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absolute urls
by Ragnar Beer 10 Feb '00

10 Feb '00

Hi everyone! In the robots and spiders tip it says: "... but its probably better to specify absolute URLs." I wonder if there is a way in zope to specify absolute urls but still be able to transfer a whole branch of the website using copy/cut and paste without messing up the links. Anybody done that? Ragnar

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Python Method
by Pedro Silva 10 Feb '00

10 Feb '00

Hi, Did anyone tryed to work with Python Method, a Zope Product? If yes, please answer me this question: Did this Python have access to the filesystem or I have to write some code first to then, have access to the filesystem? Please answer me to: psilva(a)ruido-visual.pt Thanks, Pedro

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Re: [Zope] PIL/Photo Product win32 installation?
by Andrew Lahser 10 Feb '00

10 Feb '00

Darran Edmundson <dee124(a)rsphy1.anu.edu.au> said: > > I just read a slew of month-old posts on EGroups about > my exact question ... but to no avail. I installed > PIL in the $(ZopeDir)/lib/python/Products/Photo directory. On WinNT I have PIL installed in lib/python/PIL I have the _imaging.dll and other PIL .dll files copied into this directory. Also, from the python Win32 binary distribution, I have copied the following .dll files into my PIL directory. tcl80.lib tcl80.dll tchsh80.exe tclpip80.dll tk80.lib wish80.exe tk80.dll Be sure that the PIL _tkinter.dll file is also included in your PIL directory. Admittedly, Photo doesn't use tcl/tk for anything, but I don't want the trouble of compiling PIL from source on WinNT. Call me lazy. If you want, I can zip up my PIL directory and send it to you privately. I had considered packaging PIL with Photo, but PIL has a couple of shortcomings. Presently, I am strongly leaning towards integrating Photo with Imagemagick. So far, no one has objected. > If I leave PIL's default __init__.py (empty) then the > Photo Product is not "broken" but creating a Photo > instance dies with "Attribute error - Image" in photo.py. This is because PIL does not come as a python package by default. When importing PIL into Zope, python raises a name error because the PIL Image object conflicts with the Zope Image object. > If I instead follow the instructions and copy the __init__.py > distributed with the Photo Product in the install_PIL > subdirectory then the product is broken with the previously > reported "_imaging" dll error. PIL works fine with my non-Zope > python so its got to be a configuration error. Help from > one of the many who have faced this problem (and conquered > it) is much appreciated. > > Cheers, > Darran. > Cheers, Drew

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DTML Container?
by Alexandre Ratti 10 Feb '00

10 Feb '00

Hello, I think you can also render the body with: <dtml-var "_.render(this())">. I know this looks kludgy, but it worked for me and you don't need to handle an external method. I included below a mail I sent when I came across this solution. Cheers. Alexandre At 12:00 08/02/2000 -0800, you wrote: >Look at Kevin Dangoor's KM|NetNews Product for a nice take on this. The >outline >of the solution is to define a method 'index_html' within your ZClass (not >inside each instance!). This method "stitches together" the properties of the >object to present its "default view". > >The key problem is to get the "body" property to be rendered using the DTML >engine, but filled out using the properties of the main object. Here is a >Python ExternalMethod (add it to the ZClass) which does the trick:: > > from DocumentTemplate import HTML > > def render_dtml( self, string_property ): > """ > """ > return HTML( string_property, self.__dict__ )() > >You can then use this within the ZClass' instance_html as: > > <dtml-var "render_dtml( body )"> [Archive email dated December 1999] >I eventually found a solution for the problem described below. > >Summary: I have a ZClass that subclasses DTMLDocument. In the ZClass >product folder, I have an index_html method that provides a default view >for ZClass instances. I want this method to display both property values >and the text content of the ZClass instance. > >To display the text content, if I use <dtml-var raw>, the text is >displayed in unrendered form. Text and HTML code are OK but nested DTML is >not interpreted. To display the text content in rendered form, I need to >use <dtml-var "_.render(this())">. > >Example code for index_html: > ><dtml-var standard_html_header> > <H2 align="center"><dtml-var title_or_id></H2> > ><P><EM><dtml-var myDateProperty></EM><BR> ><dtml-var myDescriptionProperty></P> > > <dtml-var "_.render(this())"> ><dtml-var standard_html_footer>

