new

# File activerecord/lib/active_record/associations/builder/association.rb, line 15
    def initialize(model, name, scope, options)
      raise ArgumentError, "association names must be a Symbol" unless name.kind_of?(Symbol)

      @model   = model
      @name    = name

      if scope.is_a?(Hash)
        @scope   = nil
        @options = scope
      else
        @scope   = scope
        @options = options
      end

      if @scope && @scope.arity == 0
        prev_scope = @scope
        @scope = proc { instance_exec(&prev_scope) }
      end
    end