ... > </dtml-with> > </dtml-with> Jim, that is indeed clever. Am I right, however, in thinking that every DTML method or DTML document that wants this additional-parent behaviour will need to use these <dtml-with> wrappers? I think what I'm after is the ability to alter the parents of the containing folder itself, so that any contained method automatically has this modified acquisition path. Hamish Lawson ____________________________________________________________ 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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Re: [Zope] Accesing a new context from a manipulated string
by Rik Hoekstra 30 Jun '00

30 Jun '00

>Here's my problem: > >given a method itemURL(), that typically returns a site >relative URL such as '/about/', I need to change to the >appropriate directories context using <dtml-with>. > >In short I need to do the equivalent of <dtml-with about>. > >The closest I've gotten so far is: > ><dtml-with expr="_.getitem(itemURL(), 0)"> > >which generates a KeyError: /about/ in the traceback. > >Can anyone help me truncate the extra '/'s off of this >string and pass it to the <dtml-with>? > This is going to be awkward in DTML, but it can be done. But there may be some different cases (all untested): simplest case '/about/' : <dtml-let strippedURL="itemURL()[1:-1]"> strippedURL -> 'about' more intricate case '/about/whatever/' <dtml-let strippedURL="itemURL()[1:-1]"> <dtml-let strippedURL="_.string.replace(strippedURL, '/', '.')"> strippedURL -> 'about.whatever' or, more convoluted <dtml-let strippedURL="_.string.replace(itemURL()[1:-1], '/', '.')"> if you're not certain if your itemURL has a starting and a trailing /, you will have to make this conditional. You're better off using a PythonMethod then. hth Rik

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Why can't I subclass a ZSQLMethod?
by Cary O'Brien 30 Jun '00

30 Jun '00

I want to wrap a presentation layer around ZSQLQueries, so that they will have methods to generate an input form [1] for the query, and generate tabular results if so desired. I tried to create a ZClass to do this, but I can't subclass from a ZSQLMethod. Any other ideas on how to do this (besides a class where you have to tell it the ZSQLMethod to use)? -- cary [1] Using sql.arguments_str to find out the arguments. Finding THAT was a struggle!

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