From: Dema <demetriusnunes@...>
Date: 2005-09-05T00:16:26+09:00
Subject: Re: params v.s. @params in rails?

Not really. In this particular case, params is simply an accessor
method to the @params instance variable, not a local variable. So, in
practice, they�re equivalent.

The recommendation for using the params method, instead of accessing
the @params instance variable directly, is that it�s more uniform to
use the accessor method, since you can also do that from the view.

David A. Black wrote:
> Hi --
>
> On Sun, 4 Sep 2005, Barry wrote:
>
> > Both work in my controller class, so I am wondering what's the
> > difference and when should each one be used?
>
> To the extent that this is a Rails question, you might want to ask it
> in a Rails forum (mailing list or IRC channel).
>
> Meanwhile, the non-Rails-specific answer is that the bareword "params"
> is a local variable, while "@params" is an instance variable.  Local
> variables are mainly a kind of "scratchpad" or temporary holding area
> for data in the current local scope.  Instance variables are unique
> per object, rather than per scope, and give your objects a way to
> maintain state across different methods and local scopes.
> 
> 
> David
> 
> -- 
> David A. Black
> dblack@wobblini.net