Server programming

koranthala koranthala at gmail.com
Tue Mar 3 18:29:12 CET 2009


On Mar 3, 8:09 pm, Bruno Desthuilliers <bruno.
42.desthuilli... at websiteburo.invalid> wrote:
> koranthala a écrit :
> (snip)
>
> > Hi Bruno,
> >    After reading your email, I tried reworking my code so that most of
> > my logic moves to Models.
> >    But, most probably because this is my first application
> > development, I am unable to do so.
> >    For example:
> >     I have Models A,B, C, D . Now, there is not much model specific
> > code (preprocessing before updating code inside Models)in it. Rather
> > most of the code is of the format:
> >      data received and to be added to D. But for adding to D, check
> > whether it is already in C - if not add to C and B. etc...
>
> And you don't find it "model specific" ? Man, this is business rules,
> and as such belongs to the models part, not to views. You surely want to
> make sure these rules always apply, don't you ?
>
> >    Now, I tried putting this code inside Model D,but it does not seem
> > to belong there - since it modifies other Models.
>
> And ? Who said a Model (or ModelManager) shouldn't touch other models ?
>
> >    Is keeping such code inside views against Django's/Application-
> > Developments philosophy?
>
> FWIW, I see this antipattern (AnemicDomainModel) way too often in django
> apps. This doesn't make it less of an antipattern.
>
> > In that case, where will this go?
>
> It's impossible to say exactly where in the models module without a
> sufficiant knowledge of the domain, rules etc. Sorry, but my crystal
> ball is out for repair.

Thank you, Bruce.
Sorry for the rather naive questions.



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