[LRUG] Query about ActiveRecord

[Craig Webster]

On 17 Aug 2007, at 18:58, John Winters wrote:
> class Cycle < ActiveRecord::Base
>
>    def pattern
>      @pattern
>    end
>
>    def pattern=(new_pattern)
>      #
>      # Pad new_pattern to required length if needed, and then...
>      #
>      @pattern = new_pattern
>    end
>
> end
>
> Obviously you have to use @pattern and not self.pattern or you end up
> with a recursive call.

Use write_attribute('pattern', new_pattern), though I'd try to do it  
by using alias_method_chain like so:

class Cycle < ActiveRecord::Base
   def pattern_With_minimum_length=(pattern)
     # pad pattern here
     self.pattern_without_minimum_length = pattern
   end
   alias_method_chain :pattern, :minimum_length
end

Untested so I'm not sure if it'll work, but worth a try :)

About to get kicked out of Starbucks (closing time) or I'd explain  
what was causing the problem more throughly so err... it's left a an  
exercise to the reader!

Cheers,
Craig
--
Craig Webster   | Lead Developer   | skype: craigwebster
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