Server programming

Bruno Desthuilliers bruno.42.desthuilliers at websiteburo.invalid
Tue Mar 3 16:09:18 CET 2009

koranthala a écrit :

> 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.

More information about the Python-list mailing list