Rails - Mar 2006 - depth needed in model()

If there are models of type M in session, and objects of type M  
contain objects of type M'', does M'' need to be included in
model()?

-- fxn

Xavier Noria wrote:
> If there are models of type M in session, and objects of type M  contain 
> objects of type M'', does M'' need to be included in
model()?
If by "contain" you mean has_many, then I think not...  the has_many 
method calls require_association_class which does the necessary.

-- 
Alex

On Mar 5, 2006, at 23:22, Alex Young wrote:
> Xavier Noria wrote:
>> If there are models of type M in session, and objects of type M   
>> contain objects of type M'', does M'' need to be
included in model()?
> If by "contain" you mean has_many, then I think not...  the  
> has_many method calls require_association_class which does the  
> necessary.
I meant "references", either directly or indirectly by means of some  
standard class like "Array of non-AR models".

Looks like a good rule of thumb would be: if all child models are  
referenced by means of AR''s DSL like has_many, has_one, etc. then  
only the root model needs to be passed to model(). Otherwise pass as  
many models as needed recursively (sounds very fragile). In any case,  
putting a model that would be loaded anyway does not hurt.

Does that look right?

-- fxn