Zope May 2007

zope@zope.dev

55 participants
49 discussions

SQLAlchemy 0.2 released - a generic database adapter for Zope 2
by Andreas Jung 07 May '07

07 May '07

I am pleased to announce the first public release of SQLAlchemyDA V 0.2.0 Download: --------- <http://opensource.zopyx.com/software/sqlalchemyda/releases/0.2.0> What is SQLAlchemyDA? --------------------- SQLAlchemyDA is both a tiny frontend to the z3c.sqlalchemy SQLAlchemy package for Zope 2 and Zope 3. In addition it acts as a database adapter for ZSQL methods. Since it is based on SQLAlchemy, SQLAlchemy supports all databases out-of-the box that are supported by SQLAlchemy. Requirements: ------------- - Zope 2.8 + - SQLAlchemy 0.3.X - z3c.sqlalchemy 1.0.0 + Installation: ------------- - download and install z3c.sqlalchemy as egg or from the sources from Cheeseshop (easy_install z3c.sqlalchemy) - A z3c.sqlAlchemy SAWrapper must be registered. The best way to do this right now to put something like this into your Product's initialize(): Products/YourProduct/__init__.py: def initialize(context): from z3c.sqlalchemy import createSAWrapper, registerSAWrapper wrapper = createSAWrapper('postgres://user:password@host/database', forZope=True) registerSAWrapper(wrapper, 'my-sa-wrapper') - After restarting Zope you go to the ZMI and create an instance of "SQLAlchemy Wrapper Integration" (as you would create some DA instance). After creating the instance you should see 'my-sa-wrapper' in the properties form of the new instance. When creating a new ZSQL method you should be able to use this DA instance as connection id. Using SQLAlchemyDA: ------------------- - for using SQLAlchemyDA through object mappers as used in SQLAlchemy you can use the getMapper() and getMappers() methods. Check the z3c.sqlchemy documentation for details. A SQLAlchemy Session object can be obtained by the getSession() method. Sessions are integrated with Zope 2 transaction management. - a SQLAlchemyDA instance can be used as a standard DA together with ZSQL methods. WARNING: YOU SHOULD NOT USE ZSQL METHODS AND MAPPERS WITHIN THE SAME REQUEST!!! Mappers/Sessions and Connections (for ZSQL methods) are totally independent and have their own transaction. Mixing both would result in two distinct transactions leading to unpredictable results. License ======= SQLAlchemyDA is licensed under the Zope Public License 2.1. See LICENSE.txt. Andreas Jung -- ZOPYX Ltd. & Co. KG - Charlottenstr. 37/1 - 72070 Tübingen - Germany Web: www.zopyx.com - Email: info(a)zopyx.com - Phone +49 - 7071 - 793376 Registergericht: Amtsgericht Stuttgart, Handelsregister A 381535 Geschäftsführer/Gesellschafter: ZOPYX Limited, Birmingham, UK ------------------------------------------------------------------------ E-Publishing, Python, Zope & Plone development, Consulting

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Zope Tutorial not present in Add List
by Craig Pettersen 07 May '07

07 May '07

Hi, I've just installed Zope on Windows XP (Zope 2.10.3-final, python 2.4.4, win32). According to the Zope Book (see quote below) there should be an option for me to choose 'Zope Tutorial' from the add list of the root Folder. The only problem is that 'Zope Tutorial' doesn't exist in my installation's add list. What could be wrong? ===== " Zope comes with a built-in tutorial which reinforces some of the concepts you've learned here. As an extension of this book, we recommend that you run the tutorial to get a feel for using basic Zope objects (particularly DTML objects). To use the tutorial properly, your browser should support *JavaScript *and *cookies *. To launch the tutorial, navigate to the root folder and add a Zope Tutorial object by selecting *Zope Tutorial *from the add list. When the add form asks for an "id" for the object, give it the id *tutorial *and click "Add". " =====

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Re: Upgrade woes: BTreeFolder --> BTreeFolder2
by Ken Ara 06 May '07

