December 2005 - Zope

[ANN] jsonserver 1.1.pre2 released (AJAX)
by Balazs Ree 22 Dec '05

22 Dec '05

Jsonserver provides an alternative way of AJAX client-server communication on Zope. Jsonserver enables Zope to act as a JSON-RPC server. JSON-RPC is an XML-RPC replacement. It is built on JSON, a javascript based data interchange format. JSON has bindings for more languages. On the client side, the "jsolait" javascript library contains both JSON and JSON-RPC support, besides other utilities. Characteristics of this approach are: - You can bind methods in javascript to Zope methods, python scripts or page templates and call them up directly from javascript in a synchronous or asynchronous way (RPC). - Both the call parameters and the return value can be strings, unicode strings, instances of any other builtin python data type, or structures built with the combination of tuples, lists and dicts. These get marshalled transparently with JSON. - As a consequence there is no necessity to use XML to pass around structured data, you can just structure your data with python and pass it directly (but of course you also have the possibility to pass around XML). - Passing of both positional and keyword parameters allows to call up page templates with request parameters. - Full client compatibility with the Zope3 version of jsonserver, i.e. the same client code will be able to run on Zope2 and Zope3 without a change. This version, 1.1.pre2 is a pre-release and considered to be beta. It works pretty well but there are things that might need to change before the final release. It can be installed on Zope 2.7 and 2.8 (for 2.7 you need to install Five). It is compatible with Plone and can be used from it without restrictions. More information, a simple demo product and download at http://www.zope.org/Members/ree/jsonserver2 . Please report bugs directly to me. -- Balazs Ree, email: ree at ree.hu

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[ANN] jsonserver 1.1.pre2 released (AJAX)
by Balazs Ree 22 Dec '05

22 Dec '05

Jsonserver provides an alternative way of AJAX client-server communication on Zope. Jsonserver enables Zope to act as a JSON-RPC server. JSON-RPC is an XML-RPC replacement. It is built on JSON, a javascript based data interchange format. JSON has bindings for more languages. On the client side, the "jsolait" javascript library contains both JSON and JSON-RPC support, besides other utilities. Characteristics of this approach are: - You can bind methods in javascript to Zope methods, python scripts or page templates and call them up directly from javascript in a synchronous or asynchronous way (RPC). - Both the call parameters and the return value can be strings, unicode strings, instances of any other builtin python data type, or structures built with the combination of tuples, lists and dicts. These get marshalled transparently with JSON. - As a consequence there is no necessity to use XML to pass around structured data, you can just structure your data with python and pass it directly (but of course you also have the possibility to pass around XML). - Passing of both positional and keyword parameters allows to call up page templates with request parameters. - Full client compatibility with the Zope3 version of jsonserver, i.e. the same client code will be able to run on Zope2 and Zope3 without a change. This version, 1.1.pre2 is a pre-release and considered to be beta. It works pretty well but there are things that might need to change before the final release. -- Balazs Ree, ree at ree.hu

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zope object list from python
by Fabio 22 Dec '05

22 Dec '05

Hi! I need to get all SQL Methods defined in Zope from python script. How can I do? Thanks, Fabio -- Dott. Fabio Marcone 2T srl Telefono +39 - 0871- 540154 Fax +39 - 0871- 571594 Email fabio.marcone(a)duet.it Indirizzo Viale B. Croce 573, 66013 Chieti Scalo (CH)

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question for anyone using apache on windows
by michael nt milne 22 Dec '05

22 Dec '05

Does RewriteEngine work on Apache for Windows 2.0.5 ? I'm getting the following...... Syntax error on line 960 of C:/Program Files/Apache Group/Apache2/conf/httpd.con f: Invalid command 'RewriteEngine', perhaps mis-spelled or defined by a module not included in the server configuration Note the errors or messages above, and press the <ESC> key to exit. 22... NameVirtualHost ip:80 <VirtualHost ip:80> ServerName name RewriteEngine On RewriteRule ^/(.*) http://ip:8080/VirtualHostBase/http/name:80/site/Virt ualHostRoot/$1 [L,P] </VirtualHost>

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Re: [Zope] Zope Persistence (was: XML-RPC within ZOPE)
by Jan-Ole Esleben 22 Dec '05

22 Dec '05

It's not about the threads or processes being tied up and waiting, it's about the transaction breaking: because the internal call (the one from the second server back to the first) changes the object on the first server, and thus when the first server checks wether the object has changed after the transaction should close (during the last return), it finds that indeed it has, and before it could write to it, so it raises a conflict error invariably. Ole 2005/12/17, Chris McDonough <chrism(a)plope.com>: > > The problem setup is this; I explained it above, but it this has > > become a long thread: > > > > I write a ZOPE product. I want to make use of other software on the > > internet and the services that software provides. So I use the methods > > exposed by that software via SOAP, XML-RPC, whatever. > > > > One of those methods actually calls my product back, maybe because the > > developer has learned that my product itself exposes some (or all) of > > its functionality via XML-RPC. If this is all inside one call, which I > > can't avoid explicitly as the developer of just my product, I have a > > broken transaction on my hands that isn't easy to fix (and maybe > > impossible). This holds true for the whole product, even if the method > > called by the second server changed some completely unrelated data. > > I see what you're saying, but how is this specific to Zope? If you > write a Perl program and expose it via mod_perl on Apache, and the > program calls out to a service that calls back in to the mod_perl > program (no matter how broken of a pattern this was), wouldn't the > Apache process that was waiting on data be tied up in the same way? > > - C > >

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How to make good architecture in Zope2?
by Roman Suzi 21 Dec '05

