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link.rb 508B

    # A Link connects Agents in a directed Event flow from the `source` to the `receiver`. class Link < ActiveRecord::Base attr_accessible :source_id, :receiver_id belongs_to :source, :class_name => "Agent", :inverse_of => :links_as_source belongs_to :receiver, :class_name => "Agent", :inverse_of => :links_as_receiver before_create :store_event_id_at_creation def store_event_id_at_creation self.event_id_at_creation = source.events.limit(1).reorder("id desc").pluck(:id).first || 0 end end