06 May '07

Also unable to delete using zopectl debug, but is there an additional clue at the end of this traceback? : >>> app.OrgDocumentLibrary.manage_delObjects(['Documents']) 2007-05-05 07:37:17 WARNING OFS.Uninstalled Could not import class 'BTree' from module 'BTree' Traceback (most recent call last): File "<stdin>", line 1, in ? File "/usr/local/zope/lib/python/OFS/ObjectManager.py", line 524, in manage_delObjects self._delObject(id) File "/usr/local/zope/lib/python/OFS/ObjectManager.py", line 379, in _delObject notify(ObjectWillBeRemovedEvent(ob, self, id)) File "/usr/local/zope/lib/python/zope/event/__init__.py", line 23, in notify subscriber(event) File "/usr/local/zope/lib/python/zope/component/event.py", line 26, in dispatch for ignored in zope.component.subscribers(event, None): File "/usr/local/zope/lib/python/zope/component/_api.py", line 130, in subscribers return sitemanager.subscribers(objects, interface) File "/usr/local/zope/lib/python/zope/component/registry.py", line 290, in subscribers return self.adapters.subscribers(objects, provided) File "/usr/local/zope/lib/python/zope/interface/adapter.py", line 535, in subscribers subscription(*objects) File "/usr/local/zope/lib/python/zope/component/event.py", line 33, in objectEventNotify adapters = zope.component.subscribers((event.object, event), None) File "/usr/local/zope/lib/python/zope/component/_api.py", line 130, in subscribers return sitemanager.subscribers(objects, interface) File "/usr/local/zope/lib/python/zope/component/registry.py", line 290, in subscribers return self.adapters.subscribers(objects, provided) File "/usr/local/zope/lib/python/zope/interface/adapter.py", line 535, in subscribers subscription(*objects) File "/usr/local/zope/lib/python/OFS/subscribers.py", line 108, in dispatchObjectWillBeMovedEvent dispatchToSublocations(ob, event) File "/usr/local/zope/lib/python/zope/app/container/contained.py", line 181, in dispatchToSublocations for sub in subs.sublocations(): File "/usr/local/zope/lib/python/OFS/subscribers.py", line 88, in sublocations for ob in self.container.objectValues(): File "/usr/local/zope/lib/python/Products/BTreeFolder2/BTreeFolder2.py", line 368, in objectValues return LazyMap(self._getOb, self.objectIds(spec)) File "/usr/local/zope/lib/python/Products/BTreeFolder2/BTreeFolder2.py", line 347, in objectIds spec = mti.keys() #all meta types AttributeError: 'NoneType' object has no attribute 'keys' Is the problem with the contained objects? Here's what happens when I try to list them: >>> for o in app.OrgDocumentLibrary.Documents.objectIds(): ... print o ... 2007-05-05 07:47:08 WARNING OFS.Uninstalled Could not import class 'BTree' from module 'BTree' Traceback (most recent call last): File "<stdin>", line 1, in ? File "/usr/local/zope/lib/python/Products/BTreeFolder2/BTreeFolder2.py", line 347, in objectIds spec = mti.keys() #all meta types AttributeError: 'NoneType' object has no attribute 'keys' Thanks -Ken --- Laurence Rowe wrote: > > Try deleting them with del from python (eg from zopectl debug) rather > than through the ZMI. > > Laurence > > Ken Ara wrote: > > I have a couple of outstanding issues following an > > otherwise successful upgrade from Zope 2.7.4 to > > 2.10.3-final. > > > > One key application used the old DocumentLibrary > > product > > (http://www.zope.org/Members/Kaivo/DocumentLibrary). I > > have since reimplemented most of the functionality and > > migrated out the content, but I am unable to delete > > the old instances of the 'DocumentStore' class. This > > class is based on the old BTreeFolder which, as far as > > I can tell, cannot be be used in current versions of > > Zope. > > > > Starting Zope with the old BTreeFolder fails: > > > > Traceback (most recent call last): > > File > > "/usr/local/zope/lib/python/OFS/Application.py", line > > 703, in import_product > > product=__import__(pname, global_dict, > > global_dict, silly) > > File > > "/usr/local/zope/client0/Products/BTreeFolder/__init__.py", > > line 89, in ? > > import BTreeFolder > > File > > "/usr/local/zope/client0/Products/BTreeFolder/BTreeFolder.py", > > line 91, in ? > > from BTree import BTree > > ImportError: No module named BTree > > > > Swapping in BTreeFolder2 allowed me to access existing > > instances of DocumentLibrary, however attempting to > > delete the old instances of DocumentStore fails with > > the following error: > > > > Traceback (innermost last): > > Module ZPublisher.Publish, line 119, in publish > > Module ZPublisher.mapply, line 88, in mapply > > Module ZPublisher.Publish, line 42, in call_object > > Module OFS.ObjectManager, line 524, in > > manage_delObjects > > Module OFS.ObjectManager, line 379, in _delObject > > Module zope.event, line 23, in notify > > Module zope.component.event, line 26, in dispatch > > Module zope.component._api, line 130, in subscribers > > Module zope.component.registry, line 290, in > > subscribers > > Module zope.interface.adapter, line 535, in > > subscribers > > Module zope.component.event, line 33, in > > objectEventNotify > > Module zope.component._api, line 130, in subscribers > > Module zope.component.registry, line 290, in > > subscribers > > Module zope.interface.adapter, line 535, in > > subscribers > > Module OFS.subscribers, line 108, in > > dispatchObjectWillBeMovedEvent > > Module zope.app.container.contained, line 181, in > > dispatchToSublocations > > Module OFS.subscribers, line 88, in sublocations > > Module Products.BTreeFolder2.BTreeFolder2, line 368, > > in objectValues > > Module Products.BTreeFolder2.BTreeFolder2, line 347, > > in objectIds > > AttributeError: 'NoneType' object has no attribute > > 'keys' > > > > If I could install the original BTreeFolder in Zope > > 2.10.3 - if only briefly - would that enable me to > > delete the old instances? Other ideas? > > > > Thanks, > > Ken > > > > __________________________________________________ > > Do You Yahoo!? > > Tired of spam? Yahoo! Mail has the best spam protection around > > http://mail.yahoo.com > > _______________________________________________ > > Zope maillist - Zope@... > > http://mail.zope.org/mailman/listinfo/zope > > ** No cross posts or HTML encoding! ** > > (Related lists - > > http://mail.zope.org/mailman/listinfo/zope-announce > > http://mail.zope.org/mailman/listinfo/zope-dev ) > > > > _______________________________________________ > Zope maillist - Zope@... > http://mail.zope.org/mailman/listinfo/zope > ** No cross posts or HTML encoding! ** > (Related lists - > http://mail.zope.org/mailman/listinfo/zope-announce > http://mail.zope.org/mailman/listinfo/zope-dev ) > __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

