Order on virtual attribute in has_many

Hi all,

Consider the following models: class Sheep < AR::B   belongs_to :herd

  def some_virtual_attribute     #returns something sortable   end end

class Herd < AR::B   has_many :sheep do     def some_method       #do something useful     end   end end

I want to be able to do:   some_herd.sheep.some_method

But the collection sheep should be sorted on the some_virtual_attribute of Sheep.

I tried something along the line of:   has_many :sheep do     def ordered        sort {|a,b| a.some_virtual_attribute <=> b.some_virtual_attribute}     end   end

This however returns an instance of Array on which the 'some_method' is not defined. How can I solve this?

With kind regards, Harm

To get this to work, you'd need to return an AssociationCollection, which is going to be tricky. Association extensions aren't *generally* combinable like this; I think you may be thinking about named scopes.

--Matt Jones