I remember a quote from either headfirst java or design patterns that said something like: "The key to inheritance is to abstract functionality."
I realize we're not talking about inheritance, but I think it still applies. It may make logical sense that a user object has a blog that has entries, but unless a blog object adds functionality, you should just say that a user has entries. On Sep 21, 8:33 pm, ringemup <ringe...@gmail.com> wrote: > There's a pattern I keep running into, and I've been wondering if > anyone who's encountered it before has an opinion on how best to deal > with it: > > Imagine you have an app that could theoretically stand on its own -- > for now let's say a schedule, but it could be anything (an image > gallery, a blog, etc). This app has multiple items per "app > instance" (i.e. every schedule has multiple events; every blog has > multiple entries, etc). > > For your main project, tou want every user to have one instance of > what the app provides. > > It seems more pluggable to have an intermediary parent model (Schedule > or Blog or Gallery) between the app items (events, entries, etc) and > the user / user profile than to assign the items directly to the > user. I.e. each Event has a "schedule" FK and the user profile has a > "schedule" one-to-one field, rather than giving each event a "user" > FK. > > On the other hand, the intermediary model is rather pointless if it > doesn't have any fields of its own. It also results in more demanding > queries and interferes with the use of select_related. > > How do you typically handle this case? > > Thanks! --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Django users" group. To post to this group, send email to django-users@googlegroups.com To unsubscribe from this group, send email to django-users+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/django-users?hl=en -~----------~----~----~----~------~----~------~--~---
