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XMLRPC accessing Zope DTML/SQL methods
by Mayers, Philip J 07 Nov '00

07 Nov '00

I'm planning on using Zope as some middleware to an SQL database backend. Zope will implement the per-row ACL checking and such for the database application, and there are two clients - a simple web-based Zope frontend, and a larger standalone Java application. I'd like the Java app to communicate with Zope using XMLRPC, so that I can re-use the middleware portion, and take advantage of SSL'd HTTP, along with all the other bonuses such as not trusting the client :o) But: I'm having problems that indicate I don't understand how External Methods or the XMLRPC call support works. I have an SQL query method backed by a persistent DB connection. I want to call that method over XMLRPC remotely. How do I do that? Namely, how do I pass named arguments to the SQL method? Also, I did some simple External Method examples, and acquisition doesn't seem to work as advertised: This: def testf(self, REQUEST): return self.index_html() Gives an error "standard_html_header not found". What's going on? Regards, Phil +----------------------------------+ | Phil Mayers, Network Support | | Centre for Computing Services | | Imperial College | +----------------------------------+

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Persistence triggering
by Max M 07 Nov '00

07 Nov '00

When appending to a list in Zope In a persistent class I cannot just do: self.list.append(item) As it will not trigger the persistence mechanism. I can treat it like an imutable, but that is rather tedious: _list = self.list _list.append(item) self.list = _list But can I also do? self.list = self.list + [item] Regards Max M Max M. W. Rasmussen, Denmark. New Media Director private: maxmcorp(a)worldonline.dk work: maxm(a)normik.dk ----------------------------------------------------- Specialization is for insects. - Robert A. Heinlein

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[Ann] PathHandler 0.9.0 Released!
by Chris Withers 07 Nov '00

07 Nov '00

The Path Handler product lets you handle URLs which don't correspond to objects. For example, if 'ph' is a Path Handler, then, in the following URL: http://a.server/ph/1/2/3/4 1, 2, 3 and 4 don't have to be Zope objects, and the '/1/2/3/4' part of the URL will be handled by the method specified in the Path Handler. The Product download and more information can be found at: http://www.zope.org/Members/NIP/PathHandler cheers, Chris

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Can't access management page.
by Joel Janosky 07 Nov '00

07 Nov '00

I have a small internal site I have been running for about a year. Starting today, when I browse to the base /manage page, I get the normal tree display in the left hand pane. The right hand pane, however, displays the base page in its presentation form rather than showing the list of objects in the base folder. Any ideas on what may have been changed to cause this behavior ?? Any ideas on how to get it back to normal?? Thanks for the help. Joel jjanosky(a)freeasyst.com

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CGI
by Nicholas Lo 07 Nov '00

07 Nov '00

Hi, My problem here seems obvious, but I really dont know how to solve it. I want to use some of my old CGI programs and I dont have much time to convert them into Zope. Does anyone know how to pass a request to a CGI program and get the results back in Zope? I know client.py may be useful, but it further worsen the fork tax CGI would pay. Thanks -- Nick

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variable length forms...
by zope 07 Nov '00

07 Nov '00

Hi. I have tried to implement a variable length form. Yes, I have read http://www.zope.org/Members/jpenny/variable_length_forms/index_html.! I a form, I'm using following form fields: <dtml-in "_.range(1, _.string.atoi(form_numpages)+1, 1)"> <tr align="center" valign="middle"> <td><dtml-var sequence-number></td> <td><input type="text" name="form_time_out" size="6" maxlength="4"></td> <td><input type="radio" name="radiob<dtml-var sequence-number>"></td> <td><input type="radio" name="radiob<dtml-var sequence-number>"></td> </tr> </dtml-in> where form_numpages is a variable that i got from a previous form. This form works fine and generates me form_numpages lines with always one textfield and a group of 2 radiobuttons named per line. form_time_out radiob1 radiob1 form_time_out radiob2 radiob2 form_time_out radiob3 radiob3 ... The contents of this form is submitted and I want to interpret the data with following method: 1: <dtml-in "_.range(1, _.string.atoi(form_numpages)+1, 1)"> 2: <dtml-var sequence-number>: 3: <dtml-var "_['radiob'+_['sequence-number']]"> 4: </dtml-in> This returns the following Zope error: Error Type: TypeError Error Value: illegal argument type for built-in operation If I'm replacing the third line with <dtml-var "_['sequence-number']">, the sequence-number is printed out. So I'm sure that it exits. How can I get the contents of radiob1, radiob2, radiob3, ... Thanks a lot for your help! Marc Ludwig

