Re: [Zope3-Users] Best way to represent a foreign key in ZODB
Am 03.03.2009 um 21:53 schrieb Massimiliano della Rovere: What is the best way to represent a foreign key? a persistent.wref? an intid number? Suppose I have a persistent class representing an art object author (A) and another persistent class representing an art object (B). If I want to create links from one instance of one A to instances of class B (and vice versa) what do you recommend me? It would be great having the possibility of referring attributes and methods of the object: is w is a reference to an instance of A, w.name and w.surname for example... You might have a look at http://pypi.python.org/pypi/gocept.reference Yours sincerely, -- Michael Howitz · m...@gocept.com · software developer gocept gmbh co. kg · forsterstraße 29 · 06112 halle (saale) · germany http://gocept.com · tel +49 345 1229889 8 · fax +49 345 1229889 1 Zope and Plone consulting and development ___ Zope3-users mailing list Zope3-users@zope.org http://mail.zope.org/mailman/listinfo/zope3-users
Re: [Zope3-Users] Best way to represent a foreign key in ZODB
Thank you Michael! On Wed, Mar 4, 2009 at 09:13, Michael Howitz m...@gocept.com wrote: Am 03.03.2009 um 21:53 schrieb Massimiliano della Rovere: What is the best way to represent a foreign key? a persistent.wref? an intid number? Suppose I have a persistent class representing an art object author (A) and another persistent class representing an art object (B). If I want to create links from one instance of one A to instances of class B (and vice versa) what do you recommend me? It would be great having the possibility of referring attributes and methods of the object: is w is a reference to an instance of A, w.name and w.surname for example... You might have a look at http://pypi.python.org/pypi/gocept.reference Yours sincerely, -- Michael Howitz · m...@gocept.com · software developer gocept gmbh co. kg · forsterstraße 29 · 06112 halle (saale) · germany http://gocept.com · tel +49 345 1229889 8 · fax +49 345 1229889 1 Zope and Plone consulting and development -- Se proprio dovete inserirmi in una mail in una lista con indirizzi, vi prego di mettere il mio nel campo CCN: o BCC: e non in TO: CC: oppure A: skype: masdero, icq: 473891447, yim: mas_dero, msn: mas_d...@hotmail.com Mi scriva in italiano; Write me in English; Skribu al mi Esperante! Volete farmi un regalo a natale e non sapete cosa? :D http://www.boardgamegeek.com/collection/user/masdero?sort=wishlistsortdir=asccolumns=title|thumbnail|status|rating|bggrating|plays|comment|commandswishlist=1ff=1 ___ Zope3-users mailing list Zope3-users@zope.org http://mail.zope.org/mailman/listinfo/zope3-users
Re: [Zope3-Users] Best way to represent a foreign key in ZODB
Am 04.03.2009 um 14:09 schrieb Massimiliano della Rovere: I have problems installing the package (I never did it before, probably i do something wrong). I downloaded the package, decompressed it and run: sudo python setup.py build - ok sudo python setup.py install - error You should use buildout to install dependencies for your application. As you already use Zope, there should be already a ZODB, so it needs not to be built at install of gocept.reference. See http://pypi.python.org/pypi/zc.buildout or maybe http://redomino.com/it/labs/documentazione/tutorial/gestire-progetti-con-zc-buildout/ When installing, it tries to download an updated package about ZODB but then it fails compiling it: python2.4 setup.py build [...] src/BTrees/BTreeModuleTemplate.c:15:20: error: Python.h: Nessun file o directory Google finds this: http://www.mail-archive.com/plone...@lists.plone.org/msg02411.html (sounds a bit similar especially because I do not understand Italian :) Yours sincerely, -- Michael Howitz · m...@gocept.com · software developer gocept gmbh co. kg · forsterstraße 29 · 06112 halle (saale) · germany http://gocept.com · tel +49 345 1229889 8 · fax +49 345 1229889 1 Zope and Plone consulting and development ___ Zope3-users mailing list Zope3-users@zope.org http://mail.zope.org/mailman/listinfo/zope3-users
Re: [Zope3-Users] Best way to represent a foreign key in ZODB
Thank you I solved the problem. I was missing the build-essential python2.4-dev packages. Since they were not installed I received the errors. On Wed, Mar 4, 2009 at 14:53, Michael Howitz m...@gocept.com wrote: Am 04.03.2009 um 14:09 schrieb Massimiliano della Rovere: I have problems installing the package (I never did it before, probably i do something wrong). I downloaded the package, decompressed it and run: sudo python setup.py build - ok sudo python setup.py install - error You should use buildout to install dependencies for your application. As you already use Zope, there should be already a ZODB, so it needs not to be built at install of gocept.reference. See http://pypi.python.org/pypi/zc.buildout or maybe http://redomino.com/it/labs/documentazione/tutorial/gestire-progetti-con-zc-buildout/ When installing, it tries to download an updated package about ZODB but then it fails compiling it: python2.4 setup.py build [...] src/BTrees/BTreeModuleTemplate.c:15:20: error: Python.h: Nessun file o directory Google finds this: http://www.mail-archive.com/plone...@lists.plone.org/msg02411.html (sounds a bit similar especially because I do not understand Italian :) Yours sincerely, -- Michael Howitz · m...@gocept.com · software developer gocept gmbh co. kg · forsterstraße 29 · 06112 halle (saale) · germany http://gocept.com · tel +49 345 1229889 8 · fax +49 345 1229889 1 Zope and Plone consulting and development -- Se proprio dovete inserirmi in una mail in una lista con indirizzi, vi prego di mettere il mio nel campo CCN: o BCC: e non in TO: CC: oppure A: skype: masdero, icq: 473891447, yim: mas_dero, msn: mas_d...@hotmail.com Mi scriva in italiano; Write me in English; Skribu al mi Esperante! Volete farmi un regalo a natale e non sapete cosa? :D http://www.boardgamegeek.com/collection/user/masdero?sort=wishlistsortdir=asccolumns=title|thumbnail|status|rating|bggrating|plays|comment|commandswishlist=1ff=1 ___ Zope3-users mailing list Zope3-users@zope.org http://mail.zope.org/mailman/listinfo/zope3-users
