June 2001 - Zope - Zope lists

[DCOracle2] Problems iwth Insert
by Dario Lopez-K�sten 01 Jun '01

01 Jun '01

Product: DCOracle2 Alpha 6 against 8.1.7 Installation is synlinked into INSTANCE_HOME Browsing Database is OK Selecting from database is OK Inserting into dataase gives this error: Zope Error Zope has encountered an error while publishing this resource. Error Type: DatabaseError Error Value: (24374, 'ORA-24374: define not done before fetch or execute and fetch') This error is explained in the oracle docs: " ORA-24374: define not done before fetch or execute and fetch Cause: The application did not define output variables for data being fetched before issuing a fetch call or invoking a fetch by specifying a non-zero row count in an execute call. Action: Issue OCI define calls for the columns to be fetched. " Also: what is the retionale for returning None instead of Null for null values? Is it more pythonesque? Thanks. /dario - -------------------------------------------------------------------- Dario Lopez-Kästen Systems Developer Chalmers Univ. of Technology dario(a)ita.chalmers.se ICQ will yield no hits IT Systems & Services

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How to give caller acquisition path to an object through python script ?
by Gilles Lenfant 01 Jun '01

01 Jun '01

Hi, Sorry for the previous post. It was obscure. So I'm rewording it. I's not possible to expose my problem with a simple phrase. So I'll write down an example: I got a "main" DTML method that contains: -- DTML method "main" -- ... <dtml-var "getobject(somearg)"> ... --------------------------- "getobject" is a python script that finds a Zope object (DTML method or document) depending on "somearg". -- Python script "getobject" -- # find someobject depending on "somearg" ... return someobject(context) ----------------------------- The problem is that "someobject" renders using the acquisition path of the FOLDER that contains "main" I want the "someobject" to use the acquisition path of the "main" DTML object rather than the one of it's folder. Any clue ? TIA --Gilles

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problem with netscape & url encodings
by Alejandro Fernandez 01 Jun '01

01 Jun '01

Hi I have a page at barnton.gcal.ac.uk:8080/members/ where I build a call to a dtml object as so: <a href="Chapterlisting?chapterid=&dtml-intHqId;&HqName=<dtml-var Hq_Name>"><dtml-var Hq_Name> On ie, this sends you to the Chapterlisting dtml object, with the parameter sent url encoded, as "hq+name". On netscape, I just found out it sends it as "hq name" (without the +), causing a 400 error. Is there a function I can use to force this parameter to be url encoded? Thanks Ale -- Alejandro Fernandez Bscp 5 Caledonian University 0790 541 8809 - ale(a)nin.cx

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Re: [Zope] Equality test: if sequence-item = document id
by Garry Steedman 01 Jun '01

01 Jun '01

hi, i should explain: the code below is in a method nav_stuff which is called from standard_header which in turn is called from an arbitrary document. when i use the getId() method, zope throws an "excessive recursion" error. any suggestions? cheers, G On 1 Jun 2001, at 13:17, E. Seifert wrote: From: "E. Seifert" <e.seifert(a)gmx.net> To: <gs(a)styrax.com> Subject: Re: [Zope] Equality test: if sequence-item = document id Date sent: Fri, 1 Jun 2001 13:17:38 +0200 > Hi Garry, > > you wrote: > > i have the following code which works fine: > > > > <dtml-in "PARENTS[0].objectIds('DTML Document')"> > > <dtml-if expr="_['sequence-item']=='index_html'"> > > <li><dtml-var sequence-item> > > <dtml-else> > > </dtml-if> > > </dtml-in> > > > > but i would like to replace 'index_html' with the document's id > > variable, something like this: > > > > <dtml-in "PARENTS[0].objectIds('DTML Document')"> > > <dtml-if expr="_['sequence-item']=='this().id'"> > > <li><dtml-var sequence-item> > > <dtml-else> > > </dtml-if> > > </dtml-in> > > > > which of course doesn't work, but i'm not sure why or what i need > > instead! > > Did you try the getId() method? > > Regards > Eric +-------------------------------------------+ Garry Steedman mailto:gs@styrax.com Styrax Associates http://www.styrax.com/ "The Good Man has no shape." +-------------------------------------------+

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PIL+Zope: what's wrong with this code ?
by Jerome Alet 01 Jun '01

