From: arjun ghosh <arjun4ruby@...>
Date: 2007-05-07T23:14:04+09:00
Subject: Re: [Rails] passing by value of object of a model

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hi,
 i realized that from Alex's msg. Though Pat's info helped me to learn this
way of discovering the class from a name. i finally have used the object
reference method as it seemed more intutive and simpler as i already had the
object for the above said model.
Any way thanks to all for the quick help. This is also one thing i like
about RoR - awsome community support..:-)
ciao.
A quick question - This is for Pat and Nanyang --
Pat u told about "food_dept".classify.constantize
and Nanyang u told the method "food_dept".camelize.constantize and when i
ran it in console and checked for class, both gave me class type. so whats
the diffrence?

-AG

On 5/7/07, David Chelimsky <dchelimsky@gmail.com> wrote:
>
> On 5/7/07, arjun ghosh <arjun4ruby@gmail.com> wrote:
> > Hi,
> > can anyone tell me - is it possible to pass a string name equivalent of
> a
> > model name(example:- have a model called food_dept and i am passing the
> > string "food_dept" to a method) and then covert(or cast) it to its
> original
> > model equivalent so that i can use its object in the called method. and
> why
> > i am i trying to this manner is because i want to avoid passing an
> object
> > which will make it very heavy.
>
> Unless I'm missing something (which is usually the case :) ), there
> seems to be a misunderstanding of how variables work in Ruby.
>
> When you pass food_dept (or FoodDept) to another method, you are not
> passing the object itself, but rather a variable which holds a
> reference to the object. What you suggest, passing its name and then
> discovering the class from its name is far more expensive than simply
> using the variable.
>
> Cheers,
> David
>
> >i think there should be some better elegant
> > manner of doing this. can any one help me with this?
> > ciao
> > -AG
> >
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