Suppose I have the following models:
class Post < ActiveRecord::Base
has_and_belongs_to_many :categories
named_scope :active, :conditions => {:active => true}
end
class Category < ActiveRecord::Base
has_and_belongs_to_many :posts
end
I can call Post.active to get the set of all active Post objects. And
I can call some_category.posts.active to get all active Post objects
associated with some_category.
But what if I want slightly different semantics for the active posts
within a category? Perhaps there is an additional condition that
should apply in this case, as suggested by the new method shown here:
class Category < ActiveRecord::Base
has_and_belongs_to_many :posts
def self.active_posts
channels.active.all :conditions => {:show_in_category => true}
end
end
Instead of introducing a new active_posts method, is there any way to
define conditions that should be merged into the named_scope when it
is reference from the associated class?
-Sven
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