November 2000 - Zope

Re: [Zope] catalog DTML Document
by Dieter Maurer 07 Nov '00

07 Nov '00

Wolfgang Strobl writes: > I asked about how to perform this function (to spell it out again: > _adding_ a _DTML Document_) programmatically, i.e. via DTML, > of from Python code. ZCatalog.manage_catalogObjects(self, REQUEST, RESPONSE, URL1, urls=None) """ index all Zope objects that 'urls' point to """ You can use "ZopeFind" (--> ZQR) to "find" the objects and the "absolute_url" method to obtain the URL. Dieter

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Checking for ID's before creating ZClass
by Ivan Cornell 07 Nov '00

07 Nov '00

Hello from rainy England, In my constructor for a ZClass I want to auto generate an ID consisting of a name followed by a incrementing sequence (port0, port1, port2...). How do I check for all existing id's in a folder? I tried doing it in a PythonMethod (or whatever they are called now!), calling hasattr() but failed. Another possibilty would be to loop on a try..<createInObject>..raise until successful, but that doesn't seem very zopish. In the source code for createInObjectManager I can see it getting the folder, but can't figure how to acheive that directly, Ivan

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Re: XMLRPC accessing Zope DTML/SQL methods
by Red Pineseed 07 Nov '00

07 Nov '00

Since XML-RPC is already built into Zope, you do not need to work about that. You need however to write a java client to access your ZOPE method. There is information and a JAVA client on the xml-rpc site http://www.xmlrpc.com/. You can find enough info to start with. Philip > Message: 3 > From: "Mayers, Philip J" <p.mayers(a)ic.ac.uk> > To: "'zope(a)zope.org'" <zope(a)zope.org> > Subject: [Zope] XMLRPC accessing Zope DTML/SQL methods > Date: Tue, 7 Nov 2000 19:49:54 -0000 > charset="iso-8859-1" > > 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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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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