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Zope source code example
by cesare＠planningsrl.it 10 Feb '00

10 Feb '00

Hi all! Is there any site on which I can see (or download) the zope source code of real examples, as the Zope documentation is not as good as Zope is. TIA, Cesare Cesare Raoss Planning srl Via Bolzano 45 38014 Gardolo (TN) cesare(a)planningsrl.it http://www.planningsrl.it

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PIL/Photo Product win32 installation?
by Darran Edmundson 10 Feb '00

10 Feb '00

I just read a slew of month-old posts on EGroups about my exact question ... but to no avail. I installed PIL in the $(ZopeDir)/lib/python/Products/Photo directory. If I leave PIL's default __init__.py (empty) then the Photo Product is not "broken" but creating a Photo instance dies with "Attribute error - Image" in photo.py. If I instead follow the instructions and copy the __init__.py distributed with the Photo Product in the install_PIL subdirectory then the product is broken with the previously reported "_imaging" dll error. PIL works fine with my non-Zope python so its got to be a configuration error. Help from one of the many who have faced this problem (and conquered it) is much appreciated. Cheers, Darran.

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Re: [Zope] Object ID and Property confusion
by Alexandre Ratti 10 Feb '00

10 Feb '00

Hello, At 09:36 09/02/2000 -0800, you wrote: >I did try an awful lot of variants of this kind of thing, and it works fine >if you're scanning through lists of native objects like Folders, or DTML >Methods. (or at least, the 'id' part works - Folders don't have a 'myProp' >property, of course) > >Unfortunately, it doesn't work for ZClass instances -- for some reason, the >id property doesn't get returned in quite the same way from objectValues() >or objectItems(), and you end up with a list like this (which you also get >if you use <dtml-var "_.str(_['sequence-var-id'])">); > ><string> -- MyPropValue1<br> ><string> -- MyPropValue2<br> I don't think this is normal behavior. This may be related to the "ZClass ID bug". You may want to take a look at this doc: <http://www.zope.org/Members/AlexR/ZClassIDBug>. Cheers. Alexandre

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Zope and python -O
by Jerome ALET 10 Feb '00

10 Feb '00

Hi, I wondered why the default installation of Zope doesn't use the -O option on the python command line in order to produce .pyo objects instead of .pyc ones ? aren't .pyo programs supposed to be "optimized" (and maybe run faster) versus "non-optimized" .pyc ? are .pyo really faster than .pyc ? what are the drawbacks ? please enlighten me. thanks. bye, Jerome ALET - alet(a)unice.fr - http://cortex.unice.fr/~jerome Faculte de Medecine de Nice - http://noe.unice.fr - Tel: 04 93 37 76 30 28 Avenue de Valombrose - 06107 NICE Cedex 2 - FRANCE

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Re: [Zope] Is e-commerce feasible with Zope?
by Diego Dainese 10 Feb '00

