On Thursday 14 May 2009 10:48:14 am Paul McNett wrote: > johnf wrote: > > On Thursday 14 May 2009 09:29:44 am Paul McNett wrote: > >> create table people (id integer primary key, > >> name char); > >> > >> create table categories (id integer primary key, > >> name char); > >> > >> create table peoplecat (id integer primary key, > >> person_id, > >> category_id); > >> > >> The peoplecat table is the intermediary table. So I make a bizobj on the > >> peoplecat table, with SQL like: > >> > >> select peoplecat.id as id, > >> peoplecat.person_id as person_id, > >> peoplecat.category_id as category_id, > >> people.name as person_name, > >> categories.name as category_name > >> left join people > >> on people.id = peoplecat.person_id > >> left join categories > >> on categories.id = peoplecat.category_id > >> group by peoplecat.id > >> > >> I then make 2 subclasses, PeopleForCategory and CategoriesForPerson. > >> PeopleForCategory has a LinkField of category_id, and > >> CategoriesForPerson has a LinkField of person_id. > >> > >> Your People bizobj adds CategoriesForPerson as a child, and your > >> Categories bizobj adds PeopleForCategory as a child. > > > > Trying to get my head around this. How do I create the subclasses??? > > Just like any other subclass. > > > class PeopleForCategory(Bizobj_peoplecat,dabo.biz.dBizobj) > > def afterInit(self): > > self.LinkField = 'category_id' > > No. > > class BizPeopleCat(dabo.biz.dBizobj): > def initProperties(self): > ... create the sql, set the common props, etc. > > class PeopleForCategory(BizPeopleCat): > def initProperties(self): > self.super() # get the common props initialized > self.LinkField = 'category_id' > > HTH > Paul
OK I understand that part. People bizobj adds BizPeopleCat as a child right? This really needs a wiki entry. I would do it but I doubt I completely understand it. -- John Fabiani _______________________________________________ Post Messages to: Dabo-users@leafe.com Subscription Maintenance: http://leafe.com/mailman/listinfo/dabo-users Searchable Archives: http://leafe.com/archives/search/dabo-users This message: http://leafe.com/archives/byMID/200905141056.47437.jfabi...@yolo.com
