I'm trying to set default scope according to some criteria determined by ana ActionController before_filter. In controller:

  before_filter :authorize
  ...
  def authorize
    if some_condition
      @default_scope_conditions = something
    elsif another_condition
      @default_scope_conditions = something_else
    end
  end

Inside the ActiveRecord

default_scope :conditions => @default_scope_conditions

But it doesn't seem to work, the before filter gets called but the default_scope doesn't get set. Could you please advise me what I'm doing wrong and how to fix it or suggest me some other way of achieving that.