Pastie Support Pastie or read my Pastie << self blog

# suggestee_id
# suggestor_id
# suggested_id
# suggested_type

class Suggestion < AR::Base
  belongs_to :suggested, :polymorhpic => true
  belongs_to :suggestor, :class => 'User'
  belongs_to :suggestee, :class => 'User'
end

class Item < AR::Base
  has_many :suggestions, :as => :suggestion
  has_many :suggstors, :through => :suggestions
  has_many :suggestees, :through => :suggestions
end

class User < AR::Base
  has_many :suggestions, :foreign_key => 'suggestor_id'
  has_many :suggestables, :through => :suggestions
  has_many :personal_suggestions, :foreign_key => 'suggestee_id'
  has_many :suggested, :through => :personal_suggestions
end