Rails - Oct 2005 - Creating Predicate and Destructive Methods?

This is a newbie question, but here it goes:

I understand how predicate and destructive methods work but if I want  
to make my own is it purely just a naming convention?  Could I  
technically make a method that was not a predicate method but name it  
as such?  Not that I would.. just wondering.

Also, I''m unsure as to how to make my own destructive method.  Can  
anyone send me an example of a custom destructive method?

- Jim

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On Oct 3, 2005, at 11:53 AM, Jim Jeffers wrote:
> I understand how predicate and destructive methods work but if I  
> want to make my own is it purely just a naming convention?  Could I  
> technically make a method that was not a predicate method but name  
> it as such?  Not that I would.. just wondering.
Yes, these are just Ruby naming conventions.

ActiveRecord takes it one step further, automatically creating  
attribute_name? predicates for your boolean columns.

> Also, I''m unsure as to how to make my own destructive method.  Can
> anyone send me an example of a custom destructive method?
class Foo < ActiveRecord::Base
   def toggle!
     self.active = !self.active?
     save!
   end
end

Best,
jeremy
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