Module: Recommendable::ActsAsRecommendable::ClassMethods

Defined in:
lib/recommendable/acts_as_recommendable.rb

Instance Method Summary collapse

Instance Method Details

#acts_as_recommendable ⇒ Object 



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# File 'lib/recommendable/acts_as_recommendable.rb', line 6

def acts_as_recommendable
  class_eval do
    Recommendable.recommendable_classes << self
    
    has_many :likes, :as => :likeable, :dependent => :destroy, :class_name => "Recommendable::Like"
    has_many :dislikes, :as => :dislikeable, :dependent => :destroy, :class_name => "Recommendable::Dislike"
    has_many :liked_by, :through => :likes, :source => :user
    has_many :disliked_by, :through => :dislikes, :source => :user
    has_many :ignores, :as => :ignoreable, :dependent => :destroy, :class_name => "Recommendable::Ignore"
    has_many :stashes, :as => :stashable, :dependent => :destroy, :class_name => "Recommendable::StashedItem"
    
    include LikeableMethods
    include DislikeableMethods
    
    def self.acts_as_recommendable?() true end


    def been_rated?
      likes.count + dislikes.count > 0
    end

    # Returns an array of users that have liked or disliked this item.
    # @return [Array] an array of users
    def rated_by
      liked_by + disliked_by
    end

    private
    
    # Used for setup purposes. Calls convenience methods to create sets
    # in redis of users that both like and dislike this object.
    # @return [Array] an array containing the liked_by set and the disliked_by set
    # @private
    def create_recommendable_sets
      [create_liked_by_set, create_disliked_by_set]
    end
    
    # Used for teardown purposes. Destroys the sets in redis created by
    # {#create_recommendable_sets}
    # @private
    def destroy_recommendable_sets
      Recommendable.redis.del "#{self.class}:#{id}:liked_by"
      Recommendable.redis.del "#{self.class}:#{id}:disliked_by"
    end

    # Returns an array of IDs of users that have liked or disliked this item.
    # @return [Array] an array of user IDs
    # @private
    def rates_by
      likes.map(&:user_id) + dislikes.map(&:user_id)
    end

    private :likes, :dislikes, :ignores, :stashes
  end
end

#acts_as_recommendable? ⇒ Boolean

Returns:

  • (Boolean) 


62
 
# File 'lib/recommendable/acts_as_recommendable.rb', line 62

def acts_as_recommendable?() false end