21 Dec '05

Hi! This question is not about how to make a Zope2 product, but how to get most from separating concerns while making Web application in Zope2. Lets suppose that I've done OO Analysis and have a dozen of nice classes which model my problem domain. Lets also suppose that I did it on the basis of known use cases. Now I want to build Web application fulfilling those use cases but separate my classes from Zope framework (Ok, some of them could be taken from Zope framework, like user folder), so that I can see the problem domain abstractions in the clear, without a mess of miriads of Presentation injections. (I'd liked to put presentation-related things into other classes and ZPTs) Are there any good examples out there, or any good architectural solutions for that? Or is it even possible in Zope2 to go that far without doing to much adaptation? What I see in real world examples, is extensive use of mix-ins. Is it the only feasible way to at least textually separate Logic from Presentation? (What about delegation?) Is there any pattern which doesn't look strange in Zope2 while letting me do what I described above? Thank you in advance! Regards, Roman Suzi

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Zope/CMF developer required
by FAIRS, Dan, FM 21 Dec '05

21 Dec '05

Hi, The Royal Bank of Scotland is looking to recruit a contract developer to join the Corporate Markets Content Management System development team. The successful candidate will meet or exceed the following requirements: - 3 years experience developing with Python, Zope and the CMF - 3 years working with standards-compliant HTML and CSS - 1 year developing on and administering Red Hat Linux (preferably RHEL) and Apache - Demonstrable experience of working with and scaling high volume Zope sites - Understanding of the OSS model, with evidence of working with the community The following experience is also useful: - Development with Plone and Archetypes - Zope 3 development experience - JavaScript development experience - Experience with Subversion - Experience developing accessible web sites; in particular with UK DDA legislation and WAI standards - Exposure to test-first methodologies The successful candidate will be able to communicate with both technical and non-technical users, and will be expected to undertake tasks such as requirements gathering, coding, troubleshooting, and peer review. The role is based in Central London (UK) to start early 2006. Rate in the region of £370/day. If you are interested, please mail your CV/resume to me - dan.fairs(a)rbos.com. I shall aim to respond during January 2006. Cheers, Dan -- dan.fairs(a)rbos.com | FM IT | Royal Bank of Scotland plc *********************************************************************************** The Royal Bank of Scotland plc. Registered in Scotland No 90312. Registered Office: 36 St Andrew Square, Edinburgh EH2 2YB. Authorised and regulated by the Financial Services Authority This e-mail message is confidential and for use by the addressee only. If the message is received by anyone other than the addressee, please return the message to the sender by replying to it and then delete the message from your computer. Internet e-mails are not necessarily secure. The Royal Bank of Scotland plc does not accept responsibility for changes made to this message after it was sent. Whilst all reasonable care has been taken to avoid the transmission of viruses, it is the responsibility of the recipient to ensure that the onward transmission, opening or use of this message and any attachments will not adversely affect its systems or data. No responsibility is accepted by The Royal Bank of Scotland plc in this regard and the recipient should carry out such virus and other checks as it considers appropriate. Visit our websites at: http://www.rbs.co.uk/CBFM http://www.rbsmarkets.com ********************************************************************************

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Re: [Zope] zope and LDAP for authorisation
by Marinussen, M.J. (Ria) 21 Dec '05

21 Dec '05

Hi Jens, you were right, there was a problem with the way I configured the added attribute in the LDAP Schema tab.. a stupid problem actually. When you add an attribute that does not exist in LDAP and want to use that as a login name attribute, it obviously does not work and zope simply returns "unauthorized". When you add "samAccountName" for the login ID user in Windows Active directory (and LDAP), and you try to login with the wrong password (or non-existing username) zope returns "unauthorized". So far so good. But when you add "samAccountName" for the login ID user in Windows Active directory (and LDAP), and you try to login with a correct username/password combination, zope returns "TypeError len() of unsized object" And when you use the right case in "sAMAccountName" you can login without errors. So my login problem is solved. I was only confused because it "seemed" that the attribute was working when it was not... Thanks for your support. Ria > > Message: 9 > Date: Mon, 19 Dec 2005 14:12:03 +0000 > From: Jens Vagelpohl <jens(a)dataflake.org> > Subject: Re: [Zope] zope and LDAP for authorisation > To: Zope Zope list <zope(a)zope.org> > Message-ID: <F65164AD-565F-4902-A373-B914A67C5280(a)dataflake.org> > Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed > > > On 19 Dec 2005, at 13:59, Marinussen, M.J. (Ria) wrote: > > > Hi Jens, > > > > > >> > >> I need the full error traceback to help. > >> > > > > The full traceback on: > > Zope 2.7.2-0, python 2.3.5, win32 > > LDAPUserFolder 2.6 > > OpenLDAP 2.3.11 > > > > When I type the correct LDAP password I get this error and traceback > > (otherwise I get an "Unauthorized" error). > > Looking at the code this looks like it is a misconfiguration on your > part. It looks like the attribute you use as the login attribute has > not been added to the attributes shown on the LDAP Schema tab in the > ZMI. > > jens >

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zope db question
by José Carlos Senciales Chaves 21 Dec '05

21 Dec '05

Hi I am new phyton and zope programmer. I have to make a product for zope and i must use a list of groups with a lot of data. I´m wondering if i must to use a list of persistent objects or if it´s better use a database like gadfly with tables or another one. I´m a little confuse. I think that the two solutions are possible but i don´t know whitch is better. sorry for my bad english. thanks. jose from Spain, Europe.

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a binary of zope for debian
by adeline nombre 21 Dec '05

21 Dec '05

Hi. it's me again. I'm in trouble. Can somebody tell me where to fin a binary of zope for debian which can be run with python2.3. ? thank you very much --------------------------------- Nouveau : téléphonez moins cher avec Yahoo! Messenger ! Découvez les tarifs exceptionnels pour appeler la France et l'international.Téléchargez la version beta.

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