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z3c.sqlalchemy 1.0.0 released - Integration of SQLAlchemy with Zope 2/3
by Andreas Jung 05 May '07

05 May '07

I am pleased to announce the first public release of z3c.sqlalchemy V 1.0.0 What is z3c.sqlalchemy? ======================= z3c.sqlalchemy is yet another wrapper around SQLAlchemy. The functionality of the wrapper is basically focused on easy integration with Zope 2 and Zope 3. The wrapper cares about connection handling, optional transaction integration with Zope 2/3 and wrapper management (caching, introspection). z3c.sqlalchemy gives you flexible control over the mapper creation. Mapper classes can be - auto-generated (with or without autodetection of table relationships) - configured by the developer What z3c.sqlalchemy does not do and won't do: ============================================= - no support for Zope 3 schemas - no support for Archetypes schemas z3c.sqlachemy just tries to provide you with the basic functionalities you need to write SQLAlchemy-based applications with Zope 2/3. Higher-level functionalities like integration with Archetypes/Zope 3 schemas are subject to higher-level frameworks. z3c.sqlalchemy does not address these frameworks. Requirements: ============= - Zope 2.8+, Zope 3.X - SQLAlchemy 0.3.6 or higher Installation: ============= - either download z3c.sqlalchemy from Cheeseshop <http://cheeseshop.python.org/pypi/z3c.sqlalchemy/> - or use easy_install: easy_install z3c.sqlalchemy Andreas Jung -- ZOPYX Ltd. & Co. KG - Charlottenstr. 37/1 - 72070 Tübingen - Germany Web: www.zopyx.com - Email: info(a)zopyx.com - Phone +49 - 7071 - 793376 Registergericht: Amtsgericht Stuttgart, Handelsregister A 381535 Geschäftsführer/Gesellschafter: ZOPYX Limited, Birmingham, UK ------------------------------------------------------------------------ E-Publishing, Python, Zope & Plone development, Consulting

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custom Lexicon developpement problems
by Winterflood, Jonathan 04 May '07

04 May '07

This message contains information that may be privileged or confidential and is the property of the Capgemini Group. It is intended only for the person to whom it is addressed. If you are not the intended recipient, you are not authorized to read, print, retain, copy, disseminate, distribute, or use this message or any part thereof. If you receive this message in error, please notify the sender immediately and delete all copies of this message.

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Modify contents of a page template through a python script
by rieh25 04 May '07

04 May '07

I need to modify the contents of a page template through a python script. Or create a new page template object with content specified in the python script. Thanks. -- View this message in context: http://www.nabble.com/Modify-contents-of-a-page-template-through-a-python-s… Sent from the Zope - General mailing list archive at Nabble.com.

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Zwiki bug day tomorrow
by Simon Michael 03 May '07

03 May '07

Friday may 4th is Zwiki Bugfix Day! Drop by the #zwiki IRC channel any time on friday to help, hack, heckle, and join in the fun. http://zwiki.org/BugDay has more info. Hope to see you there! -Simon

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modify 'Server' response header
by Jens-Erik Hansen 03 May '07

03 May '07

Hi, is there a way to control the 'Server' response header in ZServer like it could be done with the ServerTokens directive in apache? In an apache -> squid -> zope configuration I tried apache's mod_headers but this only works if the page is cached in the browser (304 Not Modified), a browser-reload for example reveals ZServer. Does anyone know how to accomplish this without modifying any zope code? Thanks Jens

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Late binding
by Garito 03 May '07

03 May '07

Hi all! In this function: def ProcesarTALES(self, expresion, args = None): if expresion is None: return None engine = getEngine() contextoTALES = {'container': self.aq_parent, 'here': self, 'context': self, 'request': self.REQUEST, 'options': {}, 'sitio': self.Sitio(), 'user': getSecurityManager().getUser(), 'entidad': self.Entidad()} if args is not None: contextoTALES['options'] = {'args': args} resultado = engine.getContext(contextoTALES).evaluate(engine.compile (expresion)) return resultado is possible that the execution of entidad (self.Entidad()) has launched at evaluation time not at assign time? Thanks! -- Mis Cosas http://blogs.sistes.net/Garito

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Zope May 2007