10 Feb '00

On Mon, 7 Feb 2000 12:46:33 -0500 "Kevin Dangoor" <kid(a)kendermedia.com> wrote: > ----- Original Message ----- > From: "Diego Dainese" <xdsi(a)xddainese.unive.it> > To: <zope(a)zope.org> > Sent: Monday, February 07, 2000 8:51 AM > Subject: [Zope] Is e-commerce feasible with Zope? > > > > The script will add the product to a shopping basket; later the > > customer can proceed to the checkout. Here she/he will be able to > > create an account on our site for later shopping. > > > > What I need is: > > > > - A means to implement the basket; with Apache+PHP I would use a > > simple file containing a list of product codes, or an SQL table. > > > > - A means to set a cookie on the client browser and to associate the > > it with a basket; with Apache+PHP I would use a SQL relation > > cookie->basket, or I would put in relation the basket filename with > > the cookie. > > I have implemented something like this for byproducts.com. I'm storing the > carts in the ZODB. This is not desirable if your site is very busy, though, > because there can be issues if you have lots of concurrent writes going on. > (Note that, from what I've read in previous threads, I would have to have 5 > people create new shopping carts at the same instant in order for one of > them to run into an error. That's a lot. When I said that the site would > have to be very busy, I meant *very*.) > But are the Digital Creations guys aware of this problem, and thinking to a solution? In the short term I don't foresee a lot of traffic on my site, and I hope that in the long term the problem with ZODB will be fixed. However there's another thing that concern me on the ZODB based solution; from on the ZODB vs SQL HOWTO: "If the data is going to be frequently changing, then it's not a good idea to put it in the ZODB. Every time the data changes, a new record will be appended to the Data.fs file - this could become a problem very quickly." Is this still true? > There are two Zope products, FSSession and SQLSession which should handle > these things quite easily for you. > OK, I'm sure one of these will solve the problem. > > - A means to store the products database; with Apache+PHP I would use > > a simple SQL DBMS. > > You could store the products database in the ZODB or in a SQL DB. Which one > you use will probably depend on what you want to do with it, and how updates > are made to it. For example, if you were going to be doing something like > reloading the entire DB every hour (not likely, but just in case you were), > you would not want to use the ZODB with the FileSystem storage, because your > Data.fs file will grow quickly and need frequent packing. > > Zope makes it easy to go either way on this one. > I don't think the data will change so often; probably ZODB is the right solution for this. > > - A means to store customer informations on the site; with Apache+PHP > > I would use another SQL table, with a relation one to many to store > > the (possibly) many customer's addresses. > > Again, you can use SQL if you want. There's a whole bunch of work going on > right now to create new User objects in Zope. These will make it possible to > attach all sorts of things to users and will be a really nice > abstraction. I'm very interested in these new user objects: where can I find more info on this subject? > Personally, I prefer to work with the ZODB wherever possible. I just > generally prefer objects to the relational model. > I prefer it too when possible. Another concern with ZODB is the max DB size: on Linux based system with the ext2 file-system and the kernel patch, the max file size is 4 GB; since the Zope DB is stored into a single file (right?), this mean that the max DB size is 4 GB. The solution I had in mind to store customer's account is a folder containing one instance of a custom ZClass to store general user information and one ore more instances of another custom ZClass to store address informations (do you known better solutions?). But a quick test has revealed me that with this system, a user account will take about 2 kByte; with a max DB size of 4 GB this lead to max 2.000.000 users; this is for sure a big number, but if you consider the probable big number of dummy registrations, I think it's not unreachable. Is this analysis correct? > > - I would let the site to be accessed both via https and http. > > There was recently a ZServer version announced with support for SSL. > Otherwise, I think people are just using Apache with fastcgi. > Glad to hear this! > > - The site must be easily internationalized, thus I must be able to > > replace all the text in the pages with a translated version; with > > Apache+PHP I would use an include file where to store the text > > messages as PHP constants. > > There is a Zope Internationalization Project (ZIP), though I think that has > focused on adding more internationalization to Zope's core. For your own > apps, I would think there are a number of ways to implement this. > Acquisition is your friend. You'll probably use acqusition to make life easy > for you. > OK; the solution I have in mind is to store the page's text into the folder's proprieties, but I am wondering if there is a coolest solution. Thank you for the reply, bye -- Diego | To reply remove the `x' and swap the | Sorry for my Dainese | words around the `@' in the address. | bad English.

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Informix
by Milos Prudek 10 Feb '00

10 Feb '00

I'd like to access Informix server from Zope. Is there a database adapter available? If not, how can I use informixdb-1.3 in conjunction with Informix's ESQL/C to integrate Informix support into Zope? -- Milos Prudek

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