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path: root/actioncable/lib/action_cable/channel/broadcasting.rb
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require "active_support/core_ext/object/to_param"

module ActionCable
  module Channel
    module Broadcasting
      extend ActiveSupport::Concern

      delegate :broadcasting_for, to: :class

      class_methods do
        # Broadcast a hash to a unique broadcasting for this <tt>model</tt> in this channel.
        def broadcast_to(model, message)
          ActionCable.server.broadcast(broadcasting_for([ channel_name, model ]), message)
        end

        def broadcasting_for(model) #:nodoc:
          case
          when model.is_a?(Array)
            model.map { |m| broadcasting_for(m) }.join(":")
          when model.respond_to?(:to_gid_param)
            model.to_gid_param
          else
            model.to_param
          end
        end
      end
    end
  end
end