Module: Acts::Elo::ClassMethods

Defined in:
lib/acts_as_elo/acts/elo.rb

Instance Method Summary collapse

Instance Method Details

#acts_as_elo(opts = {}) ⇒ Object

‘acts_as_elo` hooks into your object to provide you with the ability to set and get `elo_rank` attribute Available options are:

  • default_rank - change the starting rank

  • one_way - limits update of the rank to only self

  • proficiency_map - hash that has two keys

    * rank_limits  - array of two elements, ranks that limit categories of
                 player proficiency. Between novice and intermediate; intermediate and pro.
                 Defaults: 1299, 2399
* coefficients - proficiency coefficient for each category.
                 Defaults: 30 for novice, 15 for intermediate, 10 for a pro



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# File 'lib/acts_as_elo/acts/elo.rb', line 19

def acts_as_elo(opts = {})
  default_rank    =  opts[:default_rank] || 1200
  proficiency_map =  opts[:proficiency_map] || {:coefficients => [30, 15, 10],
                                                :rank_limits  => [1299, 2399] }

  unless opts.empty?
    class << self
      attr_accessor :acts_as_elo_options
    end
    @acts_as_elo_options = opts
  end

  class_eval do
    if Object::const_defined?("ActiveRecord") && self.ancestors.include?(ActiveRecord::Base)

      define_method(:elo_rank) do
        self[:elo_rank] ||= default_rank
      end

    else

      attr_writer :elo_rank
      define_method(:elo_rank) do
        @elo_rank ||= default_rank
      end
    end

    define_method(:elo_proficiency_map) do
      proficiency_map
    end
  end

  include Acts::Elo::InstanceMethods unless self.included_modules.include?(Acts::Elo::InstanceMethods)
end