On 3/29/06, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote:
>
> Adrian Holovaty wrote:
> > The convention is to put the URL-creation logic in your models, in a
> > get_absolute_url() method. Here's a quick example:
> >
> > class Person(meta.Model):
> > gender = meta.CharField(maxlength=1) # 'm' or 'f'
> > full_name = meta.CharField(maxlength=50)
> >
> > def get_absolute_url(self):
> > return '/people/%s/%s/' % (self.gender,
> > self.full_name.lower().replace(' ', ''))
>
> I find this *really* surprising. All discussions and examples I've seen
> so far are quite strict about the fact that models should be separate
> from presentation logic. See the various discussions about "how can my
> model get access to request.user?" here in this group. These arguments
> made (make) perfect sense to me.
>
> And now you're encoding URLs (which are, in my mind, definitely
> presentation-related) in the models? To me, this seems strange and
> unnatural. Why should a "Book" model care wether it has a view that
> lives under "/library" or under "/amazon/shoppingcart" or under
> "/thingtostopthetablefromwobbling" ? It's a book. It has properties. It
> knows how to tell me its title.
>
> But it shouldn't care wether it's being read or being used to prop up
> furniture.
>
> Or am I misunderstanding something here?
>
> Daniel
>
Because I think model in Django is not a simple data wrapper layer,
but also a representation layer in many situations. If you don't want
model do much, so you need do such things(create url) in other places.
And if there is not a good way to create url, I think create url by
model itself is a handy way.
And I think there should be a good way to create url, which will
consider different applications, functions, and object_ids. Even
user_id in it.
--
I like python!
My Blog: http://www.donews.net/limodou
NewEdit Maillist: http://groups.google.com/group/NewEdit
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