Comments on: Rails 2.1: Named Scope http://www.railsrocket.com/articles/rails-21-named-scope A Ruby on Rails community website with tutorials Tue, 16 Feb 2010 16:49:58 -0600 http://wordpress.org/?v=2.8.4 hourly 1 By: Kirk Bushell http://www.railsrocket.com/articles/rails-21-named-scope/comment-page-1#comment-4310 Kirk Bushell Sun, 13 Dec 2009 21:40:50 +0000 http://www.railsrocket.com/articles/?p=119#comment-4310 ashes - models only get loaded once - when the server starts. As a result, any code that isn't run at runtime (this includes behaviours, relationships/associations, scopes.etc.) only get evaluated once the server has started. ashes – models only get loaded once – when the server starts. As a result, any code that isn’t run at runtime (this includes behaviours, relationships/associations, scopes.etc.) only get evaluated once the server has started.

]]> By: ashes999 http://www.railsrocket.com/articles/rails-21-named-scope/comment-page-1#comment-3159 ashes999 Tue, 04 Aug 2009 03:03:38 +0000 http://www.railsrocket.com/articles/?p=119#comment-3159 Oh nice, I wasn't aware of that. Thanks for the correction ... I didn't know that it's evaluated at server start-time. Did you confirm this empirically? :) Oh nice, I wasn’t aware of that. Thanks for the correction … I didn’t know that it’s evaluated at server start-time. Did you confirm this empirically? :)

]]> By: xpmatteo http://www.railsrocket.com/articles/rails-21-named-scope/comment-page-1#comment-3156 xpmatteo Mon, 03 Aug 2009 21:13:43 +0000 http://www.railsrocket.com/articles/?p=119#comment-3156 I mean, the way you coded the :visible_now scope, the Date.now will be evaluated when the server starts, not when the query is run. So your query will give increasingly wrong answers as time goes on :-) The right way to do it is to wrap the condition in a lambda; they are not just for capturing parameters, they're also for delayed execution. I mean, the way you coded the :visible_now scope, the Date.now will be evaluated when the server starts, not when the query is run. So your query will give increasingly wrong answers as time goes on :-) The right way to do it is to wrap the condition in a lambda; they are not just for capturing parameters, they’re also for delayed execution.

]]> By: xpmatteo http://www.railsrocket.com/articles/rails-21-named-scope/comment-page-1#comment-3155 xpmatteo Mon, 03 Aug 2009 21:10:03 +0000 http://www.railsrocket.com/articles/?p=119#comment-3155 I don't think the named_scope :visible_now, :conditions => {:created_on {:created_on <= Date.today}}} I don’t think the

named_scope :visible_now, :conditions => {:created_on {:created_on <= Date.today}}}

]]>