01 Jun '01

Hi, I plan to use PIL in an external method to retrieve Images from de ZODB and transform them to PIL Images. When I use the following code I've got an error which basically says: "Not enough image data" This seems to be a PIL error, not a Zope's one, but I really can't understand what the problem is, except that I don't know what mode parameter to pass to fromstring(), I've tried "1", "P", "RGB" etc... but without luck: --- CUT --- import PIL.Image # get the logo GIF Image from the ZODB # This object exists and is OK when viewed from the ZMI logo = getattr(self, "logo") imgdata = logo.data if type(imgdata) is not type('') : temp = '' while imgdata is not None : temp = temp + imgdata.data imgdata = imgdata.next imgdata = temp MyPILImage = PIL.Image.fromstring("1", (logo.width, logo.height), imgdata) --- CUT --- I'm really not sure about the two first parameters that the PIL.Image.fromstring() function need, the first one is the mode, the second is the size. Could someone with a PIL+Zope experience show me a code snippet to convert Zope Image objects (in any format) to PIL Images ? Thanks in advance. PS: I use Zope 2.3.2 and PIL 1.1.1 Jerome Alet - alet(a)unice.fr - http://cortex.unice.fr/~jerome Fac de Medecine de Nice http://wwwmed.unice.fr Tel: (+33) 4 93 37 76 30 Fax: (+33) 4 93 53 15 15 28 Avenue de Valombrose - 06107 NICE Cedex 2 - FRANCE

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RE: [Zope] PIL+Zope: what's wrong with this code ?
by Max Møller Rasmussen 01 Jun '01

01 Jun '01

> From: Jerome Alet [mailto:alet@unice.fr] > import PIL.Image > I'm really not sure about the two first parameters that the > PIL.Image.fromstring() function need, the first one is the mode, the > second is the size. What about something in these lines (untested)? logo = getattr(self, "logo") from StringIO import StringIO fromZope = StringIO() # tempfile in memory fromZope.write(logo.data) # save the data from Zope MyPILImage = PIL.Image.open(fromZope) fromZope.close() Then you ought to have it in "MyPILImage" regards Max M

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Equality test: if sequence-item = document id
by Garry Steedman 01 Jun '01

01 Jun '01

hello all, i have the following code which works fine: <dtml-in "PARENTS[0].objectIds('DTML Document')"> <dtml-if expr="_['sequence-item']=='index_html'"> <li><dtml-var sequence-item> <dtml-else> </dtml-if> </dtml-in> but i would like to replace 'index_html' with the document's id variable, something like this: <dtml-in "PARENTS[0].objectIds('DTML Document')"> <dtml-if expr="_['sequence-item']=='this().id'"> <li><dtml-var sequence-item> <dtml-else> </dtml-if> </dtml-in> which of course doesn't work, but i'm not sure why or what i need instead! any help much appreciated! Garry +-------------------------------------------+ Garry Steedman mailto:gs@styrax.com Styrax Associates http://www.styrax.com/ "The Good Man has no shape." +-------------------------------------------+

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RE: [Zope] Equality test: if sequence-item = document id
by Max Møller Rasmussen 01 Jun '01

01 Jun '01

> From: Tim Cook [mailto:twcook@iswt.com] > This works. It has something to do with resolving the string > representation of the object id. > I often use something that I've found that works. I don't > necessarily care why. Maybe someday? <vbg> > > <dtml-let this_id=id> > <dtml-in "PARENTS[0].objectIds('DTML Document')"> > <dtml-if expr="_['sequence-item']==this_id"> > <li><dtml-var sequence-item></li> > <dtml-else></dtml-if> > </dtml-in> > </dtml-let> I would say that it is because you take the ID's from 2 different namspaces. As soon as you go into a dtml-in another namespace gets popped onto the stack. When you set this_id outside th dtml-in you set it in the documents namespace. regards Max M

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Accessing the calling document's REQUEST?
by Philipp Robbel 01 Jun '01

01 Jun '01

Hi everybody, Does anyone know if it's possible to access the calling document's REQUEST? I have a dtml-document that calls another dtml-document (in a pop-up javascript window). In this javascript popup I want to refresh the parent window with the parent's original request. Can the javascript-openend dtml-document access the parent's (i.e. calling document's) REQUEST? If so, to refresh the parent window I could easily do the following code in the javascript window: <a href="DisplayStaff<dtml-var QUERY_STRING>">Click here to refresh</a> where the QUERY_STRING would come from the calling document's REQUEST. Is that possible in Zope? Thanks a lot in advance, Philipp

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Re: Possible: Saving and re-issuing the REQUEST?
by Philipp Robbel 01 Jun '01

01 Jun '01

Hi again, I have another idea :) Is it possible to access the calling document's REQUEST? After all, what pops up in the javascript window is another document. Can this document access the parent's (i.e. calling document's) REQUEST? If so, to refresh the parent window I could easily do the following code in the javascript window: <a href="DisplayStaff<dtml-var QUERY_STRING>"> where the QUERY_STRING would come from the calling document's REQUEST. Is that possible in Zope? Thanks a lot, Philipp

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