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ruby-on-railsdrydelegation

Sharing delegation methods between two models

Model A and Model B share the following delegation methods:

  delegate :league, :to => :event, :prefix => true, :allow_nil => false # event_league

  def event_league_sport
    self.event_league.sport
  end

  def event_league_sport_name
    event_league_sport.name
  end

So that I don't have to repeat the same methods in each class, what's the best way to share them between the two in a nice DRY way?

Solution

  • Add the methods to a module and include said module in your classes:

    module EventDelegator
  def event_league_sport
    self.event_league.sport
  end

  def event_league_sport_name
    event_league_sport.name
  end
end

class A
  include EventDelegator
end