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Stupid Question but...
by Julian 07 Nov '00

07 Nov '00

Hi! I'm a new user and I sort of successfully installed the program on my stand-alone computer. But now I'm wondering how do I install the program on a webserver. Actually, I would like to ask for example, I would like to use the KnowledgeKit developed by Bill on my webserver, do I need to install the Zope main program? If yes, how do I go about it? Thank you. Julian

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RE: [Zope] Your thoughts about Zope-based database apps
by Eric Walstad 07 Nov '00

07 Nov '00

Hi Alonso, FYI, some of the list members have great difficulty in reading HTML formatted messages. It's best if you set your format to "Plain Text" before submitting to the list. I haven't yet implemented what you are considering, but I am interested in doing so soon. So, I am very interested in what you discover. If you don't mind, if/when you receive any emails that don't get CC'd to the Zope mailing list, please forward them on to me, too. I am an Access programmer and have a bit of experience with MySQL. I've given a lot of thought about how one would handle an Access-like interface with Zope and MySQL over the web. I'm anticipating a lot more development time building the interface, but saving a bunch of time by not having to keep multiple copies of the same DB up to date. If you feel like brainstorming on the "whats" and "hows" of such an application, I'ld love to join in. Thanks, Eric. 2. In particular, what would be the best way to implement the inserting and updating of records along with input data validation? (Retrieving data from a database to show on a web page using Zope is straightforward as you know.) I have a set of java script functions that I use for form field validation. I like this approach because it puts the burden on the client. However, there are Zope products available that handle it on the server side. Search Zope.org for "Smarter Forms" 3. In several cases I'd like to implement a main form/subform, where the subform allows the user to enter several items related to only one record in the main form. Since every item might have many fields (say 20) I'd like to present just the most important fields on a table, and allow the user to view/enter/update all the fields for each item in a different web page. Those of you familiar with Microsoft Access know that in Access it is straightforward to implement this main form/subform interface. I wonder what would be the best way of implementing this using Zope? Using Zope to mimic a form / subform combination means that Zope will have to generate a the input form and subform elements together before they get sent to the user. The user will then update the data sent by Zope. When the form is submitted, Zope will have to update the main form data, then iterate thru the subform elements, modifying the subform data with each iteration. If records are to be added, it will require a client server transaction for each record added (unless something is done with javascript, where the form is generated dynamically. Then, the user could add many records and when the dynamically built form is submitted, Zope will have to figure out how many records the user added). 4. Do you know of any existing Zope-based app similar to this?. Obviously, the back-end doesn't have to be MySQL. I haven't seen any yet, but I'm sure they're out there!

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RE: [Zope] images in directories
by Pete Prodoehl 07 Nov '00

07 Nov '00

I was sort of hoping it would be easier. It would be ideal to have this: <dtml-with images><dtml-var image.gif></dtml-with> boiled down to one simple tag that works when I store images in a subfolder *and* use file extensions. But from what I've read so far, it can't be done... Someone suggested the following: <dtml-var "images.getitem('image.gif',1)"> but that didn't work for some reason, and still seems a little complex for just inserting an image. Pete > ---------- > Subject: Re: [Zope] images in directories > > hi, > > Sure they are. If you ftp a jpg to the server it comes up with an id of > bla.jpg, you can then refrence it in html just like you would on an Apache > server or whaterver <img src="../../bla.jpg"> > >

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uploading to Zope with Mac Browser
by rlanham＠speakeasy.net 07 Nov '00

07 Nov '00

Zope list: This zope method for uploading images to server: <dtml-call expr="manage_addImage( id=title, file=file, title=title)"> ...works great from a PC. But from a Mac (netscape And IE) it does not work. Sometime a file is uploaded, but it is garbage. Apparently the Mac browsers have a totally different way of packaging data from an <input type=file> element. Does anyone on this list know how to deal with this? Is there a Zope product? Thanks in advance for any help with this fundamental problem using Zope. Richard

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